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In-situ gas analyzers
GM32

Measure aggressive gases directly and quickly – even in ATEX zones

Your Benefits

  • Unaltered measured values in real time without altering the gas composition
  • Short-term process deviations are detected
  • Representative measurement by selection of cross-duct or measuring probe type
  • Fast on-site service due to modular design
  • Long maintenance-free intervals
  • Cost-effective in-situ gas analyzer — ATEX type also available
  • Low cost of installation and operation, no test gases required
  • Complete emissions measurement in kraft pulp process by way of simultaneous measurement of TRS components plus SO2, NO, NH33

Overview

Measure aggressive gases directly and quickly – even in ATEX zones

The GM32 in-situ gas analyzer measures SO2, NO, NO2 and NH3, as well as TRS components in Kraft pulp processes including pressure and temperature in the gas duct. Direct, fast and without gas sampling and transport. This means control systems are able to work with actual values in real time. Thanks to self-monitoring the measured value are reliable at any time. In case of a malfunction an early warning will be shown. For emission measurement of SO2 and NO, GM32 is tested for suitability according to European standard EN 15267. An ATEX version with comprehensive safety functions and sophisticated system technology is also available, as well as the GM32 TRS-PE (PE = Pulp Emission) for TRS measurement in Kraft pulp processes.

At a glance
  • Direct, fast in-situ measurement
  • No gas sampling, no gas transport, no gas conditioning
  • Up to eight measuring components at the same time, plus process temperature and pressure
  • DOAS and CDE evaluation process
  • Numerous independent measuring ranges with consistent accuracy
  • Automatic self-test function (QAL3) without test gases
  • Overpressure encapsulated design for ATEX Zones 1 and 2

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.

  • GM32 system; standard and Ex-version

    GM32 system; standard and Ex-version

    DescriptionIn-situ gas analyzer for emission monitoring and process measurement
    Measured valuesNO, NO2, NH3, SO2
    Performance-tested measurandsNO, SO2
    Measurement principlesDifferential optical absorption spectroscopy (DOAS)
    Measuring ranges
    NH30 ... 30 ppm / 0 ... 2,600 ppm
    NO0 ... 40 ppm / 0 ... 1,900 ppm
    NO20 ... 50 ppm / 0 ... 1,000 ppm
    LowNO20 ... 20 ppm / 0 ... 1,000 ppm
    SO20 ... 32 ppm / 0 ... 7,000 ppm
    Measuring ranges refer to 1 m measuring path
    Measuring ranges depend on application and device version
    Certified measuring ranges
    NO0 ... 70 mg/m³ / 0 ... 700 mg/m³ / 0 ... 1,302 mg/m³
    SO20 ... 75 mg/m³ / 0 ... 1,000 mg/m³ / 0 ... 2,500 mg/m³
    With an active measuring path length of 1.86 m (cross- duct), 1.25 m (open path measuring probe) or 1 m (open path measuring probe, LowNO2)
    The gas-testable measuring probe (GPP) is not TUV approved
    Response time (t90)
    Open measuring probe (GMP)≥ 5 s
    Gas-testable measuring probe (GPP)≥ 120 s
    Cross-duct version≥ 5 s
    Response time adjustable
    Accuracy
    NH3± 2 %
    NO± 2 %
    NO2± 2 %
    SO2± 2 %
    Relative to the smallest measuring range
    Ambient temperature
    –20 °C ... +55 °C
    Temperature change maximum ±10 °C/h
    Storage temperature
    –20 °C ... +55 °C
    Temperature change maximum ±10 °C/h
    Ambient humidity
    ≤ 95 %
    Relative humidity; non-condensing
    Conformities

    Approved for plants requiring approval

    2001/80/EC (13. BImSchV)

    2000/76/EC (17. BImSchV)

    27. BImSchV

    TA-Luft (Prevention of Air Pollution)

    EN 15267

    EN 14181

    MCERTS

    GOST

    Ex-approvals
    IECExEx pzc op is [ia] IIC T3 Gc
    ATEXII 3G Ex pzc op is [ia] IIC T3 Gc
    Electrical safetyCE
    Mounting

