3M™ PROTÉGÉ SG
PORTABLE, REUSABLE, SINGLE-GAS MONITOR
MAINTENANCE
087-0065, Rev D/February 2019
6-3
7. After an unsuccessful calibration, the monitor will beep and flash and continues to display FAIL.
Verify the device activates 1 red LED flash every 2 seconds, 1 sounding beep every 2 seconds and
1 vibration every 2 seconds.
6.1.2. CONNECTING THE GAS CYLINDER TO MONITOR
Required Items:
• Calibration gas – Verify concentration level exceeds set points of monitor and expiration date of
cylinder has not passed
• Tygon tubing – 2 feet of 3/16" ID
• Regulator – Set to provide flow at 0.5LPM
• Calibration Adapter – Shipped with monitor
Perform the following steps to install the calibration kit prior to initiating calibration.
Only use the 3M-approved gas to calibrate the monitor
.
1. Verify the concentration level of the target gas in the cylinder exceeds alarm settings of the mon-
itor (refer to
if needed).
2. Attach the Regulator to the gas cylinder and verify cylinder pressure.
3. Connect the tubing to both the 0.5LPM regulator on the gas cylinder and the calibration adapter
SPAN Calibration - Calibration Adapter Attached
).
4. Refer to
Section 6.1.3. SPAN CALIBRATION
and
Section 6.1.1. ZERO CALIBRATION
procedures. Do not attach the adapter to the monitor until instructed applying gas.
Figure 6-2: SPAN Calibration - Calibration Adapter Attached
CAUTION: Gas must be applied at a flow rate of 0.5LPM to perform Span Calibration.
Failure to apply gas at the proper flow rate results in failed or inaccurate
calibration.
NOTE: Ensure the Calibration gas has not pasted its expiration date.
