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In-situ gas analyzers
GM35

For efficient control of combustion and drying processes

Your Benefits

  • Dynamic moisture measurement directly within the process
  • Provision of real moisture reference values
  • Accurate measured values thanks to in-situ measurement
  • Detects fast or transient process deviations
  • Representative measurement by selecting a suitable measuring probe or cross-duct version

Overview

For efficient control of combustion and drying processes

Simultaneous or as individual measurement: the GM35 gas analyzer measures CO2, H2O and CO, or N2O, as well temperature and pressure – and it does this reliably, quickly, and economically. As an in-situ gas analyzer, the GM35 detects these gas components directly in the gas stream without gas sampling. Reliability, precision, and short response time of the GM35 offer a key advantage for efficient control loops in all CO and CO2-generating processes.

At a glance
  • Dynamic humidity correction
  • Fast in-situ measurement directly in the process
  • Simultaneous determination of up to three gas components, temperature, and pressure
  • No gas sampling and conditioning
  • Gas testable version of measuring probe available
  • Integrated self-test and control functions

Accessories

spareparts

Applications

Technical overview

 

Please note: The exact device specifications and performance data of the product may deviate from the information provided here, and depend on the application in which the product is being used and the relevant customer specifications.

  • GM35 system

    GM35 system

    DescriptionIn-situ gas analyzer for emission monitoring and process measurement
    Measured valuesCO, CO2, H2O, N2O
    Performance-tested measurandsCO, CO2, H2O
    Measurement principlesGas filter correlation, Interference filter correlation
    Measuring ranges
    CO0 ... 180 ppm / 0 ... 20,000 ppm
    CO20 ... 22.5 Vol.-% / 0 ... 100 Vol.-%
    H2O0 ... 25 Vol.-% / 0 ... 100 Vol.-%
    N2O0 ... 60 ppm / 0 ... 2,500 ppm
    Measuring ranges refer to 1 m measuring path
    Measuring ranges depend on application and device version
    Certified measuring ranges
    CO0 ... 75 mg/m³ / 0 ... 2,000 mg/m³
    CO20 ... 15 Vol.-%
    H2O0 ... 25 Vol.-%
    The cross-duct and GMP versions have been type-approved
    Zero point drift
    ± 2 %: relative to measuring range end value
    Reference point drift
    ± 2 %: within the maintenance interval (6 months), relative to measuring range full scale
    Ambient temperature
    –20 °C ... +50 °C
    Temperature change maximum ±10 °C/h
    Storage temperature
    –40 °C ... +55 °C
    Ambient humidity
    ≤ 96 %
    Relative humidity; non-condensing
    ConformitiesEN 15267 (MCERTS)
    Electrical safetyCE
    Model

    Cross-duct version

    Measuring probe version

    Mounting

    Mounting flange, DN125, PN6

    Mounting flange, ANSI, 5″

    Test functionsAutomatic check cycle for zero and span point
    OptionsSCU control unit (for non-hazardous areas only)
  • Sender/receiver unit

    Sender/receiver unit

    DescriptionAnalyzer unit of the measuring system
    Electrical safetyCE
    Enclosure rating
    IP66 / NEMA 4x
    Dimensions (W x H x D)
    291 mm x 527 mm x 529 mm (for details see dimensional drawings)
    Weight
    29 kg
    Power supply
    Voltage115 V AC / 230 V AC
    Frequency48 ... 62 Hz
    Power consumption≤ 350 W
  • Open measuring probe (GMP)

    Open measuring probe (GMP)

    DescriptionMeasuring probe in open design with integrated purge air control system
    Measuring distance
    See dimensional drawings
    Accuracy
    Pressure sensor1 %
    Temperature sensor1 %
    Process temperature
    ≤ +430 °C
    With N2O measurement max. 180 °C
    Process pressure
    –60 hPa ... 30 hPa
    Depending on purge air supply
    Dust load
    ≤ 3 g/m³
    Based on a 1 m measuring distance, depending on application
    Electrical safetyCE
    Enclosure rating
    IP66
    Dimensions (W x H x D)
    Dimensions may vary. For details, see the dimensional drawings.
    Weight
    See dimensional drawings
    Material in contact with mediaStainless steel 1.4571, stainless steel 1.4539
    Power supply
    VoltageSupply via sender/receiver unit
    Auxiliary gas connections
    Purge airHose nozzle 40 mm
    Integrated components

