RKI Instruments Beacon 200 RIg Monitor, H2S/H2S - Manual (Page 47)

Beacon 200 Rig Monitor Operator’s Manual • 42
Monthly
This procedure describes a test to verify that the H
2
S detectors respond
properly to hydrogen sulfide. It describes a test using a fixed flow regulator
with an on/off knob. RKI Instruments, Inc. recommends using a 0.5 LPM
(liters per minute) fixed flow regulator.
NOTE: Performing a response test on the H
2
S detectors may cause
alarms. Be sure to put the Rig Monitor into its calibration program
or disable external alarms before performing this test.
Preparing for the response test
1. While in normal operation, press and hold the UP/YES button for 5
seconds and press the UP/YES button again when asked if you would
like to enter Calibration Mode.
2. Verify that the Rig Monitor display reading is 0.
3. If the display reading is not zero, set the zero reading of the detector as
described in the Start Up section of this manual, then continue this
procedure.
4. Screw the regulator into the calibration cylinder.
5. Use the calibration kit sample tubing to connect the regulator to the
calibration cup/splash guard of the first detector.
Performing the response test
1. Turn the regulator’s on/off knob counterclockwise to open the
regulator. Gas will begin to flow.
2. Allow the gas to flow for two minutes, then verify that the reading is
within ± 20% of the cylinder gas concentration.
NOTE: If the reading is not within ± 20% of the correct response reading,
calibrate the detector as described in the Calibration section of
this manual.
3. Turn the regulator’s on/off knob clockwise to close the regulator.
4. Detach the sample tubing from the first detector and attach it to the
calibration cup/splash guard of the second detector.
5. Turn the regulator’s on/off knob counterclockwise to open the
regulator. Gas will begin to flow.
6. Allow the gas to flow for 2 minutes, then verify that the reading is within
20% of the cylinder gas concentration.