Fixed Gas & Flame Detection

Featured MSA ULTIMA X5000 Gas Detector with green status LEDs shining

ULTIMA® X5000 Gas Monitor

The ULTIMA® X5000 Gas Monitor  is the future of gas detection for oxygen, toxic and combustible gases. MSA XCell® gas sensors with TruCal® technology offer calibration cycles up to 18 months (local calibration respected). The gas transmitter's advanced, multi-lingual OLED display is easy to read and the unique touch-screen interface makes it simple to navigate.
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Featured PrimaX® I Gas Transmitter

PrimaX® I Gas Transmitter

Indoors or outdoors, our PrimaX I Gas Transmitter provides dependable, accurate gas detection. The transmitter detects toxic gases and oxygen and is housed in an antistatic, reinforced nylon enclosure. It also has a large, easy-to-read LCD screen and attaches to an integral mounting plate for easy installation, while the built-in keypad makes for quick, simple calibration. To transmit data, the unit uses a 4-20 mA output signal and can also be configured to use HART digital communication. With easily replaced plug-in sensors, the PrimaX I transmitter is suitable for laboratories, chemical plants, power plants and several other industry settings.
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Featured MSA General Monitors S5000 Gas Monitor with X-Cell gas sensor

General Monitors S5000 Gas Monitor

The General Monitors S5000 Gas Monitor is the ultimate gas detector for extreme environments needing to detect oxygen, toxic and combustible gases. It operates over a wide temperature range using a variety of gas sensing technologies. XCell® gas sensors with TruCal® technology extends calibration cycles up to 18 months. Dual sensing capability doubles the sensing power.
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Featured HazardWatch Fire and Gas Detection System - Controller unit

HazardWatch Fire and Gas System

An innovative, modular system that combines highly reliable programmable logic controller (PLC) technology with our advanced gas and flame field devices. It is highly scalable, making it suitable for small systems to large plant-wide applications. Offering intelligence, flexibility and reliability, the HazardWatch System's controller hardware configuration and software has been tested by Factory Mutual to verify NFPA 72 compliance.
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Featured MSA Senscient ELDS Open Path Gas Detector

Senscient ELDS™ Open Path Gas Detector

The Senscient ELDS laser-based open path gas detector is available for a wide range of toxic and flammable gases. The Senscient ELDS uses 'SimuGas' self-testing to eliminate employees entering hazardous areas for gas checks. Nuisance false alarms are virtually eliminated with its breakthrough Harmonic Fingerprint processing.
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Featured MSA FL4000H Multi-spectrum Infared Flame Detector mounted on metal bracket

FL4000H Multi-spectrum IR Flame Detector

The FL4000H is an advanced multi-spectrum infrared (MSIR) flame detector that provides superior false alarm immunity with the widest field of view. The FL4000H employs a multi-spectral optical IR sensing array with a sophisticated Neural Network Technology (NNT) system to reliably discriminate between actual flames and the vast majority of false alarm sources. The FL4000H detects typical fires such as alcohol, n-heptane, gasoline, jet fuels and hydrocarbons. It can also see through dense smoke produced by diesel, rubber, plastics and lube oil fires.
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Featured MSA GasGard 100 Control System - front of controller unit.

GasGard® 100 Control System

New GasGard 100 Control System scalable, high performance data acquisition/data-logging platform offers an intelligent approach to data acquisition and control for fixed flame and gas detection. Open Ethernet connectivity with web-based configuration and data monitoring functions allow GasGard 100 Controllers to provide a wide range of monitoring and historical logging functions. View real time trends via web browser from any PC without special software. Gasgard 100 Control System provides fully integrated measurement, display and recording platforms, that when equipped with MSA’s extensive line of transmitters and sensors, forms a complete gas detection solution.
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Featured S4000CH Combustible Gas Detector

