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Boiler room gas detection systems

Regardless of its size, a boiler room presents potential significant risks. Actually, a gas leak could have severe consequences for people and goods. Installing a boiler room gas detection system is an efficient and simple way to reduce these risks.

Boiler room gas detection systems, equipement for boiler room safety and compliance

Most of gas boiler rooms run without permanent monitoring and a gas leak could stay unnoticed. Boiler rooms gas detection controllers mainly remove these risks triggering valve actuators. In presence of any flammable gas detection (liquefied petroleum gas or natural gas), a controller will shut down gas supply with a gas solenoid valve installed outside the boiler room.

Boiler rooms standards and regulations

Bigger gas detection systems for boiler rooms are regulated under specific laws but common sense implies same boiler room safety regulations for smaller boiler rooms. For gases that are lighter than air – such as methane – the detector will be placed above the burner. For gases heavier than air – such as butane or propane – the detector will be placed below the burner.
 
For optimal boiler room gas detection, an additional detector shall be placed at an upper point in boiler rooms with high ceilings (beyond 3 meters). It can also be placed in the extraction system to have twin detection (burner and ceiling) regardless of the number of burners (furnace).

Boiler room gas detection: different alarm thresholds

A gas detection controller for boiler heating systems manages every fixed gas detector and features relays for alarm signals and valves actuators:

  • Level 1: 10 or 15 % of the LEL (lower explosive limit), visual and audible signal with alarm report for fast on-site intervention
  • Level 2: Between 20 and 40 % of the LEL, gas supply shutdown through a manual reset boiler gas valve (human action to reactivate the boiler room)
  • Level 3: Only for biggest gas boiler heating systems. Starting at 60% of the LEL, direct action on the main LV board and complete shutdown of any power supply (except the boiler room gas detection controller)

Equipment selection for boiler room gas detection:

The main - and most efficient - action in case of gas presence is the gas supply shutdown through a manual or automatic reset gas safety valve. As this solenoid valve is controlled by a gas detection controller, it will close through a tension interruption in case of an alarm…

SIL 2 approved ATEX gas detector to detect the combustible gases (IR or catalytic), CO2 (IR), toxic gases (electrochemical), solvents or freons (semiconductor) and asphyxiating gases (oxygen deficiency).

  • Fixed gas detector OLCT100
  • Detection of hydrocarbons, solvents, toxic gases, freons, VOC, CO2
  • Housing made of aluminium with epoxy paint (optional 316L Stainless Steel version)
  • Outputs: OLC100: Wheatstone bridge – OLCT100: 4-20 mA linear
  • Power supply: 15.5 to 32 VDC
  • ATEX & SIL 2 approved for catalytic and infrared versions
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Fixed gas detector – OLCT100

SIL 2 approved ATEX gas detector to detect the combustible gases (IR or catalytic), CO2 (IR), toxic gases (electrochemical), solvents or freons (semiconductor) and asphyxiating gases (oxygen deficiency).

Fixed gas detector OLCT100
  • Detection of hydrocarbons, solvents, toxic gases, freons, VOC, CO2
  • Housing made of aluminium with epoxy paint (optional 316L Stainless Steel version)
  • Outputs: OLC100: Wheatstone bridge – OLCT100: 4-20 mA linear
  • Power supply: 15.5 to 32 VDC
  • ATEX & SIL 2 approved for catalytic and infrared versions
Additional information

Thanks to the wide variety of sensor technologies that can be used with this monitor, the OLCT100 fixed gas detector can detect a large range of gases. The combustible gases can be detected with a catalytic or infrared sensor, toxic gases with an electrochemical sensor, freons with a semiconductor sensor and carbon dioxide with an infrared sensor.

Two outputs types are available for this fixed gas detector range. The first one is the 4-20 mA analog output. It can be used to detect combustible, toxic and asphyxiating gases but also solvents, freons or carbon dioxide. The second output version is a Wheatstone bridge for the detection of combustible gases (0-100% LEL only).

Many accessories are available for the OLCT100 gas detector to improve sensor response time or to get optimal implementation.

The OLC/OLCT100 range is available under 5 versions:

  • OLC100 : Wheatstone bridge output detector to detect the combustible gases (0-100% LEL only)
  • OLCT 100 XP: Explosion-proof version equipped with a catalytic, electrochemical or semiconductor sensor to detect the combustible or toxic gases or oxygen.
  • OLCT 100 IS: Extremely reliable version to detect toxic gases or oxygen.
  • OLCT 100 XP IR: Explosion-proof version equipped with an infrared sensor to detect the combustible gases or CO2
  • OLCT 100 XP HT: High temperature explosion-proof version to detect combustible gases up to 200 °C
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Especially designed for the detection of oxygen, combustible and toxic gases, the OLCT10N digital fixed gas detector ensures reliable and fast concentration levels monitoring. Every information is sent to the gas detection controller in less than a second.

