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Dräger Polytron® 8720 IR

The Dräger Polytron® 8720 IR is an advanced 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. Besides a 3 wire 4 to 20 mA analog output with relays, it also offers HART®, Modbus and Fieldbus making 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.

Easy device management via digital communication

The Dräger Polytron 8720 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 8720 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 8720 is operated by means of a magnetic wand over contact surfaces.

Three relays for controlling external equipment

Upon request, the Dräger Polytron 8720 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 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. 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.

Data logger

The Polytron 8720 has a data logger, which records measuring and event data from the past years. A graph function displays the history of the past 15 minutes on a time/concentration graph.


Polytron 8720 IR Product Information, en-us
Polytron 8720 IR Product Information, en-us


Explosion Protection Brochure, en-master
Explosion Protection Brochure, en-master

Detecting flammable gases and vapours before they become a hazard takes priority over mechanical and electrical explosion-protection measures.


Gas List Brochure, en
Gas List Brochure, en

List of detectable gases and vapours.


PolySoft V1.21.0 Setup
Polytron 8000 Series Manual 9033828
Handbook: An Introduction to Gas-Detection Technology (1st Edition)
ATEX PTB 11 1005X and IECEx PTB 11.0005X Clarifiaction usage blind plug gas transmitter Polytron 5xx0/8xx0, en
DoC SE23109-11 Polytron 8xx0 de, en
Lloyd´s Register Type Approval LR23327294TA Polytron 8xx0 en
MTG PERF BVS 13 ATEX G 001 X N10 en
MTG PERF PFG 14 G 001 X N8 en
AI Duct Mount Kit (PIR 7000) Polytron 5000/8000 9033236 ME
AI IR Interface Kit Polytron 5000/8000 9033239 me
AI Junction Box Ex d 4544286 ME
AI Polytron 5000/8000 - Pipe Mount Kit 9033237 ME
AI Polytron 5000/8000 4544288 ME
AI Polytron 5700... Polytron 5xx0/8xx0 Mounting Spacer 9033241 me
AI Polytron 5xx0/8xx0 Docking Station for e-version 9033242 ME
AI Sun and weather protection Polytron 5/6/8xxx / x700/x720 - 9300267 de-me
Approval key/ Zulassungscode Polytron 5xx0/ 8xx0 Series/ Familie, en, de
ATEX blind plug Polytron 5xx0/ 8xx0, en
ATEX certificates Polytron 8xx0 previous, en, de
ATEX PTB 11 1005X Sup_7 (Iss. 04) updating to newest standards Polytron 5xx0/8xx0, en
CCS Type Approval China P8xx0 valid until 2026-06-14, zh, en
CSA Certificate 2518052 Sup_5 Polytron 5xx0/ 8xx0, en
DNV GL SE MEDB0000411 Rev.1 valid until 2029-02-14, en
DNV GL SE MEDD00000TF Rev.5 valid until 2024-10-23, en
DNV TAA000022H Rev.1 valid until 2029-02-28, en
DNV TAA000022H Rev.2 valid until 2029-02-14, en
DNV UK MERB0000411 Rev.1 valid until 2029-02-18, en
DNV UK MERD00000TF Rev.1 valid until 2029-02-05, en
DoC SE23109-09 Polytron 8xx0 de, en
Dräger Polytron 8xx0 DD HART Simatic PDM for the firmware version: 3.2.1
Dräger Polytron 8xx0 firmware for bootloader version 4.0.4
Dräger Polytron 8xxx comDTM MB Setup V2.5.0
Dräger Polytron 8xxx DD FF AMS V4.0
Dräger Polytron 8xxx DD FF Field Connector V4.0
Dräger Polytron 8xxx DD HART® AMS 1.x R400.2.
Dräger Polytron 8xxx DD HART® AMS FW1.x
