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In-situ gas analyzers
GM700

Efficient process analysis – even under difficult conditions

Your Benefits

  • In-situ measurement directly in the process for accurate measured values
  • Probe and cross-duct models to match the requirements of your measuring task perfectly
  • High reliability during operation
  • Can also be used in harsh ambient conditions
  • Detects quick and short-term process fluctuations

Overview

Efficient process analysis – even under difficult conditions

High reliability and precision as well as minimal response times are the distinguishing features of the GM700 laser gas analyzer. Based on the principle of TDLS (Tunable Diode Laser Spectroscopy) and by using specific light absorption, the GM700 is able to measure several gas components, such as NH3, HF, HCl or H2O. The in-situ measurement is ideal for the fast determination of gas concentrations in process control and emission monitoring.

At a glance
  • High selectivity due to high spectral resolution
  • Short response times
  • No calibration required
  • No moving parts: minimal wear and tear
  • No gas sampling or conditioning required
  • Overpressure encapsulated design for ATEX Zone 2

Accessories

Applications

Service & Support

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.

  • System GM700, standard version

    System GM700, standard version

    Measured valuesNH3, HF, HCl, H2O
    Performance-tested measurandsHF
    Measurement principlesDiode laser spectroscopy (TDLS)
    Length of measuring path
    Cross-duct version0.5 m ... 6 m
    Depending on application
    Open measuring probe (GMP)0.25 m ... 1.5 m
    Depending on application
    Gas-testable measuring probe (GPP)0.227 m ... 0.977 m
    Depending on application
    Measuring ranges
    NH30 ... 25 ppm / 0 ... 4,000 ppm
    NH3 hohe Feuchte0 ... 25 ppm / 0 ... 100 ppm
    HF0 ... 5 ppm / 0 ... 2,000 ppm
    HCl0 ... 10 ppm / 0 ... 3,000 ppm
    Measuring ranges refer to 1 m measuring path
    Measuring ranges depend on application and device version
    Dual measuring ranges
    HCl / H2O0 ... 10 ppm / 0 ... 3,000 ppm (HCl)
    0 ... 50 Vol.-% / 0 ... 100 Vol.-% (H2O)
    NH3 / H2O0 ... 25 ppm / 0 ... 4,000 ppm (NH3)
    0 ... 20 Vol.-% / 0 ... 20 Vol.-% (H2O)
    NH3 / H2O high humidity0 ... 25 ppm / 0 ... 100 ppm (NH3)
    0 ... 40 Vol.-% / 0 ... 40 Vol.-% (H2O high humidity)
    Measuring ranges refer to 1 m measuring path
    Measuring ranges depend on application and device version
    Certified measuring ranges
    HF0 ... 5 mg/m³ / 0 ... 25 mg/m³
    Suitability-tested in the cross-duct type
    Response time (t90)
    Standard1 s ... 360 s
    Adjustable, preset to 4 s
    HF measurement1 s ... 180 s
    Adjustable, preset to 4 s
    Accuracy
    Zero point≤ ± 2 %
    Relative to measuring range end value
    Sensitivity≤ ± 2 %
    Within the maintenance interval (6 months), relative to measuring range full scale
    Process temperature
    –40 °C ... +430 °C
    Depending on device version
    Ambient temperature
    –40 °C ... +50 °C
    Depends on parameterization; temperature change max. ±10 °C/h
    Storage temperature
    –40 °C ... +55 °C
    Ambient humidity
    ≤ 85 %
    Relative humidity; non-condensing
    Conformities

    Only for HF

    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

    Electrical safetyCE
    Enclosure rating
    IP65
    Mounting

    Mounting flange, DN125, PN6

    Mounting flange, ANSI, 5″

    Test functionsAutomatic check cycle for zero and span point (only for NH3 and HCl)
  • System GM700; Ex-version

