D-R 220 dust and opacity measuring instrument

• Информационные материалы

  Информационные материалы

  

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

  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

  Дизайн

  

  System components D-R 220

  Measuring head

  The transmitter and receiver optics are integrated together with the electronics in a sturdy, 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 optical surfaces of the measuring head and the reflector clean. A cable connects the measuring head to the supply box.

  Optional:

  Fail-safe shutters

  The fail-safe 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 fail-safe shutter

  A control electronics system is required for each fail-safe shutter.

  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 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

  • Automatic self-test
  • Automatic zero point and reference point measurement
  • Manual contamination check
  • Very low maintenance with long-life LED
  • Remote access possible
  • Low-cost, space-saving measuring system in the familiar DURAG quality

  Технические данные

  Measured variables	Opacity Extinction
  Measuring ranges
  Opacity	0 ... 25/50/100 %
  Extinction	0 ... 0.2/0.4 ... 1.6
  Dust1)	0 ... 160 mg/m3 0 ... 4000 mg/m3
  Measuring principle	Transmission
  Sample gas temperature	Above dew point up to 200 °C, optional up to 500 °C
  Sample gas pressure	-50 ... +10 hPa, optionally higher
  Channel diameter	0.4 ... 10 m
  Ambient temperature	-20 ... +50 °C
  Degree of protection	IP65
  Measured value output	0/4 ... 20 mA, 400 Ω
  Digital outputs	2 relay outputs, 30 VA, max. 48 V/0.5 A
  Digital inputs	None
  Accuracy	< 2% of the measuring range
  Detection limit	< 2% of the measuring range
  Supply voltage	24 V DC, 0.4 A from supply unit
  Dimensions (H x W x D) measuring head	160 x 150 x 314 mm
  Weight
  Measuring head	2.7 kg
  Reflector	1.6 kg
  Supply box
  Purge air supply	From the supply box
  Supply voltage	85 ... 264 V AC, 46 ... 63 Hz, 50 VA
  Dimensions (H x W x D)	210 x 300 x 380 mm
  Weight	13 kg
  Degree of protection	IP65

  
  
  

  ¹⁾ with reference to 1 m 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 control 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.