Foxcroft FX-Mini, Руководство по эксплуатации

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Calibration
4. Plug the supplied test connector into the circuit board connector CN2. If you don’t have the
connector, insert to wire leads into the millivolt connector, observe polarity when connecting
your meter.
5. In ambient air, the zero reading should be 40 millivolts.
6. The potentiometer is a multi-turn unit, and there is some signal dampening in the circuit, so the
signal change may not fully stabilize until after you make the adjustment.
7. When setting the zero point do not adjust the span or gain potentiometers. Span calibration
requires a gas standard calibration kit. The gain is factory set and should never be adjusted.
Full Calibration, Toxic Gas Sensors
1. Make sure the zero point is set accurately, if not set the zero point as stated above.
2. Insert the calibration nose completely into the sensing chamber of the gas sensor, making sure
the O-ring is seated properly to isolate the sensor from the atmosphere.
3. Remove the sealing caps from the calibration nose. One port on the calibration nose is used for
gas inlet, the other port must be left open as a vent. Either port can serve as an inlet or vent.
4. Install the Teflon tubing connected to the gas regulator supplied with the calibration kit onto the
calibration nose.