    Pressure sensor

    PT1000 temperature sensor

    Flow monitor for purge air monitoring

  • Gas-testable measuring probe (GPP)

    Gas-testable measuring probe (GPP)

    DescriptionMeasuring probe with gas permeable filter element for adjustment with test gas
    Measuring distance
    See dimensional drawings
    Accuracy
    Pressure sensor1 %
    Temperature sensor1 %
    Process temperature
    ≤ +430 °C
    With N2O measurement max. 180 °C
    Process pressure
    –120 hPa ... 200 hPa
    Dust load
    ≤ 30 g/m³
    Electrical safetyCE
    Enclosure rating
    IP65
    Dimensions (W x H x D)
    Dimensions may vary. For details, see the dimensional drawings.
    Weight
    See dimensional drawings
    Material in contact with mediaStainless steel 1.4571, stainless steel 1.4539, ceramics, PTFE
    Power supply
    Voltage115 V AC / 230 V AC
    Frequency50 Hz / 60 Hz
    Power consumption≤ 150 W
    Auxiliary gas connections
    Test gasClamp connection 1/4″
    Integrated components

    Pressure sensor

    PT1000 temperature sensor

    Heating of optical surfaces

  • Reflector unit (cross-duct version)

    Reflector unit (cross-duct version)

    DescriptionReflector unit with hollow triple reflector
    Process temperature
    ≤ +500 °C
    With N2O measurement max. 180 °C
    Process pressure
    –60 hPa ... 30 hPa
    Depending on purge air supply
    Dust load
    ≤ 3 g/m³
    Based on a 1 m measuring distance, depending on application
    Electrical safetyCE
    Enclosure rating
    IP65
    Dimensions (W x H x D)
    291 mm x 280 mm x 161 mm (for details see dimensional drawings)
    Weight
    8.5 kg
  • AWE control unit; sheet steel housing

    AWE control unit; sheet steel housing

    DescriptionThe control unit serves as the human machine interface and is responsible for data processing and output as well as control and monitoring functions.
    Electrical safetyCE
    Enclosure rating
    IP65
    Analog outputs3 outputs:
    0/4 ... 20 mA, 500 Ω
    Electrically isolated
    Analog inputs1 input:
    0 ... 20 mA, 100 Ω
    Digital outputs3 relay contacts:
    48 V AC, 1 A, 60 W / 48 V DC, 1 A, 30 W
    Preset for failure, maintenance and functional control
    Digital inputs3 inputs:
    24 V
    Communication interface

    Serial

    CAN bus

    Type of fieldbus integrationRS-232
    FunctionProprietary service interface
    Internal system bus
    Number1
    Indication
    LC display
    Status LEDs: "Operation", "Service", "Warning" and "Malfunction"
    Input

    Arrow keys

    Functional keys

    OperationMenu-driven operation via LC-display and membrane keyboard
    ModelSteel sheet enclosure
    Dimensions (W x H x D)
    200 mm x 346 mm x 97.5 mm (for details see dimensional drawings)
    Weight
    4.7 kg
    Power supply
    Voltage115 V / 230 V
    Frequency50 Hz / 60 Hz
    Power consumption≤ 50 W
  • AWE control unit; cast metal enclosure

    AWE control unit; cast metal enclosure

    DescriptionThe control unit serves as the human machine interface and is responsible for data processing and output as well as control and monitoring functions.
    Electrical safetyCE
    Enclosure rating
    IP67
    Analog outputs3 outputs:
    0/4 ... 20 mA, 500 Ω
    Electrically isolated
    Analog inputs1 input:
    0 ... 20 mA, 100 Ω
    Digital outputs3 relay contacts:
    48 V AC, 1 A, 60 W / 48 V DC, 1 A, 30 W
    Preset for failure, maintenance and functional control
    Digital inputs3 inputs:
    24 V
    Communication interface

    Serial

    CAN bus

    Type of fieldbus integrationRS-232
    FunctionProprietary service interface
    Internal system bus
    Number1
    Indication
    LC display
    Status LEDs: "Operation", "Service", "Warning" and "Malfunction"
    Input

