Panel controls include an ‘Emergency Stop’, ‘Mute’ and ‘Reset’ buttons.

In the event of a high alarm from one of the sensors, the system will isolate a connected control valve. A low alarm indication is also given.Separate terminals and LED’s for ‘EM Stop’ and ‘Fire Alarm’ circuits provide clearer indication when activated.Settable change over mains rated relay can be used to activate a beacon/sounder, remote indication or signal to a BMS system.

If you require further information about this product please call us on 0161 233 0600 or email at enquiries@medem.co.uk and we'll be more than happy to help.

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Remote Stop Buttons can be installed with all our systems for convenience and safety. To find out more about the product please download the 'EM-Stop Wiring details'.

If you require further information about this product please call us on 0161 233 0600 or email at enquiries@medem.co.uk and we'll be more than happy to help.

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It provides key operated control for switching and isolation and available for Gas, Water, Oil and Electric control.

Features and Details:

• Panel mount emergency stop and removable key.
• Two mains rated (5 amp max) relays which change state in conjunction with the key switch.
• A 12-volt output and provision for additional remote emergency stop buttons where required.

If you require further information about this product please call us on 0161 233 0600 or email at enquiries@medem.co.uk and we'll be more than happy to help.

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IMPORTANT – Gas Detectors should not be installed until all building, construction or painting work, etc. Is completed, as these works can affect the sensitivity and longevity of the detectors.

Currently, they include:

• Methane CH₄ (natural gas)
• Propane C₃H₈ (LPG)
• Carbon Monoxide (CO)
• Carbon Dioxide (CO₂)
• Oxygen O₂ (both for enrichment and depletion)
• Hydrogen (H)
• Chlorine (CL)
• Nitrogen Dioxide (NO₂)
• Hydrogen Sulphide (H₂S)

Coming soon:

• Ammonia (NH₃)
• Acetylene (C₂H₂)
• Phosphine (PH₃
• Pentene (C₅H₁₀)

Detector Siting
When considering the placement of fixed-point gas detectors several factors must be taken into consideration including (but not limited to):

• The gas type.
  
• What the potential source is.
• The shape of the area i.e. roof peaks or sunken areas).
  
• Obstructions that could lead to “dead spaces”.
• Thermal links, remote EM stop buttons and a fire alarm input can all be monitored.
  
• Airflow – either natural or mechanical.

The underlying point is that the gas must reach the sensor in order for it to be detected, therefore each installation must be considered on its own merits and the information contained here is to be used as guidance only.

Carbon Dioxide
Medem's CO₂ detection is designed to deal with its production either via cooking or biological processes (namely breathing).
CO₂ is roughly equal weight and density as air it will therefore naturally diffuse equally within a space. Our CO₂ detectors are for the purpose of monitoring the air quality within an area to ensure adequate ventilation is taking place, as such the detectors should be located with the main body of the room within the “breathing zone” (4 to 8 feet) but not in such a place they'd likely be exposed to a potential release point (i.e. someone breathing on it). The alarm levels are dependent on application with different levels being specified for education facilities and for commercial kitchens, these are set within Medem's control panels and not the detector themselves.

Methane
A colourless gas which is a lighter than air gas and will, therefore, tend to rise when released to the atmosphere. Detector location should be at a high level. Detectors are set to alert at a pre-alarm level of 5% LEL and high-alarm of 10% LEL.

Propane
A colourless gas which is heavier than air gas and will therefore sink and stay at a low level when released to the atmosphere. Detector location should be at lower levels (approx 20 cm to 30cm from the floor). Detectors are set to alert at a pre-alarm level of 5% LEL and high-alarm of 10% LEL.

Carbon Monoxide
A colourless and odourless gas CO is roughly equal weight and density as air it will diffuse equally within a space. That said CO is typically produced as a product of poor combustion and as such can be initially excepted to rise as it will be hotter than the surrounding ambient temperature. Detector location is normally close by (but not immediately next to) the potential source – be that a boiler or ducted vent etc. Detectors are set to pre-alarm at 80ppm and high-alarm at 100ppm.

Oxygen
Oxygen forms some 21% of our atmosphere. At Medem, we primarily deal with oxygen depletion with a pre-alarm at 19% and high-alarm at 18%.
Although we have produced detectors for oxygen enrichment alarm levels would have to be decided on after discussion of the application.

If you require further information about this product please call us on 0161 233 0600 or email at enquiries@medem.co.uk and we'll be more than happy to help.

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All Medem control panels have the capacity to be connected to a fire panel, so in the event of an alarm, our systems can isolate the gas supply.

Although a vital safety feature it can prove inconvenient when testing and servicing the fire alarm system.

The FTIP-1 is designed to sit between our standard gas control systems and the fire alarm panel. When activated it will isolate the two systems from each other allowing the fire alarm to be tested without interrupting the gas supply.

This is a key controlled and timed (max 45 min) isolation, that if not manually reset will do so automatically after the period set during installation.

Please Note:
FTIP-1 function is built into the SEC range of panels.

If you require further information about this product please call us on 0161 233 0600 or email at enquiries@medem.co.uk and we'll be more than happy to help.

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Six Medem detectors can be connected (16 with a power pack) for the detection of natural gas, LPG, or carbon monoxide, carbon dioxide and oxygen depletion.

