Hach-Lange SI794 I User Manual - Manual (Page 89)

89
Diagnostics functions
Display of output currents
Press enter while in measuring mode.
The current at output 1 is shown in the main display,
the current at output 2 in the secondary display.
After 5 sec the transmitter returns to measuring
mode.
Display Remark
Display of calibration data (Cal Info)
Press cal while in measuring mode and confirm code
0000. The current cell factor is shown in the main
display, the zero point underneath. After 20 sec the
transmitter returns to measuring mode (immediate
return at pressing enter).
Sensor monitor for validation
of sensor and complete measured-value processing.
Loop a defined sensing resistor (e.g. R = 100 Ω) through
the sensor as shown in the figure.
Press the conf key and enter code: 2222. The sensor
monitor displays the directly measured resistance and
the temperature.
If there is a significant difference between resistor
value and display, the sensor and its transmission
behavior should be checked.
Press enter to return to measurement.
Caution: The transmitter does not automatically go to
Hold mode.
Display of last error message
(Error Info)
Press conf while in measuring mode and confirm
code 0000. The last error message is displayed for
approx. 20 sec.
After that the message will be deleted (immediate
return to measurement at pressing enter).