Manuale d’uso / di manutenzione del prodotto LXT-230 del fabbricante Teledyne
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Model LXT-230 Transmitter Installation and Operating Manual for pH and ORP Teledyne Analytical Instruments 16830 Chestnut Street • City of I ndustry, CA 91748 888 -789-8168 • ask_tai@tele dyne.
Model LXT-230 Instruction Manu al / 2 TABLE OF CONTENTS UNPACKING THE INSTRUMENT ....... ...... ....... ...... ...... ....... ...... ....... ...... ...... ....... ...... ....... 4 1.0 GENER AL DESCRIPTION ....... ...... ....... ...... ...... ....... .
Model LXT-230 Instruction Manu al / 3 6.6 Calibrati on Error Dete ction & Electro de Operational Guidelines ....... ...... ....... ...... .... 15 6.7 Back-to-Factory Calibration ..... ...... ....... ...... ....... ...... ...... ....... ...... ....
Model LXT-230 Instruction Manu al / 4 UNPACKING THE INSTRUMENT Your Teledyne inst rument has been care fully packaged to protect it from damage during shipment an d dry storage.
Model LXT-230 Instruction Manu al / 5 Fahrenheit. A toggle function in the Temperature Calibration Menu allows this selection to be performed in the field. 1.7 PID Outpu t (Optional) An optional PID output is available and provides a 4-20 mA, three-mode control signal to a transducer or a final control element.
Model LXT-230 Instruction Manu al / 6 2.0 INSTALLATIO N 2.1 Mounting Three typical inst allation configurations ar e avail able for the LXT-230 transmitte r: universal mounting, han drail mounting, and panel mounting configurations. The universal mounting configuration allows the LXT-230 to be mounted on a wall or a 2” pipe stand.
Model LXT-230 Instruction Manu al / 7 3.0 FAMILIARIZATION This se ction will pro vide an overview of the front panel key functions and the disp lay menu s for a single channel pH and ORP transmitter. Multiple channel transmitters will have the same menus.
Model LXT-230 Instruction Manu al / 8 3.2.2 Main Menu This menu appears after the Copyright Display when power is first applied to the LXT-230. The Main Menu di splays the measured process variable, temperature, and the current output in pe rcent of f ull- scale.
Model LXT-230 Instruction Manu al / 9 The t op line displays the buffer, or calibr ation point , at which the last calibrat ion was performed. For pH transmitters, the bottom line displays the electro de slope, or efficiency, in millivolts per pH (mV/pH).
Model LXT-230 Instruction Manu al / 10 4.0 SENTINEL DIAGNOSTICS The basic menu structure of the LXT-230 transmitter is architecturally the same as the LXT- 230 pH , ORP and PION, with the only va riable being the diagnostic information on the main and special diagnostic menus.
Model LXT-230 Instruction Manu al / 11 To file the input, with the microprocessor, exit the calibrate mode by pressing either menu selection key. The u pper half of the split screen menu displays absolute reference potential (±2 millivolts) directly from the electrode vi a the diagnostic signal co conditione r located in the sensor.
Model LXT-230 Instruction Manu al / 12 5.0 MAINTENANCE If service of the internal components is required, always turn off the power to the instrument. 5.1 Clean ing Cleaning the front panel can be performed with a detergent and water. DO NOT USE ACETONE, ACID OR CAUSTIC SOLUTIO NS ON THE ENCLOSURE SURFACE.
Model LXT-230 Instruction Manu al / 13 6.0 CALIBRATION 6.1 Manual Output Mode To perform calibrations with out interferi ng with control or recorder functions, the LXT-230 incorporates a manual output mode. The current output is set to the desired level and saved until ch anged or released fro m the manual mode.
Model LXT-230 Instruction Manu al / 14 2 pH 4.00 -58.2 mV/pH 2 ORP 180 .0 mV .980 mV/ORP Procedure: 1. Press the appropriate MENU SELECTION key to reach the Electrode Standardization Menu and locate the cursor under the "1" as illustrated in section 3.
Model LXT-230 Instruction Manu al / 15 diagnostic tool in determining the degrada tion of the ele ctro de. Large differences between calibrations m ay indicate coating or damage to the measurement half-cell.
Model LXT-230 Instruction Manu al / 16 Procedure: 1. Press the appropriate MENU SELECTION key to reach the Output Calibration Menu. 2. Position the cu rsor on the top line to change the 4 mA point or the bottom line to change the 20 mA point. 3. Press both horizontal C ALIBRATE keys simultaneously to enter the calibrate mode.
Model LXT-230 Instruction Manu al / 17 4. To toggle back to the first unit of measurement, press the CALIBRATE keys again. Trim °C .0 Unit 25.0°C Trim °F .
Model LXT-230 Instruction Manu al / 18 7.0 LXT-230 MODEL NUMBER DESIGNATORS Channel 1 Input & Output LXT-230- PH/MA pH LXT-230- OR/MA ORP LXT-230- PION/MA Specific Ion (see n ote 1) Note 1: F or PION, the model number will reflect the ion being measured; for example, Ca f or calcium, Fl for fluoride, et c .
Model LXT-230 Instruction Manu al / 19 8.0 TROUBLESHOOTING GUIDE Symptom Possible Causes Suggested Acti ons No power to the instrument. Check power supply to be sure the correct voltage is being su pplied to the transmitter. (13.5 to 50 VDC) Check polarity of transmitter wiring.
Model LXT-230 Instruction Manu al / 20 Electrode Span Menu, then perform a buffer calibration. Check the sensor and electrode for proper operation. Wrong temperature correction has been calibrated in the temperature trim. Examine the temperature and the Temperature Calibration Menu.
Model LXT-230 Instruction Manu al / 21 APPENDIX A - SPECIFICATIONS MEASUREMENT RANGE pH: 0.00 to 14.00, fully expandable and reversible, standard. -2.00 to 14.00 pH , op tional. ORP: +1000 to -1000 mV, fully expandable and reversible, standard. OUTPUT 4-20 mA or 20-4 mA, linear and expan dable.
Model LXT-230 Instruction Manu al / 22 Temperature Trim Allows for compensation for any differen ces in RTDs b y progr amming the offset into the transmitter.
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 Teledyne LXT-230 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 Teledyne LXT-230 - in questo modo è possibile verificare se l’apparecchio soddisfa le tue esigenze. Esplorando le pagine segenti del manuali d’uso Teledyne LXT-230 imparerai tutte le caratteristiche del prodotto e le informazioni sul suo funzionamento. Le informazioni sul Teledyne LXT-230 ti aiuteranno sicuramente a prendere una decisione relativa all’acquisto.
In una situazione in cui hai già il Teledyne LXT-230, 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 Teledyne LXT-230.
Tuttavia, uno dei ruoli più importanti per l’utente svolti dal manuale d’uso è quello di aiutare a risolvere i problemi con il Teledyne LXT-230. Quasi sempre, ci troverai Troubleshooting, cioè i guasti più frequenti e malfunzionamenti del dispositivo Teledyne LXT-230 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.
