Manuale d’uso / di manutenzione del prodotto USN 52L del fabbricante Epson
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USN 52R / USN 52L T echnical Reference and Operating Manual Ident No. 28 642 Please unfold the inside page. All function groups and tables are illustrated there enabling you to quickly find instrument functions whilst reading this manual. Y ou will also find an overview of status symbols.
Krautkramer USN 52R/USN 52L Issue 05, 02/00 0- 1 Index 1. Introduction ....................................... 1-1 1. 1 Safety information ................................... 1 - 2 Storage batteries ....................................... 1 - 2 Defects/errors and exceptional stresses .
0- 2 Issue 05, 02/00 Krautkramer USN 52R/USN 52L Index 3. 3 Probe connection ..................................... 3 - 5 3. 4 Starting the USN 52 R .............................. 3 - 5 Switching on .............................................. 3 - 5 Reset .
Krautkramer USN 52R/USN 52L Issue 05, 02/00 0- 3 Index Storing data .............................................. 5-14 Clearing the instrument setting .................. 5-15 Clearing all data ........................................ 5-16 Displaying stored A-Scans (preview) .
0- 4 Issue 05, 02/00 Krautkramer USN 52R/USN 52L Index 6. Documentation .................................. 6-1 6. 1 Printing instrument settings and display contents ....................................... 6 - 2 Pre par ing t he pr int er ............
Krautkramer USN 52R/USN 52L Issue 05, 02/00 0- 5 Index 9. Specifications .................................... 9-1 10. Appendix .......................................... 10-1 10.1 Function directory .................................. 10-2 10.2 EC C ertificate of Conformity .
0- 6 Issue 05, 02/00 Krautkramer USN 52R/USN 52L 0- 6 Issue 05, 02/00 Krautkramer USN 52R/USN 52L.
Krautkramer USN 52R/USN 52L Issue 05, 02/00 1- 1 Introduction 1 Krautkramer USN 52R/USN 52L Issue 05, 02/00 1- 1 Introduction 1.
1- 2 Issue 05, 02/00 Krautkramer USN 52R/USN 52L 1 .1 Safety information USN 52R and USN 52L have been designed and tested according to DIN EN 61 010 Part 1, March 1994, Safety requirements for electrical measuring, control and lab equipment, and was technically in perfectly safe and faultless condition when leaving the manufacturing works.
Krautkramer USN 52R/USN 52L Issue 05, 02/00 1- 3 Software Based on the present state of the art software can never be completely error-free. That is why software-controlled instruments should be checked before use to see if the necessary functions operate perfectly in the provided combination.
1- 4 Issue 05, 02/00 Krautkramer USN 52R/USN 52L Operator training The operator of an ultrasonic flaw detector must be adequately trained in the field of ultrasonic test meth- ods.
Krautkramer USN 52R/USN 52L Issue 05, 02/00 1- 5 Limits of testing Ultrasonic tests can only provide information about those parts of the test object which the sound beam from the probe used has actually passed through.
1- 6 Issue 05, 02/00 Krautkramer USN 52R/USN 52L Effect of temperature variations The velocity of sound within the test object also varies as a function of the temperature of the material. This can cause appreciable errors if the instrument has been calibrated on a cold calibration block and is then used on a warm or hot test object.
Krautkramer USN 52R/USN 52L Issue 05, 02/00 1- 7 Echo display comparison method The echo from a small natural flaw is usually smaller than the echo from an artificial comparison flaw (e.
1- 8 Issue 05, 02/00 Krautkramer USN 52R/USN 52L 1 .3 USN 52R/USN 52L USN 52R/USN 52L are lightweight, compact ultrasonic flaw detectors which is especially well suited for • locating and evaluating material flaws, • measuring wall thicknesses. • documenting all test results and readings.
Krautkramer USN 52R/USN 52L Issue 05, 02/00 1- 9 • 2-stage adjustment of pulse repetition rate in order to avoid phantom echoes, • indication of amplitude and sound path for flaw testing and thickness measurement, • DAC for convenient display evaluation according to the reference block method (e.
1- 10 Issue 05, 02/00 Krautkramer USN 52R/USN 52L 1 . 4 Remarks on this manual H Note : This manual applies to the two USN 52 versions USN 52R and USN 52L. The examples shown refer to the USN 52R; however , since function groups and func- tions of the two instruments are basically the same, the examples also apply to the USN 52L.
Krautkramer USN 52R/USN 52L Issue 05, 02/00 1- 11 Layout of this manual In order to simplify use of this manual, the operating steps are always presented in the same way .
1- 12 Issue 05, 02/00 Krautkramer USN 52R/USN 52L 1- 12 Issue 05, 02/00 Krautkramer USN 52R/USN 52L.
Krautkramer USN 52R/USN 52L Issue 05, 02/00 2- 1 Standard package and accessories 2 Krautkramer USN 52R/USN 52L Issue 05, 02/00 2- 1 Standard package and accessories 2.
2- 2 Issue 05, 02/00 Krautkramer USN 52R/USN 52L This chapter gives information about all parts and options supplied for the USN 52R/USN 52L. Among others, it describes: • Accessories in the Standar.
Krautkramer USN 52R/USN 52L Issue 05, 02/00 2- 3 2.1 Standard package Product type Description Order no. USN 52R Portable ultrasonic flaw detector with high-resolution EL display , with probe connecto.
2- 4 Issue 05, 02/00 Krautkramer USN 52R/USN 52L 2. 2 Required accessories Product type Description Order no. UN 6 55 Power supply/battery charger unit 34 941 NCA 2-6 Se t o f si x N iC d ba tt er ies 25 812 2.
Krautkramer USN 52R/USN 52L Issue 05, 02/00 2- 5 Product type Description Order no. GCH1 Adaptor DB 25P (gender changer) to connect 13 64 8 the USN 52/PC cable to a printer with serial interface (EPSO.
2- 6 Issue 05, 02/00 Krautkramer USN 52R/USN 52L 2- 6 Issue 05, 02/00 Krautkramer USN 52R/USN 52L.
Krautkramer USN 52R/USN 52L Issue 05, 02/00 3- 1 Setting into operation 3 Krautkramer USN 52R/USN 52L Issue 05, 02/00 3- 1 Setting into operation 3.
3- 2 Issue 05, 02/00 Krautkramer USN 52R/USN 52L It is imperative that you observe the instructions given in this chapter before setting the instrument into opera- tion. Here you will be informed about the necessary prepara- tions before startig the instrument for the first time in order to avoid any damages or wrong measurement results.
Krautkramer USN 52R/USN 52L Issue 05, 02/00 3- 3 Battery operation For battery operation, you will either require 6 NiCd or alkaline batteries (D-cells). The current battery voltage is indicated on the display by a symbol: H Note: The batteries should be exchanged as soon as possible when the charge indication is at about 25%.
3- 4 Issue 05, 02/00 Krautkramer USN 52R/USN 52L Using the battery charger The power supply/charger unit for USN 52R/USN 52L automatically adjusts itself fo the existing supply volt- age in the range from 80 to 250 V . The connection for the combined power supply/charger unit is at the rear of the instrument (see following figure).
