D-R 320 dust measuring instrument

The D-R 320 is an optical dust monitor for the smallest to medium dust concentrations in dry emissions and process gas.

Область применения

The D-R 320 monitors not only the efficiency of the filter plants by registering the residual dust content, but also reports instantaneously when permissible levels of dust or flue gas emissions are exceeded. As a result, it is often possible to intervene directly in the process of the plant being monitored, thus ensuring reliable compliance with the specified limits.

Application areas

Continuous emission monitoring, for example, on:

Incineration plants in general
Plants according to IED 2010/75/EU WID/17. BImSchV (German Federal Emission Protection Ordinance)
Plants according to IED 2010/75/EU LCPD/13 BImschV/TA Air Quality
Waste, hazardous waste and sewage sludge incineration plants
Cement manufacturing plants
Power plants with gas, oil, coal or mixed fuel firing
Plants for the incineration of biomass

Monitoring of:

Ventilation units
Filter units

Certifications

Suitability-tested by TÜV Cologne, test report 936/21217455/A
Certified according to DIN EN 15267-3
MCERTS

Дизайн

System components D-R 320

Transmitter/receiver unit D-R 320 M

The transmitter and receiver optics are integrated together with the electronics in a compact unit in a rugged housing. The transmission-reception unit consists of the measuring head, the swivel adapter, the process connection and the field facing panel. This measuring unit is installed directly above the exhaust gas duct, on a DIN 100 PN 6 or ANSI 4" 150 lb flange. No adjustment is required.

Supply unit D-TB 200

The supply unit of the dust concentration measuring instrument D-R 320 is used to supply electricity and purge air and provides the connection for the transfer of the measured data. The regulated purge air is used to keep the optical interfaces of the transmission and reception optics of the D-R 320 clean. The device automatically reports any failure of the purging air.

Optional:

Universal control and display unit D-ISC 100

The connected equipment is easy to configure and operate using the D-ISC 100 universal control and display unit. The display provides an immediate overview of the current measured values and the status of the measuring instruments.

Measured value acquisition

In the simplest case the measured values and reference values are transferred to the plant's control system. The measured values and status signals that are sent can also be fed to an emission calculator system for further processing, either via discrete signals (4 to 20 mA and configurable relay contacts) or via Modbus according to VDI 4201-3.

Quick-closing shutter

The swivel adapter can be optionally replaced by an adapter with a fully integrated quick-closing shutter. By using this quick-closing shutter, the path between the measuring device and the exhaust gas is closed mechanically, but not airtight in the event of a fault (failure of power supply or purge air); the measuring device is thereby temporarily protected against overheating. The measuring head takes over control of the quick-closing shutter.

Weather protection covers

A weather protection cover is available to protect the measuring system when it is installed outdoors.

Explosion proof version

An explosion proof version with pressurized enclosure according to Ex p, Zone 1 or Zone 2 is available for use in hazardous areas.

Функции

The device operates according to the backscattering principle. The light of a laser diode illuminates the dust particles in the measuring volume of the flue gas duct. The light reflected by the particles is measured and evaluated.

The D-R 320 does not require a light trap. The background light in the stack is detected by means of a special optical system with an integrated dual detector and automatically compensated without manual adjustment.

The universal control unit D-ISC 100 can be connected for the measured value display, which allows up to eight dust and volume flow measurement instruments.

The connected equipment can be operated and configured conveniently using the D-ISC 100. The display provides an immediate overview of the current measured values and the status of the measuring instruments.

Control functions

The D-R 320 automatically performs zero and span check as well as contamination check at regular intervals and on demand. The device features an automatic contamination correction. Need for maintenance is immediately indicated by the electronics.

Особенности

Continuous measurement of dust concentration
Smallest certified measuring range 7.5 mg/m³
Easy installation on standard flanges
Easy setup without manual adjustment
Automatic background light compensation, no light trap
Convenient operation, remote access option
Automatic control functions
Integrated purge air regulation and purge air control
Maintenance interval 6 months
Certified to EN 15267-3
Data transmission via Modbus, in compliance with VDI 4201-3

Технические данные

Measuring head
Measured variable	Dust concentration
Measuring ranges	0 ... 5 mg/m³to 0 ... 200 mg/m³
Measuring principle	Backscattering
Sample gas temperature	0 ... 600 °C
Sample gas pressure	-50 ... +50 hPa, optionally higher
Channel diameter	> 0.7 m
Ambient temperature	-40 ... +60 °C
Degree of protection	IP65
Measured value outputs	0/4 ... 20 mA, 400 Ω Modbus RTU bi-directional
Digital outputs	2 relay outputs, permissible load 60 V DC, 30 V AC / 0.5 A
Digital inputs	None
Auxiliary power	24 V DC/0.5 A
Dimensions (H x W x D)	200 x 190 x 260/410 mm
Weight	15 kg
Supply unit
Purge air supply	Integrated blower
Supply voltage	115/230 V AC, 50/60 Hz, 0.37/0.43 kW
Dimensions (H x W x D)	480 x 450 x 320 mm
Weight	12 kg
Degree of protection	IP65

Дальнейшая информация

Please consult your Siemens sales partner for information on how to correctly configure and order a D-R 320 measuring instrument for a Siemens CEMS project.