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9.4.
Installation Considerations.
The connections between D-Guard
voltages, power capabilities and input resistances if the detector is to function correctly.
Particular attention should be paid to the minimum and maximum voltage output from any power source since
the ability for the detector to properly signal measured gas concentrations will depend on correctly chosen
power supplies.
9.4.1
Power supplies
If the power supply voltage is too great, there is a risk of damaging the detector. Power supply voltages that are
too low at the detector input terminals may prevent the full 3.3mA – 22mA signalling range being available at
the system controller input.
9.4.2
Typical Connection to a power supply and controller
Power supply
9.4.3
Maintaining Correct Operating Conditions.
When handling the D-Guard
components, since this may compromise its functionality.
Damage caused by mishandling or by connection to incompatible equipment could render inoperative, those
aspects of the detector that product correct operation and safety rely on.
If any damage is evident to any part of the detector electronics or enclosure system, it must not be used.
If such damage is present, advice from Gastech should be sought to remedy the problem before proceeding.
2
and other interconnected equipment must be compatible in terms of
2
during installation, great care must be taken to not damage any part of the system
17
Sensor Controller
2
D-Guard
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