Model CXT-IR
CXT-IR Instruction Manual
Rev. 2.1
Page 39 of 48
CAUTION
Warning – Explosion Hazard – Batteries must only be changed in an area free of
ignitable concentrations.
CAUTION
Warning – Explosion Hazard – Batteries must only be recharged in an area free of
ignitable concentrations.
5.2
Replacement of Plug-in Sensor
NOTE: It is not necessary to remove power while changing the plug-in combustible gas
sensor in order to maintain area classification, since it is intrinsically safe.
NOTE:
Only replace the plug-in sensor with an authorized CXT-IR family of gas sensors.
Figure 21 Sensor Cell and ITM Mating
1.
Use a
1
/
16
" Allen wrench to release the locking setscrew that locks the ITM and splashguard adapter
assembly together (One turn only - Do not remove setscrew completely).
2.
Remove the splashguard.
3.
Unthread and remove the splashguard adapter assembly from the ITM.
4.
Gently pull the plug-in sensor out of the ITM. Verify the gas type and range of the new sensor cell is
correct.
5.
Orient the new plug-in sensor so that it matches with the female connector pins. When properly aligned,
press the sensor in firmly to make the proper connection.
6.
Thread the splashguard adapter assembly onto the ITM to a snug fit and tighten the locking setscrew
using the
1
/
16
" Allen wrench.
7.
Install the splashguard.
8.
Check and perform zero calibration and span calibration as per Section 3.3.
ITM
(Bottom View)
Display
Window
Plug in Sensor
(Bottom view)
Locking
Setscrew
Locking
Setscrew
detcon inc
.
MODEL
CXT-IR
