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Each gas has different nature depending on their density. The density of which is lower than
air, such as hydrogen, methane or ammonia the sensor head must be located above a possible
leak or at the highest points at which major concentrations of gas may be found. The gases
and vapours with a density greater than air, the sensor head must be installed beneath a
possible leak or at the lowest points at which such gases and vapours may be present.
Prosense may provide cable gland together with detector in regards to customer requests.
The cable gland provided by Prosense has ATEX certification and provides at least IP65 level
protection. The cable glands are only suitable for fixed installations. Cables shall be effectively
clamped to prevent pulling or twisting. To provide necessary protection cable gland coupling
should be fixed with 20Nm torque when used with three sealings; 18Nm when used with two
sealing; 16Nm when used with one sealing. It is the final assemblers/users responsibility to
ensure the threaded joint between cable gland and the enclosure meet all the requirements
of the applicable standards for the assembly. Cable gland sealing are suitable for the circular
type cables. If other shaped cables will be used the sealing should be replaced with suitable
ones. The cable glands provided by Prosense are suitable to use temperature range in which
Mounting the Detector:
detector works.
The detector should be mounted vertically as the sensor head pointing downwards. Detector
has to be mounted such that the sensor's gas entrance area. The install location
• should be isolated from vibration, direct sun light and have temperature stability
• avoided external influences such as splashing water, oil, corrosive aerosols
• should have at least 30 cm free space beneath the sensor head to provide
accessibility for calibration work.
• should be in air flow between possible leak or collection point and possible source of
ignition.
Prosense do not recommend installing detectors to:
• directly above a cooking unit,
• directly above a sink unit,
• close to an extractor unit,
• outdoor without protection against the rain,
• in places where temperature is outside the admissible operating range,
• in corrosive environments,
• inside air vents.
• in environments where silicon can be found.
PRS-UM-PC3-EN-Rev.04-06.2020
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