Calibration Procedures - MSA Chillgard RT Instruction Manual

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
verify 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
Chillgard 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.
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