D-R 220 dust and opacity measuring instrument Siemens

Область применения

The D-R 220 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 to be monitored and thus ensure reliable compliance with the specified limit values.

Areas of application

• Compact device for smaller plants
• Heating plants, power plants
• Boiler plants in industry, barracks, hospitals, schools
• Dust extraction and filter plants
• Process monitoring

Обзор

The D-R 220 is a scattered light dust and opacity measurement device for monitoring dust emissions in smaller plants and process applications.

Дизайн

System components D-R 220

Measuring head

The transmitter and receiver optics are integrated together with the electronics in a sturdy but compact polyamide housing. The measuring head is mounted on the weld-in flange.

Reflector

The reflector is installed in a sturdy polyamide housing. The reflector is mounted on the weld-in flange directly opposite the measuring head.

Supply box with purge air unit

A hose connects the measuring head and the reflector with the supply box. The filtered air is used to keep clean the scattered light interfaces of the measuring head and the reflector. A cable connects the measuring head to the supply box.

Optional:

Quick-closing shutters

The quick-closing shutters are mounted on the measuring head and the reflector side between the weld-in flanges and the connected devices (measuring head, reflector). In the event of a fault (failure of the power supply or purge air) they automatically close the path between the exhaust gas duct and the measuring equipment.

Electronics for quick-closing shutter

A control electronics is required for each quick-closing shutter.

Universal control unit D-ISC 100

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.

Measured-value acquisition

In the simplest case a recorder is used to record the measured values and the reference values. The measured values and status signals that are output can also be fed into systems that will process these further.

Weather protection covers

Weather protection covers are available to protect the measuring head and the reflector when the measuring system is installed outdoors.

Additional options:

• Neutral density filters for linearity check
• Sighting scope for easy alignment

Функции

The device operates using the double-pass method according to the auto-collimation principle. The light beam traverses the measuring distance twice. The attenuation of the light beam by the dust content in the measuring section is measured and evaluated.

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

Особенности

• In-situ measurement directly in the flue gas flow
• Digital operation with microprocessor
• Adjustable limit value
• 2 contact switch outputs
• Measuring value integral 4/15/60 seconds
• Internal event memory with real-time clock
• Modbus RTU interface
• Measurement results shown as opacity or extinction
• No weather protection covers needed

Технические данные

¹⁾ With reference to one meter of path length after gravimetric calibration

Дальнейшая информация

In general, a dust concentration measuring instrument D-R 220 consists of:

• 1 measuring head D-R 220 M
• 1 zero point reflector
• 1 reflector
• 2 welded tubes with adjustment flange
• 2 purge air adapters with clips
• 1 operating unit (for up to 8 sensors)
• Parameterization software with stick and USB cable
• 1 supply box (incl. purge air blower) 115/230 V, 50/60 Hz
• Operating instructions
• Weather protection covers for measuring head, reflector, blower, control unit, etc.

Please consult your Siemens sales partner for information on how to correctly configure and order a D-R 220 measuring instrument for a Siemens CEMS project.