EP EHRLER PRÜFTECHNIK ENGINEERING GMBH - Your specialist for flow measurement technology


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Analysing the gas quality in the gas network is essential to monitor technical specifications and ensure correct billing. The GasPro is a mobile gas sampler, with which cyclic sampling can be carried out easily and flexibly at any point from dry gas networks. The samples are collected in a sample cylinder in the GasPro and can then be analysed in a laboratory. The GasPro allows the separation of sampling and sample analysis and is therefore more cost effective and flexible than for example fixed installed gas chromatographs.

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With our HPT heat pump test bench you can simulate humidity as well as temperature. The test stand is used for functional testing of air-to-water heat pumps according to DIN EN 14511. Current test systems on the market, which are used to test e.g. air-to-water heat pumps, are climatic chambers with a cooling, heating and humidification unit fixed to the roof. The disadvantage of this concept is that it is not possible to set a homogeneous temperature and humidity distribution in the cube-shaped room. Based on test engineering concepts in the automotive industry, EP-E developed a concept in which the air flows in a closed loop (loop design). The HPT heat pump test stand is a closed-loop test stand for functional testing of air-to-water heat pumps according to DIN EN 14511. The advantageous closed-loop design uses an insulated chamber with conditioning units for temperature and humidity outside the chamber.

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Apparatus for pressurizing test pieces We offer burst test benches to test load-bearing elements under pressure for their resilience. The components to be tested are put under pressure until they burst. Depending on the requirements (e.g. depending on the medium, pressure range, static or pulsating tests) we build your customized test stand.

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Over the last few years, we at EP-E have designed and introduced a series of primary standards for gases, designed for use in calibration laboratories. As a technology partner of the Physikalisch-Technische Bundesanstalt (PTB) in Braunschweig, our solutions are based on the highest standards. The EP gas bell plungers generate a volume flow which is traceable to the SI units length and time. The pistons are driven by a stepper motor via a spindle. In the initial state one piston is fully retracted and the other fully extended. The volume flow can be set with high precision via the piston cross section and the travel speed. At the end of the calibration process, both pistons are in the opposite position to the initial position. The calibration device is preferably operated with air, which can be supplied with up to 6 bar. The EP gas bell pistons convince by highest measuring accuracy up to 0.15% (k=2).

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EP Engineering GmbH supplies a complete range of products and services in the metrology and testing technology field, specialising in high-precision flow measurement technology. As a complete service provider, we offer customers the highest quality, supplying test benches, measuring systems, software solutions and calibration and service. We are one of the few companies in Germany to own and operate a DAkkS (German Accreditation Body) laboratory. In order to further develop current standards and measuring methods, we conduct research with our partners to identify new paths in metrology and testing engineering for gases and liquids, and maintain close cooperation with the Physikalisch-Technische Bundesanstalt (PTB) (national metrology institute) in Braunschweig.


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Wilhelm-Hachtel-Strasse 8

97996 Niederstetten - Germany


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Key figures

  • Company headcount
    51 – 100


  • Year established
  • pages.epage-home.site-status
    Registered office
  • Main activity
    Service Provider

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  • Check Circle Outline icon International

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  • Measurement and regulation equipment and instruments - output and flow
  • Gas meters
  • metrology
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