Product Range

Laboratories

IGE/UP/11 was published on 1 st October 2004with a lead in period until 1 st January 2005.           Firewatch Mk2 (gas only) and Firewatch Mk 5 (gas water and electricity)

Commercial Kitchens

BS 6173 : 2001 was published on 15 May 2001 with a lead in period of 3 months.            Firewatch Mk 6 (duplex airflow monitoring) and Firewatch Mk 7 (standard supply and extract monitoring).            Other units and bespoke special units can be provided on request.

 

Gas valves

All gas valves are to the industry standard BS EN 161 preassembled and tested before being despatched. They are available in from ½” to 2½” (15mm to 65mm) screwed BSP female and from 2½” to 10” (65mm to 250mm) flanged to PN 16.

 

Ancillary equipment

The preferred method of detecting the airflow is by a differential pressure (DP) switch across the fan. The problem occurs when a roof mounting fan is installed which has no outlet ducting. In this instance only one side of the DP switch diaphragm can be connected which may not have sufficient pressure to operate reliably. The other methods of monitoring the system are to use paddle switches (not liked on extract due to the fear of the paddle sticking in the flow proved position but acceptable on air supply systems), Current transformers (though these do not necessarily prove whether the filters are blocked or a belt drive has broken) or a Calorimetric sensor which operates like a hot wire anemometer proving airflow and adjustable in the range of 1to 10 m/s and suitable up to +50 0C.

Versions available for either line pressure testing or isolation only, boiler house emergency shutoff, multiple utilities (gas, water electricity) and interfacing with other control systems.

 

Gas Detection Systems

We can provide gas detection systems for use in boiler house or enclosed area monitoring. Panels are available for single sensor, 1 to 4 sensor or a rack mounting multisensor system providing individual fault output for each sensor head. The system comprises a control panel in the ‘safe’ area to give indication and to provide volt free control contacts and a gas detector head in the sensed area. The sensor head can be either a broad spectrum flammable gas sensor or a more specific sensor for CO, LPG etc. They can all be used in conjunction with the gas isolation equipment to provide a total system.