Safety Information

Before taking the monitor into the field, you should be aware of some of the safety guidelines. Using this detector in ways that are not recommended by this guide may result in the impaired functioning and detection capabilities of the GasAlertQuattro.

External Considerations

Please refer to the section in this manual entitled Sensor Poisons and Contaminants because it could help you avoid damaging sensors. Some of the external chemicals that can threaten the performance of the sensor include:

• Lead compounds
• Silicones
• Chlorinated Hydrocarbons

Also, temperature may be a variable. If the sensor will be operated in an environment that is close to its upper or lower operating temperature threshold, it should be calibrated (zeroed) to this environment.

Power Concerns

The detector should be fully charged before operating it for the first time. Avoid Using an external power source for periods longer than twenty-four hours at any given time. Power cycling helps keep the detector up and running. This is done by turning the monitor off and then back on using the pushbutton. The charger provided (GA-PA-1-NA) is not designed to be used in environments that may present the danger of explosion or other hazards.

Calibration

The GasAlertQuattro comes calibrated but users should follow the preset calibration interval of 180 days. One concern with calibration is the LEL sensor default is set to methane. This option can be changed if necessary if you know that you will be measuring a different combustible gas like propane. If any exposure to damaging compounds takes place (mentioned earlier), the sensor should be re-calibrated.

Other General Tips

To ensure proper functioning of the unit, these following recommendations should be followed:

• The sensor should be bump tested before each use.
• Always use reliable AA batteries for the alkaline version or the official battery pack for the rechargeable version.
  
• High-scale LEL readings may indicate a sudden spike in the amount of hazardous gases and should be taken seriously.
• Atmospheres with less than 10% oxygen will cause inaccurate LEL readings and other potentially inaccurate readings.

Additionally, there are instances when exposure to specific combustible gases may cause the sensor’s performance to be affected. This can require the sensor to be re-calibrated. If the monitor fails to calibrate after exposure like this, the combustible sensor may need to be replaced. To be sure, wait about 5-10 minutes before attempting to calibrate it and try twice if it fails the first time.