Fixed Gas & Flame Detection

Series 47K

Designed to detect flammable gas or vapor, the stainless steel Series 47K gas sensors offer a cost-effective way to detect hazards in the air. The sensors come in poison resistant and high-temperature versions, and have three- or five-wire connection.
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TA102A Single Channel Combustible Trip Amplifier Module

The TA102A is a single-channel Combustible Gas Trip Amplifier Module designed for use with one General Monitors intelligent transmitter to monitor combustible gases and vapors within the lower explosive limit (LEL) and provide status indication and alarm outputs. Microprocessor-based electronics allow all options to be user selectable through a front panel interface (mode / select switch and digital display). A digital display indicates fault codes and set up options. Other features include: LED indications of status, as well as both open collector and relay outputs for fault, low alarm and high alarm.
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4802A Zero Two Series Control Module for Combustible Applications

The 4802A is a single channel Combustible Gas Control Module that has been designed for use with our proven catalytic bead sensors. It is designed to monitor combustible gases and vapors within the lower explosive limit (LEL) and provide status indication and alarm outputs. Microprocessor-based electronics allow all options to be user selectable through the front panel interface. A digital display indicates gas concentration, fault codes, calibration cues and setup options. Other features: LED indications of status, as well as open collector and relay outputs.
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610A Four Channel Combustible Gas Monitor

The 610A is a system for continuously monitoring combustible gas (hydrocarbon) concentrations in four locations. The system consists of four General Monitors remote catalytic bead sensing assemblies and a solid-state controller. The controller features four independent channels, each having its own circuitry. The 610A features a digital display of gas concentrations in % LEL (0-99% lower explosive limit) for each channel.
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Catalytic Bead Sensors

The General Monitors catalytic bead gas sensors are well known for their sensitivity, reliability and longevity and make them the first choice for most users of the catalytic oxidation gas detection principle. Every component is manufactured in-house to ensure optimum performance. Careful matching of the active and reference elements ("beads") result in a sensor that has negligible zero drift with respect to changes in humidity, pressure, and temperature.
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IR5500 Open Path Infrared Gas Detector

The IR5500 is an open path infrared (IR) gas detector that continuously monitors for flammable gas leaks over large open areas. It monitors in both the LEL-m and ppm-m ranges to detect both small and large leaks. The IR5500 offers the benefits of early detection with its high sensitivity to gas concentrations at the ppm levels.  This feature allows it to alarm faster than an LEL-only detector. Digital display and adjustable mounting arms ensure easy alignment. Factory calibrated for low-maintenance operation.
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580A Dual-Channel Combustible Gas Monitor

The 580A is a compact, highly-versatile system for continuously monitoring combustible gas (hydrocarbon) concentrations in two locations. The system consists of two remote catalytic sensing assemblies and a solid-state controller. The controller automatically displays the higher reading channel on a digital display, scaled from 0-100% LEL (lower explosive limit). Manual override switching permits readout of the low channel at any time.
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Catalytic Bead Accessories

General Monitors offers a wide variety of accessories for our catalytic bead gas sensors.
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Ultima OPIR-5 Open Path Infrared Detector

Get continuous monitoring of methane, propane, and other combustible gases with this open path infrared detector. Provides 4-20 mA analog signals, as well as digital display and relay contacts. Digital display and adjustable mounting arms ensure easy alignment. Factory calibrated for low-maintenance operation.
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IR Gas Detector Accessories

General Monitors offers a wide variety of accessories for infrared gas leak detection.
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Observer-i Ultrasonic Gas Leak Detector

Instantly detect pressurized gas leaks with this high-precision,  omni-direction acoustic detector utilizing Gassonic ultrasonic technology. Works even when traditional methods of gas detection are unsuitable or dependent on ventilation. Features Artificial Neural  Network (ANN) technology that distinguishes between real gas leaks and false  alarm sources without requiring any in-field training. The Observer-i UGLD provides an industry-leading detection range (up to 28 m) reducing the  number of detectors required. Ideal for use in complex, outdoor pipeline systems.
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DC110 Eight Channel Combustible Readout / Relay Module

