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Gas & Flame Detection


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Intelligent Sensor for Combustible Gas Detection

Intelligent Sensor for Combustible Gas Detection


The Model S4000CH Intelligent Sensor is a microprocessor-based transmitter designed for use with General Monitors' catalytic bead sensors. The unit features one person calibration and can virtually self-calibrate by simply activating a magnetic switch and applying gas. It is designed to monitor combustible gases and vapors within the lower explosive limit (LEL) and provide status indication and alarm outputs.
All of the Model S4000CH electronics are contained within an explosion-proof housing so that sensor information can be processed at the sensor site. The detector uses a 4-20 mA analog output signal that is proportional to 0 to 100% LEL gas concentration at the sensor. In addition, the Model S4000CH includes warning, alarm, and ...
Intelligent Sensor for H<sub>2</sub> Gas Detection

Intelligent Sensor for H2S Gas Detection


The Model S4000TH Intelligent Sensor is a microprocessor-based transmitter designed for use with General Monitors' Metal Oxide Semiconductor (MOS) sensor. This unit features one person calibration and can virtually self-calibrate by simply activating a magnetic switch and applying gas. It is designed to detect hydrogen sulfide in parts per million (ppm) levels and provide status indication and alarm outputs.
All of the S4000TH electronics are contained within an explosion-proof housing so that sensor information can be processed at the sensor site. It provides a 4-20 mA signal which is proportional to 0 to 100% of the detection range at the sensor. In addition, the S4000TH includes warning, alarm and fault relay contacts that can be ...
Intelligent Sensor For Toxic Gas Detection

Intelligent Sensor for Toxic Gas Detection


The TS4000H is a 24 VDC-powered toxic gas detector comprised of a base unit, interface module, and electrochemical cell (sensor). The TS4000H monitors a variety of toxic gases in the parts per million (ppm) range, including: ammonia, carbon monoxide, chlorine, chlorine dioxide, hydrogen chloride, hydrogen sulfide, nitric oxide, nitrogen dioxide, oxygen deficiency, ozone, and sulfur dioxide. Configuring the TS4000H to detect a specific target gas is accomplished by simply installing a new sensor and calibrating.
The microprocessor-based electronics of the interface module process information at the sensor site and communicate detected gas values to the base unit for data control and display. In addition, the TS4000H includes warning, ...
Single/Multi-Point Monitors for use with Model IR400 Point IR Gas Detector

Single/Multi-Point Monitors for use with Model IR400 Point IR Gas Detector

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The IR4000 Monitor is available in two options. The Model IR4000S is a Single-Point Monitor and the Model IR4000M is a Multi-Point Monitor. Both feature a three-digit LED display and user interface to our Model IR400 point IR gas detector. The monitor allows local calibration and displays gas concentration. Both are housed in an explosion-proof junction box enclosure that can be installed in hazardous locations adjacent to the detectors
Optional relays for both monitors provide output for Alarm, Warn, and Fault conditions occurring at each detector. Users can select operating mode, warn, and alarm setpoints via a magnetically activated switch. The relays are user-programmable as Latching or Non-Latching, normally De-Energized or ...
Infrared Point Detector for Combustible Gas Detection

Infrared Point Detector for Combustible Gas Detection


The Model IR400 infrared (IR) point detector is a microprocessor-based combustible gas detector that continuously monitors combustible gases in the lower explosive limit (LEL) range and provides a 4 to 20 mA analog signal proportional to the 0 to 100% LEL concentration. The detector also monitors other conditions such as supply voltage and optical path integrity.
The IR400 detection principle is based on measuring the absorption of infrared radiation passing through a volume of gas using a dual beam, single detector method. The IR detector measures the intensity of two specific wavelengths, one at an absorption wavelength and another outside of the absorption wavelength. The gas concentration is determined by a comparison of these two ...
Open Path Gas Detector

