Snifter mA+ EX RF User Manual 4
· The unit may be installed in ducting, containing particulate, hazardous to
health.
· The particulate may be inflammable, explosive or toxic
· The gas can be hot and pressurised
1.2 Product overview
The Snifter mA+ EX RF Dust monitor is a microprocessor-based, self-adjusting
device, equipped with two independent and fully adjustable alarm signal, isolated
4 – 20 mA output loop and back light illuminated front cover.
The device is designed for filter bag leak detection and continuous filter condition
management. It can also be used to detect blockage or stoppage in pneumatic
transport and bulk solids handling. It is a compact unit with the sensor and control
electronics built into one IP65 enclosure, which has been specifically designed for
easy installation and operation.
1.3 How does it work?
The Snifter mA+ EX RF uses Sintrol’s proven and reliable inductive electrification
technology where the interaction of particles with the sensor rod causes a small
electrical charge to pass between the particulate and sensor.
It is this small electric charge that provides the signal monitored by the electronics,
the signal generated is proportional to the dust level even if particles accumulate
on the sensor. Experience has shown that this method of monitoring dust level in
gasses, offers accurate results with minimum maintenance.
2 INSTALLATION
2.1 Selecting the installation location
The best location for installation is in a section of duct where the particulate has an
even distribution and the flow is as laminar as possible. This is to ensure that the
sensor rod comes into contact with a representative flow of particles.
The ideal position would be in a section of duct that has no bends, valves, dampers
or other obstructions for a distance equal to at least three duct diameters
downstream or upstream (preferable 5 x duct diameter).
Description of installation is presented in Figure 1 Recommended distance to duct
bends (D = Duct diameter).
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