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5 SENSOR INSTALLATION
5.1 SAFETY INFORMATION
WARNING! – DANGER FROM PROCESS
It is possible that the sensors are to be installed in ducting containing process particulate that is hazardous
to health.
Unless the process conditions are known to be entirely safe, suitable precautions such as the use of breathing
apparatus or duct purging/ detoxifying must be employed before any entry is made into the duct for installation
or maintenance purposes. If in doubt, consult your local Safety Officer and/or local safety procedures.
WARNING! – ELECTRIC SHOCK
Ensure that only the cables types specified are used for powering and interconnection of equipment.
5.2 PREREQUISITES AND GUIDELINES
5.2.1 Choosing the Best Position for the Sensor
When selecting a mounting location for the sensor, the following guidelines are based on the related standards
should be taken into consideration to ensure optimum performance of the instrument, safety, and for compliance
purposes.
The best position for the sensor unit is in a section of ductwork where the particulate has an even distribution and
the flow is linear. This would ideally be in a vertical or horizontal section of duct that has no bends or obstructions
for at least three duct diameters downstream or upstream. In many applications, a compromise must be made,
but the sensor should be fitted in a position that satisfies the majority of the below requirements.
NOTE: The sensor must be fitted to metal ductwork in order to be electrically screened from interference signals
(see Grounding the Sensor below)
5.2.2 Location Requirements
When selecting a mounting location for the sensor the following should be taken into consideration for optimum
performance:
In the longest, straightest, unrestricted section of ductwork available.
•
In metallic ductwork (for non-metallic ducts contact Goyen | Mecair).
•
Away from ambient or radiated temperatures greater than +50°C (120°F).
•
Where possible, the equipment should be mounted out of direct sunlight, precipitation, and away from
•
running water.
Hazardous Zones: refer to the Sensor Safety Description on page 6 for details of ATEX-related special conditions
•
and requirements.
5.2.3 Cabling Guidelines
Cables should be fixed such that they are free from excessive vibration and not under strain. Cables should
be secured in accordance with good engineering practice (e.g. using cable trays where possible) and careful
consideration should be given to the positioning of cables so that they are not damaged easily.
Cables should be routed to avoid sources of large electromagnetic fields, such as heavy switching gear. Care taken
during the installation of the cables ensures a long, maintenance-free life and avoids possible damage to the sensor.
B
The definitive guide for isokinetic sampling port location is given in standards ISO 9096 and EN 13284-1.
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INSTALLATION AND OPERATION MANUAL – OWNER'S RECORD FFD MANUAL – FILTER FAILURE DETECTOR
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