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
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
Measured values CO, CO2, H2O, N2O Performance-tested measurands CO, CO2, H2O Measurement principles Gas filter correlation, Interference filter correlation Measuring ranges CO 0 ... 180 ppm / 0 ... 20,000 ppm N2O 0 ... 60 ppm / 0 ... 2,500 ppm CO2 0 ... 22.5 Vol.-% / 0 ... 100 Vol.-% H2O 0 ... 25 Vol.-% / 0 ... 100 Vol.-% Measuring ranges refer to 1 m measuring path Measuring ranges depend on application and device version Certified measuring ranges CO 0 ... 75 mg/m³ / 0 ... 2,000 mg/m³ CO2 0 ... 15 Vol.-% H2O 0 ... 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, relative to measuring range full scale Ambient temperature –20 °C ... +50 °C
Temperature change maximum ±10 °C/hStorage temperature –40 °C ... +55 °C Ambient humidity ≤ 96 %
Relative humidity; bedewing of optical surfaces not permittedConformities EN 15267 (MCERTS)
MCERTS
Electrical safety CE Enclosure rating IP65 / NEMA 4x Operation Menu-driven operation via separate control unit Model Cross-duct version
Measuring probe version
Mounting Mounting flange, DN125, PN6
Mounting flange, ANSI, 5″
Test functions Automatic check cycle for zero and span point
- Sender/receiver unit
Sender/receiver unit
Description Analyzer unit of the measuring system Electrical safety CE Enclosure rating IP65 / 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 Voltage 115 V AC / 230 V AC Frequency 48 ... 62 Hz Power consumption ≤ 350 W
- Open measuring probe (GMP)
Open measuring probe (GMP)
Description Measuring probe in open design with integrated purge air control system Accuracy Pressure sensor 1 % Temperature sensor 1 % Process temperature ≤ +430 °C
With N2O measurement max. 180 °CProcess pressure –60 hPa ... 60 hPa
Depending on purge air supplyDust load ≤ 3 g/m³
Based on a 1 m measuring distance, depending on applicationElectrical safety CE Dimensions (W x H x D) Dimensions may vary. For details, see the dimensional drawings. Weight See dimensional drawings Material in contact with media Stainless steel 1.4571, stainless steel 1.4539 Power supply Voltage 24 V DC Supply via control unit Auxiliary gas connections Purge air Hose nozzle 40 mm Integrated components Pressure sensor
PT1000 temperature sensor
- Gas-testable measuring probe (GPP)
Gas-testable measuring probe (GPP)
Description Measuring probe with gas permeable filter element for adjustment with test gas Accuracy Pressure sensor 1 % Temperature sensor 1 % Process temperature ≤ +430 °C
With N2O measurement max. 180 °CProcess pressure –60 hPa ... 200 hPa Dust load ≤ 30 g/m³
Based on a 1 m measuring distance, depending on applicationElectrical safety CE Dimensions (W x H x D) Dimensions may vary. For details, see the dimensional drawings. Weight See dimensional drawings Material in contact with media Stainless steel 1.4571, stainless steel 1.4539, ceramics, PTFE Power supply Voltage 115 V AC / 230 V AC Frequency 50 Hz / 60 Hz Power consumption ≤ 150 W Auxiliary gas connections Test gas Swagelok 1/4″ Integrated components Pressure sensor
PT1000 temperature sensor
- Reflector unit (cross-duct version)
Reflector unit (cross-duct version)
Description Reflector unit with hollow triple reflector Process temperature ≤ +500 °C
With N2O measurement max. 180 °CProcess pressure –60 hPa ... 60 hPa
Depending on purge air supplyElectrical safety CE Dimensions (W x H x D) 291 mm x 280 mm x 161 mm (for details see dimensional drawings) Weight 9 kg
- GM35 control unit; sheet steel housing
GM35 control unit; sheet steel housing
Description The control unit serves as the HMI and is responsible for data processing, data output, and control and monitoring functions Electrical safety CE Enclosure rating IP65 / NEMA 4x Analog outputs 3 outputs:
0/4 ... 20 mA, + 500 Ω
Electrically isolatedAnalog inputs 1 input:
0 ... 20 mA, 100 ΩDigital outputs 3 relay contacts:
+ 48 V AC, 1 A, 60 W / 48 V DC, 1 A, 30 W
Preset for failure, maintenance and functional controlDigital inputs 3 inputs:
+ 24 VSerial ✔ Type of fieldbus integration RS-232 Function Proprietary service interface, connection to SOPAS ET software CAN bus ✔ Function Internal system bus Indication LC display Status LEDs: "Operation", "Service", "Warning" and "Malfunction" Input Arrow keys
Functional keys
Operation Menu-driven operation via LC-display and membrane keyboard Model Steel 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 Voltage 115 V / 230 V Frequency 50 Hz / 60 Hz Power consumption ≤ 50 W
- GM35 control unit; cast metal housing
GM35 control unit; cast metal housing
Description The control unit serves as the HMI and is responsible for data processing, data output, and control and monitoring functions Electrical safety CE Enclosure rating IP67 Analog outputs 3 outputs:
0/4 ... 20 mA, + 500 Ω
Electrically isolatedAnalog inputs 1 input:
0 ... 20 mA, 100 ΩDigital outputs 3 relay contacts:
+ 48 V AC, 1 A, 60 W / 48 V DC, 1 A, 30 W
Preset for failure, maintenance and functional controlDigital inputs 3 inputs:
+ 24 VSerial ✔ Type of fieldbus integration RS-232 Function Proprietary service interface, connection to SOPAS ET software CAN bus Function Internal system bus Indication LC display Status LEDs: "Operation", "Service", "Warning" and "Malfunction" Input Arrow keys
Functional keys
Operation Menu-driven operation via LC-display and membrane keyboard Model Cast 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 Voltage 115 V / 230 V Frequency 50 Hz / 60 Hz Power consumption ≤ 50 W
- Connection unit
Connection unit
Description For extending the internal CAN bus connection with a cable provided by the customer Electrical safety CE 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
Description Fixture to flanges with connections for purge air hose and temperature sensor Electrical safety CE Dimensions (W x H x D) 320.9 mm x 360 mm x 220 mm (for details see dimensional drawings) Weight 7 kg Auxiliary gas connections Purge air Hose nozzle 40 mm Electrical connections Flow monitor
PT1000 temperature sensor
- Pressure and temperature sensor (cross-duct version)
Pressure and temperature sensor (cross-duct version)
Description Pressure and temperature sensor with DN40 / PN40 mounting flange Process temperature ≤ +500 °C Electrical safety CE Dimensions (W x H x D) Dimensions may vary. For details, see the dimensional drawings. Immersion depth PT1000 temperature sensor 500 mm 1,000 mm 1,400 mm Material Stainless 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
Description Unit 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 filterAmbient temperature –40 °C ... +55 °C Electrical safety CE 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 current Δ: 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 air Hose nozzle 40 mm Test functions Pressure switch (switching point –35 hPa) Integrated components 2-step air filter, type Europiclon, dust capacity 200 g