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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.

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.

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.

The FL500 UV/IR Flame Detector monitors for radiation emitted by a flame in both the ultraviolet (UV) and infrared (IR) spectral ranges. This UV/IR combination provides a fast response time and increased false alarm immunity against sources of radiation for reliable protection.

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

General Monitors offers a wide variety of accessories for our catalytic bead gas sensors.

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.

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. 

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.

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.

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.

General Monitors offers a wide variety of accessories for infrared gas leak detection.

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.

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. The FL500 UV/IR Flame Detector is the replacement for the FL3100H detector. Learn all about its advanced performance specifications here.

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.