S4000CH Combustible Gas Detector

The S4000CH Intelligent Sensor is a microprocessor-based transmitter designed for use with General Monitors industry-leading catalytic bead sensors. It features one person calibration and virtually self-calibrates by simply activating a magnetic switch and applying gas. It monitors combustible gases and vapors within the lower explosive limit (LEL) and provides status indication and alarm outputs. Complies with ANSI/ISA 12.13.01-2000 performance requirements for combustible gas detectors.
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Featured MSA Ultima Series XE Gas Detector

Ultima® X Series Gas Monitors

Designed to provide thorough, continuous monitoring of many hazardous gases, the indoor/outdoor Ultima X Series Gas Monitors offer excellent performance and MSA quality craftsmanship. DuraSource™ Technology offers extended sensor life, while HART provides convenient setup, calibration and diagnostics. HART also allows for existing component install and wiring to be used. A single circuit board increases reliability, while our patented sensor disconnect-underpower feature allows all sensors to be replaced in hazardous areas without area declassification. The units are crafted from either stainless steel or polycarbonate, and the interchangeable smart sensors eliminate the need for reconfiguration. Our scrolling LCD screen display sensor reading and gas type, while the calibration process includes date stamping and the ability to calibrate locally or remotely.
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Featured MSA FL3100H UV/Infared Flame Detector

FL3100H UV/IR Flame Detector

The FL3100H is an Ultraviolet / Infrared flame detector designed to detect fires and provide alarm outputs directly from the detector while maintaining false alarm immunity. It monitors in both the ultraviolet (UV) and infrared (IR) spectral ranges, making it highly immune to false alarms. Configurations with dual Modbus and HART are available. Modbus and HART data can be used for predictive maintenance. The flame detector's electronics are integral within its explosion-proof housing, allowing detector information to be processed locally.
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Featured MSA SUPREMA Fire and Gas Detection System Touch Controller - front view of control unit

SUPREMATouch Controller

The SUPREMATouch has been enhanced with several new features which makes it outstanding in its class. Added to the popular large colour touchscreen display, a new title-based menu structure has been added to optimize intuitive operation. The SUPREMATouch can be used with a wide range of detectors for combustible gas, toxic gas and oxygen. Output options include relays and 4-20mA outputs. Remote racks can be connected (satellite structure), which expands control systems and reduces cabling costs. Interfacing to external systems is provided by using Modbus or Profibus. The SUPREMATouch has been certified according to ATEX and is suitable for virtually any safety related application including redundant systems with up to a Safety Integrity Level (SIL) 3 rating (EN 61508). The intuitive SUPREMA Manager Software is intended for configuration, parameterization and calibration of the SUPREMATouch Fire and Gas Controller. It offers the option to create detailed and clearly laid out reports to support documentation and supports all the new features of the SUPREMATouch. Note: This is a custom product. Please consult your local MSA distributor or contact MSA Customer Service for configuration details.  
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Featured Ultima® XIR Gas Monitor

Ultima® XIR Gas Monitor

The microprocessor-based, infrared Ultima XIR gas detector is precisely engineered to continuously monitor for combustible gases and vapors. The unit features DuraSource Technology, which offers improved IR life, and a HART port for easy output access. The explosion-proof stainless steel monitor works indoors or outdoors and features infrared technology that eliminates the need for frequent calibrations. Its operations are based on dual-wavelength, heated-optics technology, which compensates for temperature, humidity and aging effects. The unit uses only one circuit board for increased reliability, and the sensor life isn't reduced by exposure to gas. The LCD screen provides scrolling information, while optional quick-check LEDs provide increased visibility.
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Featured Calibration Kits

Calibration Kits

Simple, accurate calibration is easy with these economical, all-in-one kits. Choose from 14 different types for sensor and instrument calibration. Kits include zero and span cylinders, regulators, tubing, accessories and instructions. All kits housed in a lightweight carrying case, making it convenient to carry everything directly to the sensor location or job site.
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Featured MSA IR400 Point Infared Gas Detector

