Omega FMA1001A series, User Manual

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3-1
Installation
3
Section 3 - Installation
1. Remove the protective cap from the sensor tip.
2. Run a length of straight pipe before and after the flow sensor probe.
The amount of upstream straight pipe required depends on the type of
obstruction which is immediately upstream of the flow sensor. See Table 1
for specific requirements. Downstream of the flow sensor, in all situations,
run 5 diameters of straight pipe regardless of the downstream obstruction.
3. Align the sensor probe with the air flow. Make sure the air flow is
perpendicular to the sensor window. The score line on the sensor tubing
is another way of aligning the sensor to the flow stream. The score line
starts from the center of the sensor window and as a result it can be aligned
properly.
4. One way of installing the sensor probe into a flow stream is to utilize a
compression fitting such as Omega’s SSLK-14-14 stainless steel compression
fitting with Teflon ferrule, which allows adjustment of the insertion depth of
the probe.
5. Connect the 15 feet shielded Power/Output cable to the transmitter’s 10-pin
male mating connector. Follow the wiring information below:
Power/ Output Cable Wire Connection
Red + Power Input
Black - Power Input (Common Ground)
White Velocity Analog Output referenced to Common Ground
Green Temperature Analog Output referenced to Common Ground
Brown High Alarm voltage output-Velocity
Blue Low Alarm voltage output-Velocity
Shield Earth Ground
USB Connector PC USB Port
Power/output Cable Wiring