14
•
Calibration Frequency
61-1020/61-0230 Molecular Property Spectrometer
8. If the detector is installed remotely from a controller in a junction box, connect the detector
leads to the terminal block the same way the old detector was wired (see Figure 3). See the
controller operator’s manual and the controller’s detector head specification sheet for the 61-
1020 detector to verify the connections to the controller are correct.
If the detector is installed directly on a controller, connect the detector leads to the
appropriate detector terminal strip terminals. See Figure 3 for wiring to a generic
controller. See the controller operator’s manual and the controller’s detector head
specification sheet for the 61-0230 detector for wiring specific to your controller.
9. For remote installations, reinstall the junction box cover.
For detectors connected directly on a controller, close the controller door.
10. Turn on power to the controller.
11. Turn on the controller.
12. Calibrate the replacement detector as described in“Calibration” on page 15.
Calibration Frequency
Although there is no particular calibration frequency that is correct for all applications, a
calibration frequency of every 6 months is adequate for most MPS combustible gas transmitter
applications. Unless experience in a particular application dictates otherwise, RKI Instruments,
Inc. recommends a calibration frequency of every 6 months.
If an application is not very demanding, for example detection in a clean, temperature controlled
environment where calibration adjustments are minimal at calibration, then a calibration
frequency of every 9 to 12 months is adequate.
If an application is very demanding, for example if the environment is not well-controlled, then
more frequent calibration than every 6 months may be necessary.
