Manuale d’uso / di manutenzione del prodotto 787 del fabbricante Fluke
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® 787 ProcessMeter Users Manual April 1997, Rev.3, 12/01 © 1997, 1898, 2000, 2001 Fluke Corporation, All rights reserved. Printed in U.S.A . All product names are trademarks of their respective companies.
LIMITED WARRANTY & LIMITATION OF LIABILITY This Fluke produc t will be free from defects in material and workm anship for three years from the date of purchas e. This warranty does not c over dispos able batteries or damage from accident, neglec t, misuse or abnorm al conditions of operation or handling.
i Table of Contents Title Page Introduction................................................................................................................... .1 Contacting Fluke ........................................................................
787 Users M anual ii Simulate Mode .......................................................................................................... 22 Changing the Current Span ................................................................................
1 ProcessMeter Introduction W Warning Read “Safety Information” before you use the meter. Your Fluke 787 Proces sMeter (referred to as “the meter”) is a handheld, battery -operated tool for measuring electrical param eters and supply ing steady or ramping current to test proc ess ins truments.
787 Users M anual 2 Address c orrespondence to: Fluke Corporation Fluke Europe B.V. P.O. Box 9090, P.O. Box 1186, Everett, WA 98206-9090 5602 BD Eindhoven USA The Netherlands Or vis it us on the World Wide Web: www.fluke .com Safety Informa tion The meter complies with IEC1010-1, ANSI/ISA S82.
ProcessMeter Safety Information 3 • Make sure the battery door is closed and latched before you operate the meter. • Remove test leads from the meter before you open the battery door. • Inspect the test leads for damaged insulation or exposed metal.
787 Users M anual 4 Table 1. International Symbols Symbol Meaning Symbol Meaning Alternating current Earth ground Direct curre n t Fuse c Alternating or direct current Conforms to European U nion directives Refer to the manual for information about this feature.
ProcessMeter How to Get Started 5 How to Get Started If you are familiar with the Fluk e 80 Series DMM , read “Using the Current Output Func tions,” review the tables and figures in “Getting Ac quainted with the Meter,” and begin using your m eter.
787 Users M anual 6 Getting Acquainted with the Meter To become fam iliar with the features and functions of the meter, study the following figures and tables. • Figure and Table 2 describe the input/output ja cks. • Figure and Table 3 describe the input func tions y ou get with the first five rotary switch pos itions.
ProcessMeter Getting Acquainted with the M eter 7 Table 2. Input/Output Jacks Item Jack Measurement Functions Source Current Function Simulate Transmitter Function A c A Input for current to 440 mA continuous. (1A for up to 30 seconds .) Fused with a 440 mA fuse.
787 Users M anual 8 4 3 5 1 2 6 OFF mA mA A mA mV V V OUTPUT ee002f.eps Figure 3. Rotary Switch Positions for Measurements.
ProcessMeter Getting Acquainted with the M eter 9 Table 3. Rotary Switch Positions for Measurements No. Position Function(s) Pushbutton Actions A OFF Meter off B V A Default: measure ac V F Frequency c ounter M Selects a M IN, MAX, or AVG ac tion (see pg.
787 Users M anual 10 OFF mA mA A mA mV V V OUTPUT 2 1 ee008.eps Figure 4. Rotary Switch Positions for mA Output.
ProcessMeter Getting Acquainted with the M eter 11 Table 4. Rotary Switch Positions for mA Output No. Position Default Function Pushbutton Actions A OUTPUT [ mA Test leads in SOURCE: Source 0% mA Test leads in SIMULATE: Sink 0% mA % STEP X or W : Adjusts output up or down to the nex t 25% step COARSE Z or Y : Adjusts output up or down 0.
787 Users M anual 12 2 3 1 5 4 6 7 8 MIN MAX RANGE HOLD H REL Hz % STEP COARSE FINE ee003f.eps Figure 5. Pushbuttons Table 5. Pushbuttons No. Pushbutton Function(s) A b Toggles the back light B U (BLU.
ProcessMeter Getting Acquainted with the M eter 13 Table 5. Pushbuttons (cont.) No. Pushbutton Function(s) C X M % STEP Measuring: Selects a M IN, MAX, or AVG ac tion (see pg.
787 Users M anual 14 1 5 3 2 4 8 6 7 9 10 12 11 ee004f.eps Figure 6. Elements of the Display.
ProcessMeter Getting Acquainted with the M eter 15 Table 6. Display No. Element Meaning A Percentage display Shows the mA m easured value or output lev el in %, in a 0-20 mA or 4-20 mA scale (change s.
787 Users M anual 16 Table 6. Display (cont.) No. Element Meaning J mA, DC, mV, AC, M or k Ω , kHz Show the input or output units and multipliers assoc iated with the numerals K Auto 400100030 Range status indic ators: Auto means autoranging is on. The number plus the unit and m ultiplier indicate the active range.