    Mounting flange, DN125, PN6

    Mounting flange, ANSI, 5″

    Test functions

    Internal zero point check

    Check cycle for zero and span point according to QAL3

    Options

    SCU control unit (for non-hazardous areas only)

    Multi range calibration (additional measuring ranges for one component)

    Extended gas temperature range up to 550 °C or 650 °C

    LowNO2

  • GM32 TRS–PE system

    GM32 TRS–PE system

    DescriptionIn-situ gas analyzer for TRS monitoring in the Kraft pulping process
    Measured valuesNO, NH3, SO2, CH3SH, (CH3)2S, (CH3)2S2, H2S, TRS
    Measurement principlesChemometrical data evaluation (CDE)
    Measuring ranges
    NH30 ... 35 ppm / 0 ... 50 ppm
    NO0 ... 40 ppm / 0 ... 150 ppm
    SO20 ... 15 ppm / 0 ... 35 ppm
    H2S0 ... 35 ppm
    CH3SH0 ... 25 ppm
    (CH3)2S0 ... 20 ppm
    (CH3)2S20 ... 15 ppm
    TRS0 ... 70 ppm
    Measuring ranges refer to 1 m measuring path
    Measuring ranges depend on application and device version
    TRS = H2S + CH3SH (as H2S equivalent)
    For device variant 7: TRS = H2S + CH3SH + (CH3)2S + 2x (CH3)2S2
    Other measuring ranges on request
    Response time (t90)
    Gas-testable measuring probe (GPP)≥ 120 s
    Response time adjustable
    Accuracy
    NH3± 2 %
    NO± 2 %
    SO2± 0.3 ppm ... ± 2 %
    H2S± 2 %
    CH3SH± 2 %
    (CH3)2S± 2 %
    (CH3)2S2± 2 %
    TRS± 2 %
    Relative to the smallest measuring range
    Ambient temperature
    –20 °C ... +55 °C
    Temperature change maximum ±10 °C/h
    For device variant 7+20 °C ... +30 °C
    Storage temperature
    –20 °C ... +55 °C
    Temperature change maximum ±10 °C/h
    Ambient humidity
    ≤ 95 %
    Relative humidity; non-condensing
    Electrical safetyCE
    Mounting

    Mounting flange, DN125, PN6

    Mounting flange, ANSI, 5″

    Test functionsInternal zero and reference point check
    OptionsSCU control unit
  • Sender/receiver unit; standard version

    Sender/receiver unit; standard version

    DescriptionAnalyzer unit of the measuring system
    Electrical safetyCE
    Enclosure rating
    IP65 / IP69K
    OperationVia integrated control unit
    Dimensions (W x H x D)
    315 mm x 580 mm x 359 mm (for details see dimensional drawings)
    Weight
    20 kg
    Power supply
    Voltage24 V DC
    VoltageSupply via connection unit
    Power consumption36 W
  • Sender/receiver unit; Ex-version

    Sender/receiver unit; Ex-version

    DescriptionAnalyzer unit of the measuring system
    Electrical safetyCE
    Enclosure rating
    IP65 / IP69K
    OperationVia integrated control unit
    Dimensions (W x H x D)
    315 mm x 910 mm x 410 mm (for details see dimensional drawings)
    Weight
    20 kg
    Power supply
    Voltage24 V DC
    VoltageSupply via connection unit
    Power consumption36 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
    ≤ +550 °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
    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

    Flow monitor for purge air monitoring

    Pressure sensor (Not for Ex-version)

    PT1000 temperature sensor (not for Ex-version)

  • 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
    With ceramic filter≤ +430 °C
    Brief (max. 30 min.) up to 550 °C. At temperatures higher than 430 °C, reliable output of measured values can no longer be guaranteed.
    NH3 measurement with ceramic filter+300 °C ... +430 °C
    With Teflon filter≤ +200 °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