Krautkramer USN 52R/USN 52L Issue 05, 02/00 3- 5 3. 3 Probe connection The probe connections are on the lower right of the front panel. Connect straight-beam probes to the red socket (Re- ceive - right). With T/R probes, connect the pulser cable to the green socket (left) and the receiver cable to the red socket (right).
3- 6 Issue 05, 02/00 Krautkramer USN 52R/USN 52L Reset If you are not able to operate the functions after a warm start, you must carry out a cold start: – Press A and K together . – Keep A pressed until the A-scan appears. A Attention: The instrument has now the factory-preset default set- ting.
Krautkramer USN 52R/USN 52L Issue 05, 02/00 4- 1 Basics of operation 4 Krautkramer USN 52R/USN 52L Issue 05, 02/00 4- 1 Basics of operation 4.
4- 2 Issue 05, 02/00 Krautkramer USN 52R/USN 52L 4 . 1 USN 52R and USN 52L The present operating manual applies to both instru- ment versions. Operating concept, operating levels, function groups and functions of the two instruments are basically the same.
Krautkramer USN 52R/USN 52L Issue 05, 02/00 4- 3 USN 52R and USN 52L Basics of operation The USN 52L is provided with the following special keys for the LCD screen: l switches the display backlight directly on and off. u varies the brightness / the contrast of the LCD screen.
4- 4 Issue 05, 02/00 Krautkramer USN 52R/USN 52L 4.2 Display A-scan display The digital display shows the A-scan either • in the normal mode with measured-value overlay - the value highlighted in the measurement line is overlaid on the display . Basics of operation Display • in the enlarged mode display mode with overlaid measured value.
Krautkramer USN 52R/USN 52L Issue 05, 02/00 4- 5 Functions on the display Selected function groups are shown on the display: • In the first operating level one selected function group is displayed in addition to the A-scan. • In the second operating level there are 3 groups compiled into one function table (refer to fold-out page).
4- 6 Issue 05, 02/00 Krautkramer USN 52R/USN 52L Indications beneath the A-scan Measurement line The current measurement results are displayed here. The contents of this line depend on the settings of the functions MEASURE, TOF , AMPLITUDE, FILE MODE, ANGLE and X-V ALUE.
Krautkramer USN 52R/USN 52L Issue 05, 02/00 4- 7 Menu line The function groups in the first operating level are dis- played here. The selected group is inverted. Display Basics of operation Krautkramer USN 52R/USN 52L Issue 05, 02/00 4- 7 Menu line The function groups in the first operating level are dis- played here.
4- 8 Issue 05, 02/00 Krautkramer USN 52R/USN 52L 4. 2 Keypad Function keys – Below: for function group selection and for switching over between operating levels.
Krautkramer USN 52R/USN 52L Issue 05, 02/00 4- 9 Special keys of the USN 52L for setting the display For switching the backlight on and off, and for setting the contrast/brightness.
4- 10 Issue 05, 02/00 Krautkramer USN 52R/USN 52L 4. 3 Operational concept The functions are divided into two operating levels. – In the first operating level you will find the most frequently used functions divided into seven function groups. Y ou can toggle between the function groups as you like.
Krautkramer USN 52R/USN 52L Issue 05, 02/00 4- 11 Selection of measured value for enlarged display Using U in the measurement line select the value which is to be enlarged on the display . With U you also can toggle between graticule scaling in scale divisions (Div .
4- 12 Issue 05, 02/00 Krautkramer USN 52R/USN 52L 4 . 5 Keys for special functions Important functions and special functions can be se- lected via special keys on the right-hand side of the operating .
Krautkramer USN 52R/USN 52L Issue 05, 02/00 4- 13 4 .6 Important basic settings Set language In the LANGUAGE function in the second operating level you can select the language in which the names of the functions are to be displayed.
4- 14 Issue 05, 02/00 Krautkramer USN 52R/USN 52L 4- 14 Issue 05, 02/00 Krautkramer USN 52R/USN 52L.
Krautkramer USN 52R/USN 52L Issue 05, 02/00 5- 1 Operation 5 Krautkramer USN 52R/USN 52L Issue 05, 02/00 5- 1 Operation 5.
5- 2 Issue 05, 02/00 Krautkramer USN 52R/USN 52L 5. 1 Function overview (first operating level) In the first operating level you will find all functions required for basic adjustment of the USN 52R/USN 52L. They are compiled into function groups allocated to certain operation tasks.
Krautkramer USN 52R/USN 52L Issue 05, 02/00 5- 3 5 . 2 Adjustment of the USN 52R/ USN 52L GAIN Gain adjustment With this function the echoes of the reflectors to be detected are amplified so that they appear on the dis- play at the required height.
5- 4 Issue 05, 02/00 Krautkramer USN 52R/USN 52L Selection of basic data In this function you set the different values which serve as a measurement basis and for the display indication. – With JC go to the BASIC function group. RANGE Calibration range In this function you set the display range for the A-Scan.
Krautkramer USN 52R/USN 52L Issue 05, 02/00 5- 5 H Note : The setting is limited by the set sound velocity . The measurement units for all settings – mm or inches – can be selected in the second operating level. MTL VEL Setting the sound velocity In this function you enter the test object’s sound veloc- ity as a reference value.
5- 6 Issue 05, 02/00 Krautkramer USN 52R/USN 52L Setting the receiver All functions for adjustment of the receiver can be found in the function group RCVR. – With JC go to the function group RCVR. FREQ. Frequency With this function you can set the operating frequency .
Krautkramer USN 52R/USN 52L Issue 05, 02/00 5- 7 DAMPING Electrical damping of the probe Y ou can use the function DAMPING to connect various resistors in parallel to the probe in order to achieve an optimum matching of the probe’s electrical impedance to the instrument.
5- 8 Issue 05, 02/00 Krautkramer USN 52R/USN 52L Setting the pulser In the function group PULS you can change the operat- ing mode and the pulse repetition rate of the pulser as well as operate the reject function. – Use JC to go to the function group PULS .
Krautkramer USN 52R/USN 52L Issue 05, 02/00 5- 9 REJECT Suppression of spurious echoes With the REJECT function you are able to suppress unwanted signals, e.g. material noise. The setting, given in percent, indicates the height that echoes have to reach in order to be displayed in the first place.
5- 10 Issue 05, 02/00 Krautkramer USN 52R/USN 52L Gate adjustment All functions for adjustment of Gates a and b are con- tained in the function group GA TE. – With JC go to function group GA TE. USN 52R/USN 52L make the two gates a and b avail- able.
Krautkramer USN 52R/USN 52L Issue 05, 02/00 5- 11 Operation: The MUL TECHO setting of the function MEASURE (lower operating level) is a prerequisite for operation. • Simultaneously press N and O in a-WIDTH or a-THRESH in order to switch to the settings for Gate b.
