CALABRATORS AND STANDARDS

Calibrators for low ranges of differential pressure

FCO501

The FCO501 Pressure Supply Unit is a self contained pressure source. It is designed to supply very stable differential and gauge pressures for calibration, typically with the Furness Controls PPC500 Pressure Calibrator.

The FCO501 has an internal air pump to supply a constant flow to two manual control valves. the Coarse Adjustment valve sets the full scale pressure, which may be as low as a few Pascals up to a maximum of 20kPascals. The Fine Adjustment valve is then used to set the required calibration steps. the ON/OFF valve allows the output to be zeroed without disturbing the setting.

When the unit is used in differential mode a special system, developed by Furness Controls, greatly reduces pressure instability caused by external pressure variations due to either unstable atmospheric conditions or to local effects such as doors being opened and closed.