Dräger Polytron® 8700 IR
Benefits
Flammable Gas Detector
Sensor: IR Sensor Installation: Increased Safety or flameproof Interface: 4-20 mA, Relays, Bus, HART ® IP class: IP65/66/67 and SIL2 Special: Display
Efficient, stable and robust – the Dräger PIR 7000
The Dräger PIR 7000 is efficient, stable and robust. With its stainless steel SS 316L enclosure and drift-free optics, the Dräger PIR 7000 is built to withstand the harshest industrial environments, offshore installations for example. The unique double compensated 4 beam measuring system makes the sensor resistant to dust or dirt deposits on the optical surfaces, environmental or ageing effects and long term drift. In combination with the Polytron 8700 it offers a gas library with up to 100 gases providing a high degree of application flexibility. Each of the listed gases can be picked from a 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.
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. Audible alarms, signal lights or similar devices can thus be controlled locally without an additional cable between the transmitter and central controller.
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 (where approved) and this also facilitates pre-assembly.
Make the impossible possible with the remote sensor
The remote sensor connection housing allows you to install the sensor separately from the transmitter. This allows you to simply place the sensor closer to the gas cloud in hard-to-reach locations. The display remains visible at eye level. Since the sensor is connected via an intrinsically safe connection, no conduit cabling is required. The connection also allows 'hot replacement' of the sensor in the hazardous area.
Data logger
The Polytron 8700 has a data logger, which records measuring and event data from the past years.
KEY FACTS
Type
Transmitter
Response time
4 seconds
Cable entry
M20 or 3/4" NPT
Display
✓
Intrinsic Safety
✗
Flameproof
✓
Increased Safety
✓
SIL
✓ SIL 2 (IEC 61508-1-3)
4-20 mA
✓
Bus
✓
HART®
✓
Wireless
✗
Technical Data
Power Supply
10 to 30 V DC, 3-wire
Temperature (operation)
-40°C - 77°C
Humidity
0 to 100 % r.h., non-condensing
Pressure
700 - 1300
Dimensions (H × W × D)
0.28x0.15x0.13 m
Weight
12.57 lb
Housing Material
Epoxy coated copper-free aluminum or stainless steel SS 316L
Degree of protection (IP class)
IP65/66/67
Features
ATEX
✓
IECEx
✓
UL
✓
CSA
✓
CE marking
✓
GOST (EAC)
✓
Epoxy coated copper-free aluminum or stainless steel SS 316L
✓
Shipping approval
✓
FM
✗
Downloads
Polytron 8700 IR Product Information, en
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 HART®, Modbus and Fieldbus making it compatible with most control systems.
Explosion Protection Brochure, en-master
Detecting flammable gases and vapours before they become a hazard takes priority over mechanical and electrical explosion-protection measures.
Brochure: Digital Communication (PDF)
Dräger has counted on digital communication for over 30 years. This includes the globally recognised HART®, FoundationFieldbus H1®, Profibus PA® and LON technologies.