  • Fixed gas detector OLCT10N
  • Detection of CH4, O2, CO, H2S, NO, NO2, NH3.
  • Power supply 12-30 V DC.
  • RS485 Modbus digital signal.
  • Immune to dust and water.
  • ATEX 3 GD, ATEX 2 and 22 approved.
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OLCT10N digital gas detector

Especially designed for the detection of oxygen, combustible and toxic gases, the OLCT10N digital fixed gas detector ensures reliable and fast concentration levels monitoring. Every information is sent to the gas detection controller in less than a second.

Fixed gas detector OLCT10N
  • Detection of CH4, O2, CO, H2S, NO, NO2, NH3.
  • Power supply 12-30 V DC.
  • RS485 Modbus digital signal.
  • Immune to dust and water.
  • ATEX 3 GD, ATEX 2 and 22 approved.
Additional information

Especially engineered for the monitoring and the detection of the most commonly used gases in the  light industry and the tertiary sector (laboratory, hospital, wastewater treatment, refrigerated rooms, boiler rooms…), the OLCT 10N fixed gas detector has been designed to be digitally linked to the MX 43 gas detection controller only. Reliable and featuring a fast response time, the OLCT 10N fixed gas detector can be linked up to 32 detectors on the same digital line, which reduces wiring costs.

 

The OLCT 10N is a reliable digital detector transmitter with fast response time designed to detect oxygen (O2) and toxic gases (CO2, H2S, NH3, NO, NO2) as well as combustible gases such as methane, propane, butane and hydrogen. This detectors uses electrochemical, catalytic or infrared sensors depending on the target gases and the applications.

 

Made of ABS (Acrylonitrile butadiene styrene) material schock and UV resistant and ATEX 3 GD approved, this detector can be used for applications in ATEX zones 2 and 22 and is waterproof and immune to dust (IP65). The OLCT 10N is also compliant with electromagnetic compatibility according to EN50270 standard.

 

The OLCT 10N is a digital fixed gas detector without display with automatic non-intrusive calibration which does not require the housing opening. Manual calibration is possible by opening the OLCT 10N. After a sensor replacement, both manual and automatic calibrations have yet to be conducted. It features two M16 cable gland inputs and a digital signal output RS485 Modbus proprietary.

 

Depending on the density of the target gas or the application, the detector shall be mounted at the ground level, or on the ceiling at the same height as the airflow, or near to the air extraction ducts.

 

In option, this digital detector transmitter can be provided with shock guard protector and/or a calibration tool kit.

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The Honeywell SensePoint fixed gas detector monitors toxic, explosive and oxygen gas concentrations in ATEX zones.

Detection: EXPLO LEL, NH3, Cl2, NO2, SO2, H2, H2S, CO, O2

  • SensePoint Honeywell fixed gas detector
  • Oxygen detector, explosive or toxic gas
  • Excellent value
  • Four-way connection box
  • ATEX certified, IP65
  • Quick and easy installation
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SensePoint fixed gas detector

The Honeywell SensePoint fixed gas detector monitors toxic, explosive and oxygen gas concentrations in ATEX zones.

Detection: EXPLO LEL, NH3, Cl2, NO2, SO2, H2, H2S, CO, O2

SensePoint Honeywell fixed gas detector
  • Oxygen detector, explosive or toxic gas
  • Excellent value
  • Four-way connection box
  • ATEX certified, IP65
  • Quick and easy installation
Additional information

The Honeywell SensePoint fixed gas detector is an economical and efficient gas transmitter for fixed gas detection installations. This equipment measures oxygen, poisonous gases and explosive gases. The SensePoint detector is equipped with high performance Surecell electrochemical and catalytic sensors (0-100% LEL) resistant to interference for maximum reliability.

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Especially designed for use in boiler rooms or parkings, the OLCT10 sensor range is used to monitor presence of explosive vapors and gases or combustion toxic gases in ambient air.

 

  • Fixed gas detector OLCT10
  • Detection of the combustible gases, CO, NO, NO2
  • Power supply: 15 to 30 VDC
  • 4-20 mA linear output
  • Robust, user-friendly and easy to install
  • ATEX II 3 G / EEx nA IIC T4 approved
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ATEX fixed gas detector – OLCT10

Especially designed for use in boiler rooms or parkings, the OLCT10 sensor range is used to monitor presence of explosive vapors and gases or combustion toxic gases in ambient air.

