350 User Manual | Biosystems Bts

While the unit can be configured differently based on the order, the vast majority of BTS 350 units are "4-Gas" monitors, detecting:

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If the unit is reading anything other than 0 for toxics or 20.9 for O2, but you are in a known fresh air environment, you may need to perform a "Zero" or "Fresh Air Adjustment." (See the Calibration section below for details). While the unit can be configured differently based

If your unit has a pump:

Pro-Tip: If using the pump, wait 3 to 5 seconds after clearing the wand from the gas source to allow the sample tubing to clear. Readings lag slightly behind real-time air due to travel time. If your unit has a pump: