Technical gasses for calibrations and checks of gas detectors
All gas detectors, from the leak detector to the personal detector, from the fixed industrial gas detector to the portable monogas, must be checked and recalibrated periodically. The standard 60079-29-1:2016 tells manufacturers to indicate on the manual the frequency with which to perform the checks and calibrations.
Regarding personal detectors, the various manufacturers have standardized by indicating in the manual two basic tips, with the exceptions of particular cases:
- perform the bump test before each daily use;
- calibrate at least every six months (an exception is for example the calibration frequency of the sensor for HCN, which becomes every 90 days)
The sensors are of the same type, on the various portable devices but also on the majority of fixed devices. For this reason, we believe that common sense leads us to recommend extending this mode to all other gas detectors.
To this end, SIE can supply you with technical gas cylinders at various typical concentrations for specific needs. These cylinders are produced in 4 sizes and are all “disposable” in the sense that once the gas is finished inside, they are not fillable, but will be disposed of in specific ways in metals (aluminum or steel):
- 10-12 normal liters, with male attachment
- 34 normal liters, 58-60 normal litersand 110-116 normal liters, with “female connection”
A constant flow regulator or a demand flow regulator is also required for detectors equipped with an internal electric pump.
The bump test and calibration procedures are specific to each manufacturer but are very similar to each other. They can be performed manually or fully automatically with special automatic stations. We are at your disposal for further information.