Calibration

1. Press and hold as the detector performs the OFF countdown. Continue to hold when the detector briefly deactivates.

2. The detector activates again and performs the CAL countdown. Continue to hold until the countdown is complete to enter calibration.

3. flashes while the detector zeroes all of the sensors. If a sensor fails to auto zero, it cannot be spanned. When auto zero is complete, the LCD displays APPLY GAS.

4. Refer to Calibration and Bump Test Installation. Attach the 0.5 l/min. regulator or the demand flow regulator and apply gas

NoteThe diffusion cover must be attached to the detector to calibrate.

flashes on the LCD. After a sufficient amount of gas has been detected (30 seconds), the detector beeps. flashes while the detector completes the span.

5. The LCD displays CAL DUE. Next, a screen displays showing the number of days remaining before calibration is due for each sensor. Last, the LCD displays (e.g.) CAL DUE 180 d. As some sensors require more frequent calibrations, the LCD displays the earliest calibration that must be performed.