5- 12 Issue 05, 02/00 Krautkramer USN 52R/USN 52L Calibration functions USN 52R/USN 52L are accurately calibrated using the functions of the function group S-CAL . – With I go the function group S-CAL. H Note: Read Chapter 5.3 first in order to exactly set the sound velocity and the probe delay .
Krautkramer USN 52R/USN 52L Issue 05, 02/00 5- 13 MTL VEL Sound velocity In MTL VEL you set the value for the sound velocity in the material under test. Y ou can change between preset fixed values or continuously adjust the value. Operation: – Set the sound velocity in MTL VEL with M , e.
5- 14 Issue 05, 02/00 Krautkramer USN 52R/USN 52L Storing data This group contains functions for storage and recall of your data. – With I go the function group MEM.
Krautkramer USN 52R/USN 52L Issue 05, 02/00 5- 15 SET# Selection of data set Y ou are able to select the required data set number with this function. If necessary , an allocated data set name will be displayed at the same time. Additionally , you can give each data set a name with which it is stored.
5- 16 Issue 05, 02/00 Krautkramer USN 52R/USN 52L Clearing all data Y ou can clear all data sets (data logger and active in- strument settings). Operation: – Switch off the instrument. – Keep keys F , E and K simultaneously for approximately 10 seconds.
Krautkramer USN 52R/USN 52L Issue 05, 02/00 5- 17 5 .3 USN 52R/USN 52L calibration Calibration of display range Before you operate the instrument, you must calibrate it. Depending on the material and the dimensions of the test object, the sound velocity and the calibration range have to be set and the probe delay taken into consider- ation.
5- 18 Issue 05, 02/00 Krautkramer USN 52R/USN 52L Recommendation: As long as the echoes to be evaluated indicate a dis- tinct maximum amplitude, select the PEAK mode of measurement. Basic adjustment: Before calibrating the instrument, you must carry out the following basic adjustment: Group Function Setting BASIC DELA Y 0.
Krautkramer USN 52R/USN 52L Issue 05, 02/00 5- 19 – Increase ZERO until the correct sound path value for the echo is displayed. Example: – Carry out calibration on a 25 mm thick test piece for a calibration range of 100 mm. – Set RANGE to 100 mm – Set ZERO to 0.
5- 20 Issue 05, 02/00 Krautkramer USN 52R/USN 52L Calibration with angle-beam probes Known sound velocity In this case, it is sufficient when there is an echo from a known reflector with a known distance, e.
Krautkramer USN 52R/USN 52L Issue 05, 02/00 5- 21 Example: Calibration on a semicylinder having a radius of R=50 mm at a test range of 200 mm. – Set RANGE to 200 mm. – Set DELA Y and ZERO to 0. – Set MEASURE to MUL TECHO. – Couple the probe and peak the echoes.
5- 22 Issue 05, 02/00 Krautkramer USN 52R/USN 52L Higher sound velocity Due to the V -path error , a higher sound velocity than the test material is required when calibrating, especially with smaller thicknesses. This is typical of dual (T/R) probes and acts as compensation of the V -path error .
Krautkramer USN 52R/USN 52L Issue 05, 02/00 5- 23 Operation: – In the function CAL press N and O simultaneously . The function is now enabled. – REC 0 is displayed, indicating that no calibration echo has been recordet yet. – Set the gate onto the first calibration echo and enter the sound path in S-REF using M .
5- 24 Issue 05, 02/00 Krautkramer USN 52R/USN 52L MEASURE: MUL TECHO – for measurement between the first echoes in the gate sections. Above all, this setting is suitable for thickness measurement in the multiecho sequences. TOF: According to the application.
Krautkramer USN 52R/USN 52L Issue 05, 02/00 5- 25 5. 4 DAC/TCG The DAC/TCG function enables you to: • record a Distance-Amplitude Curve and to store it as an essential part of the current data set. • display the Distance-Amplitude Curve (DAC) of the reference echoes.
5- 26 Issue 05, 02/00 Krautkramer USN 52R/USN 52L Function group TCG With these functions you can operate all DAC/TCG modes. Use C to go to the function group TCG : DAC/TCG mode With this function you can determine the DAC/TCG mode: OFF: No DAC/TCG is active.
Krautkramer USN 52R/USN 52L Issue 05, 02/00 5- 27 • The two settings DAC and TCG can only be switched on if a curve was recorded beforehand, or if a data set containing a curve was recalled. REC: Use this setting to prepare the instrument for the recording of a DAC curve.
5- 28 Issue 05, 02/00 Krautkramer USN 52R/USN 52L 5 .5 Recording a Distance- Amplitude Curve A Attention: Recording of a new curve will delete a curve that possi- bly already exists. If necessary , make sure that the old curve is stored in a free data set before you start re- cording a new curve! Use C to go to the function group DAC .
Krautkramer USN 52R/USN 52L Issue 05, 02/00 5- 29 – Continue to proceed in this way until all available reference echoes are recorded. – Switch on the curve now by setting the DAC/TCG function to DAC : The record mode is automatically switched off, the curve is displayed, and all echo indications can be evaluated relative to this curve.
5- 30 Issue 05, 02/00 Krautkramer USN 52R/USN 52L H Note: If the DAC/TCG is active, the symbol T is additionally displayed in the status line: Operation Recording a Distance-Amplitude Curve 5- 30 Issu.
Krautkramer USN 52R/USN 52L Issue 05, 02/00 5- 31 5 .6 Echo evaluation with DAC/TCG T o be able to evaluate a flaw indication by means of the DAC/TCG, certain requirements have to be met: • The Distance-Amplitude Curve must already be recorded. • It only applies to the same probe that was used for recording the curve.
5- 32 Issue 05, 02/00 Krautkramer USN 52R/USN 52L DAC mode – Peak the echo of an assumed flaw and shift the gate so that the echo data are evaluated. – Y ou can read the sound path in the measurement line and, in addition with angle-beam probes, the (reduced) projection distance and the flaw depth.
Krautkramer USN 52R/USN 52L Issue 05, 02/00 5- 33 TCG mode A Attention: An echo amplitude evaluation as measurement of the difference to the reference echo is only possible if the reference height (height of the first reference echo) stored during the reference echo recording still applies.
5- 34 Issue 05, 02/00 Krautkramer USN 52R/USN 52L 5. 7 Measuring thickness USN 52R/USN 52L enable you to measure thickness and distance in a simple way . The measured value is directly displayed. One of the following two methods of measurement is used, depending on the application: • Measurement to the first echo – e.
Krautkramer USN 52R/USN 52L Issue 05, 02/00 5- 35 5 . 8 Storing measured values - Data Logger The Data Logger helps you to store and manage your measurement results.
5- 36 Issue 05, 02/00 Krautkramer USN 52R/USN 52L Operation: – Change to the second operating level and select the function group for the Data Logger . – Set the required number of FILES in FILE NUMBER: SET #01 = 1 FILE, SET #02 = 2 FILES, etc. – Simultaneously press M when the required number is displayed.
Krautkramer USN 52R/USN 52L Issue 05, 02/00 5- 37 Clearing FILES All cleared data are irrevocably lost. Therefore, transfer the data to a PC or printer beforehand if necessary . Operation: – Change to the second operating level and select the function group for the Data Logger .
5- 38 Issue 05, 02/00 Krautkramer USN 52R/USN 52L Viewing stored readings Y ou can select each measurement location and have the values displayed which are stored there. The follow- ing appear as measurement location status: EMPTY : no measurement stored x.
Krautkramer USN 52R/USN 52L Issue 05, 02/00 5- 39 5 . 9 Configuring the USN 52R/ USN 52L In the second operating level you will find all functions which do not have a direct influence on the A-scan. They are compiled into two function tables. – Press X to change from the first to the second operating level and back again.
5- 40 Issue 05, 02/00 Krautkramer USN 52R/USN 52L Left T able Left function group GRA TICULE Display graticule on/off AMPLITUDE Amplitude reading FREEZE MODE Storage mode INTENSITY , Display brightnes.
Krautkramer USN 52R/USN 52L Issue 05, 02/00 5- 41 Center T able Left function group A-SCAN Hollow or solid echo signal display LANGUAGE D isplay language DA T A SET DIREC Directory of all data sets DA.
5- 42 Issue 05, 02/00 Krautkramer USN 52R/USN 52L Right T able Left function group AUTO CAL Display graticule on/off GA TE LOGIC Am plitude reading MEASURE Storage mode T O F Display brightness Center function group AMPL.EV AL. Switching between DAC/TGC and DGS MEMO MEMO function on/off MEAS.
Krautkramer USN 52R/USN 52L Issue 05, 02/00 5- 43 GRA TICULE Display graticule In this function you either switch the display graticule on or off. In doing this, you are able to directly read off the echo positions and heights. Operation: – Highlight the left function group in the left function table with JC .
5- 44 Issue 05, 02/00 Krautkramer USN 52R/USN 52L FREEZE MODE Storage mode In this function you determine which display contents you wish to store: • FREEZE ALL: the complete A-scan presentation is stored. • FREEZE PEAK: the highest echo amplitude is stored.
Krautkramer USN 52R/USN 52L Issue 05, 02/00 5- 45 VELOCITY #1 Preselecting fixed values for VELOCITY #2 sound velocity When calibrating the display range, you can select be- tween two fixed sound velocity values in the coarse mode. In this function you determine which values are avail- able for selection.
5- 46 Issue 05, 02/00 Krautkramer USN 52R/USN 52L GA TE LOGIC Setting the gate logic In this function you can activate the gate and select the criteria for triggering the gate alarm. The following settings are available: • OFF: The gate is disabled.
Krautkramer USN 52R/USN 52L Issue 05, 02/00 5- 47 FILE NUMBER Selecting a file In this function you enter the number of FILES for the Data Logger . Y ou can also select specific measured values here.
5- 48 Issue 05, 02/00 Krautkramer USN 52R/USN 52L V ALUE Displaying the measured value The measured value at the selected location is dis- played: • EMTPY : No reading stored • xx.x mm: The stored reading Clearing the measured value: – Highlight the right function group in the left function table with I .
Krautkramer USN 52R/USN 52L Issue 05, 02/00 5- 49 LANGUAGE Setting the display language In LANGUAGE you can select the dialog language for interactive communication with the instrument.
5- 50 Issue 05, 02/00 Krautkramer USN 52R/USN 52L 5.10 D ata set names Data set names Y ou can give the instrument settings (data sets) alpha- numeric names which are also stored. In doing this you are able to identify your data. The data set number remains the clear identification (e.
Krautkramer USN 52R/USN 52L Issue 05, 02/00 5- 51 DA T A SET NAME Entry of a data set name This function is used for entering the data set name. Operation: – Highlight the left function group in the center function table using JC . – Select the required data set number with M .
5- 52 Issue 05, 02/00 Krautkramer USN 52R/USN 52L Y ou can overwrite characters that have already been entered simply by marking the corresponding position and selecting another character . DA T A SET DIREC Data set directory In this function you obtain a quick overlook over all stored data sets with their names and numbers.
Krautkramer USN 52R/USN 52L Issue 05, 02/00 5- 53 level and the function RECALL you are able to load this data set as usual. The directory function can be exited at any time by pressing X or F . MEMO Storing additional information Y ou can store additional information on every data set, either as freely formulated text (max.
5- 54 Issue 05, 02/00 Krautkramer USN 52R/USN 52L If USN 52R/USN 52L are set to the entry of freely for- mulated texts, you will see the following display: Entering texts In the two lower lines you will see letters, numbers and characters that you can use for the texts.
Krautkramer USN 52R/USN 52L Issue 05, 02/00 5- 55 The additional information is now stored together with the data set number . If the MEMO function was used for the selected data set, you will see the first 46 char- acters of the entered additional information instead of the menu bar in the PREVIEW mode (the first operating level).
5- 56 Issue 05, 02/00 Krautkramer USN 52R/USN 52L – Use the keys N or O to select the T AB character . The cursor flashes under T AB. – Press the keys N or O next to the entry strings to select another field. The flashing cursor changes the string automatically .
Krautkramer USN 52R/USN 52L Issue 05, 02/00 5- 57 5.11 Setting the RS232 interface In the center function group of the right table you will find all functions for setting the serial interface RS 232. If you connect a peripheral to the instrument via the RS232 interface, you must always ensure that both interfaces are configurated the same.
5- 58 Issue 05, 02/00 Krautkramer USN 52R/USN 52L COPY MODE Setting data communication In this function you select the data transfer mode when you press A : • HARD COPY : Printout of complete displa.
Krautkramer USN 52R/USN 52L Issue 05, 02/00 5- 59 5.12 Setting the flaw location calculation When using angle-beam probes, the flaw location can be automatically calculated.
5- 60 Issue 05, 02/00 Krautkramer USN 52R/USN 52L ANGLE Angle of incidence Y ou must set the value of the applied probe in order to enable automatic flaw location evaluation.
Krautkramer USN 52R/USN 52L Issue 05, 02/00 5- 61 O-DIAM T est object diameter Y ou need the function O-DIAM if you are dealing with circular curved surfaces, e.
5- 62 Issue 05, 02/00 Krautkramer USN 52R/USN 52L Automatic calibration The functions for automatic calibration are in the “ right “ function table: AU TO CA L Switches on automatic calibration GA TE LOGIC Sets the gate for calibration Description of automatic calibration can be found in Chapter 5.
Krautkramer USN 52R/USN 52L Issue 05, 02/00 5- 63 H Note: The measurement results are displayed in the measure- ment line. The corresponding symbol will appear in the status line: T OF Measurement mode for time of flight In this function you can select the mode of measure- ment for the time of flight/distance within the gate.
5- 64 Issue 05, 02/00 Krautkramer USN 52R/USN 52L 5.14 G – Locking set values Y ou are able to lock all set values against any uninten- tional or undesired adjustment. Operation: – Press G . All functions, with the exception of GAIN and FREEZE MODE ( E ), are locked.
