Omega FMA 4000 - Manual (Page 6)

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CAUTION: FMA 4000 TRANSDUCERS SHOULD NOT BE USED FOR
MONITORING OXYGEN GAS UNLESS SPECIFICALLY CLEANED AND
PREPARED FOR SUCH APPLICATION.
For more information, contact Omega
7
.
Attitude limit of the Mass Flow Meter is ±15
F
from calibration position (standard
calibration is in horizontal position). This means that the gas flow path of the Flow
Meter must be within this limit in order to maintain the original calibration accura-
cy. Should there be need for a different orientation of the meter, re-calibration may
be necessary. It is also preferable to install the FMA 4000 transducer in a stable
environment, free of frequent and sudden temperature changes, high moisture,
and drafts.
Prior to connecting gas lines inspect all parts of the piping system including fer-
rules and fittings for dust or other contaminant’s.
When connecting the gas system to be monitored, be sure to observe the direc-
tion of gas flow as indicated by the arrow on the front of the meter.
Insert tubing into the compression fittings until the ends of the properly sized tub-
ing home flush against the shoulders of the fittings. Compression fittings are to be
tightened to one and one quarter turns according to the manufacturer's instruc-
tions. Avoid over tightening which will seriously damage the Restrictor Flow
Elements (RFE's)!
CAUTION: For FMA 4000 model, the maximum pressure in the
gas line should not exceed 500 PSIA (34.47 bars). Applying pressure above
500 PSIA (34.47 bars) will seriously damage the flow sensor.
FMA 4000 transducers are supplied with either standard 1/4 inch, or optional 1/8
inch inlet and outlet compression fittings which should NOT be removed unless
the meter is being cleaned or calibrated for a new flow range.
Using a Helium Leak Detector or other equivalent method, perform a thorough
leak test of the entire system. (All FMA 4000's are checked prior to shipment for
leakage within stated limits. See specifications in this manual.)
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