All the functionality of the GPPS-L, but now with CO2 monitoring.

GPPS-L-CO2, in response to changing legislation we’ve redesigned our popular GPPS-L system to combine it with CO2 monitoring.

The GPPS-L-CO2 is designed for use both where gas taps could be left open to atmosphere in a gas line, such as a laboratory and the monitoring of CO2 levels is required.

CO2 is now considered a primary indicator of air quality, with the latest legislation setting maximum limits for levels within education facilities.

Department of Education building bulletin 101 (BB101), the supporting document to the building regulations part F. The BB101 states that the maximum level of carbon dioxide in the air within a classroom should be no more than 1,500 parts per million (PPM).

As with all our gas pressure proving systems it employs our patented technology to measure the pressure differential across the solenoid valve when performing a downstream integrity check. This method stops nuisance tripping of the gas supply. The addition of the LCD makes this system very easy to use. The LCD displays clear messages giving real information rather than just LED indications.

An auto-stop timer is incorporated to help prevent unauthorized use of the gas out-of-hours.

From within the panel the engineer has several ‘engineer functions’ which can be used to aid in the setup of the system – such as displaying in real time both the inlet and outlet pressure at the gas valve (mbar) and the ability to power the valve at a button press, it’s with functions like these that for example a ‘valve let by indication’ check be performed with ease.

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




This product is no longer available. If you need assistance with an already installed unit, please get in touch and we’ll help.


All our products come with a 5-year warranty
Medem’s industry leading five-year warranty is a demonstration of the company’s confidence in the quality and design of its products.
This applies to the main panels and sender units, gas detectors carry a 2-year warranty.

Why not let us install your system and receive a 10-year Warranty?
Where we’ve commissioned an installed system, the warranty is extended from five to ten years. At the time of commissioning, photos and gas pressure readings are recorded along with other relevant details of the installation. A 24-hour helpline number and the serial number is attached with the panel and all details are then entered on to the Medem database.