Dust measurement after filters

ProSens

Provides continuous measurement values for dust concentration as a trend signal or absolute values

The ProSens has been specially developed to carry out reliable dust measurement on clean sides after filters.
The measuring device provides measurement values for dust concentration, either as a trend signal or as absolute values (after calibration) for emission measurement.

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Continuous, precise and reliable dust quantity measurement (mg/m³)
Dust measurement possible in large channel diameters

Output of dust concentration as absolute value
ATEX-certified

Measurement of dust concentration at high temperatures or harsh environment
Trend signal or absolute value

ProSens is used for:

trend measurement in any dust channel
exact measurements even with large channel diameters
applications in explosion hazard zones (GasEx-Zone 1, DustEx-Zone 20)
the measurement of dust concentration even at high temperatures or/and in harsh environment in various industries such as: Steel, Chemistry, Food, Cement, Minerals, Pharma

Output: absolute value in mg/m³

For exact measurement even with large channel diameters

Measurement of dust concentration even at high temperatures

Sensor Technical Data
Measuring objects	Particles in the gas flow
Measuring range	From 0.1 mg/m³
Process temperature	Standard: 150 °C; optional: max. 500 °C
Pressure	Max. 2 bar (Optional: up to 25 bar)
Flow speed	Min. 4 m/sec
Humidity	95 % rel. hum. or less (non-condensing)
Measuring principle	Electrodynamic technology
Ambient temperature	-20…+ 60 °C
Sensor rod	Material: stainless steel; length: 500 / 1000 mm
Housing	Aluminium
Protection type	IP 66; ATEX: cat. 1/2 GD
Electric connection	Connection room DIN M 20
Measurement value alarm relay output	Relay with switching contact Max. 125 V/AC, 2 A Not for EX-devices Cat. 1 and 2
Weight	Approx. 1.5 kg

Transmitter Technical Data
Power supply	24 V DC ±10 %
Power consumption	20 W / 24 VA
Protection type	IP 40 to EN 60 529
Ambient operating temperature	-10 … +45 °C
Dimensions (W x H x D)	23 x 90 x 118 mm
Weight	Approx. 172 g/td>
DIN rail fastening	DIN 60715 TH35
Connection terminals cable cross-section	0.2-2.5 mm2 [AWG 24-14]/td>
Current output	1 x 4 … 20 mA (0 … 20 mA), load < 500 Ω
Interface	ModBus RTU (RS 485) / USB/td>
Pulse output	Open collector – max. 30 V, 20 mA
Relay contact	Max. rated load: 250 V AC Max. peak current: 6 A Max. rated load 230 V AC: 250 VA Max. breaking capacity DC1: 3/110/220 V: 3/0.35/0.2 A Min. switching load: 500 mW (10 V / 5 mA)/td>
Data backup	Flash memory

The ProSens can be installed in metal channels and pipelines.
The installation should take place away from any curves and other inserts such as flaps and valves.
The distance between the sensor rod and inserts in the channel should be at least 3 times the channel diameter in every flow direction.
Non-metallic channels must be sheathed using a metal sleeve, a metal foil or a close-mesh metal grid over a length of at least 5 times the channel diameter. After determining the installation location, a hole must be drilled in the channel wall to insert the welding casing flush. The casing is now welded into place vertically to the channel. The sensor rod is then inserted in this and fastened with a fixing screw. The length of the sensor rod should at least 1/3 and at most 2/3 of the channel diameter. It can be shortened to the respective optimal length (up to 70 mm) without a problem.