Open Path Gas Detector


The Model IR5500 is an open path IR gas detector that provides continuous monitoring of methane and propane gas concentrations. The system consists of an IR source and receiver which continuously monitors for methane in both the 0 to 5000 ppm meter and 0 to 5 LEL meter range. A 0 to 2000 ppm meter and 0 to 1 LEL meter range is also available for monitoring propane. The IR5500 provides two 4 to 20 mA analog signals proportional to each of the above ranges, in addition to a digital display and relay contacts.
The IR5500 is easily aligned using the digital display and adjustable mounting arms, therefore it does not require any bulky setup equipment (e.g. digital volt meters, handheld alignment aids). The IR5500's sensitivity can be checked ...
Multi-Spectrum Infrared Flame Detector

Multi-Spectrum Infrared Flame Detector


The Model FL4000H is an advanced multi-spectrum flame detector designed to provide superior false alarm immunity with the widest field of view. The FL4000H employs a state-of-the-art multi-spectrum infrared (MSIR) sensor array with a sophisticated Neural Network Technology (NNT) system. The FL4000H is designed to detect typical fires such as those produced by alcohol, n-heptane, gasoline, jet fuels and hydrocarbons. In addition, the FL4000H can see through dense smoke produced by diesel, rubber, plastics, lube oil, and crude oil fires.

The NNT flame discrimination algorithm classifies the output signals from the MSIR sensor array as either fire or non-fire. The MSIR/NNT combination is highly immune to false alarms caused by ...
UV/ IR and UV Unitized Flame Detectors

UV/ IR and UV Unitized Flame Detectors

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General Monitor's Models FL3100H and FL3101H are Ultraviolet/Infrared and Ultraviolet-only flame detectors designed to detect unwanted fires and provide alarm outputs directly from the detector while maintaining false alarm immunity.

The Model FL3100H detects fires by monitoring in both the ultraviolet and infrared (UV & IR) spectral ranges making it highly immune to false alarms caused by lightning, arc welding, hot objects and other sources of radiation. The Model FL3101H detects in only the ultraviolet (UV) spectral range for optimized speed of response.

Other features of the FL3100H and FL3101H include three alarm/fault relays, and an RS-485 serial output with Modbus RTU protocol for linking up to 128 detectors in series ...
Ultrasonic Gas Leak Detector

Ultrasonic Gas Leak Detector


The Gassonic Observer is a non-concentration based gas detector used to detect leaks from high-pressure systems. Like other ultrasonic monitors, the Gassonic Observer responds to the airborne ultrasound generated from gas releases in open, well ventilated areas, where traditional methods of detection may be unsuitable or dependent on ventilation. Because the Gassonic Observer 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. Further, with its maximum coverage radius of 20 meters, it can supervise a relatively large area with a single device.

The Gassonic Observer is immune to many false signals and can be configured to ...
Model TL100 UV Test Lamp

Model TL100 UV Test Lamp


The General Monitors TL100 UV Test Lamp is a portable, rechargeable source of ultraviolet radiation, specifically designed for use in testing General Monitors UV flame detectors. It emits a wide band of radiation, which includes the 185 to 260 nanometer region.

To avoid damaging exposure to ultraviolet radiation, the TL100 provides a "Power On" indicator so that direct viewing of the lamp is not necessary. The TL100 is approved by CSA as intrinsically safe for use in Class I, Division 1, Groups C & D.
Model TL105 Test Lamp for Flame Detection

Model TL105 Test Lamp for Flame Detection


The TL105 is a battery operated, rechargeable test lamp specifically designed to test General Monitors’ UV, UV/IR and IR flame detectors. The test lamp provides a high-energy, broadband radiation source that emits sufficient energy in both the ultraviolet and infrared spectra to activate UV and/or IR flame detectors. To simulate a fire, the test lamp automatically flashes at various selectable rates.

The TL105 is designed for use in Class I, Divisions 1 & 2, Groups C and D areas. The test lamp functions on internal nickel-metal hydride batteries which, when fully charged, allows continuous operation for at least 45 minutes. An internal circuit prevents operation when the battery charge is low.

A variety of flashing test ...
   
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