Hach-Lange SI792 C, SI792x C, SI792x C-FF, SI792x C-PA User Manual - Manual (Page 69)

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Section 8 Calibration
8.1 Calibration
Important Note: Stabilize the temperature during calibration.
Note: Only qualified personnel should conduct the tasks described in
this section of the manual.
The transmitter is adjusted to the sensor through the calibration. Use
the following methods and passcodes for calibration as described in
Table 14 .
During calibration the transmitter remains in the Hold mode for safety
reasons. The loop current is frozen at the value specified in the
o1.HoLD menu option. The Sensoface icon is inactive. The calibration
mode indicator is displayed (
Figure 10 on page 31 ).
To exit the calibration mode at any time, press CAL and then ENTER .
The output current will be held for 20 seconds and the measured value
will be displayed.
Table 14 Methods and passcodes for calibration
Method Passcode
Display zero/slope 0000
Enter cell constant 1100 1
1 For si792(x) C only.
Calibration with a known calibration solution 0110 2
2 Not available with si792x C-PA.
Calibration by product comparison/grab sample 1105 2
Temperature sensor calibration 1015