In the event of a high alarm from one of the detectors, the system will isolate a connected control valve. Low alarm indication is also given.

Even with the system switched off It can still be used to monitor for carbon monoxide and carbon dioxide via its 0-10v output and BMS relays. Should there be an issue from a solid fuel appliance it can raise an alarm or switch ventilation on via a relay.

The OLED will display appropriate information about alarm situations and detector status.

There are multiple relays which can be used to control remote indications, connect to a BMS system or activate a fan.

See the AGDS-MCM panel for a 'non-latching' version which can be used for the control of ventilation systems i.e. indoor car parks on CO detection.

If you require further information about this product please call us on 0161 233 0600 or email at enquiries@medem.co.uk and we'll be more than happy to help.

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In the event of a high alarm from one of the sensors, the system will isolate/close any connected valve. A low alarm indication is also given.

Remote emergency stop buttons can be fitted and a fire alarm connected to close the gas valve when activated.

Two change over relays for remote indications or connection to a BMS system.

If you require further information about this product please call us on 0161 233 0600 or email at enquiries@medem.co.uk and we'll be more than happy to help.

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Currently, they include:

• Carbon Dioxide (CO₂)
• Methane CH₄ (natural gas)
• Carbon Monoxide (CO)
• Oxygen O₂ (both for enrichment and depletion)
• Combined Carbon Dioxide (CO₂) & Carbon Monoxide (CO)

Detector Siting
When considering the placement of fixed-point gas detectors several factors must be taken into consideration including (but not limited to):

• The gas type.
  
• What the potential source is.
• The shape of the area i.e. roof peaks or sunken areas).
  
• Obstructions that could lead to 'dead spaces'.
• Thermal links, remote EM stop buttons and a fire alarm input can all be monitored.
  
• Airflow – either natural or mechanical.

The underlying point is that the gas must reach the sensor in order for it to be detected, therefore each installation must be considered on its own merits and the information contained here is to be used as guidance only.

Carbon Dioxide
Medem's CO₂ detection is designed to deal with its production either via cooking or biological processes (namely breathing).
CO₂ is roughly equal weight and density as air it will therefore naturally diffuse equally within a space. Our CO₂ detectors are for the purpose of monitoring the air quality within an area to ensure adequate ventilation is taking place, as such the detectors should be located with the main body of the room within the 'breathing zone' (4 to 8 feet) but not in such a place they'd likely be exposed to a potential release point (i.e. someone breathing on it). The alarm levels are dependent on application with different levels being specified for education facilities and for commercial kitchens, these are set within Medem's control panels and not the detector themselves.

Methane
A colourless gas which is a lighter than air gas and will, therefore, tend to rise when released to the atmosphere. Detector location should be at a high level. Detectors are set to alert at a pre-alarm level of 5% LEL and high-alarm of 10% LEL.

Propane
A colourless gas which is heavier than air gas and will therefore sink and stay at a low level when released to the atmosphere. Detector location should be at lower levels (approx 20 cm to 30cm from the floor). Detectors are set to alert at a pre-alarm level of 5% LEL and high-alarm of 10% LEL.

Carbon Monoxide
A colourless and odourless gas CO is roughly equal weight and density as air it will diffuse equally within a space. That said CO is typically produced as a product of poor combustion and as such can be initially excepted to rise as it will be hotter than the surrounding ambient temperature. Detector location is normally close by (but not immediately next to) the potential source – be that a boiler, ducted vent, etc. Detectors are set to pre-alarm at 80ppm and high-alarm at 100ppm.

Oxygen
Oxygen forms some 21% of our atmosphere. At Medem, we primarily deal with oxygen depletion with a pre-alarm at 19% and high-alarm at 18%.
Although we have produced detectors for oxygen enrichment alarm levels would have to be decided on after discussion of the application.

If you require further information about this product please call us on 0161 233 0600 or email at enquiries@medem.co.uk and we'll be more than happy to help.

The post CO₂ Gas Detectors appeared first on Medem UK Ltd..

A low alarm indication is given on the control panel including 'Mute', 'Reset'. There are two change over mains rated relays which can be used to activate a beacon/sounder, a fan or signal to a BMS system.

Each relay is able to be set to report one of the below statuses:

• Low Alarm
• High Alarm
• Detector Fault
• Generic Alarm

If you require further information about this product please call us on 0161 233 0600 or email at enquiries@medem.co.uk and we'll be more than happy to help.

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Gas Pressure Proving
Using the patented differential pressure proving method the system checks the gas pipework and appliances in a kitchen for gas leaks. It also monitors for low pressure and overpressure without opening the solenoid valve, making it the only truly safe method of proving available.

Auto-restart after power failure and fire alarm
The SEC-B can auto reset after an electricity supply failure or after a fire alarm has been manually reset when used in boiler room applications. This enables a building heating system to restart without manual intervention, minimising the chance of frozen pipes and a cold building.

Features and Details:

• Gas proving
• Gas detection
• Electrical isolation
• Auto-restart after power failure
• Auto-restart after a fire alarm reset

If you require further information about this product please call us on 0161 233 0600 or email at enquiries@medem.co.uk and we'll be more than happy to help.

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