Omega 3400 Manual De Usuario
M-4271/0707, pg. 24 of 26
Symptom
Possible Cause
Method of Correction
Insufficient or varying power
Check the power supply
output and increase if
necessary
output and increase if
necessary
Insufficient pressure
Ensure the pressure (an
differential pressure) is high
enough o operate the unit.
enough o operate the unit.
Varying pressure
Check the stability of the
pressure regulation and
improve if necessary.
pressure regulation and
improve if necessary.
Ambient temperature too high
or too low
or too low
Place the unit in a suitable
environment
environment
Output load resistance too low
Ensure the voltmeter or
data acquisition system or
display has an impedance of
greater than of 2.5kohm
data acquisition system or
display has an impedance of
greater than of 2.5kohm
Gas temperature too high or
too low
too low
Ensure the gas temperature
is within the recommended
operating range
is within the recommended
operating range
Inaccurate control
Unit damaged or faulty
Contact Omega Engineering
Gas flow through unit not
completely stopped
completely stopped
Ensure there is no flow
through the unit. The
easiest way to do this is to
through the unit. The
easiest way to do this is to
plug both the inlet and
outlet.
outlet.
Severe fluctuations in the
ambient temperature e.g. unit
ambient temperature e.g. unit
in direct sunlight
Carry out the rezero
procedure in a stable
procedure in a stable
environment
Unstable power supply
Check the stability and
suitability of the power
suitability of the power
source
Problems with
rezeroing
rezeroing
Insufficient warm-up period
Allow the unit to warm-up
for at least 5 minutes.
for at least 5 minutes.