 

Fixed gas detector OLCT10
  • Detection of the combustible gases, CO, NO, NO2
  • Power supply: 15 to 30 VDC
  • 4-20 mA linear output
  • Robust, user-friendly and easy to install
  • ATEX II 3 G / EEx nA IIC T4 approved
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The new MX16 single line gas detection controller from Teledyne Oldham Simtronics connected to a fixed analog or digital gas detector makes it possible to control gas risks in many applications.

  • Oldham MX16 gas controller single channel
  • Choose 4-20 mA analog or RS485 digital input
  • 2 alarm relays (Al1, Al2) + 1 fault relay
  • RS485 output Modbus RTU protocol optional for supervision
  • Data recording (last 512 events)
  • Excellent value
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MX16 single-channel gas controller

The new MX16 single line gas detection controller from Teledyne Oldham Simtronics connected to a fixed analog or digital gas detector makes it possible to control gas risks in many applications.

MX16 gas controller by Oldham
  • Choose 4-20 mA analog or RS485 digital input
  • 2 alarm relays (Al1, Al2) + 1 fault relay
  • RS485 output Modbus RTU protocol optional for supervision
  • Data recording (last 512 events)
  • Excellent value
Additional information

Successor to the MX15, the MX16 single-channel gas controller from Teledyne Oldham Simtronics is ideally suited for small applications: laboratories, hospitals, small boiler rooms, small car parks, charging rooms, breweries, etc.

The MX16 measurement and alarm unit is easy to use and configure. It has a large backlit LCD screen with 2 configurable alarm relays, can store the last 512 events and has an optional Modbus RTU output for connection with a supervisor for example.

Two types of sensors can be connected to this gas controller unit: either analog sensors such as the OLCT10, CTX300, OLCT100 or any other 4-20 mA sensor on the market, or digital sensors such as the OLCT10N series.

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The MX32N digital gas controller is a digital controller and alert management device. As it can be linked to 8 detectors, the MX32N allows monitoring of hazardous gases (combustible, toxic or asphyxiating) in the most demanding environments.

  • Oldham gas detection controller MX32N
  • Two-in-one detector: digital and analog.
  • 1 or 2 independent channels.
  • Continuous monitoring of hazardous gas.
  • 5 alarm thresholds (sound and visual alarms).
  • IP66 protection.
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Digital gas detection controller MX32N

The MX32N digital gas controller is a digital controller and alert management device. As it can be linked to 8 detectors, the MX32N allows monitoring of hazardous gases (combustible, toxic or asphyxiating) in the most demanding environments.

Oldham gas detection controller MX32N
  • Two-in-one detector: digital and analog.
  • 1 or 2 independent channels.
  • Continuous monitoring of hazardous gas.
  • 5 alarm thresholds (sound and visual alarms).
  • IP66 protection.
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Gas detection controller with 4 or 8 analog and/or digital channels (up to 32 detectors allocated to 8 channels) for monitoring gases in the atmosphere.

  • Fixed gas detection controller MX43
  • Many upgrade opportunities (additional cards)
  • 5 alarm levels
  • 5 fully programmable alarm relays + fault
  • Integrated sounder and visual signal
  • Communication: RS 485, proprietary protocol, 9,600 Baud
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Multichannel gas detection controller – up to 43 channels – MX43

Gas detection controller with 4 or 8 analog and/or digital channels (up to 32 detectors allocated to 8 channels) for monitoring gases in the atmosphere.

Fixed gas detection controller MX43
  • Many upgrade opportunities (additional cards)
  • 5 alarm levels
  • 5 fully programmable alarm relays + fault
  • Integrated sounder and visual signal
  • Communication: RS 485, proprietary protocol, 9,600 Baud
Additional information

Especially designed to be flexible, versatile and easy to use, the MX 43 gas detection controller is an analogic and digital controller that allows up to 32 detectors to be distributed on 8 lines.

 

Because of its digital technology and its 8 measuring lines, the MX 43 gas detection controller enables cost savings when wiring a fixed gas detection system. This way, it can combine digital lines and analog channels to fit in any installation type.

 

Its large graphic backlit LCD display is fully customizable by the user and can simultaneously display from 1 to 16 channels. The smart keys enables to navigate the intuitive menus and easy operation.

 

This gas detection controller is available both in wall-mounted version or rack version and is made to manage any 4-20 mA or digital contact signals in order to control a whole installation. Moreover, as it is fully configurable by the user with the dedicated COM 43 software, the MX 43 gas detection controller enables operators to reach advanced functions and easier and faster setup. It is yet highly recommended to firstly follow a specific training before using this computer embedded application.

