RKI Instruments 65-2498RK - Manual (Page 10)

6 • 65-2495RK/65-2498RK 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, 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 (Fresh Air) Reading”.
Setting the Zero (Fresh Air) Reading
CAUTION: If you suspect the presence of H
2
S in the monitoring environment, use the
calibration kit and a zero air calibration cylinder to introduce “fresh air” to the H
2
S
detector and verify an accurate zero setting. See “Calibration” on page 12 for
instructions to introduce zero air to the H
2
S detector.
1. Verify that the H
2
S detector is in a fresh air environment (environment known to be
free of toxic and combustible gases, and of normal oxygen content, 20.9%).
2. Verify a reading of 0 ppm at the controller.
If the display reading is 0 ppm, start up is complete. The H
2
S detector is in normal
operation. If the display reading is not 0 ppm, continue with step 3.
3. Perform a zero (fresh air) adjustment operation at the controller. See the controller
operator’s manual for instructions.