65-2301RKSS Toxic Detector • 13
5.
Unscrew the detector from the controller conduit hub or junction box conduit hub.
6.
Guide the detector leads of the replacement detector through the junction box conduit hub, then
screw the mounting threads of the detector into the hub. If necessary for environmental
conditions, apply thread sealant or Teflon tape to the hub and/or detector threads to seal them.
7.
Connect the detector leads to the terminal block the same way the old detector was wired (see
Figure 4 on page 9). See the controller operator’s manual and the controller’s detector head
specification sheet for the 65-2301RKSS to verify the connections to the controller are correct.
8.
Reinstall the junction box cover.
9.
Turn on or plug in power to the controller.
10. Turn on the controller.
CAUTION:
Allow the replacement detector to warm up for 5 minutes before you continue with the next step.
11. Calibrate the replacement detector as described in “Calibration” on page 14.
Calibration Frequency
Although there is no particular calibration frequency that is correct for all applications, a calibration
frequency of every 3 months is adequate for most toxic detector applications. Unless experience in a
particular application dictates otherwise, RKI Instruments, Inc. recommends a calibration frequency of
every 3 months for the toxic detector.
If an application is not very demanding, for example detection in a clean, temperature controlled
environment where toxic gas is not normally present, and calibration adjustments are minimal at
calibration, then a calibration frequency of every 6 months is adequate.
If an application is very demanding, for example if the environment is not well controlled or if toxic
gas is often present, then more frequent calibration than every 3 months may be necessary.