ProcessMeter Measuring Elec trical Parameters 17 Measuring Electrical Parameters The proper sequence for tak ing measurements is as follows: 1. Plug the test leads into the appropriate ja cks. 2. Set the rotary knob. 3. Touch the probes to the tes t points.
787 Users M anual 18 Testing Diodes To test a single diode: 1. Insert the red test lead into the V jack an d black tes t lead into the COM jack. 2. Set the rotary switc h to O . 3. Press the BLUE pushbutton so that the D sym bol is on the display . 4.
ProcessMeter Measuring Elec trical Parameters 19 Using TouchHold Note You must hav e MIN MAX rec ording off to use TouchHold. ! Warning To avoid possible electric shock, do not use TouchHold to determine if dangerous voltage is present. TouchHold will not capture unstable or noisy readings.
787 Users M anual 20 Using the Current Output Functions The meter provides steady, s tepped, and ramped current output for testing 0-20 mA and 4-20 m A current loops. You can choos e source m ode, in which the m eter supplies the c urrent, or simulate mode, in w hich the meter regulates c urrent in an externally-powered c urrent loop.
ProcessMeter Using the Current Output Func tions 21 OFF A mA COM V 1000V 30mA FUSED 0.44A (1A / 30 sec) FUSED mA mA A mA OUTPUT 0-24mA SOURCE SIMULATE + + % STEP COARSE FINE mV V V OUTPUT CAT 787 PROCESSMETER MIN MAX RANGE HOLD H REL Hz 40 20 0 100 80 60 ee010f.
787 Users M anual 22 Simulate Mode Simulate mode is s o named becaus e the meter sim ulates a current loop transm itter. Use sim ulate mode when an external dc v oltage of 24 to 30V is in series with the current loop under test. Caution Set the rotary switch to one of the mA output settings BEFORE you connect the test leads to a current loop.
ProcessMeter Using the Current Output Func tions 23 OFF A mA COM V 1000V 30mA FUSED 0.44A (1A / 30 sec) FUSED mA mA A mA OUTPUT 0-24mA SOURCE SIMULATE + + % STEP COARSE FINE mV V V OUTPUT CAT 787 PROCESSMETER MIN MAX RANGE HOLD H REL Hz dc V Power Supply 40 20 0 100 80 60 COM +24V ee011f.
787 Users M anual 24 Producing a Steady mA Output When the rotary switc h is in the OUTPU T [ mA position, and the OUTPUT ja cks are c onnected to an appropriate load, the meter produces a steady m A dc output. The meter begins s ourcing or simulating 0%.
ProcessMeter Using the Current Output Func tions 25 Manually Stepping the mA Output When the rotary switc h is in the OUTPU T [ mA position, and the OUTPUT ja cks are c onnected to an appropriate load, the meter produces a steady m A dc output. The meter begins s ourcing or simulating 0%.
787 Users M anual 26 Table 10. mA Step Values Step Value (for each span setting) 4 to 20 mA 0 to 20 mA 0% 4.000 mA 0.000 mA 25% 8.000 mA 5.000 mA 50% 12.
ProcessMeter Power-Up Options 27 Power-Up Options To select a pow er-up option, hold down the pushbutton shown in Table 11 while turning the rotary switch from OFF to any on pos ition. Wait 2 seconds before y ou release the pushbutton after powering up the m eter.
787 Users M anual 28 Battery Life W Warning To avoid false readings, which could lead to possible electric shock or personal injury, replace the battery as soon as the battery indicator ( B ) appears. Table 12 shows ty pical alkaline battery life. To preserve battery life: • Use current s imulation instead of s ourcing when possible.
ProcessMeter Maintenance 29 Holster with Flex-Stand bent Holster with Flex-Stand extended Holster with probe in clip Holster with Flex-Stand looped over wall Meter in holster face down for protection (Store Quick Reference Card under meter) Holster with Flex-Stand looped over belt ee009f.
787 Users M anual 30 Replacing the Battery ! Warning To avoid electrical shock, remove test leads from the meter before you open the battery door. Close and latch the battery door before you use the meter. Remove tes t leads from the m eter before you open the battery door.
ProcessMeter Maintenance 31 Replacing a Fuse ! Warning To avoid personal injury or damage to the meter, use only the specified replacement fuse, 440 mA 1000V fast-blow, Fluke PN 943121. Both current input ja cks are fu sed wi th a s eparate 440 mA fuse.
787 Users M anual 32 If the Meter does not Work • Examine the c ase for physic al damage. If there is damage, make no further attem pt to use the meter, and contact a Fluk e Service Center. • Check the battery , fuses, and tes t leads. • Review this m anual to make s ure you are using the corre ct ja cks and rotary switch pos ition.
ProcessMeter Replacement Parts and Acces sories 33 Replacement Parts and Accessories ! Warning To avoid personal injury or damage to the meter, use only the specified replacement fuse, 440 mA 1000V fast-blow, Fluke PN 943121. Note When servic ing the meter, use only the replacement parts specified here.