Dräger Polytron 8xxx DD HART® AMS FW2.0.x
Dräger Polytron 8xxx DD HART® Field Connector 475 FW1.x
Dräger Polytron 8xxx DD HART® Field Connector 475 FW2.0.x
Dräger Polytron 8xxx DD HART® PDM V2.0
Dräger Polytron 8xxx DD PB PDM V4.0
Dräger Polytron 8xxx DTM FF Setup V1.0.0.1054
Dräger Polytron 8xxx DTM HART® Setup V2.2.0.722
Dräger Polytron 8xxx DTM MB Setup V1.0.652.0
Dräger Polytron 8xxx DTM PB Setup V1.0.0.1054
Drilling Template/ Bohrschablone 4544299 Polytron 5xx0/8xx0, en, de
IEC Ex blind plug Polytron 5xx0/ 8xx0, en
IECEx PTB 11.0005X Iss. 08 Polytron 5xx0/ 8xx0, en
IECEx PTB 11.0005X Iss. 09 Polytron 5xx0/ 8xx0, en
IECEx PTB 11.0005X Iss. 10 Polytron 5xx0/ 8xx0/ SensorAlive, en
IECEx PTB 11.0005X Issue 00
IECEx PTB 11.0005X Issue 01 (Online Version)
IECEx PTB 11.0005X Issue 02 (Online Version)
IECEx PTB 11.0005X Issue 06 adding field bus and newest standards
IFU Polytron 8000 series - Safety Manual - 9033307 en-us
INMETRO TÜV 12.0503 X Rev5, pt, en
Inspection Certificate DIN EN 10204-3.1 Template P5xx0/8xx0, en, de, fr
IP rating Polytron 5xx0/ 8xx0 SE24009-01, en
Limited Manufacturer Guarantee_Garantiekarte Polytron 8100, 8200, 87x0, 8900 9300655 (ed 02), en, de
More than the sum Brochure, en
MTG PERF BVS 13 ATEX G 001 X Issue 01 en
MTG PERF BVS 13 ATEX G 001 X N3 en
MTG PERF BVS 13 ATEX G 001 X N4 en
MTG PERF BVS 13 ATEX G 001 X N6 en
MTG PERF BVS 13 ATEX G 001 X N8 en
MTG PERF BVS 13 ATEX G 001 X N9 en
MTG PERF PFG 14 G 001 X N2 en
MTG PERF PFG 14 G 001 X N7 en
MTG PERF SBTS 2014-C154 en_zh
PESO P325930-1
Polytron 8000 Device DTM ( for FF H1_
Polytron 8000 Device DTM ( for Profibus PA(003)
Polytron 8000 Device DTM ( for 0x52_
Polytron 8000 DTM FDT Certificate 2012-0043
Polytron 8000 HART Manual Rev2.1, en
Polytron 8700/8720 Customer Spare Parts List, en
Polytron 8xx0 HART Certificate of Registration, en
Possible combinations of remote sensors Polytron 5xx0_8xx0
PROFIBUS PA system desciption, en
Russian & CIS Approvals please contact Olga Timofejev
Shipping ABS 21-2079629-PDA valid until 2026-03-02, en
Signal Transmission Handbook, en
SIL Brochure, en
UAE ECAS Certification
UL Cert. of Compliance 20110217-20230823-E180059
UL Cert. of Compliance 20111217-E180059 Supp1 adds ITR04_05_XTR04_05
UL Cert. of Compliance 20160210-E180059 Supp .3 adds P8 with fieldbus

Fixed gas detectors, sensors and substances

Dräger gas detectors can be used with different sensors to detect a large number of hazardous substances. Check which sensor fits into this detector by searching for a substance. Contact our experts to get more information on our wide portfolio.

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Technical Data

Key Facts

Response time
<= 8 seconds
Cable entry
M20 or 3/4" NPT
Intrinsic Safety
Increased Safety
✓ SIL 2 (IEC 61508-1-3)
4-20 mA

Technical Data

Power Supply
10 to 30 VDC, 3-wire
Temperature (operation)
-40°F - 170.6°F
0 to 100% r.h., non-condensing
Pressure (hPa)
700 - 1300
Dimensions (H × W × D)
0.92x0.49x0.43 ft
12.57 lb
Housing Material
Epoxy coated copper-free aluminum or stainless steel SS316 L
Degree of protection (IP class)


CE marking
Performance approval
Shipping approval

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Draeger, Inc. – Safety

7256​ ​S.​ ​Sam​ ​Houston​ ​W​ ​Pkwy.,​ ​Suite​ ​100
Houston,​ ​TX​ ​77085