MODEL 3081 pH/ORP
PROGRAM
ISOPOtntAL
EXIT NEXT ENTER
PROGRAM |
|
tCOEFF | 0.000 |
EXIT NEXT ENTER
PROGRAM
I S O |
| 0 | 7.00 |
EXIT | NEXT ENTER | ||
PROGRAM
Snr |
| 0 | 7.00 |
EXIT | NEXT ENTER | ||
SECTION 8.0
PROGRAMMING FOR pH MEASUREMENTS
8.8.3 Procedure
1. Press PROG on the infrared remote controller (IRC).
2. Press NEXT until the ISOPOtntAL
3. The screen displays the tCOEFF prompt. Use the editing keys to change the display to the desired solution temperature coefficient. The allowed values are
4. The screen displays the ISO prompt. The number showing in the display is the oper- ating isopotential pH. The transmitter calculates the operating isopotential pH from the transmitter isopotential pH and the solution temperature coefficient. If the solution temperature coefficient is 0.00, the operating isopotential pH is 7.00. If the solution temperature coefficient is different from 0.00, the operating isopotential pH will be dif- ferent from 7.00. It is ALWAYS better to enter the solution temperature coefficient as described in step 3 and let the transmitter calculate the operating isopotential pH. To move to the next prompt without changing the value, press NEXT .
5. The screen displays the Snr prompt. The flashing display is the current transmitter isopotential point. Use the editing keys to change the transmitter isopotential pH to match the sensor isopotential pH. The limits are pH 0.00 to pH 14.00. The default is pH 7.00. Press ENTER to save.
NOTE
Do NOT change the isopotential pH of the transmitter unless you are thor- oughly familiar with the role of sensor and transmitter isopotential points in pH measurement, OR unless the sensor operating instructions specif- ically state that the isopotential pH is a value other than pH 7.
6. Press EXIT to return to the process display.
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