Krautkramer USN 52R/USN 52L Issue 05, 02/00 5- 65 k c e h C t l u s e R k r a m e R y l p p u s r e w o P . 1 t n e m u r t s n i n o n r u T o g o l r e m a r k t u a r K e h T . t h g i l s D E L h t o B r e t f a s r a e p p a n a c s - A . s d n o c e s 2 r e t f a s r a e p p a .
5- 66 Issue 05, 02/00 Krautkramer USN 52R/USN 52L k c e h C t l u s e R k r a m e R e g n a R . 4 . 2 e e s s g n i t t e s r o F o t m m 5 m o r f h g u o r h t h c t i w s : E G N A R m m 0 0 0 5 : .
Krautkramer USN 52R/USN 52L Issue 05, 02/00 5- 67 k c e h C t l u s e R k r a m e R ) t c e j e R ( n o i s s e r p p u S . 7 . 2 e e s s g n i t t e s r o F H S % 0 8 r e d n u t s u j o h c e d n 2 e h t t e S % 0 8 T E S : T C E J E R . d e s s e r p p u s y l e v i t u c e s n o c e r a 5 o t 2 s o h c E 2 .
5- 68 Issue 05, 02/00 Krautkramer USN 52R/USN 52L k c e h C t l u s e R k r a m e R g n i p m a D . 9 : o s l A . 2 e e s s g n i t t e s r o F . s m h o K 1 : G N I P M A D n e h t , T H n e e r c s % 0 8 o t o h c e n a t e S . s m h o 0 5 d n a 5 7 , 0 5 1 o t G N I P M A D .
Krautkramer USN 52R/USN 52L Issue 05, 02/00 5- 69 k c e h C t l u s e R k r a m e R . t a e p e r d n a t e k c o s r e v i e c e r n i 0 3 N n o i t a c i f i t c e R . 2 1 . . 2 e e s s g n i t t e s r o F E V I T I S O P : C I G O L E T A G m m 7 4 : T R A T S - a m m 7 : H T D I W - a .
5- 70 Issue 05, 02/00 Krautkramer USN 52R/USN 52L k c e h C t l u s e R k r a m e R d l o h s e r h t e t a G . 3 1 . 2 e e s s g n i t t e s r o F E V I T I S O P : C I G O L E T A G % 0 4 : H S E R H T - a m m 0 3 : T R A T S - a m m 0 4 : H T D I W - a .
Krautkramer USN 52R/USN 52L Issue 05, 02/00 5- 71 k c e h C t l u s e R k r a m e R t n e m e r u s a e m s s e n k c i h T . 5 1 . 2 e e s s g n i t t e s r o F E V I T I S O P : C I G O L E T A G % 0 4 : H S E R H T - a m m 0 3 : T R A T S - a m m 0 0 1 : H T D I W - a .
5- 72 Issue 05, 02/00 Krautkramer USN 52R/USN 52L 5- 72 Issue 05, 02/00 Krautkramer USN 52R/USN 52L.
Krautkramer USN 52R/USN 52L Issue 05, 02/00 6- 1 Documentation 6 Krautkramer USN 52R/USN 52L Issue 05, 02/00 6- 1 Documentation 6.
6- 2 Issue 05, 02/00 Krautkramer USN 52R/USN 52L 6 .1 Printing instrument settings and display contents Using a common EPSON printer or an Epson compatible printer , the USN 52R/USN 52L o f fers you the opportunity to create a printout of the complete current display including the echo indications.
Krautkramer USN 52R/USN 52L Issue 05, 02/00 6- 3 H Note: In cases of doubt, refer to the technical specifications of the connected device. This is the only way to ensure error-free communication.
6- 4 Issue 05, 02/00 Krautkramer USN 52R/USN 52L Documentation Printing instrument settings and display contents 6- 4 Issue 05, 02/00 Krautkramer USN 52R/USN 52L Documentation Printing instrument sett.
Krautkramer USN 52R/USN 52L Issue 05, 02/00 6- 5 6 . 2 Documentation with the PC program UltraDOC With the special application program UltraDOC from Krautkrämer you are able to remote control your USN 52R/USN 52L and record instrument settings in your test report in an ASCII format or display contents in PCX or IMG formats.
6- 6 Issue 05, 02/00 Krautkramer USN 52R/USN 52L 6- 6 Issue 05, 02/00 Krautkramer USN 52R/USN 52L.
Krautkramer USN 52R/USN 52L Issue 05, 02/00 7- 1 Servicing and maintenance 7 Krautkramer USN 52R/USN 52L Issue 05, 02/00 7- 1 Servicing and maintenance 7.
7- 2 Issue 05, 02/00 Krautkramer USN 52R/USN 52L 7 . 1 Cleaning the USN 52R/ USN 52L The instrument can be easily cleaned because, due to the membrane keypad, there are no protruding parts on which dirt could collect. We advise you to only use a damp cloth to clean the instrument and the necessary accessories.
Krautkramer USN 52R/USN 52L Issue 05, 02/00 7- 3 Handling NiCd cells The capacity and life of NiCd cells is dependent on correct handling. Y ou should therefore observe the following: • Do not charge NiCd cells until they are discharged to the automatic cutout point in normal operation.
7- 4 Issue 05, 02/00 Krautkramer USN 52R/USN 52L 7- 4 Issue 05, 02/00 Krautkramer USN 52R/USN 52L.
Krautkramer USN 52R/USN 52L Issue 05, 02/00 8- 1 Interfaces, Peripherals 8 Krautkramer USN 52R/USN 52L Issue 05, 02/00 8- 1 Interfaces, Peripherals 8.
8- 2 Issue 05, 02/00 Krautkramer USN 52R/USN 52L 8.1 Interfaces Serial interface RS 232 The 7 pin connector at the back of the instrument is the bidirectional interface RS 232. It enables data transfer to an external device, e.g. printer , PC or the DR1 Data Recorder from Krautkrämer .
Krautkramer USN 52R/USN 52L Issue 05, 02/00 8- 3 Layout of 7 pin Lemo socket (RS 232) Layout of 7 pin Lemo socket RS 232 n i P n o i t p i r c s e D n o i t c e r i D l e v e L 1 d n u o r g 2 V 5 + 3.
8- 4 Issue 05, 02/00 Krautkramer USN 52R/USN 52L Layout of 4 pin Lemo socket (charger socket, switching output) Layout of 4 pin Lemo socket n i P n o i t p i r c s e D n o i t c e r i D l e v e L 1 d n u o r g 2 e g r a h ct u p n i 3 n o i t c e n n o c s n i a mt u p n iC D V 0 1 .
Krautkramer USN 52R/USN 52L Issue 05, 02/00 8- 5 8 . 2 Connection of a peripheral Peripherals are connected to the instrument via the RS 232 interface.
8- 6 Issue 05, 02/00 Krautkramer USN 52R/USN 52L 8 .3 T ransferring the display contents H Note: The output is formated on an Epson matrix printer with Intelligent Serial Interface as well as on a Seiko DPU. Y ou can print the active display contents by pressing A .
