PROTÉGÉ ZM
PORTABLE, ZERO-MAINTENANCE, SINGLE-GAS MONITOR
MAINTENANCE
087-0047, Rev. G/December 2019
4-1
4. MAINTENANCE
4.1. Bump Testing / O
2
Calibration
The monitor must be operated and maintained correctly. Sensors can lose sensitivity through nor
-
mal degradation, exposure to high gas concentrations, or sensor poisoning. Calibration and daily
bump testing are essential to ensure the monitor performs as intended.
The frequency of calibration and bump testing is best determined from local regulatory standards,
company policies, and industry best practices. The Company is not responsible for setting policies
or practices.
• Calibration — Adjusts of the monitor’s response to match a known concentration of gas.
• Bump Test — Verifies the calibration by subjecting the monitor to a known concentration of gas.
4.1.1. BUMP TEST USING CALIBRATION ADAPTER
Required Items:
• Calibration gas
• Tygon tubing – 2 feet of 3/16" ID
• Regulator – Set at 0.5 LPM
• Calibration adapter – Shipped with monitor
Perform the following:
1. Verify the concentration of the calibration gas exceeds the monitor’s alarm set-point and the
expiration date of the cylinder has not passed.
2. Attach regulator to the gas cylinder. Verify cylinder pressure.
3. Connect the Tygon tubing to the regulator and calibration adapter.
4. Attach the calibration adapter to the monitor and apply gas (see
).
WARNING: OPERATING A MONITOR THAT HAS EXCEEDED ITS CALIBRATION
DATE CAN CAUSE FALSE GAS READINGS. THESE READINGS MAY BE
INVALID AND COULD LEAD TO DEATH OR INJURY.
NOTE: Ensure the calibration adapter is fitted onto the monitor with the arrow head point
-
Bump Test - Calibration Adapter Attached
).
