IK-E363-001
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Figure 2 The interior of the PSG-6100 detector.
5.
FUNCTIONAL DESCRIPTION.
Detectors in their principle of operation use the phenomenon of gas diffusion in the environment. The
ventilation element allows gas to enter the detector and reach the sensor. The microprocessor
measurement system continuously analyses the concentration of the measured gas and compares it
with the value of the appropriate alarm threshold. In the case of alarm thresholds expressed in
instantaneous values, a false alarm filter (shorter than 15s) has been added. The measuring system
also performs temperature compensation allowing the use of detectors in a wider temperature range.
After connecting the power supply, the detector is in the sensor's 60 second warming state during
which the sensor pre-conditioning is conducted. Semiconductor sensors achieve full measurement
efficiency after at least 48 hours of uninterrupted power supply.
The built-in short circuit isolator allows detection of faults and damage to the installation. In the case
of using a loop line, damage to the line in one place does not disconnect the detectors from the central
unit.
The detector's alarm condition is signalled by a pulsed, red LED light. The indicator enables quick
detection of the alarming detector and is helpful in periodically checking the detector's operation. The
detector fault condition is indicated by a pulsed, yellow LED light. The green POWER LED indicates the
operation of the detector. In detectors PSG-6100 it flashes signalling the correct operation of the
detector. In the PSG-6000 detectors, the POWER diode is connected to the sensory module, signalling
the correct voltage supply to the sensor module, in addition, short flashes of this diode signal the state
of heating of the sensor. Short stops in lighting signal detection of a small amount of gas detected,
which may be helpful during periodic inspection.
detection line terminals
sensor module
magnetic field sensor location
