Справочник Пользователя для Omega fma 1400
2
It is also preferable to install the FMA 1400/1500 transducer in a stable environment,
free of frequent and sudden temperature changes, high moisture, and drafts.
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 contaminants.
rules and fittings for dust or other contaminants.
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.
of the meter when connecting the gas system to be monitored.
Insert tubing into the compression fittings until the ends of the properly sized tub-
ings 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 tightening which will seriously damage the Restrictor Flow
Elements (RFE's)!
ings 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 tightening which will seriously damage the Restrictor Flow
Elements (RFE's)!
FMA 1400/1500 transducers are supplied with standard 1/4 inch (FMA 1400/1500
for ranges up to and above 10 L/min) or 3/8 inch (FMA 1400/1500 for ranges
above 10 L/min), 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.
for ranges up to and above 10 L/min) or 3/8 inch (FMA 1400/1500 for ranges
above 10 L/min), 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 1400/1500's are checked prior to shipment
for leakage within stated limits. See specifications in this manual.)
leak test of the entire system. (All FMA 1400/1500's are checked prior to shipment
for leakage within stated limits. See specifications in this manual.)
2.2
Electrical Connections
FMA 1400/1500 transducers require a +15VDC and -15VDC power supply to
operate. Additionally, a readout panel meter, digital multimeter, or other equiva-
lent device is required to observe the flow signal. A variable analog 0-5VDC ref-
erence input is required for FMA 1400 models. The Omega
operate. Additionally, a readout panel meter, digital multimeter, or other equiva-
lent device is required to observe the flow signal. A variable analog 0-5VDC ref-
erence input is required for FMA 1400 models. The Omega
7 FMA14PD Series
accessory Command Modules offer a convenient and compact means to fulfill
these needs.
these needs.
FMA 1400/1500 transducers come with a 15 pin "D" connector. The pin diagram
is provided on figure 2-3.
is provided on figure 2-3.