SENSITRON
A Halma Company
MT4962
SMART S
Quick Guide (EN)
P. 11/12
Testing and use
POWER ON
When the detector is powered on, the green LED on the motherboard starts
blinking at slow intermittent. Output current is nearly 2 mA.
After 2 minutes and finished the warmup step, the output current is 4.0mA.
Once the warm-up phase is over, the detector can work correctly, although the
optimal performances will be achieved after two hours.
Should the detector be provided with display, please refer to the additional
technical handbook MT3771.
TESTING
Detectors are factory calibrated for the specific gas required by the customers.
Future adjustment of the preset calibration can be carried out by employing the
calibration keypad.
Testing should be carried out by using a gas mixture in the appropriate range,
along with our calibration kit.
USE
The detector works autonomously and automatically. Once adequately
connected, no further operations are required.
The flashing green LED on the motherboard indicates the detector’s working
condition as detailed in the main manual.
MAINTENANCE
Within the European Union Countries, bump testing and calibration procedures
of gas detectors are required by strict regulations and detailed in the IEC EN
60079-29-2. This norm gives guidance on the selection, installation, use and
maintenance of gas detectors intended for use in industrial and commercial
applications.
The standard requires calibration and bump testing as well as recording of
the performed checks and it defines that all gas detectors should undergo
periodical operational testing according to the manufacturer’s specifications.
Test results should be recorded into a suitable book to be shown to the Authority
in case of inspection.
