Electrical Connections - Omega FMA1700A User Manual

CAUTION: IT IS THE USERS RESPONSIBILITY TO DETERMINE IF THE
INSTRUMENT IS APPROPRIATE FOR THEIR OXYGEN APPLICATION, AND FOR
SPECIFYING O
FOR ANY DAMAGE OR PERSONAL INJURY, WHATSOEVER, RESULTING FROM
THE USE OF THIS INSTRUMENT FOR OXYGEN GAS.
Attitude sensitivity of the Mass Flow Meter is ±15. This means that the gas flow
path of the Flow Meter must be horizontal within those stated limits. Should there
be need for a different orientation of the meter, re-calibration may be necessary. It
is also preferable to install the FMA1700A/1800A transducer in a stable environ-
ment, 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.
Be sure to observe the direction of gas flow as indicated by the arrow on the front
of the meter when connecting the gas system to be monitored.
Insert tubing into the compression fittings (except FMA1700A/1800A Series Max
Flow 1000 L/min) until the ends of the properly sized tubings home flush against
the shoulders of the fittings. Compression fittings are to be tightened according to
the manufacturer's instructions to one and one quarter turns. Avoid over tighten-
ing which will seriously damage the Restrictor Flow Elements (RFE's)!
Using a Helium Leak Detector or other equivalent method perform a thorough
leak test of the entire system. (All FMA1700A/1800A are checked prior to ship-
ment for leakage within stated limits. See specifications in this manual.)
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Electrical Connections

CAUTION: Some of the IC devices used in the FMA1700A & FMA1800A are
Electro Static Discharge (ESD) sensitive and may be damaged by improper
handling. When wiring interface connector, adjusting or servicing the meter,
use of a grounded ESD protection wrist strap is required to prevent inadver
tent damage to the CMOS integral solid state circuitry. When 9 pin interface
D-connector is not used do not remove factory installed ESD protection cover.
CAUTION: WIRING THE FMA1700A & FMA1800A METER WITH THE POWER
ON MAY RESULT IN INTERNAL DAMAGE! PLEASE MAKE ALL WIRING
CONNECTIONS BEFORE SWITCHING ON THE POWER.
All FMA1700A & FMA1800A models require power supplies with nominal current
rating of at least 200 mA. The operating power input is supplied via the DC power
jack or the 9-pin "D" connector located at the side of the flow transducer enclosure.
On FMA1700A & FMA1800A's purchased without an LCD readout, a readout
panel meter, digital multimeter, or other equivalent device is required to observe
the flow signal.
CLEANING SERVICE IF REQUIRED. OMEGA IS NOT LIABLE
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