BVT3000 Version 003 BRUKER 11 (67)
Gas flow circuit
Gas flow circuit 1.6
On the rear panel a pressure regulator delivers gas at constant pressure to a
group of valves. Each valve, when open, allows the gas to flow through a calibrat-
ed hole. As all valves are in parallel, it is possible to obtain 15 different gas flow
rates.
The regulator is factory-adjusted to obtain approximately 2000 l/h when all valves
are open.
The default value at «POWER ON» can be changed by hardware jumpers (JP6 to
JP9) see figure
"Valve jumpers settings" on page 45
.
On the front panel a gas flow meter with a steel ball indicates the actual gas flow.
An optical barrier at the bottom detects a missing gas flow.
Figure 1.4. Gas flow circuit
Settingupthegasflow 1.6.1
Connect the BVT3000 gas input to a dry air or N2 gas line. The input pressure
should be at least 4 bar and must not exceed 8 bar. Power on the BVT3000. The
default value of the flow rate is set according to the position of jumper JP6 to JP8.
The gas flow rate can also be changed by software in the «EDTE» program.
GAS
FLOW
SENSOR
GAS FLOW REDUCERPRESSURE REGULATOR
GAS IN
VALVE CONTROL
VALVE
GAS OUT
VALVE BLOCK
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