Gas Detection

Carbon Dioxide Monitor

The Flamefast CarbonGuard system has been designed specifically for use in schools and colleges and satisfy's all requirements of
Building Bulletin 101(BB101) regulation relating to ventilation in schools. BB101 states that the maximum concentration of carbon dioxide should not exceed 5000 ppm during the teaching day. Also at any occupied time, including teaching, the occupants should be able to lower the concentration of carbon dioxide to 1000ppm.

The system can be interfaced to a integrated ventilation system via the two relay outputs available. CarbonGuard can also be used in
commercial kitchen environments.

Overview:

• CO2 Solid State InAlSb sensor, using patented technology
• Large LED readout giving constant PPM readings.
• 2 alarm outputs, easily configured to required CO2 ppm
• 2 configurable no volt, relay outputs linked to the PPM settings
• Audible alarm at high level detection
• Automatic Reset after alarm
• No contamination risk of sensor due to technology used
• Less than 4 second response time
• High speed, low power consumption, sunlight immunity, real
  
  time, accurate

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Single Channel Gas Monitor

The Monicon Single Channel Gas Monitor is an innovative, cost effective, wall mounted unit, designed to operate in conjunction with the T100 toxic gas detector or the highly successful CGS500 combustible gas sensor. This monitors a range of toxic gases, combustible gases and oxygen in many applications.

Careful product design and rigorous product testing combined with a stringent ISO9002 quality assurance program at Monicon's state-of-the-art manufacturing facility ensure ultimate reliability.

The Monicon Single Channel Gas Monitor offers a robust, easy to use, cost effective approach to providing an effective gas monitoring system where safety matters.

Overview:

• Voltage free relay contacts
• Advanced digital readout
• User programmable
• Low power consumption
• Built-in battery back up circuit
• Alarm inhibit during calibration
• 4-20mA analogue output
• Extensive fault detection firmware
• Sealed to IP65 rating

Click here to download a full technical specification PDF (355kb)

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4 Channel Gas Monitor

The Monicon 4 Channel Gas Monitor is an innovative, cost effective, wall mounted unit. It is designed to operate in conjunction with the T100 toxic gas detector and the highly successful CGS500 combustible gas sensor to monitor a range of toxic gases, combustible gases and oxygen in many applications.

Careful product design and rigorous product testing combined with a stringent ISO9002 quality assurance program at Monicon's state-of-the-art manufacturing facility ensure ultimate reliability.

The Monicon 4 Channel Gas Monitor offers a robust, easy to use, cost effective approach to providing an effective gas monitoring system where safety matters.

Overview:

• Individual voltage free relay contacts
• Advanced digital readout
• User programmable
• Low power consumption
• Built-in battery back up circuit
• Alarm inhibit during calibration
• 4-20mA analogue output
• Extensive fault detection firmware
• Sealed to IP65 rating

Click here to download a full technical specification PDF (358kb)

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Catalytic Combustible Gas Sensor

The CGS500 combustible gas sensor has been designed to measure concentrations of combustible gases in the range 0-100% LEL. The CGS500 is fitted in an EExe certified junction box.

Each sensor contains two thermocatalytic beads. Combustible gases will oxidise on the surface of the active bead while the reference bead compensates for changes in temperature, pressure etc. Each bead consists of a coil of fine platinum wire surrounded by an alumina based substrate containing a catalyst.

An electric current is passed through the bead which raises the temperature to a level where oxidation will occur. The catalyst reduces the temperature at which oxidation occurs, thus prolonging the life of the bead and resulting in much lower power consumption. Catalytic sensors have a typical lifespan of up to 5 years.

Infra-Red Combustible Gas Sensor

The CGS500-IR sensor is a NDIR (Non Dispersive Infrared) sensor designed to replace thermocatalytic gas sensors for monitoring hydrocarbon gases in the range 0-100% LEL. The CGS500-IR is available as a sensor only or fitted in an EEx e certified junction box.

The CGS500-IR uses advanced miniaturised NDIR technology combined with surface-mount microprocessor and firmware technology. A pulsed infrared source emits a broad spectrum infrared beam within an optical cavity. The system measures the absorption of infrared energy as it passes through a gas sample. Different gases have clearly defined absorption characteristics, their concentration can be determined by their absorption of infrared radiation at the wavelength determined by filter lambda 1 in the diagram.

To compensate for interfering factors filter lambda 2 isolates another wavelength which is used to measure the total transmission through the optical cavity and is not affected by the gas being monitored. By comparing the infrared energy reaching each of the two detectors, the concentration of the gas sample can be determined. The signal processor compares and linearises these two signals. A thermistor monitors the sensor temperature and the signal processor factors in variations caused by temperature changes.

Multi Channel Gas Monitor

The multichannel gas detection systems are a modular, rack mounted, multichannel monitor providing fast, reliable warnings of combustible gas concentrations at levels below which these gases become potentially explosive. Or they provide warnings against exposures to potentially harmful levels of SO2, CO, O2, O3, NO, NO2, HCl, HCN, H2, H2S, NH3, C2H4O and Cl2 in air.

Each module is fully independent in operation for optimum reliability.

Intelligent Gas Monitor

The Monicon S500 Gas Monitor is a rugged, self contained, intelligent gas sensor with, many advanced features to provide fast, reliable warnings of combustible gas concentrations at levels below which these gases become potentially explosive. The S500 is certified ATEX EEx'd IIc T6 Ta -20ºC to +60ºC.

The gas concentration is indicated locally on the dot-matrix LED display in the range 0-100% LEL. The S500 incorporates a 4-20mA analogue output, an RS485 computer interface and on-board alarm relays.

Toxic Gas Sensor

The T100 is a 4-20mA 2-wire transmitter that can measure a wide range of gases and is housed in a rugged, compact metallic enclosure. It incorporates advanced SMD electronics and a 3 electrode electrochemical sensor based on micro fuel cell technology, designed to be maintenance free and inherently stable.

The sensor uses the highly successful capillary diffusion barrier technology, resulting in a low temperature coefficient and a direct response to concentration, relatively unaffected by pressure. The use of electrodes based on fuel cell technology gives a high reserve of activity which results in long term stability.

Gas diffusing to the sensor electrode reacts at the surface of the electrode either by oxidation (e.g. CO, H2S, SO2, NO, H2, HCN, HCl, C2H4O, NH3) or by reduction (NO2, O3 and Cl2). Reactions are catalysed by specially developed electrode materials and are designed to be specific to the gas being sensed.