Krautkramer USN 52R/USN 52L Issue 05, 02/00 8- 7 Operation: – Set COPY MODE to REPORT . – If you wish to print the contents of the active measurement set from the A-Scan, return to the A- Scan display . – Activate printing with A . Empty measurement locations and files are not printed.
8- 8 Issue 05, 02/00 Krautkramer USN 52R/USN 52L FILE HEADER: The file number , serial number and software version are automatically entered here. There is space for the operator to enter: company name, file name, opera- tor ID, type of probe used, date and comments.
Krautkramer USN 52R/USN 52L Issue 05, 02/00 8- 9 H Note: Any measurement value that has been damaged in memory is thus detected and “ ERROR “ is transmitted in its place.
8- 10 Issue 05, 02/00 Krautkramer USN 52R/USN 52L Printing display contents and instrument settings Operation: – Set COPY MODE to DISP + PDUMP . – If necessary , optimize the A-Scan. or – Set COPY MODE to P ARAMETER DUMP . – With A activate printing.
Krautkramer USN 52R/USN 52L Issue 05, 02/00 8- 11 blank space bar X Number 0-9 . Decimal point IN Unit INCH MM Unit MM C R Carriage Return L F Line Feed . o N - e t y B 1 2 3 4 5 6 7 8 9 0 1 1 1 2 1 3 1 N I X X X . X t a m r o F a t a D k n a l bX . X X X k n a l bI N k n a l bk n a l bR CF L N I X X .
8- 12 Issue 05, 02/00 Krautkramer USN 52R/USN 52L 8 . 6 USN 52R/USN 52L remote operation Y ou can remote control the instrument from a PC. Data transfer is carried out with remote control codes. These codes represent instructions which relate to individual USN 52R/USN 52L functions.
Krautkramer USN 52R/USN 52L Issue 05, 02/00 8- 13 n o i t c n u F e d o C g n i t t e S n o i t u l o s e R E D U T I L P M A A ST H N E E R C S % : 0 D L O H S E R H T B d : 1 1 e d u t i l p m A g n.
8- 14 Issue 05, 02/00 Krautkramer USN 52R/USN 52L n o i t c n u F e d o C g n i t t e S n o i t u l o s e R e r u g i f n o C r e g g o L a t a D L Dd e r a e l c : 0 d e r u g i f n o c : 1 1 # T E S.
Krautkramer USN 52R/USN 52L Issue 05, 02/00 8- 15 n o i t c n u F e d o C g n i t t e S n o i t u l o s e R T X E T O M E M T M' g n i r t s ' # # d l e i f f o .
8- 16 Issue 05, 02/00 Krautkramer USN 52R/USN 52L n o i t c n u F e d o C g n i t t e S n o i t u l o s e R E R O T S D S: 0 F F O N O : 1 1 S S E N K C I H T H Tm m 0 0 0 5 - 1 .
Krautkramer USN 52R/USN 52L Issue 05, 02/00 8- 17 8 . 7 Configuring the MEMO function If the MEMO function is switched on, you are able to store additional information on every data set for a bet- ter documentation.
8- 18 Issue 05, 02/00 Krautkramer USN 52R/USN 52L between 1 and 6 for ## . $$ stands for the length of the field, text for the field label. The length of the name must not exceed the field length.
Krautkramer USN 52R/USN 52L Issue 05, 02/00 8- 19 Memo function Interfaces, Peripherals Entering MEMO text: <ESC> MT ## text <RETURN>, in which connection ## must be the number of a de- fined field. text stands for the required text. The length of the text must not exceed the field length.
8- 20 Issue 05, 02/00 Krautkramer USN 52R/USN 52L n o i t c n u F O M E L n o i t c e n n o c R 2 5 N S U g o l a n a r o l o c e l b a C N A N U e l b a c e d u t i l p m A 1 n w o r b d n u o r G 2 .
Krautkramer USN 52R/USN 52L Issue 05, 02/00 8- 21 Analog voltage for the echo amplitude (echo in the monitor gate) a) Rectified echoes 0 volt: no echo in the gate; echo amplitude = 0% screen HT 2.5 volts: echo amplitude = 128% screen HT b) RF mode -1.
8- 22 Issue 05, 02/00 Krautkramer USN 52R/USN 52L TTL switching output The switching output serves for external control pur- poses if there is a gate alarm.
Krautkramer USN 52R/USN 52L Issue 05, 02/00 9- 1 Specifications 9 Krautkramer USN 52R/USN 52L Issue 05, 02/00 9- 1 Specifications 9.
9- 2 Issue 05, 02/00 Krautkramer USN 52R/USN 52L Range From 5 to 5000 mm for steel long , continuously variable or variable in fixed steps Material velocity Continuously adjustable from 1000 to 9999 m/s, 2 programmable fixed values Pulse shift From -20 to +784 µs, depending on range setting Delay for digital time-of-flight measuremen t Approx.
Krautkramer USN 52R/USN 52L Issue 05, 02/00 9- 3 Display rectification Half-wave positive/negative, full-wave and RF Frequency (-3dB ranges) 0.4 MHz to 10 MHz 2 MHz to 8 MHz 0.
9- 4 Issue 05, 02/00 Krautkramer USN 52R/USN 52L Gate V ariable over the whole sweep range in steps of 0.1 mm, alarm indication with flashing LEDs, threshold adjustment from 10 to 90% screen height, s.
Krautkramer USN 52R/USN 52L Issue 05, 02/00 9- 5 DGS evaluation (option) 13 fixed-programmed probes, one probe user-definable; sound attenuation correction for reference block and test object, transfe.
9- 6 Issue 05, 02/00 Krautkramer USN 52R/USN 52L 9- 6 Issue 05, 02/00 Krautkramer USN 52R/USN 52L.
Krautkramer USN 52R/USN 52L Issue 05, 02/00 10- 1 Appendix 10 Krautkramer USN 52R/USN 52L Issue 05, 02/00 10- 1 Appendix 10.
10 -2 Issue 05, 02/00 Krautkramer USN 52R/USN 52L 10.1 Function directory In the first column of the following table, all function names are listed (function group or table in brackets). The second column contains a brief description of the corresponding function.
Krautkramer USN 52R/USN 52L Issue 05, 02/00 10- 3 Function Description a-ST ART (G A TE ) Selection of the start point of the corresponding gate a-THRESH (G A T E) Adjustment of the level of the gate .
10 -4 Issue 05, 02/00 Krautkramer USN 52R/USN 52L Function Description DA T A SET (MEM) Selection of a data set which is to be stored or loaded DA T A SET DIREC (left) Recalls directory of all data se.
Krautkramer USN 52R/USN 52L Issue 05, 02/00 10- 5 Function Description LANGUAGE (center) Selection of the instrument dialog language LENGTH (center) Determination of the byte length for data transfer .
10 -6 Issue 05, 02/00 Krautkramer USN 52R/USN 52L Function Description REJECT (PULS) Suppression of unwanted signals REP-RA TE (PULS) Change of pulse repetition rate STORE (MEM ) Storage of a data set.
