Honeywell Minimax X4 Gas Detector Calibration Guide

Honeywell PN: 

Honeywell Calibration Gas PN:

Calibration Gas:
25ppm Hydrogen Sulfide
50ppm Carbon Monoxide
50% LEL Methane
20.9% Oxygen
Nitrogen Balance

Honeywell Minimax X4 Gas Calibration Guide by Ideal Calibrations 
1. Verify gas blend and expiration date.
2. Press and hold power, let the unit start up.
3. Press left button twice, press the navigation button to make it say yes, then press the power button.
4. Wait for zero to complete, then press and hold the left button for 5 seconds.