IR400 Point IR Gas Detector

The IR400 Infrared (IR) Point Detector is a hydrocarbon gas detector that continuously monitors combustible gases and vapors within the lower explosive limit (LEL) and provides alarm indication. It features an industry-leading response time of ≤ 3 seconds, even with a splash guard installed. All electronics are contained within an explosion-proof housing so that the IR400's detector information can be processed locally. Configurations with analog output, Modbus and HART are also available.
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Featured MSA S4000TH Hydrogen Sulphide Gas Detector Unit - front view

S4000TH H2S Gas Detector

The S4000TH Intelligent Gas Sensor is a microprocessor-based transmitter designed for use with General Monitors' thin film metal oxide semiconductor (TFMOS) sensors to detect H2S gas. The unit features one person calibration and can virtually self-calibrate by simply activating a magnetic switch and applying gas. It detects hydrogen sulfide in 0-20 ppm, 0-50 ppm or 0-100 parts per million (ppm) levels over a wide temperature range. 
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Featured 9010/9020 Controller

9010/9020 Controller

The 9010/9020 SIL controller comes with advanced design and innovative features. Monitoring up to 20 channels, it’s now also SIL 2 suitable. The 9010 controller operates with one independent sensor, while the 9020 operates with two independent sensors per control module. Each module comes with an independent AC/DC power supply for increased system reliability. Both units feature full internal diagnostics, which minimize false alarms and unexpected down time. The controller powers up the remote gas detectors, while its large four-digit LCD and LED provide crucial information such as gas concentration, alarm status and more. The 9010/9020 LCD controller monitors up to 20 channels and comes with an independent power supply. The LCD version has approvals for FM (North America) and CCCF (China) whereas the 9010/9020 SIL controller is ATEX and  SIL2 certified.
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Featured PrimaX® P Gas Transmitter

PrimaX® P Gas Transmitter

Designed to detect gases indoors or outdoors, our PrimaX P Gas Transmitter measures oxygen and toxic and combustible gases. The flameproof transmitter is housed in a powder-coated aluminum enclosure that will protect it in extremely dangerous conditions. The unit also features a large, easy-to-read LCD screen and three LED status indicators for up-to-the-second reporting. The transmitter attaches to an integral mounting plate for easy installation, and it can be easily calibrated using the built-in keypad. It uses a 4-20 mA output signal to transmit its data, and it can also be configured to use HART digital communication. With easily replaced plug-in sensors, the PrimaX P transmitter is suitable for laboratories, chemical plants, power plants and several other industry settings.
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Featured PrimaX® IR Gas Transmitter

PrimaX® IR Gas Transmitter

Every feature of the PrimaX IR Gas Transmitter is designed with reliability in mind to withstand the most challenging environmental conditions through out the product’s life. MSA’s PrimaX IR Gas Transmitter offers LEL (Lower Explosive Limit) combustible gas detection through a patented PrimaX Gas Transmitter IR dual source design. A redundant IR source provides reliability and uninterrupted monitoring should a source failure occur. Furthermore, the possibility of obscurations due to rain, fog, dirt, dust, and other environmental conditions is minimized due to dual source design.
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SB100 Ultrasonic Bump Tester

The SB100 is a hand-held battery-operated rechargeable ultrasonic tester designed to bump test General Monitors ultrasonic gas leak detectors. The SB100 is useful for quick tests where physical access to the ultrasonic gas detector can be difficult. The unit can be used to bump test up to 18 meters away from the detector in Class 1, Div 1&2 hazardous areas.
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Ultima® Controller

The Ultima Controller is purpose-designed and built to provide complete access to all advanced features of the Ultima and Ultima X Gas Monitors, as well as the Toxgard II Gas Monitor. Via its full-function and password-protected keypad, users can set the real time clock, set alarm levels, change span-gas values, display date of last calibration, display minimum, maximum and average gas values, change address and set future calibration time/date in addition to providing basic calibration functions
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FlameGard® 5 MSIR Flame Detector

