BRONKHORST ES-FLOW 1 C Series, Инструкция по эксплуатации

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Bronkhorst®
Instruction Manual ES-FLOW™ 1xxC 9.17.153A 38
Symptom Possible cause Corrective action
Red LED lit continuously, no flow Hardware error Contact your Bronkhorst representative
·
Control behavior unstable
·
Red LED flickering
Measurement disturbed by
vibrations
·
If possible, avoid installation in close
proximity of mechanical vibration
·
Reduce sensitivity to vibrations by using a
mass block, shock absorbers, and flexible
tubing
Inlet pressure unstable Install pressure regulator or increase buffer
volume between controlling instruments
Inlet and/or outlet pressure too
high or too low
Adjust pressure and/or set instrument pressure
in accordance with actual process pressure (e.g.
with FlowTune™)
Wrong process gas selected Select correct process gas (e.g. with FlowTune™)
Gas accumulation in tubing Remove gas from liquid tubing (see First use )
Wrong controller settings Adjust settings (e.g. with FlowPlot)
Control valve damaged Contact your Bronkhorst representative
No flow (sending a setpoint has no
effect)
No fluid supply Check upstream components for obstruction,
e.g.:
·
fluid lines
·
valves
·
filters
Setpoint too low
Actuator cable not connected or
damaged
Check actuator cable
Valve(s) in default state (normally
closed)
Check if valves are in default/safe state; solve
cause if necessary (see Default valve state )
Inlet pressure or differential
pressure out of bounds
Set inlet pressure to a value within
specifications
Flow rate never reaches setpoint ·
Piping, filters and/or control
valve clogged or blocked
·
Sensor obstructed or
contaminated
Flush fluid system with clean, dry air or non-
aggressive cleaning liquid (e.g. ethanol or
isopropyl alcohol)
Inlet pressure or differential
pressure too low
·
Check/increase inlet pressure
·
Use instrument in conditions it was designed
for
Outlet pressure too high ·
Check/decrease outlet pressure
·
Use instrument in conditions it was designed
for
Process outlet blocked Check process outlet and downstream piping
Process gas condensation Decrease inlet pressure or increase gas
temperature
Supplied fluid type does not match
selected fluid type
Supply equipment with other fluid or change
fluid type in instrument configuration
Pressure signal gradually
decreasing without setpoint
change
Process gas condensation Decrease inlet pressure or increase gas
temperature