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Dräger PIR 7000


Description

The best performance characteristics alongside the greatest flexibility – the gas library of the infrared-optical transmitter Dräger PIR 7000 can be freely configured and offers exceptional linearity for each library substance across the whole measuring range.

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Benefits

Exceptional signal stability

​Based on patented innovations, the Dräger PIR 7000 combines
maximum light-efficient optics with a signal-stabilizing 4 beam
technology. The double-compensating construction is characterized by the
greatest possible robustness towards interferences (e.g. dust and dirt
deposits). Due to its non-imaging nature, the measuring signal of the
Dräger PIR 7000 remains unaffected by a partially covered beam. It can
thus be ensured that the instrument fully complies with the requirement
“no false alarms” .

Maximum reliability – SIL 2 certified!

​The Dräger PIR 7000 was developed and produced in accordance
with SIL standards EN 61508 and EN 50402. For the first time ever, the
software of a gas detection device was also assessed – excellent
parameters and a SIL 2 certificate from the German TÜV certify the high
product quality and reliability of the Dräger PIR 7000: Only two percent
of a SIL 2 budget are utilized by the Dräger PIR 7000. Therefore, there
is still much flexibility in the selection of control system and
actuators. The Dräger PIR 7000 therefore not only meets the SIL 2
requirements but far surpasses them.

Fast response mode

​The sooner a measurable gas concentration is indicated, the
faster counter measures can be initiated.
The configurable response mode of the Dräger PIR 7000 can be set to
“fast” for this purpose. In this mode, each measurable gas concentration
is indicated within one second. In conjunction with low alarm
thresholds, the gas transmitter can contribute to significantly reducing
reaction times in the case of an emergency.

Multiple configuration capabilities

​The standard parameterization of the Dräger PIR 7000 is based
on many years of experience. Nonetheless, the device provides the option
of setting many parameters specifically for customers and applications.
This includes smaller measuring ranges, configurable special signals
(for fault, beam block warning and maintenance) as well as adjustable
LEL values. And by uploading additional substances into the gas library,
the Dräger PIR 7000 can optimally display each target gas.

​Performance features

  • Two versions (type 334 and type 340) with different measuring
    wavelengths for different hydrocarbons with different sensitivities
  • Double-compensating and non-imaging optics (with 4-beam technology)
  • Customer-specific gas library: methane and propane (as well as
    ethylene for type 334) always included, up to 10 further uploadable
    substances
  • Configurable measuring range in %LEL, %(v/v) and ppm
  • Fastest response time of less than 1 second (t0..90 time)
  • Analog 4 to 20 mA and digital HART® output signal (including HART multidrop mode)
  • Beam block warning signal in the case of contaminated optics for predictive maintenance
  • Multiple configuration capabilities of all special signals (in accordance with NAMUR NE 43)
  • Specified minimum supply voltage of 13 V DC
  • Extended specified temperature range from – 40 °C to + 77 °C / – 40 °C to + 170 °F
  • Unrestricted usage in humid atmospheres
  • Hermetically close enclosure made of stainless steel SS 316L
  • Long maintenance interval thanks to minimum long-term

Literature

Brochure: Gas List 2015 (PDF)

List of detectable gases and vapours.

Brochure: Functional Safety and gas detection systems (PDF)

?Safety Instrumented Systems are used to reduce the risk for the protection of people, plants, and environment.

Brochure: More than the sum of their components (PDF)

?For over 70 years, Dräger has been one of the technology leaders in gas detection.

Brochure: Explosion protection and gas detection systems (PDF)

?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.

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