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20 Doc. No. 06EN003367 Rev. E
ST50 Mass Flow Meter
Step 3
Verify sensor element continuity and resistance.
Remove sensor element cable from the bottom of the control circuit assembly. Note that two of the wires have a red stripe and are
located closest to the interconnecting cable header. Using an ohmmeter verify that resistance between the two red striped wires is
approximately 1100 ohms +/- 20. This resistance is temperature dependant. The resistance at 70 degrees F should be 1082 ohms.
Verify the resistance between the two natural colored wires are approximately the same.
Sensor Element Cable
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