produktheader cwd2005 dpc


  • The CWD2005 DPC (Direct Purge Certified) is a combustion calorimeter with type approvals for operation in hazardous areas (Class I, Division 2; Group B, C, D; T4). This approval is based on indoor installation in closed rooms with external energy and compressed-air supplies. The system complies with

    • UL 61010-1, 3rd edition, May 11, 2012 (Electrical safety)
    • NFPA 496, 2013 and
    • ANSI/ISA 1212.01.

    The measuring system is integrated in a pressurized enclosure that is flushed with compressed air and is mounted on a mounting rack.

    Typical applications are flare gas combustion, gas turbine control, and fuel control in refineries and petrochemical plants.

    • Heating and combustion values
    • Wobbe-lndex
    • Specific density
    • CARI
    • Air Requirement


Operating manual Datasheet Certificate inquiry Calibration Spare parts


The CWD2005xxx-device series (Calorimetry, Wobbe-Index und Specific Density) comprises versions of combustion calorimeters for direct and continuous determination of gas quality from the following measurands and operands. Read more  here


UNION Instruments GmbH
Zeppelinstrasse 42
76185 Karlsruhe (Germany)
Fon +49 721 6803810
Fax +49 721 68038133

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Member of

PROFIBUS Nutzerorganisation e.V.
Hypos e.V.
Fachverband Biogas e.V.
Maritimes Cluster Norddeutschland e.V.
DWV German Hydrogen and Fuel Cell Association