User Manual

17
42t - 420 loop test, 25 seconds
gtS - Gas Test, 3 minutes (no output to the panel during the gas test)
The display will flash during the test or in the case of the gas test the level will alternate with the expected gas (mE, Pro or Hy). Once
the test is complete, the display will return to steady display. To exit the test menu, press the Next button until “End” is displayed, then
press Enter to return to normal mode.
Combustible Gas Gas Test
The following steps must be performed when conducting a calibration or calibration verification test (bump test) to ensure proper
performance of the monitor. Failure to do so may adversely affect product performance and result in sickness or death.
 When performing a calibration or calibration verification test (bump test) only use certified calibration gas at the
required concentration level. Do not calibrate with expired calibration gas.
 If the instrument cannot be calibrated, do not use until the reason can be determined and corrected.
 Do not cover or obstruct display or visual alarm cover.
 Ensure sensor inlets are unobstructed and is free of debris
General
The GD-12 can be bump-tested or calibrated with the GD-12 Field Calibration Kit using Methane, Propane or Hydrogen gas, regulator
and test hood, available through your local representative or from Macurco.
Contents of the FCK
 GDM-FCK: Two Gas Cylinders, 10% LEL Methane gas in air, 20% LEL Methane in air, Gas regulator with two feet of plastic
tubing, Humidifier and Gas test hood
 GDP-FCK: Two Gas Cylinders, 10% LEL Propane gas in air, 20% LEL Propane in air, Gas regulator with two feet of plastic
tubing, Humidifier and Gas test hood
 GDH-FCK: Two Gas Cylinders, 10% LEL Hydrogen gas in air, 20% LEL Hydrogen in air, Gas regulator with two feet of plastic
tubing, Humidifier and Gas test hood
! WARNING