The Drager Polytron 8720 IR Gas Detector is an advanced explosion-proof transmitter for the detection of carbon dioxide in percent volume or ppm. It uses a high performance infrared Draeger PIR 7200 sensor, which can be submerged in water without damage.
Besides a 3 wire 4 to 20 mA analog output with relays, the Drager Polytron 8720 IR also offers Modbus and Fieldbus making it compatible with most control systems.
Benefits:
Detection of carbon dioxide
The Drager Polytron 8720 IR Gas Detector is equipped with digital interfaces allowing for quick and easy remote interrogation of the transmitters 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 Drager Polytron 8720 belongs to the Drager 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.
3 relays for controlling external equipment
The Drager Polytron 8720 can also be supplied with 3 integrated relays. This enables you to use it as an independent Gas Detection System with 2 arbitrarily adjustable concentration alarms and 1 fault alarm.
Safe, robust housing for every application
The Drager Polytron 8720 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).
Make the impossible possible with the remote sensor
An available remote sensor condulet housing allows the PIR sensor to be installed up to 30 meters (100 feet) away from the Draeger Polytron transmitter. A special calibration flow cell accessory permits one person to perform a full calibration of a remote mounted sensor from the transmitter.
Data logger
The Draeger Polytron 8720 IR Gas Detector has a data logger, which records measuring and event data from the past years.
