In-situ gas analyzers
GM35
Your Benefits
- Dynamic humidity measurement directly in the process
- Provision of real humidity reference values
- Unbiased measuring values due to in-situ measurement
- Fast or short-term fluctuations in the process are being detected
- Representative measurement by selection of an appropriate probe or cross-duct type
Overview
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.
- 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
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.
- 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.-% Cross-duct and GMP version are 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 –40 °C ... +55 °C
Temperature change maximum ±10 °C/hStorage temperature –40 °C ... +55 °C Ambient humidity ≤ 96 %
Relative humidity; bedewing of optical surfaces not permittedConformities 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
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 Enclosure rating IP65 / NEMA 4x Dimensions (W x H x D) 291 mm x 527 mm x 529 mm 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 Process temperature ≤ +430 °C
With N2O measurement max. 180 °CProcess pressure ≤ 120 hPa
Depending on purge air supplyProcess gas velocity ≤ 40 m/s Dust load ≤ 3 g/m³ Weight See dimensional drawings Material in contact with media Stainless steel 1.4571, stainless steel 1.4539 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 Process temperature ≤ +430 °C
With N2O measurement max. 180 °CProcess pressure ≤ 250 hPa
Depending on purge air supplyProcess gas velocity ≤ 40 m/s Dust load ≤ 30 g/m³ 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 Integrated components Pressure sensor
PT1000 temperature sensor
- Reflector unit
Reflector unit
Description Reflector unit with hollow triple reflector Process temperature ≤ +500 °C
With N2O measurement max. 180 °CProcess pressure Depending on purge air supply Dimensions (W x H x D) 291 mm x 280 mm x 161 mm 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 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: "Power", "Maintenance" and "Failure" 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 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 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: "Power", "Maintenance" and "Failure" 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 Weight ≤ 8.6 kg Power supply Voltage 115 V / 230 V Frequency 50 Hz / 60 Hz Power consumption ≤ 50 W
- MCU100 control unit
MCU100 control unit
Description The control unit serves as the user interface and is responsible for data processing and output as well as control and monitoring functions. Ambient temperature –25 °C ... +55 °C
Temperature change maximum ±10 °C/hStorage temperature –25 °C ... +55 °C
Temperature change maximum ±10 °C/hAmbient humidity ≤ 100 %
Non-condensingConformities EN 15267
EN 14181
VDI 4201-1
VDI 4201-3
Electrical safety CE Enclosure rating IP65 / NEMA 4x Analog outputs 1 output:
0/4 ... 22 mA, + 600 Ω
The number depends on which I/O modules are selectedAnalog inputs 1 inputs:
0/4 ... 22 mA, 100 Ω
The number depends on which I/O modules are selectedDigital outputs 1 relay contacts:
48 V AC, 1 A / 48 V DC, 1 A
The number depends on which I/O modules are selectedDigital inputs 1 inputs:
1.5 V / 30 V
The number depends on which I/O modules are selectedModbus ✔ Type of fieldbus integration RTU RS-485 TCP/IP PROFIBUS DP ✔ Type of fieldbus integration RS-485 Ethernet ✔ Function Connection to SOPAS ET software or OPC server Indication LC display Status LEDs: "Operation", "Warning" and "Failure" Input Functional keys Operation Via LC display, SPOASair app or SOPAS ET software, multiple operating levels, password-protected Calculation interval 1 s Menu languages German, English, French, Spanish, Italian, Portugese, Russian, Chinese, Japanese Data archives Optional data archives for measured value or QAL3 Logbooks Parameter
Service
Device state
Model Wall mounting enclosure Dimensions (W x H x D) Wall mounting enclosure 210 mm x 365 mm x 135 mm Weight Wall mounting enclosure 4.5 kg Material Stainless steel 1.4016 (AISI 430) Power supply Voltage 88 ... 264 V AC Frequency 47 ... 63 Hz Current consumption ≤ 2 A Power consumption ≤ 75 W
- Connection unit
Connection unit
Description For extending the internal CAN bus connection with a cable provided by the customer Dimensions (W x H x D) 125 mm x 103 mm x 57 mm Weight 3 kg
- Purge air fixture; sender/receiver unit
Purge air fixture; sender/receiver unit
Description Fixture to flanges with connections for purge air and external cabelling Dimensions (W x H x D) 320.9 mm x 360 mm x 220 mm Weight 7 kg Auxiliary gas connections Integrated components PT1000 temperature sensor
Pressure sensor
- Purge air fixture; reflector unit
Purge air fixture; reflector unit
Description Fixture to flanges with connections for purge air and external cabelling Dimensions (W x H x D) 320.9 mm x 360 mm x 220 mm Weight 7 kg Auxiliary gas connections
- 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 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 40 mm Test functions Pressure switch (switching point –35 hPa) Integrated components 2-step air filter, type Europiclon, dust capacity 200 g