MODEL 3081 pH/ORP
PROGRAM
bUFFEr
EXIT NEXT ENTER
PROGRAM
bAUtO | On |
|
EXIT | ENTER | |
SECTION 8.0
PROGRAMMING FOR pH MEASUREMENTS
TABLE
|
| Merck |
| Ingold |
| DIN 19267 |
| |||
| pH |
| temp (°C) | pH |
| temp (°C) | pH | temp (°C) |
| |
|
|
|
|
|
|
|
| 1.09 | 0 - 90 |
|
| 2.00 |
| 0 - 95 | 2.00 |
| 0 | - 95 |
|
|
|
|
|
|
|
|
|
|
| 3.06 | 0 - 90 |
|
|
|
|
| 4.01 |
| 0 | - 95 |
|
|
|
|
|
|
|
|
|
|
| 4.65 | 0 - 90 |
|
|
|
|
|
|
|
|
| 6.79 | 0 - 90 |
|
| 7.00 |
| 0 - 95 | 7.00 |
| 0 | - 95 |
|
|
|
| 9.00 |
| 0 - 95 |
|
|
|
|
|
|
|
|
|
|
| 9.21 |
| 0 | - 95 | 9.23 | 0 - 90 |
|
| 12.00 |
| 0 - 95 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| 12.75 | 0 - 90 |
|
3.STABILITY CRITERIA. For the Model 3081 pH/ORP transmitter to accept calibration data, the pH must remain within a specified range for a specified period of time. The default values are 0.02 pH units and 10 seconds. In other words, at the default setting, calibration data will be accepted as soon as the pH reading is constant to within 0.02 units for 10 seconds. The minimum range is 0.01, and the maximum time is 30 seconds.
8.7.3 Procedure
1.Press PROG on the infrared remote controller (IRC).
2.Press NEXT until the bUFFEr
3.The screen displays the bAUTO prompt. Press Ï or Ð to activate (On) or
PROGRAM
bUFFEr
EXIT
Std
ENTER
4. The screen displays the bUFFEr prompt. Press Ï or Ð to select the desired buffer or buffers. The buffer values available under each designation are given in Table
TABLE
PROGRAM
t I M E | 1 | 0 |
EXIT |
| ENTER |
|
|
|
|
|
|
PROGRAM |
|
|
pH |
| 0.02 |
0 | ||
EXIT |
| ENTER |
|
|
|
Std NIST, DIN 19266, JIS 8802, and BSM standard buffers ErC Merck Buffers (technical buffers)
InG Ingold Buffers (technical buffers) din DIN 19267 (technical buffers)
5.The screen changes to display the tIME prompt. Use the editing keys to change the flashing number to the time in seconds the reading must remain stable for calibration data to be accepted. The maximum is 30 seconds. Press ENTER to save.
6.The screen changes to display the pH prompt. Use the editing keys to change the flashing display to the pH range the reading must remain in for calibration data to be accepted. The minimum range is 0.01. Press ENTER to save.
7.Press EXIT twice to return to the process display.
68