    Reflector unit

    DescriptionReflector unit with glass triple reflector
    Process temperature
    ≤ +650 °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 / IP69K
    Dimensions (W x H x D)
    291 mm x 280 mm x 161 mm (for details see dimensional drawings)
    Weight
    8.5 kg
  • Connection unit; standard version

    Connection unit; standard version

    DescriptionServes for connection of power supply, data and signal cabling provided by the customer
    Electrical safetyCE
    Enclosure rating
    IP65 / IP69K
    Analog outputs2 outputs:
    0/4 ... 22 mA, 500 Ω
    Per module, extendable up to eight outputs
    Analog inputs2 inputs:
    0/4 ... 22 mA, 100 Ω
    Digital outputs4 outputs:
    48 V AC/DC, 0.5 A, 25 W
    Digital inputs4 inputs:
    3.9 V, 4.5 mA, 0.55 W
    Per module, extendable up to eight inputs
    Communication interface

    Modbus

    CAN bus

    Ethernet

    Type of fieldbus integrationTCP
    RTU RS-485 (via optional interface module)
    FunctionInternal system bus
    Connection to SOPAS ET software or OPC server
    Number1
    Dimensions (W x H x D)
    450 mm x 424 mm x 158 mm (for details see dimensional drawings)
    Weight
    16 kg
    Power supply
    Voltage100 ... 250 V AC
    Frequency50 Hz / 60 Hz
    Power consumption≤ 260 W
  • Connection unit; Ex-version

    Connection unit; Ex-version

    DescriptionServes for connection of power supply, data and signal cabling provided by the customer
    Electrical safetyCE
    Enclosure rating
    IP65 / IP69K
    Analog outputs2 outputs:
    0/4 ... 22 mA, 500 Ω
    Per module, extendable up to eight outputs
    Analog inputs2 inputs:
    0/4 ... 22 mA, 100 Ω
    Digital outputs4 outputs:
    48 V AC/DC, 0.5 A, 25 W
    Digital inputs4 inputs:
    3.9 V, 4.5 mA, 0.55 W
    Per module, extendable up to eight inputs
    Communication interface

    Modbus

    CAN bus

    Ethernet

    Type of fieldbus integrationTCP
    RTU RS-485 (via optional interface module)
    FunctionInternal system bus
    Connection to SOPAS ET software or OPC server
    Number1
    Dimensions (W x H x D)
    679 mm x 630 mm x 158 mm (for details see dimensional drawings)
    Weight
    16 kg
    Power supply
    Voltage100 ... 230 V AC
    Frequency50 Hz / 60 Hz
    Power consumption≤ 260 W
  • Purge air fixture; sender/receiver unit

    Purge air fixture; sender/receiver unit

    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

  • Purge air fixture; reflector unit

    Purge air fixture; reflector unit

    DescriptionFlange fixture for connections for purge air hose and purge air monitoring
    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 connectionsPurge air unit low-pressure monitor
    Integrated componentsFlow monitor for purge air monitoring
  • 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 air40 mm
    Test functionsPressure switch (switching point –35 hPa)
    Integrated components2-step air filter, type Europiclon, dust capacity 200 g
  • SLV6-1 purge air unit, 2SH1300, ATEX 3G

    SLV6-1 purge air unit, 2SH1300, ATEX 3G

    DescriptionUnit to provide dust-free air for flushing of optical surfaces; for potentially explosive atmospheres
    Gas flow rate
    38 m³/h ... 63 m³/h
    At 30 hPa counter pressure, depending on low pressure inside the filter
    Ambient temperature
    –20 °C ... +40 °C
    Ex-approvals
    ATEXEx II 3G c T3
    Electrical safetyCE
    Enclosure rating
    IP54
    Dimensions (W x H x D)
    550 mm x 681 mm x 287 mm (for details see dimensional drawings)
    Weight
    28 kg
    Power supply
    Three-phase current3-phase: 230 V/400 V, 50 Hz
    3-phase: 460 V, 60 Hz
    Auxiliary gas connections
    Purge air40 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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