Specifications

Next, inject the calibration gas at a flow rate of 30 l/h (See Annex 2).

Wait for the signal to stabilize and adjust the signal with the sensitivity potentiometer (Ref. 2, Fig.

19).

The output signal should be:

EXAMPLE:

Sensor measure (% of full

range)

Output signal (mV)

0 880

50 2640

100 4400

Stop injecting the calibration gas and verify that the reading returns to zero (880 mV). If it does not,

repeat the procedure.

CALIBRATION COMPLETE

Flip the switch (Ref. 1, Fig. 17) into the “MES” position.

1.6. CTX300 CO

calibration

Warning: the sensor should be turned on for 15 minutes before adjustments are made.

The following text describes the steps necessary to adjust the transmitter (first calibration)

Fig. 20

(P 5)

Ref. 1

Ref. 2

Fig. 19

Ref. 3

U = 880 mV + 3520 mV

Sensor measurement range

ISC Devices