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Drager Polytron 8700


The Dräger Polytron® 8700 IR is an advanced explosion proof transmitter for the detection of combustible gases in the lower explosion limit (LEL). It uses a high performance infrared Dräger PIR 7000 sensor, which will quickly detect most common hydrocarbon gases. Besides a 3 wire 4 to 20 mA analogue output with relays, it also offers Modbus and Fieldbus making it compatible with most control systems.

Efficient, stable and robust – the Dräger PIR 7000

With its stainless steel 316L enclosure and drift free optics, the Dräger PIR 7000 is built for the harshest industrial environments such as offshore installations. The unique 4 beam signal stabilizing system makes the sensor resistant to dust or dirt deposits on the optical surfaces. Environmental and ageing effects are compensated ensuring long term, drift free operation. The integrated gas library with up to 100 gases provides a high degree of application flexibility. Each of the gases listed there can be picked from the menu and automatically cross-calibrated with a standard calibration gas such as methane or propane. No need to consult the factory when applications change.

Easy device management via digital communication

The Dräger Polytron 8700 is equipped with digital interfaces allowing for quick and easy remote interrogation of the transmitter’s state. Integration with existing asset management systems such as PactWare is possible via DTM. In addition to the common HART® communication system, the fieldbus interfaces PROFIBUS PA, FOUNDATION Fieldbus H1, and Modbus RTU are also available.

Data logger

The Polytron 8700 has a data logger, which records measuring and event data from the past years.



Same design, same operating principle

The Dräger Polytron 8700 belongs to the Polytron 8000 series. All transmitters in this series have the same design and user interface. This allows for uniform operation with reduced training and maintenance requirements. The large graphic backlit display shows status information clearly and in an easy to use format. The measured gas concentration, selected gas type, and measuring unit are displayed during normal operation. Colored LEDs (green, yellow and red) provide additional alarm and status information. The Polytron 8700 is operated by means of a magnetic wand over contact surfaces.

Three relays for controlling external equipment

Upon request, the Dräger Polytron 8700 can also be supplied with three integrated relays. This enables you to use it as an independent gas detection system with two arbitrarily adjustable concentration alarms and one fault alarm. Audio alarms, signal lights or similar devices can thus be controlled locally without an additional cable between the transmitter and central controller. (where approved).

Safe, robust housing for every application

Polytron 8700 features a Class I, Div. 1 rated explosion proof enclosure made from aluminium or stainless steel, making it suitable for a wide range of environmental conditions. A protection type “e” version includes a convenient docking station which allows installation in hazardous atmospheres without running conduit

Make the impossible possible with the remote sensor

An available remote sensor condulet housing allows the PIR sensor to be installed up to 30 metres (100 feet) away from the Polytron transmitter. A special calibration flow cell accessory permits one person to perform a full calibration of a remote mounted sensor from the transmitter.


Datasheet

Ordering Information


Dräger Polytron® 8700 IR

Dräger Polytron® 8700 IR 334 d A 4-20/HART® 8344601
Dräger Polytron® 8700 IR 334 d A 4-20/HART® relay 8344602
Dräger Polytron® 8700 IR 334 e A 4-20/HART® (incl. Docking Station) 8344619
Dräger Polytron® 8700 IR 334 e A 4-20/HART® relay (incl. Docking Station) 8344620
Dräger Polytron® 8700 IR 340 d A 4-20/HART® 8344637
Dräger Polytron® 8700 IR 340 d A 4-20/HART® relay 8344638
Dräger Polytron® 8700 IR 340 e A 4-20/HART® (incl. Docking Station) 8344655
Dräger Polytron® 8700 IR 340 e A 4-20/HART® relay (incl. Docking Station) 8344656
Dräger Polytron® 8xx0 Kit (Custom configuration e. g. stainless steel housing) 8344800

Accessories

Magnetic wand 4544101
Pipe mount bracket 4544198
Duct mount kit 6812300
Duct mount kit Flow Cell for PIR 7x00 6811945
Duct mount kit Bump Test Adapter for PIR 7x00 6811990
Status indicator for PIR 7000 6811625
Splash guard for PIR 7000 6811911
Flow Cell for PIR 7000 8323405
Bump Test Adapter for PIR 7000 6811630
Insect guard for PIR 7x00 6811609
Hydrophobic filter for PIR 7x00 6811890
Calibration adapter for PIR 7x00 6811610
Process adapter for PIR 7x00, POM (Polyoxymethylene) 6811915
Process adapter for PIR 7x00, stainless steel 6811415
Aluminium junction box for remote sensor ‘d’ 4544099
Stainless steel junction box for remote sensor ‘d’ 4544098
Spacer 6812617
Dräger PIR 7000 334 for remote sensor ‘e’ variant 6811825
Dräger PIR 7000 340 for remote sensor ‘e’ variant 6811819



Drager

Please note - Product designs and specifications are subject to change without notice. The user is responsible for determining the suitability of this product.

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