The Dräger Polytron® 5720 IR is a cost effective explosion proof transmitter
for the detection of carbon dioxide in percent volume or ppm. It uses a high
performance infrared Dräger PIR 7200 sensor, which can be submerged in
water without damage. A 3 wire 4 to 20 mA analog output with relays makes it
compatible with most control systems.
The Dräger Polytron® 5720 IR is a cost-effective explosion proof transmitter for the detection of carbon dioxide in volume percentage or ppm.It uses a high-performance infrared Dräger PIR 7200 sensor that can be submerged in water without damage.A 3-wire 4-to-20 mA analogue output with relays makes it compatible with most control systems.
Efficient, stable and robust – the Dräger PIR 7200
With its stainless steel 316L enclosure and drift free optics, the Dräger PIR 7200 is built for the harshest
industrial and commercial outdoor environments. 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 measuring range can be freely adjusted between 0 – 2,000 ppm
and 0 – 30 % volume enabling a wide variety of applications.
Same design, same operating principle
The Dräger Polytron 5720 belongs to the Polytron 5000 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 8520 is
operated by means of a magnetic wand over contact surfaces.
Three relays for controlling external equipment
Upon request, the Dräger Polytron 5720 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 5720 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. The included splash guard features a chimney
effect that actively draws ambient air inside enabling gases to be detected in under 10 seconds.
Make the impossible possible with the remote sensor
A remote explosion proof junction allows installation of the sensor up to 100′ away from the transmitter in
difficult to access areas. A convenient flow cell allows for remote bump testing or calibration from the Polytron
display by using permanently attached tubing that takes the calibration gas to the sensor.