    System GM700; Ex-version

    Measured valuesNH3, H2O
    Measurement principlesDiode laser spectroscopy (TDLS)
    Length of measuring path
    Cross-duct version0.5 m ... 6 m
    Depending on application
    Open measuring probe (GMP)0.25 m ... 1.5 m
    Depending on application
    Gas-testable measuring probe (GPP)0.227 m ... 0.977 m
    Depending on application
    Measuring ranges
    NH30 ... 25 ppm / 0 ... 4,000 ppm
    Measuring ranges refer to 1 m measuring path
    Measuring ranges depend on application and device version
    Dual measuring ranges
    NH3 / H2O0 ... 25 ppm / 0 ... 4,000 ppm (NH3)
    0 ... 20 Vol.-% / 0 ... 20 Vol.-% (H2O)
    Measuring ranges refer to 1 m measuring path
    Measuring ranges depend on application and device version
    Response time (t90)
    Standard1 s ... 360 s
    Adjustable, preset to 4 s
    HF measurement1 s ... 180 s
    Adjustable, preset to 4 s
    Accuracy
    Zero point≤ ± 2 %
    Relative to measuring range end value
    Sensitivity≤ ± 2 %
    Within the maintenance interval (6 months), relative to measuring range full scale
    Process temperature
    –20 °C ... +200 °C
    Depending on version
    Ambient temperature
    –20 °C ... +50 °C
    Depends on parameterization; temperature change max. ±10 °C/h
    Storage temperature
    –20 °C ... +50 °C
    Ambient humidity
    ≤ 85 %
    Relative humidity; non-condensing
    Ex-approvals
    ATEXII 3/-G Ex pzc op is [ia] IIC T4 Gc/-
    Electrical safetyCE
    Enclosure rating
    IP65
    Mounting

    Mounting flange, DN125, PN6

    Mounting flange, ANSI, 5″

    Test functionsAutomatic check cycle for zero and span point
  • Sender/receiver unit; standard and Ex-version

    Sender/receiver unit; standard and Ex-version

    DescriptionAnalyzer unit of the measuring system
    Enclosure rating
    IP65
    Dimensions (W x H x D)
    Standard version239 mm x 316 mm x 338 mm
    Ex-version239 mm x 401 mm x 338 mm
    Weight
    Standard version13 kg
    Ex-version14 kg
    Power supply
    VoltageSupply via control unit: 24 V DC
    Current consumption≥ 1.5 A
    Auxiliary gas connections
    Test gasSwagelok 1/4″
    Purge gasSwagelok 1/4″
  • Open measuring probe (GMP)

    Open measuring probe (GMP)

    DescriptionMeasuring probe in open design with integrated purge air control system
    Process temperature
    Standard version≤ +250 °C
    With heated flushing air
    Ex-version≤ +200 °C
    Process pressure
    Depending on purge air supply
    Process gas humidity
    Non-condensing
    Enclosure rating
    IP65
    Weight
    See dimensional drawings
    Material in contact with mediaStainless steel 1.4571, stainless steel 1.4539
    Power supply
    VoltageSupply via control unit: 24 V DC
    Integrated components

    Flow monitor (monitoring of purge air feed)

    PT1000 temperature sensor (not for Ex-version)

    Pressure 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
    Process temperature
    HCl+130 °C ... +430 °C
    NH3+300 °C ... +430 °C
    Process pressure
    120 hPa
    Enclosure rating
    IP65
    Weight
    See dimensional drawings
    Material in contact with mediaStainless steel 1.4571, stainless steel 1.4539, ceramics, PTFE
    Power supply
    Voltage150 V / 230 V
    Frequency50 Hz / 60 Hz
    Power consumption≤ 150 W
    Integrated components

    PT1000 temperature sensor (measurement of gas temperature)

    Pressure sensor

    Heating of optical interfaces

  • Reflector unit (cross-duct version)

    Reflector unit (cross-duct version)

    DescriptionReflector unit with hollow triple reflector
    Process temperature
    ≤ +250 °C
    With heated flushing air
    Process gas humidity
    Non-condensing
    Enclosure rating
    IP65
    Dimensions (W x H x D)
    291 mm x 280 mm x 161 mm
    Weight
    8.3 kg
    Power supply
    Voltage24
    Current consumption1.5 A
  • GM700 control unit; sheet steel housing

    GM700 control unit; sheet steel housing

    DescriptionThe control unit serves as the HMI and is responsible for data processing, data output, and control and monitoring functions
    Enclosure rating
    IP65 / NEMA 4x
    Analog outputs3 outputs:
    0/4 ... 20 mA, 500 Ω
    Electrically isolated
    Analog inputs2 inputs:
    0 ... 20 mA, 100 Ω
    For gas temperature and gas pressure
    Digital outputs3 relay contacts:
    + 48 V AC, 1 A, 60 W / 48 V DC, 1 A, 30 W
    Digital inputs3 inputs:
    + 24 V
    Serial
    Type of fieldbus integrationRS-232
    FunctionProprietary service interface
    PROFIBUS DP
    RemarkOnly for HF
    CAN bus
    FunctionInternal system bus
    Indication
    LC display
    Status LEDs: "Operation", "Service", "Warning" and "Malfunction"
    Input

