65-2330RKSS H
2
S Transmitter • 19
9. Install the detector and controller terminals strips into their sockets on the new amplifier
as shown in Figure 5. If controller leads or detector leads were removed during this
procedure, refer to Figure 5 for the detector and amplifier connections.
NOTE:
When a transmitter is first powered up with a new amplifier, the initial output may be
either high or below zero depending on the setting of the zero pot. Be sure to make
arrangements so that this does not cause unwanted alarms.
10. Turn on or plug in power to the controller.
11. Turn on the controller and place it into normal operation.
12. Allow the transmitter to warm up for 5 minutes.
13. Calibrate the H
2
S transmitter as described in “Calibration” on page 20.
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 H
2
S transmitter applications.
Unless experience in a particular application dictates otherwise, RKI Instruments, Inc.
recommends a calibration frequency of every 3 months for the H
2
S transmitter.
If an application is not very demanding, for example detection in a clean, temperature
controlled environment, and calibration adjustments are minimal at calibration, then a
calibration frequency of every 6 months is adequate.
If the application is very demanding, for example if the environment is not well controlled,
then more frequent calibration than every 3 months may be necessary.
