RKI Instruments 65-2423RK-05 - Manual (Page 10)

6 • 65-2423RK-05 H
2
S Detector
Start Up
This section describes procedures to start up the H
2
S detector and place the detector into
normal operation.
Introducing Incoming Power
1. Complete the installation procedures described earlier in this manual.
2. Verify that the power wiring to the controller is correct and secure. Refer to the
controller operator’s manual.
3. Turn on or plug in the incoming power at the power source end, then turn on the
controller.
4. Verify that the controller is on and operating properly. Refer to the controller
operator’s manual.
CAUTION: Allow the detector to warm up for 5 minutes before you continue with the next
section, “Setting the Zero Signal”.
Setting the Zero Signal
WARNING: If the detector installation is explosion proof, do not remove the sensor cap
or junction box cover while the circuits are energized unless the area is
determined to be non-hazardous. Keep the sensor cap and junction box
cover tightly closed during operation.
CAUTION: If you suspect the presence of the target gas in the monitoring environment, use the
calibration kit and the zero air calibration cylinder to introduce “fresh air” to the
sensor and verify an accurate zero setting.
1. Verify that the detector is in a fresh air environment (environment known to be free of
hydrogen sulfide, other toxic and combustible gases, and of normal oxygen content,
20.9%).
2. Verify a reading of 0 ppm H
2
S at the controller.
If the display reading is 0 ppm H
2
S, start up is complete. The detector is in normal
operation. If the display reading is not 0 ppm H
2
S, continue with step 3.
3. Perform a zeroing operation at the controller. See the controller operator’s manual for
directions.