Black & Decker MULTI-GAS DETECTORS Manuel d'utilisateur télécharger pdf (Page 37)

BW Defender2

User Manual

Calibration Procedure

To calibrate the detector and set its alarm setpoints, perform

the following procedure.

Start Calibration

To quit at any point after auto zero, press . The detector

retains any saved values, and the audible alarm beeps four

times before the detector returns to normal operation.

1. Press A and simultaneously.

The display shows:

The audible alarm beeps once.

Auto Zero and Oxygen Sensor Calibration

The display flashes “auto zero” while the detector

automatically zeroes the H

S, CO and LEL sensors and

calibrates the oxygen sensor.

The audible alarm then beeps twice.

Auto Zero Sensor Fail

Note

Do not apply the calibration gas until the display shows a

flashing gas cylinder; otherwise, the auto zero step will

fail.

If a sensor fails, the display advises error (Err) and skips

the span for the failed sensor(s). Other sensors span

normally. Press to exit. Then restart calibration in an

atmosphere that is clear of the targeted gases. If the

auto zero fails a second time, restart the detector to test

the sensors.

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Black & Decker MULTI-GAS DETECTORS Manuel d'utilisateur Page 37