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G_PA10_XX_00378
D-R 320 system components
Measuring device D‑R 320 M
The measuring device is integrated together with the electronics in a compact unit in a rugged enclosure.
The measuring device consists of:
- Transceiver
- Swivel adapter
- Process connection
- Field diaphragm
This measuring unit is installed directly above the exhaust gas duct on a DN 100 PN 6 or ANSI 4" 150 lb flange. No adjustment is required.
Supply unit D‑TB 200 with purge air supply
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 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.
Software D‑ESI 100
Parameterization software, visualization of the measured data and performance of maintenance functions.
The device can be parameterized, maintained and, in the event of a fault, analyzed via the USB port with the help of a PC and the associated software D‑ESI 100.
Optional
Universal control unit D‑ISC 100
Up to eight connected devices can be easily configured and operated using the D‑ISC 100 control 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 output can also be fed into 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 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 temporarily protected against overheating in the event of a fault. The measuring device takes over control of the quick-closing shutter.
Weather protection covers
Weather protection covers are available to protect the measuring system for outdoor installation.
Explosion-proof device design
An explosion-proof device design with pressurized enclosure according to Ex p, Zone 1, Zone 2 or Zone 22, as well as IECEx Zone 2 is available for use in hazardous areas.
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The device operates according to the backscattering principle. This means the light of a laser diode illuminates the dust particles in the measuring volume of the exhaust gas duct. The light reflected by the particles is measured and evaluated.
The automatic background compensation via a patented optical system with integrated double detector is the unique feature. This enables quick and easy commissioning without adjustment. A light trap is not required.
By means of a gravimetric reference calibration, a calibration curve can be stored on the integrated electronics and the measured signal can be converted into a dust concentration in mg/m³.
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 automatic contamination correction. Any maintenance required is immediately indicated by the electronics.
