Black & Decker MULTI-GAS DETECTORS Manuel d'utilisateur télécharger pdf (Page 35)

BW Defender2

User Manual

Calibration and Setting Alarm Setpoints

Guidelines

Caution

The detector must be calibrated using the

following gas concentrations: H

S =

= 25 ppm,

CO =

= 100 ppm, Methane =

= 2.5 %

% (50 %

% LEL), and

balance air.

If you do not calibrate all of the sensors, use the

gas concentration listed above for the target

sensor being calibrated.

When calibrating the detector, adhere to the following

guidelines.

• CG-Q58 Calibration Gas (four-gas mix) is available from

BW Technologies. (See the section "Replacement Parts

and Accessories.")

• Calibration accuracy is never better than the calibration

gas accuracy. BW Technologies recommends a

premium-grade calibration gas. Gases with NIST

(National Institute of Standards and Technology)

traceable accuracy will improve the validity of the

calibration. Do not use a gas cylinder beyond its

expiration date.

• Calibrate a new sensor before use. Allow the sensor to

stabilize before starting calibration (used: 60 seconds;

new: 5 minutes).

• Calibrate the detector once every one to three months,

depending on use and sensor exposure to poisons and

contaminants.

• Calibrate the detector if the ambient gas display varies at

start-up.

• It is best to calibrate the sensor before changing alarm

setpoints.

• Calibrate only in a clean atmosphere, which is free of

background gas.

• To disable an alarm, set its alarm setpoint to 0.

• The LEL sensor is factory calibrated to methane. If

monitoring a different combustible gas, calibrate the

sensor using the appropriate gas.

• The O

sensor is automatically calibrated on activation.

Activate detector in a normal 20.9% O

atmosphere.

• If you require a certified calibration, contact BW

Technologies using one of the numbers on page 2.

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Black & Decker MULTI-GAS DETECTORS Manuel d'utilisateur Page 35

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Produits connexes et manuels pour Détecteurs de monoxyde de carbone (CO) Black & Decker MULTI-GAS DETECTORS