Metrohm 784 KFP Titrino - Manual (Page 107)

4.2 Diagnosis
784 KFP Titrino
104
6 Measuring input test: Polarizer test
With the aid of the "767.0010 calibrated reference for mV, pH, Ω, µS, °C" you can check the measuring input
"Pol".
If a Remote Box is connected:
Deactivate the Remote Box (key <Config>, >peripheral units, Remote Box: off"). Switch the Titrino off and
screw off the Remote Box. Switch the Titrino on again (so that the new configuration will be recognized).
• Press <7>.
polarizer test
• Press <ENTER>.
dummy resistor 14.3 kΩ Ω
• Screw off electrode cable (6.2104.020) and insert in socket 5 of the 767 (the cover remains
closed on the 767) or connect resistor switch box (14.3 k
Ω ) using 3.496.5070 cable to ‘Pol’
socket.
• Press <ENTER>.
Test sequence:
1. An asterisk flashes during the test.
2. In case of an error an error message appears. (If for example the switch-box is not
connected, error 100 appears).
3. If no error is found, after about 15 s display shows
polarizer test o.k.
• • Press <CLEAR>.
diagnose press key 0...9
• Remove 767 or cable and resistor switch-box.