Engine air Bleed Controller maintains a constant outlet pressure, independent of
engine speed. Built into a metal instrument case with a heavy duty carry handle, it is
portable and suitable for bench top mounting. Between idle and maximum engine
speed, bleed air flow rate and line pressure changes dramatically, yet needs to be
analysed for particulate or lubricant contamination. High flow rates or pressures can
seriously damage sensitive analytical equipment, but using the EBC operators can
select the outlet pressure (typically <100 mbar above atmospheric) to suit the inlet
pressure of their analyser. Sample flow rate is normally dictated by the analyser, but
can be incorporated into the EBC if required.

Operation

The EBC should be connected to a suitable mains power source and left to warm up
for 30 minutes before use, after which time the pressure sensor should be zeroed
using the front panel display. Two hose barbs on the rear panel allow connection of
the air bleed supply and an exhaust vent line from the pressure controller. A similar
barb on the front panel allows the outlet to be connected to the analyser. At idle speed
the outlet pressure can be read from the front panel display and adjusted using a
recessed potentiometer, which reduces the risk of tampering.