    Arrow keys

    Functional keys

    ModelSteel sheet enclosure
    Dimensions (W x H x D)
    200 mm x 346 mm x 97.5 mm
    Weight
    ≤ 4.7 kg
    Power supply
    Voltage115 V / 230 V
    Frequency50 Hz / 60 Hz
    Power consumption≤ 50 W
  • GM700 control unit; cast metal housing

    GM700 control unit; cast metal housing

    DescriptionThe control unit serves as the HMI and is responsible for data processing, data output, and control and monitoring functions
    Enclosure rating
    IP67 / NEMA 6
    Analog outputs3 outputs:
    0/4 ... 20 mA, + 500 Ω
    Electrically isolated
    Analog inputs2 inputs:
    0 ... 20 mA, 100 Ω
    For gas temperature and gas pressure
    Digital outputs3 relay contacts:
    + 48 V AC, 1 A, 60 W / 48 V DC, 1 A, 30 W
    Digital inputs3 inputs:
    + 24 V
    Serial
    Type of fieldbus integrationRS-232
    FunctionProprietary service interface
    PROFIBUS DP
    RemarkOnly for HF
    CAN bus
    FunctionInternal system bus
    Indication
    LC display
    Status LEDs: "Operation", "Service", "Warning" and "Malfunction"
    Input

    Arrow keys

    Functional keys

    ModelCast metal enclosure
    Dimensions (W x H x D)
    289 mm x 370 mm x 138 mm
    Weight
    ≤ 8.6 kg
    Power supply
    Voltage115 V / 230 V
    Frequency50 Hz / 60 Hz
    Power consumption≤ 50 W
  • GM700-EX3G control unit

    GM700-EX3G control unit

    DescriptionThe control unit serves as the HMI and is responsible for data processing, data output, and control and monitoring functions
    Enclosure rating
    IP65
    Analog outputs3 outputs:
    0/4 ... 20 mA, + 500 Ω
    Electrically isolated
    Analog inputs2 inputs:
    0 ... 20 mA, 100 Ω
    For gas temperature and gas pressure
    Digital outputs3 relay contacts:
    + 48 V AC, 1 A, 60 W / 48 V DC, 1 A, 30 W
    Digital inputs3 inputs:
    + 24 V
    Serial
    Type of fieldbus integrationRS-232
    FunctionProprietary service interface
    Indication
    LC display
    Status LEDs: "Operation", "Service", "Warning" and "Malfunction"
    Input

    Arrow keys

    Functional keys

    ModelSteel sheet enclosure
    Dimensions (W x H x D)
    Evaluation unit300 mm x 483 mm x 138 mm
    Ex pz control unit FS840 (pressurization)129 mm x 122 mm x 120 mm
    Weight
    ≤ 16 kg
    Power supply
    Voltage230 V
    Frequency50 Hz
    Power consumption≤ 75 W
  • Connection unit

    Connection unit

    DescriptionFor extending the internal CAN bus connection with a cable provided by the customer
    Dimensions (W x H x D)
    175 mm x 110.5 mm x 175 mm
    Weight
    3 kg
    Power supply
    Voltage115 V / 230 V
    Frequency50 Hz / 60 Hz
    Integrated componentsOn-board 24 V power supply for the sender/receiver unit
  • Purge air fixture

    Purge air fixture

    DescriptionFixture to flanges with connections for purge air hose and temperature sensor
    Dimensions (W x H x D)
    334 mm x 364 mm x 242 mm
    For details see dimensional drawings
    Weight
    7 kg
    Auxiliary gas connections
    Purge airHose nozzle 40 mm
    Electrical connections

    Flow monitor

    PT1000 temperature sensor

  • Purge air attachment, Ex version, passive

    Purge air attachment, Ex version, passive

    DescriptionFixture to flanges with connections for purge air hose and temperature sensor
    Dimensions (W x H x D)
    254 mm x 269 mm x 242 mm
    For details see dimensional drawings
    Weight
    7 kg
    Auxiliary gas connections
    Purge airHose nozzle 40 mm
  • 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
    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
All technical data can be found accompanying the individual product

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