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calibration, it will be held at the lockout value

for an additional two minutes.

c. If a CAL FAULT flag appears on the unit (FIGURE 3-11),

this indicates:

• An unsuccessful attempt to zero or calibrate the

Toxgard II Gas Monitor

• The Toxgard II Gas Monitor is operating with the

calibration parameters defined before the calibration

was attempted.

To extinguish the CAL FAULT flag, a complete calibration

procedure must be performed.

• See Troubleshooting Guidelines found in Chapter 5.

The Toxgard II Gas Monitor allows automatic zero adjustment

only within a pre-defined range. It cannot make any

corrections outside this range, such as when an empty or

wrong cylinder of gas is applied or failure to begin gas

flow within the allotted 30-second countdown occurs.

Figure 3-10.

Calibration End Display

Figure 3-11.

Calibration Fault Flag

Chapter 3, Calibration

3-11

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MSA Toxgard II Specifications

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