Operating Instructions
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1. Introduction
1.1 Safety
ProSens sensor is powered from the transmitter.
DIN Rail Transmitter requires 24 ±10 % V DC power.
Caution:
The duct has to be exposed to a clean atmosphere during installation.
As such, the following should be considered:
• The gas flows or dust can be hazardous.
• Those flow can be inflammable, explosive, etc.
• The gases can be hot or under pressure.
1.2 Product Overview
The ProSens dust measurement systems are microprocessor-based and are pre-adjusted instruments for
measuring dust burdens in an airstream. ProSens is designed to monitor the clean air section behind filter
components and for measuring dust concentration in exhaust air ducts.
It is a compact unit consisting of a sensor and transmitter, enclosed in an IP 66 enclosure, which has been
specifically designed for easy installation and operation.
The standard transmitter is enclosed in the IP 65 housing and incorporates a touchscreen.
A DIN Rail Transmitter is also available, which is configured using the PC software.
The PME provides USB and RS 485 interfaces for PC configuration, the DIN Rail version can communicate
via RS 232 or RS 485 interfaces.
The PC software allows for configuration and calibration, which included the setting of internal parameters
like filter time, alarm hold time, etc.
With the software it is possible to monitor signal trends and to log protocol files.
ProSens is designed process pressures up to 2 bars and process temperature up to 250 °C.
An optional version is to be used in EX-zones category 1/2 gas & dust.
The sensor is connected to the transmitter using a 4 wire cable.
1.3 Mode of Operation
ProSens utilises tribo-electric technology whereby the interaction of dust particles with the sensor rod causes
a small electric charge, when the particles pass or hit by the sensor rod.
This small electric charge generates a signal proportional to the dust level even with an accumulation
of particles on the sensor rod. Experience has shown that this method of sensing dust level in gases offers
accurate results with a minimum of maintenance.
With power applied the unit is ready-to operate using factory setting and can be configured and calibrated
using the PME or PC software. For DIN Rail versions a PC is required for commissioning. Programmable
maximum & minimum alarm outputs are available. If the relay is used as “normally closed” (NC), the sensor is
also monitored for power failures. Also any other failure will be activated.
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