Waltron 9072, User Manual

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Waltron User Manual 101-054-A.1
9072 Hydrazine Analyzer
TROUBLESHOOTING
7
TROUBLESHOOTING

If the values of the flow measurements seem incorrect, a calibration of the flow meter
should be performed. The procedure has to be as follows:
1.
Adjust the flow to approximately 10 l/h and have available a 250 ml graduated
cylinder.
2. Choose the FlowCal > level and press the key and follow the displayed
instructions.
3. If the countdown runs beginning at 60 sec collect the flow during the 60 second
period in the graduated cylinder. When the countdown is completed, stop
collecting the flow.
4. The amount (in ml) of sample, collected in the cylinder during the 60 seconds,
should be entered digit by digit with the keys
, , and . If the value is
correct, press key SET. Press key ESC to go back to the measuring mode.

If you observe unsteady or unlikely results during the measurements, check if the
plug connectors are dry and make sure that the reference electrode is completely
immersed into the KCl-solution.

During longer periods, where no measurement a takes place, (for example longer than
3 weeks) it is advisable to clean the analyzer. There should not remain any probe
material or KCl solution within the analyzer. In case of shorter breaks, parts can stay
in wet surrounding. It will reduce the start up time and the time until steady state
condition.