MSA's FlameGard® 5 MSIR Detector is an advanced multi-spectrum flame detector designed to provide superior false alarm immunity with the widest field of view. The detector employs a state-of-the-art multi-spectrum infrared (MSIR) sensor array with a sophisticated Neural Network Technology (NNT) system.
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Ultima® Calibrator

The Ultima Calibrator offers the industry's simplest, quickest calibration. Simple, three-button device is purpose-built for calibrating and changing the address of Ultima and Ultima X Gas Monitors and the Toxgard II Gas Monitor.
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FlameGard® 5 UV/IR Flame Detector

The precision-crafted FlameGard® 5 UV/IR Flame Detector monitors both ultraviolet and infrared (UV & IR) spectral ranges, which makes it highly immune to false alarms caused by lightning, arc welding, hot objects and other sources of radiation. The unit's Continuous Optical Path Monitoring (COPM) checks both the optical path integrity and the detector's electronic circuitry once a minute, while the wide field of view enables greater fire detection coverage.
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Ultima® X Sampling Module

Built for safety programs that demand gas concentration measurement before allowing entrance to an area, the Ultima X Sampling Module is exclusively designed to work with the Ultima X Gas Monitor. The unit features an explosion-proof design and reliably extracts a sample from any confined or inaccessible area—or any area that is too hot, cold, or otherwise harsh—and delivers gas concentration reading directly to the installed gas monitor.
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Zero Two Series Gas and Flame Detection System

Modular system offering the widest range of control cards for use in an integrated fire and/or gas detection system. The Zero Two Series system can monitor any combination of the following: combustible gas, H2S, toxic gas, ultrasonic, oxygen deficiency and flame detection. In addition, its open architecture allows the system to accommodate other sensing devices for tasks such as smoke detection, heat detection and manual call points. 
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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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FlameGard® 5 UV/IR-H2 Flame Detector

The precision-crafted MSA FlameGard® 5 UV/IR-H2 Flame Detector monitors the ultraviolet and infrared spectral ranges to detect unwanted hydrogen fires. Its meticulous engineering and usage of UV and IR make it highly immune to false alarms caused by lightning, arc welding, hot objects and other sources of radiation. The unit's continuous Optical Path Monitoring (COPM) checks both the optical path integrity and the detector's electronic circuitry once a minute, while the wide field of view enables greater fire detection coverage.
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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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FL3100H-H2 UV/IR Flame Detector for Hydrogen Applications

The FL3100H-Hydrogen is an Ultraviolet / Infrared flame detector designed specifically to detect hydrogen (H2) fires and provide alarm outputs directly from the detector while maintaining false alarm immunity. It detects H2 fires by monitoring in both the ultraviolet (UV) and infrared (IR) spectral ranges, making it highly immune to false alarms. Configurations with dual Modbus and HART are available. Modbus and HART data can be used for predictive maintenance. The flame detector's electronics are integral within its explosion-proof housing, allowing detector information to be processed at the point of detection.
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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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FL3101H UV Flame Detector

The FL3101H is an Ultraviolet-only flame detector designed to detect fires and provide alarm outputs directly from the detector while maintaining false alarm immunity. It detects in the ultraviolet (UV) spectral range for optimized speed of response. Configurations with dual Modbus and HART are available. Modbus and HART data can be used for predictive maintenance. The flame detector's electronics are integral within its explosion-proof housing, allowing detector information to be processed at the point of detection.
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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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H2S Gas Sensors and Accessories

General Monitorsʼ hydrogen sulfide (H2S) sensors are solid state devices, designed and manufactured for long life and fast response. They are selective to H2S and remain unaffected by high concentrations of other substances like hydrogen, sulfur dioxide, and gasoline vapors, which are often present in facilities that process sour gas and crude oil. A high tolerance to a broad range of temperatures and humidity enable these sensors to operate in rugged environments, as does their capacity to withstand exposure to high H2S concentrations over short periods.
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Electrochemical Sensors

