MSA Chillgard RT - Calibration Procedures

4-5
Calibration Procedures
Before calibrating the Chillgard Monitor, leak-check the sample line(s)
connected to the monitor:
1. Temporarily block the sample inlet at the end-of-line filter(s) and
ve
rify that the monitor gives a trouble alarm.
• If the monitor is a Multipoint Sequencer, the trouble alarm
will not activate until the blocked sampling point is selected by
the Sequencer.
2. After checking for leaks, remove the sampling line for the
C
hillgard inlet.
• On Multipoint Monitors, use sample inlet Point 1.
3. Attach the Calibration Kit connector assembly to the inlet.
4. Before applying gases, familiarize yourself with the calibration
screens by stepping the monitor through the whole sequence.
Press the keys in the following order:
Table 4-2. Calibration Sequence Screens
#
PRESS
RESULT
1
ANY KEY
BRINGS UP MENU
2
CAL
BRINGS UP CAL MENU
3
USER
ALLOWS ADJUSTMENTS
4
ZERO
ALLOWS ZERO CALIBRATION
5
NEXT
PROMPT: ALARMS ARE NOW OFF
6
NEXT
PROMPT: SAMPLE POINT 1 TO BE USED
7
NEXT
PROMPT: APPLY ZERO GAS
8
NEXT
PROMPT: ADJUST OR OK READING
9
OK
PROMPT: REMOVE ZERO GAS
10
SPAN
PROMPT: GO INTO SPAN CALIBRATION
11
NEXT
PROMPT: ALARMS ARE OFF NOW
12
NEXT
PROMPT: SAMPLE POINT 1 TO BE USED
13
NEXT
PROMPT: APPLY SPAN GAS
14
NEXT
PROMPT: ADJUST OR OK READING
15
OK
PROMPT: REMOVE SPAN GAS
16
NEXT
PROMPT: ALARMS ARE NOW ACTIVE
17 NEXT RETURNS TO NORMAL OPERATION
• When this sequence is done with zero and span gases, adjust
the zero and span readings (if necessary) in TABLE 4-2 steps
#9 and #15, respectively.