The DC110 is an eight-channel Readout / Relay Module designed to be used with up to eight of our remotely located Combustible Intelligent Sensors. The front panel contains a digital display that indicates 0-99% LEL (lower explosive limit) of the combustible gas being monitored by the Intelligent Sensors.
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RGC - Remote Gas Calibrator for Catalytic Bead Sensors

The Remote Gas Calibrator (RGC) allows calibration gas to be applied to a remotely located catalytic bead sensor from an easily accessible location. The RGC is used for blocking ambient air and redirecting methane to the catalytic sensor for calibration or testing sensor accuracy. The RGC tests or calibrates the General Monitors catalytic sensor with 50% LEL methane. The unit is capable of calibrating gas at wind velocities up to 50 mph. The RGC is used manually with a pressure regulator (P/N 80146-1) and is suitable for calibrating with any light hydrocarbon.
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RGC-IR - Remote Gas Calibrator for Point IR Detectors

The remote gas calibrator, RGC-IR, is designed to be permanently installed on a combustible IR gas detector. The RGC-IR provides protection from outside elements and allows the user to apply calibration gas (@ 50 psi) to the detector from a remote source.
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RGC-HT - Remote Gas Calibrator for High Temperatures

To verify the proper operation of a catalytic combustible gas sensor, it is necessary to periodically apply a gas of known concentration to the sensor. This is usually done manually at the site with gas supplied from a small lecture bottle. As the sensor reacts to the calibration gas, adjustments are made to the monitoring system to bring its calibration into agreement with the known concentration of the calibration gas. At times, sensors are mounted in inaccessible locations, requiring expensive catwalks or scaffolding to reach them. The High Temp Remote Gas Calibrator (RGC-HT) allows the calibration gas to be applied to the catalytic bead sensor from easily accessible locations. The RGC-HT is used for blocking ambient air and redirecting methane or other light hydrocarbon gases to the catalytic bead sensor for calibration or testing sensor accuracy in various environments. The RGC-HT tests or calibrates the General Monitors Catalytic Bead sensor with 50% LEL methane or other light hydrocarbon gas. The unit is capable of calibrating and detecting gases in various wind conditions (up to 45 mph) and temperatures (up to 200°C when used with high temperature sensor).
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ARGC - Automatic Remote Gas Calibrator

To verify the proper operation of a catalytic combustible gas sensor, it is necessary to periodically apply a gas of known concentration to the sensor. This is usually done manually at the site with gas supplied from a small lecture bottle. As the sensor reacts to the calibration gas, adjustments are made to the monitoring system to bring its calibration into agreement with the known concentration of gas. At times, sensors are mounted in inaccessible locations, requiring expensive catwalks or scaffolding to reach them. The Automatic Remote Gas Calibrator (ARGC) allows the calibration gas to be applied to the catalytic bead sensor from easily accessible locations. The ARGC is used for blocking ambient air and redirecting methane to the catalytic sensor for calibration or testing sensor accuracy. The ARGC tests or calibrates the General Monitors catalytic sensor with 50% LEL methane. The unit is capable of calibrating gas at wind velocities up to 50 mph. Note: the RGC (P/N 80153-1), used manually with a pressure regulator (P/N 80147-1), is suitable for calibrating with any light hydrocarbon.
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1701 Portable Test and Calibration Unit

The 1701 is a portable test and calibration unit used to verify the operation and calibrate certain ultrasonic gas leak detectors. Although the detectors do not require regular maintenance, the 1701 can be used to satisfy the requirements for regular plant maintenance. Further, the 1701 requires no electrical connection to the gas leak detector but is simply placed over the sensor head of the gas leak detector.
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IR4000S Single-Point Gas Monitor

The IR4000S Single-Point Monitor is a display and user interface for the IR400 point IR gas detector. The monitor allows local calibration and displays gas concentration. Relays are optional. The relays provide output for Alarm, Warn, and Fault conditions.
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Mounting Hardware

General Monitors offers a complete line of mounting hardware to facilitate installing any of our gas and flame detectors in commercial or industrial facilities.
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IR4000M Multi-Point Gas Monitor

The IR4000M Multi-Point Gas Monitor can be used as an integrated combustible gas detection system, with capacity to connect eight point IR or open path gas detectors and read their status with one command. The highest current % LEL among all connected detectors is shown continuously during normal operation. An extensive set of menus are easily navigated using a magnetic switch to request the status and configuration data stored by the IR4000M.
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Toxgard® II Gas Monitor

