Modular Gas Detection Systems (M.G.D.S.)

The CDK Modular Gas Detection System provides a flexible and scalable solution to meet a variety of gas detection and alarm requirements. Economical, easy to install and low maintenance the MGDS gas detection system provides the best choice for a reliable gas detection system to meet regulatory compliance.

The FGAS regulation defines an automatic leakage detection system as:

"A calibrated mechanical, electrical or electronic device for detecting leakage of fluorinated greenhouse gases which, on detection alerts the operator".

Each monitoring point consists of an interface (receiver) and up to two sensors (transmitters) for improved coverage of monitored areas. Each interface will act as a standalone unit providing multilevel alarm triggers and local annunciation with siren and beacon options.

Sensors use infra-red detection technology for improved accuracy and continuous PPM readings, two-way digital communications to the interface eliminates signal interference and provides sensor disconnection detection. Wide ranges of protocols are available for third party integration or a CDK marshalling unit is available for a complete system solution.

Individual sensors are calibrated for target gas and are interchangeable with any interface, providing low cost upgrades for refits and gas swap outs.

UPS options are available for continuous monitoring in critical areas.

The system can be programmed to monitor the most common gases - HCFC, HC and CO2, should a specific gas type not be available then please contact the office to discuss your requirements.


MGDS Interface

Each interface will connect to two sensors, this enables improved coverage of monitored areas, for example inside and outside a cold room (valve station/riser), high and low sensing points on a pack.

Although the interface has been designed to operate as a stand-alone unit it will also connect to third party equipment. Sensors are configurable to operate in slave mode enabling central control systems to manage all alarm activities, however in the event of a communications failure the sensor will return to ‘master’ mode and operate in stand-alone mode.

MGDS interfaces come in 3 different enclosures, a 350mm x 160mm metal enclosure for most requirements, a 290mm x 240mm ip 67 rated enclosure for outdoor and internal chilled areas, and a 344mm x 289mm plastic enclosure with relays for multiple outputs (beacons and sirens).

The power requirements for the MGDS interface are either 230v or 24v. For the 24v option CDK utilise power over ethernet.

CDK also offer the option of adding an external push button to test the alarm system before entering a specific monitored zone to assure it is working correctly.


MGDS Sensor

The sensor assembly is supplied as a sealed unit with external fixings, a two-part IP67 rated Hirschmann connector with 5-metre+arctic grade cable ensures that installation, maintenance and serviceability are simple and cost effective. It is recommended that sensors be installed within 30m of the interface, if longer distances are required please contact the office.

Sensors are supplied pre calibrated for the target gas, each is individually serialised and labelled with gas type and calibration date, providing visibility of compliance. Sensors are available as IR or filtered semiconductor.

Sensors use a serial protocol to communicate with the interface, this removes any potential inaccuracies due to interference, but also enables the interface to detect sensor disconnections and alarm accordingly.