Dräger Polytron IR
The Polytron IR is a SIL 2 approved explosion proof infrared gas detector for the continuous monitoring of flammable gasses and vapours. With a 316 stainless steel enclosure and drift free heated measurement optics, it is built for the harshest industrial and offshore applications.
Product features
- Configurable measuring ranges
- The optimum default settings of the Polytron IR are based on many years of experience. In addition, the Polytron IR provides the option of user configurable parameters based on customer or application demands. Increased or reduced measuring range, adjustable LEL values, as well as configurable special signals (for fault, beam block warning and maintenance) provides maximum flexibility. A configurable internal gas library with 38 gasses and vapours (16 in the model 340) The configuration can easily be performed and is guided by the menu with a HART® handheld device or PC.
- User-friendly calibration function
- The Dräger Polytron IR can be calibrated in a user-friendly way with standard calibration gases: The calibration gas (e.g. methane or propane) is simply selected among the 38 substances in the transmitter's comprehensive gas library. The intended target gas is then selected from the same internal gas library and the calibration and sensitivity parameters are automatically calculated for the substance to be measured – Atex measurement performance approved.
- Patented "Beam Block" warning signal
- When the "Beam Block" warning signal is activated, the Polytron IR does not simply switch to fault but to a "stand-by mode": A warning signal is transmitted to the controller, whilst the measurement function continues in the background. When a gas concentration of 15% LEL or more is measured, the measuring function is returned to normal, alarming in hazardous situations with safety functionality maintained.
- Performance features
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- Two versions (type 334 and type 340) with different measuring wave lengths for different hydrocarbons with different sensitivities
- Double-compensating and non-imaging optics (with 4-beam process)
- A large gas library with up to 38 substances (of which 27 substances are performance approved in accordance with DIN EN 50054/50057)
- Configurable measuring ranges in LEL % , Vol. -% and ppm
- Fast response behavior, supported by the "chimney effect" of the splash guard
- An analog 4 up to 20 mA signal as well as digital output signals: RS 485 and HART® (including multidrop feature)
- Beam block warning signal in the case of dirty optics as a preventive maintenance function
- Configurable maintenance signal
- Specified temperature area from -40 °C to +65 °C
- Unrestricted usage in humid atmospheres
- Hermetically sealed 316 stainless steel enclosure
- Long maintenance interval thanks to minimum long-term drift
- No movable parts
- Typical life time: 15 years
- Explosion protection approvals for worldwide use: ATEX, IECEx, UL, CSA
- Dust ex-protection for zones 21 and 22
- Protection types: IP 65, IP 66 and IP 67
- Continual self-diagnosis according to T023
- Certified SIL-2 compatibility (Safety Integrity Level)
Product Information
The Dräger Polytron IR is an explosion proof infrared gas detector for continuous monitoring of combustible gases and vapours.
Accessories
Mounting set
Mounting the transmitters onto a wall, mounting plate, or other flush surfaces.
Order No.: 68 09 951
Splash guard
Guards the measuring cuvette against water and dirt, quick gas exchange through "chimney effect".
Order No.: 68 09 750
Insect guard
Guards against insects or spiders that might block the gas inlet or outlet apertures of the splash guard.
Order No.: 68 10 162
Hydrophobic filter
Guards the measuring cuvette against dust and insects, can be combined with other splash guard.
Order No.: 68 10 519
Flow cell
Function check for the transmitters for high wind speeds and/or high test gas concentration, suitable for process applications.
Order No.: 68 09 450
Remote test adapter
Function test/calibration of the transmitter with the usual test gas concentrations.
Order No.: 68 10 985
Gassing/process adapter
Sampling or process applications, material: POM (conductible).
Order No.: 68 09 946
Process cuvette
Sampling or process applications, fast response behavior through minimum inner volume, material: Stainless steel.
Order No.: 68 10 780
System Components
Tried and tested thousands of times and infinitely flexible. The modular Regard control system can be individually adapted to any monitoring task. Suitable for SIL 2 systems, the Regard system is also ATEX approved, and meets EMC directive standards.
The Regard 3900 is a standalone, autonomous control system for up to 16 gas detectors. It is fully configurable and monitors the concentration of toxic gases, oxygen and combustible gases and vapours.
Robust, reliable and very cost effective. The compact Regard-1 is a complete standalone system for the control of a single gas detector; suitable for monitors of toxic gases, oxygen, combustible gases and vapours.
Related Products
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Literature
List of detectable gases and vapours.
For over 70 years, Dräger Safety has been one of the technology leaders in gas detection. Our in-house research generates products which set new standards in terms of measurement accuracy, application and durability.
When there’s danger in the air ... this can quickly pose a high risk to humans, the environment, and all types of property and systems. Recognize the threat before it is too late.
Explosion hazards mostly arise from flammable gases and vapours. Instead of avoiding their ignition by explosion protection measures it may be preferable to detect them before they become ignitable.
Safety Instrumented Systems are used to reduce the risk for the protection of people, plants, and environment.
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Draeger Safety UK Ltd.
Ullswater Close
Blyth Riverside Business Park
Blyth, Northumberland
NE24 4RG
+44 (0) 1670 561413
Fax +44 (0) 1670 544475
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