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TTFM 1.0 Transit Time Flow Meter
SENSOR CABLE RESISTANCE TEST
Unplug the green sensor terminal from the Transit Time board and connect the sensor wires. With a
multimeter, perform resistance checks for each set of wires. One single loose terminal may cause false
readings.
Test across shield and core of each wire: TDR1 (black) and TDR2 (black/white). Resistance should be
around 10K ohms for any cable length. High readings indicate an open circuit and low readings indicate
a short or partial short in the sensor cable connections.
Note: The TTFM 1.0 will automatically detect connectivity to the sensors. Confirm that TTFM 1.0
indicates “
Sensor
Good
’ in the messages menu.
Содержание TTFM 1.0
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Страница 4: ...Page 4 TTFM 1 0 Transit Time Flow Meter SENSOR INSTALLATION ...
Страница 6: ...Page 6 TTFM 1 0 Transit Time Flow Meter CONNECTIONS ...
Страница 9: ...Page 9 TTFM 1 0 Transit Time Flow Meter CALIBRATION MENU ...
Страница 10: ...Page 10 TTFM 1 0 Transit Time Flow Meter ICONS ...
Страница 24: ...Page 24 TTFM 1 0 Transit Time Flow Meter SENSOR MOUNTING COUPLING RECOMMENDATIONS BAD GOOD ...
Страница 36: ...Page 36 TTFM 1 0 Transit Time Flow Meter SENSOR INTRINSIC SAFETY ...