787 Users M anual 34 Table 13. Replacement Parts Item Description Fluke PN or Model no. Quantity BT1 9V battery, ANSI/NEDA 1604A or IEC 6LR61 614487 1 CG81Y Holster, Yellow CG81G 1 ! F1, 2 Fuse, 440 m.
ProcessMeter Replacement Parts and Acces sories 35 F2 F1 MP8 H2, 3, 4 BT1 H5, 6 MP85 MP86 Holster CG81Y AC70A Alligator Clips TL20 (Option) Industrial Test Lead Set S1 MP92 Product Overview Manual CD-ROM (Users Manual) TL75 Test Lead Set MP89, 90 ee015c.
787 Users M anual 36 Specifications All specific ations apply from +18 ° C to +28 ° C unles s stated otherwise. All specific ations ass ume a 5 minute w armup period. The standard spec ification interval is 1 year. Note “Counts” means number of incr ements or decrements of the least signific ant digit.
ProcessMeter Specifications 37 DC Millivolts Measurement Range (mV dc) R esolution Accuracy (% of Reading + Counts) 400.0 0. 1 mV 0.1% + 1 AC Volts Measurement Range (ac) Resolution Accuracy, ± (% of Reading + Counts) 50 Hz to 60 Hz 45 Hz to 200 Hz 200 Hz to 500 Hz 400.
787 Users M anual 38 AC Current Measurement Range 45 Hz to 2 kHz Resolution Accuracy, ± (% of Reading + Counts) Typical Burden Voltage 1.000A (Note) 0.001A 1% + 2 1.5V/A Note: 440 mA continuous , 1A 30 seconds maxim um Specifications are valid from 5% to 100% of am plitude range.
ProcessMeter Specifications 39 Ohms Measurement Range Resolution Measurement Current Accuracy, ± (% of Reading + Counts) 400.0 Ω 0. 1 Ω 220 µ A 0.2% + 2 4.000 k Ω 0.001 k Ω 59 µ A 0.2% + 1 40.00 k Ω 0.01 k Ω 5.9 µ A 0.2% + 1 400.0 k Ω 0.
787 Users M anual 40 Frequency Counter Accuracy Range Resolution Accuracy, ± (% of Reading + Counts) 199.99 Hz 0.01 Hz 0.005% + 1 1999.9 Hz 0.1 Hz 0.005% + 1 19.999 kHz 0.001 kHz 0.005% + 1 Display updates 3 times /second at >10 H z Frequency Counter Sensitivity Input Range Minimum Sensitivity (rms Sinewave) 5 Hz to 5 kHz * 1 V 0.
ProcessMeter Specifications 41 Diode Test and Continuity Test Diode test indication: display voltage drop: 0.2 m A nominal test c urrent at 0.6V: 2.4V full scale, ac curacy ± (2% + 1 count) Continuity test indication: continuous audible tone for test resis tance <100 Ω Open circuit voltage : <3.
787 Users M anual 42 Vibration: Random 2g, 5 to 500 Hz Shock: 1 meter drop test Water and dust protection: Complies with IEC 529 IP52 (normal operating vacuum used for dust tes t) Safety: Complies with IEC1010-1, ANSI/ISA S82.01- 1994 and CAN/CSA C22.
43 Index —A— Auto Ramping, 17, 26 Ranging, 17 Stepping, 17 —B— Battery Replacement, 30 Buttons, 12 —C— Calibrating the meter, 28 Compensating for tes t lead resistanc e, 19 Composite Signa.
787 Users M anual 44 —F— Flex-Stand, 28 Freezing a reading (TouchHold), 19 Fuse, chec king and replacing, 31 —H— Holster, 28 —I— Inp ut/ Outp ut j acks, 7 —J— Jacks, 7 —K— Knob positions, 9, 11 —L— Loop supply, ex ternal, 22 M— mA output.
Index ( continued ) 45 —R— Range Auto, 17 Locking, 17 Ranges, 17 Relative reading, 19 Rotary sw itch positions , 9, 11 —S— Safety information, 2 Screen, 15 Service and s ales, 1 Settings, 27 Simulating.
787 Users M anual 46.
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 Fluke 787 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 Fluke 787 - in questo modo è possibile verificare se l’apparecchio soddisfa le tue esigenze. Esplorando le pagine segenti del manuali d’uso Fluke 787 imparerai tutte le caratteristiche del prodotto e le informazioni sul suo funzionamento. Le informazioni sul Fluke 787 ti aiuteranno sicuramente a prendere una decisione relativa all’acquisto.
In una situazione in cui hai già il Fluke 787, 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 Fluke 787.
Tuttavia, uno dei ruoli più importanti per l’utente svolti dal manuale d’uso è quello di aiutare a risolvere i problemi con il Fluke 787. Quasi sempre, ci troverai Troubleshooting, cioè i guasti più frequenti e malfunzionamenti del dispositivo Fluke 787 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.