    Arrow keys

    Functional keys

    OperationMenu-driven operation via LC-display and membrane keyboard
    ModelCast metal enclosure
    Dimensions (W x H x D)
    289 mm x 370 mm x 138 mm (for details see dimensional drawings)
    Weight
    8.6 kg
    Power supply
    Voltage115 V / 230 V
    Frequency50 Hz / 60 Hz
    Power consumption≤ 50 W
  • Connection unit

    Connection unit

    DescriptionFor extending the internal CAN bus connection with a cable provided by the customer
    Electrical safetyCE
    Enclosure rating
    IP65
    Dimensions (W x H x D)
    125 mm x 103 mm x 57 mm (for details see dimensional drawings)
    Weight
    3 kg
  • Purge air fixture

    Purge air fixture

    DescriptionFlange fixture for connections for purge air hose, temperature and pressure sensor
    Electrical safetyCE
    Dimensions (W x H x D)
    309 mm x 364 mm x 242 mm (for details see dimensional drawings)
    Weight
    9.6 kg
    Auxiliary gas connections
    Purge airHose nozzle 40 mm
    Electrical connections

    Purge air unit low-pressure monitor

    PT1000 temperature sensor

    Pressure sensor

    Integrated components

    Flow monitor for purge air monitoring

    Pressure sensor

  • Pressure and temperature sensor (cross-duct version)

    Pressure and temperature sensor (cross-duct version)

    DescriptionPressure and temperature sensor with DN40 / PN40 mounting flange
    Accuracy
    Pressure sensor1 %
    Temperature sensor1 %
    Process temperature
    ≤ +500 °C
    Electrical safetyCE
    Dimensions (W x H x D)
    Dimensions may vary. For details, see the dimensional drawings.
    Immersion depth
    PT1000 temperature sensor500 mm
    1,000 mm
    1,400 mm
    MaterialStainless steel 1.4571, steel ST37
    Scope of delivery

    Connecting cable for temperature sensor, 5 m

    Connecting hose for pressure sensor, 5 m

    Flange cover, including seal and screws

  • SLV4-2 purge air unit, 2BH1300, 3-ph

    SLV4-2 purge air unit, 2BH1300, 3-ph

    DescriptionUnit to provide dust-free air for flushing of optical surfaces
    Gas flow rate
    38 m³/h ... 63 m³/h
    At 30 hPa counter pressure, depending on low pressure inside the filter
    Ambient temperature
    –40 °C ... +55 °C
    Electrical safetyCE
    Enclosure rating
    IP54
    Dimensions (W x H x D)
    550 mm x 550 mm x 258 mm (for details see dimensional drawings)
    Weight
    18 kg
    Power supply
    Three-phase currentΔ: 200 ... 240 V, 50 Hz, 2,6 A, 400 W
    Y: 345 ... 415 V, 50 Hz, 1,5 A, 400 W
    Δ: 200 ... 275 V, 60 Hz, 2,6 A, 500 W
    Y: 380 ... 480 V, 60 Hz, 1,5 A, 500 W
    Δ: 270 ... 330 V, 50 Hz, 2,0 A, 400 W
    Y: 465 ... 570 V, 50 Hz, 1,16 A, 400 W
    Δ: 290 ... 360 V, 60 Hz, 2,1 A, 500 W
    Y: 500 ... 600 V, 60 Hz, 1,26 A, 500 W
    Δ: 230 V, 50 Hz, 2,7 A, 370 W
    Δ: 115 V, 60 Hz, 3,0 A, 450 W
    Δ: 220 ... 270 V, 50 Hz, 2,5 A, 400 W
    Y: 380 ... 465 V, 50 Hz, 1,45 A, 400 W
    Δ: 240 ... 290 V, 60 Hz, 2,6 A, 500 W
    Y: 415 ... 500 V, 60 Hz, 1,55 A, 500 W
    Auxiliary gas connections
    Purge airHose nozzle 40 mm
    Test functionsPressure switch (switching point –35 hPa)
    Integrated components2-step air filter, type Europiclon, dust capacity 200 g
All technical data can be found accompanying the individual product

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