Specifications

IEQ Chek  Operation Manual
1509-9001 Rev 1 23
All IEQ Chek gas sensors are plug-and-play smart sensors. They can be added or
changed at any time. The procedure to add or change a sensor is as follows.
Figure 7-1. Transmitter Circuit Board With Four Sensors Installed
NOTE: If the newly installed sensor is not zero adjusted after installation, the display
may indicate a slight reading of the target gas even in a clean environment.
NOTE: For best accuracy, all sensors should be zero adjusted and bump tested
after being installed.
Step Procedure to Add/Change a Sensor
1.
Shut off the instrument. REMOVE THE BATTERIES. If the power adapter
is plugged in, UNPLUG IT BEFORE PROCEEDING.
IMPORTANT: Leaving in the batteries or leaving the AC adapter
plugged in while changing sensors can seriously damage
sensors. This damage will not be covered under
warranty.
2.
Loosen the single securing screw in the center of the sensor cover on the
top of the instrument. Carefully remove the cover.
3.
If you are removing a sensor, identify the one to be removed by the label
on the side of the sensor then carefully grasp the sensor by the sides and
pull upwards with a slight rocking motion to unplug it from the sensor
sockets in the transmitter circuit board. DO NOT DROP the sensor
(permanent damage could occur). The removed sensor should be stored
in a clean, dry container, preferably with anti-static foam.
FRONT OF INSTRUMENT
FRONT OF INSTRUMENT