Simulation Functions - Mettler Toledo InPro 6800 Bedienungsanleitung

Accessories O
2
3.2.2

Simulation functions

Please refer to the transmitter instruction manual for the exact de-
scription of the transmitter operation.
Test the transmitter as follow:
1. Calibrate the transmitter:
If your sensors are calibrated using a one point calibration
(which is recommended), then you should simulate a sensor in
air (InPro 6800 or InPro 6900) by pushing the switch to the left
for an InPro 6900 or to the right for an InPro 6800 and start a
calibration routine on the transmitter.
If your sensors are calibrated using a 2 point calibration, start
with the 0-point calibration: simulate a measurement in nitrogen
by setting the switch to the middle position and calibrate the 0-
point. Then, perform the air calibration as described above.
2. Exit the calibration routine and go in measurement mode.
3. Test the transmitter:
– Check the temperature reading:
you should read 25°C (77°F).
– Simulate a measurement in air by pushing the switch to the left
or to the right depending on your type of sensor. The readings
on the transmitter should correspond to readings in the air
(100% air saturation or 21% oxygen or app. 8.3ppm, etc...).
If you have access to the direct current, the transmitter should
give you for an InPro 6800 a current of 67±3nA by a polar-
ization voltage of –675mV and a current of 50±3nA by a po-
larization voltage of –500mV and for an InPro 6900 a current
of 400±5nA by a polarization voltage of –675mV and a cur-
rent of 297±5nA by a polarization voltage of –500mV.
– Simulate a measurement in nitrogen: within 10 seconds, the
reading should drop down to 0.
© 03/14 Mettler-Toledo AG, Greifensee
Printed in Switzerland
sensors
InPro 6800/6900/6950
52 200 952
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