DURAG D-R 290, Operating Manual

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4 | Product description
D-R 290 41
Product description
This section explains the units that make up the measuring system and how these
units work together. It lists the basic characteristics of the products and defines the
designations of the device components.
It also lists various alternative arrangements with other measurement heads and tube
diameters / flange diameters.
This Operating manual is applicable to the 2nd generation Dust Concentration and
Opacity Monitors D‑R 290 . The devices are based on the DURAG sensor concept
and are compatible with the D−ISC 100 universal control unit and D−ESI 100 PC soft­
ware.
Fundamental features
Optical transmission meters of proven suitability and certified for measurement of the
opacity of the gas being measured. Capable of being calibrated for measurement of a
range of dust concentrations, from low to high.
Suitable for use in plants for which the monitoring of the dust emissions is required by
law.
The outputs from the measuring heads and the control unit can be freely assigned to
four digital channels which can parameterised independently of each other. This
means that the optical density, dust content, opacity etc. can be output simultaneous­
ly.
Other features are:
●
Continuous in situ [
}
195] measurement directly in the smoke gas flow, contact-
free , without extraction of a sample.
●
Long working life due to the use of a semiconductor light source.
●
Outstanding measured value basis thanks to use of a super wide band diode
(SWBD). This broad spectrum enables a more stable measurement than can be
achieved using conventional LEDs.
●
Cyclical system function test; additional automatic internal contamination checks
and associated measured value corrections.
●
Long maintenance intervals due to the supply of a protective shield of purge air in
front of the measurement head and reflector and the heated outer glass of the
measuring device.
●
Simple to install and operate using the external control unit with a digital display or
using the operating software installed on a laptop or tablet PC via a USB connec­
tion.
●
In accordance with the DURAG sensor concept, the system uses the D-ISC 100
universal operation unit for visualisation of the measured values. The D-ISC 100
permits the use of a variety of input and output interfaces (Modbus serial and TCP
to VDI 4201, analogue inputs and outputs, relay contact inputs and outputs.)
Device and Function description
In the standard system, the D−R 290 Dust Concentration and Opacity Monitor con­
sists of five main components:
●
measuring head D‑R 290 M
●
reflector D‑R 290 R
●
D-TB 100 supply unit and / or
●
D-ISC 100 control unit
●
D-BL blower assembly (purge air unit)
●
Two welded-in pipes with adjustment flange D‑R 290 E or D‑R 290 − 150 E.
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