Transcript
For calibration, on a MicroClip XT and most of the MicroClip, Max XTs and Quattro family you are going start with a unit in a regular operating mode. Turn the unit off, holding it past its off countdown and into the calibration countdown.
Now it is going to auto-zero its sensors. You will want to make sure that your gas is set up and ready to go for when it says "apply gas" your not scrambling with hoses. Snap the test cap on and open the regulator all the way. So the unit is pretty intuitive: with the little icons, the detector is going to tell you what it needs next, when to apply the gas, and when to remove the gas. It's going to do this for about one minute.
The calibration is pretty important: it re-establishes a base line for your sensors so the electrochemical and the LEL catalytic bead sensor need some kind of base line. That way it knows what a concentration of gas is. What it's looking for. So you want to make sure that you do your calibration fairly frequently, every 180 days is the manufacturer's default. You can do it more frequently than that that if you want, and you just want to make sure that you know your sensors are responding the way the should. They drift over time, and can be poisoned by over-exposure or a non compatible gas. The calibration will resolve a lot of those issues just by reminding the unit what it should be seeing.

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