Krautkramer USN 52R/USN 52L Issue 05, 02/00 10- 7 10.2 E C Certificate of Conformity USN 52R/USN 52L conform to the following EU directives: • 89/336/EEC (Electromagnetic compatibility) • 73/23/EE.
10 -8 Issue 05, 02/00 Krautkramer USN 52R/USN 52L 10.3 Service addresses USN 52R/USN 52L are made with high-quality components according to the latest production methods. Strict intermediate inspections and a quality assurance system, certified according to DIN ISO 9001, guarantee optimum quality of conformance of the instrument.
Krautkramer USN 52R/USN 52L Issue 05, 02/00 10- 9 UK Buehler Krautkramer Ltd. Milburn Hill Road University of Warwick Science Park GB - Coventry CV4 7HS Phone: +44 - 24 - 7669 - 00 69 T elefax: +44 - 24 - 7669 - 30 32 Japan Krautkrämer Japan Co., Ltd.
10-10 I ssue 05, 02/00 Krautkramer USN 52R/USN 52L 10-10 I ssue 05, 02/00 Krautkramer USN 52R/USN 52L.
Krautkramer USN 52R/USN 52L Issue 05, 02/00 11- 1 Changes 11 Krautkramer USN 52R/USN 52L Issue 05, 02/00 11- 1 Changes 11.
11 -2 Issue 05, 02/00 Krautkramer USN 52R/USN 52L This chapter contains descriptions of any recent changes if applicable. Otherwise this chapter will remain empty . Changes 11 -2 Issue 05, 02/00 Krautkramer USN 52R/USN 52L This chapter contains descriptions of any recent changes if applicable.
Krautkramer USN 52R Issue 05, 02/00 12 -1 Index 12 Krautkramer USN 52R Issue 05, 02/00 12 -1 Index 12.
12 -2 Issue 05, 02/00 Krautkramer USN 52R/USN 52L Index A A-Scan 4-4 displaying stored 5-16 preview function 5-16 a-ST ART 5-1 1 a-THRESH 5-11 a-WIDTH 5-11 Accelerated adjustment 4-10 Accessories 2-4 .
Krautkramer USN 52R/USN 52L Issue 05, 02/00 1 2- 3 Index D DAC echo evaluation 5-31 recording a DAC curve 5-28 DAC/TCG 5-25 DAMPING 5-7 Data communication, setting 5-58 Data Logger clearing files 5-37.
12 -4 Issue 05, 02/00 Krautkramer USN 52R/USN 52L Index F Features of the USN 52R/USN 52L 1-8 FILE MODE 5-48 FILE NUMBER 5-37, 5-47 Flaw location calculation 5-59 FREEZE MODE 5-44 FREQ.
Krautkramer USN 52R/USN 52L Issue 05, 02/00 1 2- 5 Index LENGTH 5-57 Limits of testing 1-5 LOCA TION 5-47 Lock key 4-12 Lock on/off key 4-12 Locking set values 5-64 M Magnifying key 4-12 Material of t.
12 -6 Issue 05, 02/00 Krautkramer USN 52R/USN 52L Index Parity test 6-2 Power supply 3-2 Printer preparing 6-2 types 2-5 PRINTER SELECT 5-58, 6-3 Printing Data Logger report 8-6 display contents 6-2 i.
Krautkramer USN 52R/USN 52L Issue 05, 02/00 1 2- 7 Index Special keys 4-8 USN 52L 4-9 Status line 4-6 Step range, setting 5-45 STORE 5-15 Stored data sets 5-52 Storing 5-35 additional information 5-53.
12 -8 Issue 05, 02/00 Krautkramer USN 52R/USN 52L X X-V ALUE 5-60 Z ZERO 5-13 Zoom key 4-12 Index 12 -8 Issue 05, 02/00 Krautkramer USN 52R/USN 52L X X-V ALUE 5-60 Z ZERO 5-13 Zoom key 4-12 Index.
Option DGS Operating Manual Option DGS Operating Manual.
DGS-2 I ssue 02, 03/99 Krautkramer USN 52R/USN 52L Option DGS This issue 02, 05/99 applies to the following software version: R5 TCG/DGS R6 TCG/DGS L4 TCG/DGS L5 TCG/DGS All rights reserved for techni.
Krautkramer USN 52R/USN 52L Option DGS Issue 02, 03/99 DGS-3 Introduction ...................................... DGS-5 1. 1 How to measure with the DGS ........... DGS-6 1. 2 Overview of the method of proceeding ........................ DGS-8 Overview of the DGS menu .
DGS-4 I ssue 02, 03/99 Krautkramer USN 52R/USN 52L Option DGS DGS-4 I ssue 02, 03/99 Krautkramer USN 52R/USN 52L Option DGS.
Krautkramer USN 52R/USN 52L Option DGS Issue 02, 03/99 DGS-5 Introduction 1 Krautkramer USN 52R/USN 52L Option DGS Issue 02, 03/99 DGS-5 Introduction 1.
DGS-6 I ssue 02, 03/99 Krautkramer USN 52R/USN 52L Option DGS 1 . 1 How to measure with the DGS The DGS option (Distance - Gain - Size) enables you to compare the reflecting power of a natural flaw in the test object with the reflecting power of a theoretical flaw (disk-shaped reflector) at the same depth.
Krautkramer USN 52R/USN 52L Option DGS Issue 02, 03/99 DGS-7 The advantage of this method lies in the fact that you can carry out reproducible evaluations of small discontinuities. The reproducibility is especially impor- tant if you want to carry out e.
DGS-8 I ssue 02, 03/99 Krautkramer USN 52R/USN 52L Option DGS 1 . 2 Overview of the method of proceeding Record a reference echo and adjust the required record- ing level. The reference echo reflector may be disk shaped, a side drilled hole, or a backwall.
Krautkramer USN 52R/USN 52L Option DGS Issue 02, 03/99 DGS-9 Overview of the DGS menu 2 Krautkramer USN 52R/USN 52L Option DGS Issue 02, 03/99 DGS-9 Overview of the DGS menu 2.
DGS-10 I ssue 02, 03/99 Krautkramer USN 52R/USN 52L Option DGS 2 .1 DGS mode Switch from TCG to DGS mode The DGS function is activated in the second operation level. – Press X to switch to the second operation level. – With U go to the “right“ function table.
Krautkramer USN 52R/USN 52L Option DGS Issue 02, 03/99 DGS-11 Function group DGS mode In the first operation level you can carry out a DGS measurement.
DGS-12 I ssue 02, 03/99 Krautkramer USN 52R/USN 52L Option DGS Menu functions n o i t c n u F n o i t p i r c s e D s n o i t p O / s e g n a R s y e K N I A G e h t , n o d e h c t i w s e d o m S G D e h t h t i W n i a g e c n e r e f e r s e t a c i d n i n o i t c n u f N I A G .
Krautkramer USN 52R/USN 52L Option DGS Issue 02, 03/99 DGS-13 Function table DGS mode In the second operation level you can make the default settings for a DGS measurement.
