RKI Instruments GX-3R User Manual

56 • Chapter 5: User Mode and Calibration GX-3R Operator’s Manual
Option A from Flow Chart Option B from Flow Chart
• Calibration passed
• Multiple cylinders assigned
• Calibration passed
• One cylinder assigned
• Auto Start After Successful Cal set to ON (factory setting)
1. The instrument indicates that all channels passed the
calibration.
2. The instrument shows the current gas readings.
3. If MAX SPAN is set to ON (default is OFF, see pg.108), the
response reading’s maximum adjustment is displayed. A
maximum span of 100% LEL on the combustible channel
indicates that the reading could have been adjusted up to
100% LEL. If the maximum span value is close to the
calibration gas value, the sensor should be replaced soon.
The maximum adjustment is either twice the calibration value
or full scale, whichever is lower. The maximum adjustment
indicated for the oxygen channel is 25.0% volume.
4. If the combustible gas sensor is nearing the end of its useful
life, the reading conversions that can be made in Display
Mode’s LIST item become limited. Press and release
POWER MODE. See pg.35 for the limited conversion list.
Replace the combustible sensor as soon as possible.
5. Close the regulator.
6. The instrument continues to the AUTO CAL CYL X screen.
7. Unscrew the regulator from the first cylinder and screw it into
the next cylinder.
8. Press and release POWER MODE to start the next cylinder’s
calibration.
9. Repeat Step 9 through Step 12.
10. After the last cylinder is calibrated, the instrument continues
to the START item in the AUTO CAL menu.
11. Remove the calibration cup.
12. Press and release POWER MODE to enter Measuring Mode.
1. The instrument indicates that all channels passed the
calibration.
2. The instrument shows the current gas readings.
3. If MAX SPAN is set to ON (default is OFF, see pg.108), the
response reading’s maximum adjustment is displayed. A
maximum span of 100% LEL on the combustible channel
indicates that the reading could have been adjusted up to
100% LEL. If the maximum span value is close to the
calibration gas value, the sensor should be replaced soon.
The maximum adjustment is either twice the calibration value
or full scale, whichever is lower. The maximum adjustment
indicated for the oxygen channel is 25.0% volume.
4. If the combustible gas sensor is nearing the end of its useful
life, the reading conversions that can be made in Display
Mode’s LIST item become limited. Press and release
POWER MODE. See pg.35 for the limited conversion list.
Replace the combustible sensor as soon as possible.
5. Close the regulator.
6. Unscrew the regulator.
7. Remove the calibration cup.
8. The instrument automatically begins its warmup sequence
and enters Measuring Mode.
AUTO CAL
M 7:49
PASS
AUTO CAL
M 7:49
50
CO ppm
51 11.9
CH4 %LEL O2 %
MAX SPAN
M 7:49
70
CO ppm
100 25.0
CH4 %LEL O2 %
LIMITED
M 7:49
GAS LIST
HC
AUTO CAL
M 7:49
PASS
AUTO CAL
M 7:49
50 25.2
CO ppm H2S ppm
51 11.9
CH4 %LEL O2 %
MAX SPAN
M 7:49
70 48.5
CO ppm H2S ppm
100 25.0
CH4 %LEL O2 %
LIMITED
M 7:49
GAS LIST
HC

RKI Instruments GX-3R Specifications

General

Brand	RKI Instruments
Model	GX-3R
Category	Measuring Instruments
Language	English