 

Its integrated datalogger can store up to 512 events. Furthermore, thanks to a dedicated USB port, the MX 43 can also record data with a frequency from 2 seconds up to 15 minutes. The provided 4GO USB stick offers a storage capacity for 2 years in almost any configurations. This stick enables real-time recording of every event but also to automatically save the device configuration and internal software.

 

This multichannel gas detection controller is IP 55 approved in wall mounted version and IP 31 approved in rack version. It features 5 alarm levels, 5 fully programmable alarm relays and one fault relay and an audiovisual alarm (integrated beacon and siren).

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The TouchPoint Plus gas detection controller can connect up to 8 fixed gas monitors (and 8 additional entries thanks to its extension module). Whith large touchscreen, customizable alarms and dedicated powered outputs.

  • touchpoint plus gas detection controller by honeywell
  • Up to 16 linked detectors
  • Integrated safety battery
  • Self-diagnosis and system reports
  • Customizable alarm relay outputs
  • Large 17.7″ touchscreen, IP65, NEMA 4X
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2 to 16 channels gas detection controller TouchPoint Plus

The TouchPoint Plus gas detection controller can connect up to 8 fixed gas monitors (and 8 additional entries thanks to its extension module). Whith large touchscreen, customizable alarms and dedicated powered outputs.

touchpoint plus gas detection controller by honeywell
  • Up to 16 linked detectors
  • Integrated safety battery
  • Self-diagnosis and system reports
  • Customizable alarm relay outputs
  • Large 17.7″ touchscreen, IP65, NEMA 4X
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Manual reset safety solenoid valve for 500 mbar maximal pressure

  • Gas solenoid valve ELK600
  • Connection: thread F/F gas (3/8” à 2”) – flanged PN16 UNI2223 (DN65 to DN150)
  • Power supply: 230V (upon request: 110V – 50/60 Hz / 12-24 V – AC/DC)
  • Opening/closure time < 1 second
  • operating pressure: 500 mbar
  • End of course upon request
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Manual reset gas solenoid valve – ELK600

Manual reset safety solenoid valve for 500 mbar maximal pressure

Gas solenoid valve ELK600
  • Connection: thread F/F gas (3/8” à 2”) – flanged PN16 UNI2223 (DN65 to DN150)
  • Power supply: 230V (upon request: 110V – 50/60 Hz / 12-24 V – AC/DC)
  • Opening/closure time < 1 second
  • operating pressure: 500 mbar
  • End of course upon request
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Manual reset safety solenoid valve for 360 mbar maximal pressure

  • Gas solenoid valve ELK700
  • Connection: thread F/F gas (3/8” à 2”) – flanged PN16 UNI2223 (DN65 to DN150)
  • Power supply: 230V (upon request: 110V – 50/60 Hz / 12-24 V – AC/DC)
  • Opening/closure time < 1 second
  • operating pressure: 360 mbar
  • Complies with EN161
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Automatic reset gas solenoid valve – ELK700

Manual reset safety solenoid valve for 360 mbar maximal pressure

Gas solenoid valve ELK700
  • Connection: thread F/F gas (3/8” à 2”) – flanged PN16 UNI2223 (DN65 to DN150)
  • Power supply: 230V (upon request: 110V – 50/60 Hz / 12-24 V – AC/DC)
  • Opening/closure time < 1 second
  • operating pressure: 360 mbar
  • Complies with EN161
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Air - gas pressure switch for vapor, hot water, combustible gas and liquids.

  • gas pressure switch for gas safety
  • Maximum 63 bar pressure
  • DIN connection
  • High precision
  • SPDT single pole double throw switch
  • CE Marked
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Low pressure switch DWR

Air - gas pressure switch for vapor, hot water, combustible gas and liquids.

gas pressure switch for gas safety
  • Maximum 63 bar pressure
  • DIN connection
  • High precision
  • SPDT single pole double throw switch
  • CE Marked
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The BSVD safety box is designed to protect taps and gas relief valves.

  • Emergency box BSVD
  • Safety box available in 6 different sizes to meet any application
  • High-visibility red color – extremely resistant to corrosion and bleaching
  • Materials: sheet steel, Plexiglas
  • Optional emergency hammer
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Safety box – BSVD

The BSVD safety box is designed to protect taps and gas relief valves.

Emergency box BSVD
  • Safety box available in 6 different sizes to meet any application
  • High-visibility red color – extremely resistant to corrosion and bleaching
  • Materials: sheet steel, Plexiglas
  • Optional emergency hammer
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