The General Monitors electrochemical gas sensors are highly sensitive to toxic gases including carbon monoxide, H2S, hydrogen, hydrogen chloride, ammonia, chlorine, chlorine dioxide,  nitric oxide, nitrogen dioxide, ozone, SO2, and oxygen deficiency.
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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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Toxic Gas Accessories

General Monitors offers a wide variety of accessories for our toxic gas detectors.
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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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TL105 Test Lamp

The TL105 is a battery operated test lamp designed specifically to test General Monitors Flame Detectors. The TL105 is an explosion-proof test lamp that can be used with the FL4000H MSIR flame detector as well as any of the FL3100 Series Flame Detectors. The TL105 operates up to 35 feet from the flame detector.
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FlameGard® 5 Test Lamp

With its high-energy broadband radiation source, the battery-operated FlameGard® 5 Test Lamp is precision-designed to test MSA's FlameGard® 5 MSIR, UV/IR, and UV/IR-H2 Flame Detectors. The rechargeable test lamp provides a radiation source that emits sufficient energy in both the ultraviolet and infrared spectra to activate UV and/or IR flame detectors. A variety of flashing test patterns allow the test lamp to check the operation of MSA flame detectors.
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TS4000H Toxic Gas Detector

The TS4000H Intelligent Toxic Gas Detector continuously monitors a variety of toxic gases in the ppm range or oxygen deficiency, delivering highly accurate detection and protection. The unit features one person calibration and virtually self-calibrates by simply activating a magnetic switch and applying gas. It provides status indication and alarm outputs. Configurations with relays, Modbus, and HART are available to meet many needs.
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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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TS4000H - H2S Electrochemical Gas Detector

The TS4000H Intelligent Toxic Gas Detector continuously monitors hydrogen sulfide (H2S) in several ppm ranges, delivering highly accurate detection and protection. The unit features one person calibration and can virtually self-calibrate by simply activating a magnetic switch and applying gas. It provides status indication and alarm outputs. Configurations with relays, Modbus, and HART are available to meet many needs.
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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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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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Chemgard® Photoacoustic Infrared Gas Monitor Series

The stable, durable Chemgard Photoacoustic Infrared Gas Monitor is purpose-built and detects minute amounts of a wide variety of gases. Three different enclosure styles ensure there is a configuration for wildly different situations. The instrument typically draws the gas sample via an internal pump, which allows the unit to be mounted in a convenient location if the area to be monitored is inaccessible. The unit can be expanded to monitor up to 8 locations, while an easy-to-read display shows gas concentrations and 3 levels of alarms.
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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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IR700 Point IR Carbon Dioxide Gas Detector

The IR700 Infrared (IR) Point Detector is a microprocessor-based carbon dioxide gas detector that continuously monitors for CO2 in ppm levels. All electronics are contained within an explosion-proof housing so that the IR700's detector information can be processed locally. The IR700 operates with a 4-20 mA signal, which is proportional to 0 to 100% full scale. Configurations with analog output, Modbus and HART are available. Modbus and HART data can be used for predictive maintenance.
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IR4000S-CO2 Single Point Gas Monitor

The IR4000S CO2 Single-Point Monitor is a display and user interface for the IR700 carbon dioxide 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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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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Chillgard® NH3 Gas Monitor

The Chillgard NH3 Gas Monitor is the economical choice for fast, reliable detection of parts-per-million (ppm) levels of ammonia, down to -40°C. Capable of measuring a 10 ppm leak, with full-range scale of 0-1000 ppm.
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Surveyor Ultrasonic Gas Leak Detector

The Surveyor detects gas leaks by sensing the airborne ultrasound emitted from leaking gas at high pressure. Ultrasonic gas detection is based on robust and proven Gassonic technology and designed for long and failsafe operation in extreme environmental conditions. Because the Surveyor responds to the source of a gas release rather than the dispersed gas, it is unaffected by changing wind directions, gas dilution, and the direction of the gas leak.
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