DGS-14 I ssue 02, 03/99 Krautkramer USN 52R/USN 52L Option DGS Menu functions n o i t c n u F n o i t p i r c s e D s n o i t p O / s e g n a R s y e K # - E B O R P e h t h t i w r e b m u n D I e b o r P e b o r p g n i d n o p s e r r o c 3 1 - 1 .
Krautkramer USN 52R/USN 52L Option DGS Issue 02, 03/99 DGS-15 n o i t c n u F n o i t p i r c s e D s n o i t p O / s e g n a R s y e K U Q E R F - X t n e m e l e e b o r p e h t f o y c n e u q e r Fe b o r p r o f z H M 0 1 - 5 .
DGS-16 I ssue 02, 03/99 Krautkramer USN 52R/USN 52L Option DGS DGS-16 I ssue 02, 03/99 Krautkramer USN 52R/USN 52L Option DGS.
Krautkramer USN 52R/USN 52L Option DGS Issue 02, 03/99 DGS-17 Operating the DGS 3 Krautkramer USN 52R/USN 52L Option DGS Issue 02, 03/99 DGS-17 Operating the DGS 3.
DGS-18 I ssue 02, 03/99 Krautkramer USN 52R/USN 52L Option DGS For general information on operation, please refer to the USN 52 R Operating Manual. A Attention: Y ou cannot estimate any flaw sizes with the DGS op- tion of the USN 52R/USN 52L.
Krautkramer USN 52R/USN 52L Option DGS Issue 02, 03/99 DGS-19 – Enter a probe name as follows: – Simultaneously press N and O allocated to the function P-NAME . Y ou will see the following display: – Press the keys T or V in order to change the entry position.
DGS-20 I ssue 02, 03/99 Krautkramer USN 52R/USN 52L Option DGS H Note: Before entering the probe parameters, please read the probe data sheet. – Enter the material velocity in the probe delay line (function DEL-VEL ). – T ag the mid column of the DGS function group: J or C – Enter the element diameter .
Krautkramer USN 52R/USN 52L Option DGS Issue 02, 03/99 DGS-21 For the reference echo you need a test block with a known reflector . This reflector can be one of the follow- ing types: • backwall • disk-shaped reflector • side-drilled hole.
DGS-22 I ssue 02, 03/99 Krautkramer USN 52R/USN 52L Option DGS H Note: There are 13 probes with the corresponding parameters stored in the unit. Y ou can enter a probe of your own at probe number 16, please refer to Storing a new probe , Chapter 3. H Note: All of the following parameters must be programmed in order to generate a DGS curve.
Krautkramer USN 52R/USN 52L Option DGS Issue 02, 03/99 DGS-23 Example: If the surface of the test object is greatly corroded and the reference echo originates from a smooth surface reference block, then the sensitivity is reduced (e.g. by 8 dB). Correspondingly , the value for the transfer correction must be entered negative , e.
DGS-24 I ssue 02, 03/99 Krautkramer USN 52R/USN 52L Option DGS H Note: If the reference echo symbol does not appear , no refer- ence echo was recorded. Possible reasons are: • The reference echo is outside of the monitor gate. • The amplitude of the refernce echo is either too low or too high.
Krautkramer USN 52R/USN 52L Option DGS Issue 02, 03/99 DGS-25 The display shows a DGS curve: If you vary the reference gain, the curve moves verti- cally up or down, depending on the direction in which you are varying the gain. This is used for dynamic ex- tension beyond the visible section of the curve.
DGS-26 I ssue 02, 03/99 Krautkramer USN 52R/USN 52L Option DGS H Note: If the DGS function is switched on while you vary a parameter that affects the stored reference echo, or when you use another probe, the following message is displayed: “ Clear REF and confirm with HOME ” This text remains blinking on the display for a few sec- onds.
Krautkramer USN 52R/USN 52L Option DGS Issue 02, 03/99 DGS-27 3 .5 Storing data With the function STORE (function group MEM) you store your acitve instrument setting and the active A- Scan including the reference echo.
DGS-28 I ssue 02, 03/99 Krautkramer USN 52R/USN 52L Option DGS DGS-28 I ssue 02, 03/99 Krautkramer USN 52R/USN 52L Option DGS.
Krautkramer USN 52R/USN 52L Option DGS Issue 02, 03/99 DGS-29 Codes for remote control 4 Krautkramer USN 52R/USN 52L Option DGS Issue 02, 03/99 DGS-29 Codes for remote control 4.
DGS-30 I ssue 02, 03/99 Krautkramer USN 52R/USN 52L Option DGS The USN 52R/USN 52L option DGS can receive coded commands from a PC. T o enable this you must connect the instrument with the PC via the RS232 interface. (Please refer to USN 52R/USN 52L Operating Manual, chap.
Krautkramer USN 52R/USN 52L Option DGS Issue 02, 03/99 DGS-31 n o i t c n u F e d o C r e t e m a r a P / e g n a R n o i t u l o s e R F E R - T T A R Am / B d 0 0 1 - 01 T S E T - T T A S Am / B d 0 0 1 - 01 R O C - L P M A V AB d 0 2 + - 0 2 – 5 .
DGS-32 I ssue 02, 03/99 Krautkramer USN 5 /USN 52L Option DGS DGS-32 I ssue 02, 03/99 Krautkramer USN 5 /USN 52L Option DGS.
Un punto importante, dopo l’acquisto del dispositivo (o anche prima di acquisto) è quello di leggere il manuale. Dobbiamo farlo per diversi motivi semplici:
Se non hai ancora comprato il Epson USN 52L è un buon momento per familiarizzare con i dati di base del prodotto. Prime consultare le pagine iniziali del manuale d’uso, che si trova al di sopra. Dovresti trovare lì i dati tecnici più importanti del Epson USN 52L - in questo modo è possibile verificare se l’apparecchio soddisfa le tue esigenze. Esplorando le pagine segenti del manuali d’uso Epson USN 52L imparerai tutte le caratteristiche del prodotto e le informazioni sul suo funzionamento. Le informazioni sul Epson USN 52L ti aiuteranno sicuramente a prendere una decisione relativa all’acquisto.
In una situazione in cui hai già il Epson USN 52L, ma non hai ancora letto il manuale d’uso, dovresti farlo per le ragioni sopra descritte. Saprai quindi se hai correttamente usato le funzioni disponibili, e se hai commesso errori che possono ridurre la durata di vita del Epson USN 52L.
Tuttavia, uno dei ruoli più importanti per l’utente svolti dal manuale d’uso è quello di aiutare a risolvere i problemi con il Epson USN 52L. Quasi sempre, ci troverai Troubleshooting, cioè i guasti più frequenti e malfunzionamenti del dispositivo Epson USN 52L insieme con le istruzioni su come risolverli. Anche se non si riesci a risolvere il problema, il manuale d’uso ti mostrerà il percorso di ulteriori procedimenti – il contatto con il centro servizio clienti o il servizio più vicino.
