Fox Thermal FT3 Instrukcja rozwiązywania problemów - Strona 6
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Electronics Enclosure
Terminal numbers
No Connection
6. Confirm the sensor resistances are correct.
Turn off power to meter and disconnect sensor wires from TS8 (the sensor termination terminal strip
•
located at the bottom of FT2A main board) before taking measurements.
Sensor wiring: White to White wires = 200 to 225 ohms, Red to Red = 0.1 ohms, Red to Yellow = 9 to 10
•
ohms.
Section B: FT2A Measurement Accuracy and Calibration
7. Close the display. Are the readings taken from the flow meter display or from a different source (PLC, DCS,
etc)? The 4mA and 20mA scaling in the PLC or DCS must match the flow meter's settings. If you are using the
4-20mA output, also confirm that the measurement unit (SCFM, KG/HR, NM3H, etc.) in the Fox meter is the
same as in your PLC/DCS.
8. Is the composition of the gas you are measuring the same as is shown on the flow meter calibration
certificate?
9. Check insertion depth, is the end of the sensor window 0.87" (22.098 mm) past the center line of the pipe (see
image on next page)?
F-184, Rev A
Extension Cable
Wire Color
1
2
Black
3
Brown
Shield
4
White
5
Green
Remote Enclosure
Terminal Numbers
Red
831.384.4300 | 399 Reservation Rd, Marina, CA 93933 |
Sensor Wire
Color
1
Red
2
Red
3
Yellow
4
Green
5
White
6
White
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