MSA Chillgard RT - Figure 4-3 A. Zero Calibration

4-6
• I
f adjustments are needed, press ADJ to access the UP, DOWN
and ENTER keys; enter the zeroing and spanning adjustments.
4. Zeroing the Monitor:
When zero gas is required, attach a zero gas scrubber or zero gas
cylinder to the connector as shown in FIGURE 4-3.
NOTE: U
se only the zero gas cylinder on monitors calibrated
f
or ammonia.
5. Spanning the Monitor:
When span gas is required, a span gas cylinder must be attached
to the connector as shown in FIGURE 4-4.
Figure 4-3a
. Zero Calibration