Simply connect the convenient ToxGard II Gas Monitor to a power source and a remote sensor, and it's ready to detect toxic gases, combustible gases and oxygen deficiency. The indoor/outdoor unit is housed in a rugged NEMA 4X enclosure and features a large LED screen, three levels of alarm and a failsafe fault relay output.
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MultiGard™ 5000 Multipoint Gas Sampling System

The economical, efficient MultiGard 5000 Gas Sampling System uses auto-standardization and flexible sample point order to analyze gas from up to 32 locations. Maintenance and calibration are made easy because all the work is performed at a single location, while also ensuring personnel don't have to enter the monitored area. The unit directly connects to Modbus TCP/BACnet IP networks, which allows communication to other equipment or controllers. The system allows secure viewing at one's personal computer. The screen provides easy access to scroll-down menus and visual indicators of sensor condition.
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Ultima® XI Gas Monitor

Featuring state-of-the-art infrared technology and precision MSA craftsmanship, the stainless steel Ultima XI Gas Monitor provides failsafe gas detection. With a patent-pending design, the unit is immune to poison and uses dual-wavelength, heated-optics technology to compensate for temperature, humidity and aging effects. The no-gas calibration provides zero and span adjustments while also offering true one-man calibration.
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Ultima® X Series Gas Monitors with X3® Technology

The Ultima X Series Gas Monitors with X3 Technology bring the power of multi-sensing, signal boost and ModBus output to the Ultima X line of MSA gas monitors. The units are crafted from either stainless steel or NEMA 4X-rated plastic, and our patented sensor disconnect-underpower feature allows all sensors to be replaced in hazardous areas without area declassification. The interchangeable smart sensors eliminate the need for reconfiguration, while the use of one circuit board increases reliability. Each sensor can be placed up to 3,000 feet from the monitor, while the scrolling LCD screen displays sensor reading and gas type.   Note: This is a custom product. Please consult your local sales manager or contact Customer Service for configuration details
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Ultima® XL/XT Series Gas Monitors

Engineered to provide cost-efficient gas detection, the Ultima XL/XT Series Gas Monitors are simply an outstanding choice. The units boast a hand-held HART port running over 4-20mA output provides convenient setup, calibration and diagnostics. The interchangeable smart sensors eliminate the need for reconfiguration, while local calibration employs LEDS and push-buttons. Indoors or outdoors, some of these explosion-proof models feature infrared technology that eliminates the need for frequent calibrations. Some units operations are based on dual-wavelength, heated-optics technology, which compensates for temperature, humidity and aging effects. The monitors use only one circuit board for increased reliability, and they're easy to install with two-piece field-wiring connectors.
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TRIGARD® Gas Monitoring System

Designed to meet a variety of demanding applications, from wastewater facilities, to light industry and commercial applications, the TRIGARD Gas Monitoring System features MSA's precision craftsmanship and detects chlorine, sulfur dioxide and other toxic and combustible gases. The adjustable-range unit also detects oxygen deficiency and enrichment. AC or DC powered, the system features a highly visible LCD screen and simple push-button calibration. Boasting sturdy NEMA 4X design and a single board, the unit offers multiple sensor mounting options. Our patented sensor disconnect-underpower feature allows all sensors to be replaced in hazardous areas without area declassification, while interchangeable smart sensors are pre-calibrated for installation right out of the box.
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TriGas Monitoring System

The TriGas Monitoring System consists of up to three sensors with Ultima® X3 Technology’s digital communications with on-board LEDs and relays to provide local alarms. This TriGas system offers  interchangeable smart sensors, internal DC-powered sample-draw pump and a hydrophobic end-of-line filter that makes it  ideal for areas of wastewater treatment plants that are subject to flooding (such as wet wells). The TriGas Monitoring System typically monitors for oxygen, hydrogen sulfide and combustible gases (methane or petroleum vapors) and is specifically designed for optimum performance within high-moisture environments. This system can also be supplied with the proper options to meet the NFPA 820 section 1.8 standards followed by the wastewater industry.  
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