CMS-4 IN-HELMET CARBON MONOXIDE MONITOR
Page 19
© 2019 CLEMCO INDUSTRIES CORP.
www.clemcoindustries.com
Manual No. 29872
Figure 26
5.6.10
If the bump test failed, a calibration is
immediately and automatically started. Continue to apply
the calibration gas. AUTO CAL will appear at the bottom
of the screen, and a countdown will appear at the top.
5.6.11
Close the connector slide valve by sliding it to
the CLOSE position, toward the test gas cylinder
5.6.12
Remove the calibration cup by gently prying the
retaining clips off the monitor while lifting up on the cup.
Refer to Section 5.5 for additional information on
removing the calibration cup.
5.6.13
Press and release POWER/MODE; the
instrument displays
END
and then changes to
BUMP
.
The monitor is now in User Mode.
5.6.14
If any channel failed the calibration, the LEDs
will flash and the alarm will sound a double-pulsing tone
until POWER/MODE is pressed and released, which
returns the
BUMP
menu (User Mode).
Refer to Section
7.0: Troubleshooting.
5.6.15
Press and release AIR 14 times (14 beeps) to
scroll to
START
.
5.6.16
Press and release POWER/MODE to start the
warm-up sequence and return to Measuring Mode.
5.6.17
The bump test is complete.
5.6.18
Refer to Section 5.8 for additional information on
removing and storing the calibration connector and test gas.
5.7
Calibrating the CMS-4
Calibrate the monitor in a fresh-air environment, as when
used to set the fresh-air baseline.
The following are required to calibrate the CMS-4:
Test gas with 25 ppm concentration of CO, Stock
No. 25573.
Calibration connector with 0.5 LPM fixed-flow slide
valve, tubing, and calibration cup Stock No. 29767,
assembled, as noted in Section 5.3.
5.7.1
Make sure the fresh-air baseline was set per
Section 5.2.
5.7.2
Prepare the calibration-connector regulator
valve and 25 ppm CO test gas, per Section 5.3. Make
sure the slide valve is closed.
5.7.3
With the monitor OFF, press and hold AIR and
POWER MODE. Release both buttons when the monitor
beeps.
BUMP
is displayed on the LCD. The monitor is
now in User Mode.
5.7.4
Press and release AIR once (1 beep) to scroll to
GAS CAL. Press POWER/MODE.
5.7.5
Press and release AIR once (1 beep) to scroll to
A-CAL. (NOTE: If
E-CAL
displays instead of
A-CAL
, the
monitor is in the incorrect mode. Refer to Section 4.4
Maintenance Mode to return to factory default settings.
5.7.6
Press POWER/MODE once (1 beep). The
calibration value (25) displays on the right side of the
screen.
5.7.7
Press POWER MODE again. The gas reading
will start to flash.
5.7.8
Connect the calibration cup to the front of the
monitor over the sensor retainer. (The sensor retainer is
located to the right of the LCD screen.) The calibration
cup’s flow arrow must point up and to the left, as shown
in Figures 21 and 22. Gently press the cup onto the
monitor until it snaps into place. Refer to Section 5.4 for
additional information on connecting the calibration cup
to the monitor.
5.7.9
Open the connector slide valve by sliding it to
the OPEN position (away from the cylinder). Refer to
Figure 21.
5.7.10
Allow gas to flow for one minute.
5.7.11
Press and release POWER MODE once. The
monitor begins calibration.
5.7.12
If the calibration was successful, the LCD will
briefly display
PASS
and the monitor returns to the A-
CAL menu.
5.7.13
If the calibration failed, the LCD will display
FAIL
, the LEDs will flash, and the alarm will sound.
Press and release POWER/MODE to clear the failure.
The monitor returns to the A-CAL menu.
Refer to
Section 7.0: Troubleshooting.
CO
P
ppm
BMP/CAL
