Your Benefits
- Measurement results in real time due to in-situ measurement
- Fast and simple installation and commissioning
- Easy, user-friendly operation
- Economical due to low maintenance

The GM901 gas analyzer is available as a cross-duct or probe type. As a result, it is suited to a broad range of applications – even for difficult measuring tasks such as high dust loads, overpressure, critical flow profiles, or high measuring gas concentrations.
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.
Description | Cross-duct version | ||||||
Measured values | CO | ||||||
Measurement principles | Gas filter correlation | ||||||
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Conformities | TUEV type-examination | ||||||
Electrical safety | CE | ||||||
Mounting | Mounting flange, DN125, PN6 Mounting flange, ANSI, 5″ | ||||||
Test functions | Manual span check with gas-filled cell |
Description | Measuring probe version | ||||||
Measured values | CO | ||||||
Measurement principles | Gas filter correlation | ||||||
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Conformities | TUEV type-examination U.S. EPA conform | ||||||
Electrical safety | CE | ||||||
Mounting | Single mounting point on the duct Mounting flange, DN125, PN6 Mounting flange, ANSI, 5″ | ||||||
Test functions | Manual span check with gas-filled cell |
Description | Analyzer unit of the measuring system | ||||||
Electrical safety | CE | ||||||
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Description | Sender unit of the cross-duct measuring system | ||||||
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Electrical safety | CE | ||||||
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Description | Receiver unit of the cross-duct measuring system | ||||||
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Electrical safety | CE | ||||||
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Description | Measuring probe in open design with integrated purge air control system | ||||||
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Electrical safety | CE | ||||||
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Material in contact with media | Stainless steel 1.4571, stainless steel 1.4539 | ||||||
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Integrated components | Flow monitor for purge air monitoring PT1000 temperature sensor Pressure sensor |
Description | Measuring probe with gas permeable filter element for adjustment with test gas | ||||||||||
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Electrical safety | CE | ||||||||||
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Material in contact with media | Stainless steel 1.4571, stainless steel 1.4539, ceramics, PTFE | ||||||||||
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Integrated components | PT1000 temperature sensor Pressure sensor Heating of optical surfaces |
Description | The control unit serves as the human machine interface and is responsible for data processing and output as well as control and monitoring functions. | ||||||||||
Electrical safety | CE | ||||||||||
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Analog outputs | 1 output: 0/4 ... 20 mA, 500 Ω Electrically isolated | ||||||||||
Analog inputs | 1 input: 0 ... 20 mA, 100 Ω | ||||||||||
Digital outputs | 2 relay contacts: 150 V AC, 1 A, 60 VA / 125 V DC, 1 A, 30 W | ||||||||||
Digital inputs | 1 input: 5 V, 2 mA | ||||||||||
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Input | Arrow keys Functional keys | ||||||||||
Model | Steel sheet enclosure | ||||||||||
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Description | For extending the internal CAN bus connection with a cable provided by the customer | ||||||||
Electrical safety | CE | ||||||||
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Integrated components | On-board 24 V power supply for the sender/receiver unit |
Description | Unit to provide dust-free air for flushing of optical surfaces | ||||||||||||||||||||||||||||||
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Electrical safety | CE | ||||||||||||||||||||||||||||||
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Test functions | Pressure switch (switching point –35 hPa) | ||||||||||||||||||||||||||||||
Integrated components | 2-step air filter, type Europiclon, dust capacity 200 g |