SENSITRON
A Halma Company
MTEX4899
SMART S-MS MED
Manuale (IT)
P. 30/36
6. Testing and use
6.1
POWER ON
When the detector is powered on the output current is nearly 2 mA.
After 2 minutes, when the warm-up time has finished, 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 of display board.
6.2 TESTING
Detectors are factory calibrated for the specific gas required by the customers.
Future adjustment of the pre-set calibration can be carried out by employing the
calibration keypad or display when available.
Warning
It’s strictly forbidden open and close the equipment when it’s installed in
hazardous area and it’s powered-on. This operation can be conducted in
safe zone and without power source. After 10 minutes from power source
interruption, the equipment can be opened.
It’s strictly recommended the use of personal protective equipment during
operations inside the enclosure.
Testing / initial checking and calibration should be carried out by using a gas
mixture in the appropriate range, along with our calibration kit.
In order to execute this operation, the user has to ask for the proper test gas
bottle and connect to this the valve with flow meter. Connect a pipe with
adequate diameter, which connects to the calibration adapter for the gas
detector. The calibration of the detector is made by hand-held calibration keypad
or detector display. See paragraph 10 for more details about the accessories for
calibration.
Please consult the specific instruction manuals (display, keypad and field
calibration kit) for further information on use.
6.3 USE
The detector works autonomously and automatically. Once adequately
connected, no further operations are required.
The flashing red LED on the motherboard indicates the detector’s working
condition as detailed in Figure1.
