VorTek Pro-T, Инструкция по эксплуатации

Страница: 122 / 150

Chapter 5 Troubleshooting & Repair Series M22/M23/M24 Instruction Manual
5-12 M-000-00010
f. Hold a finger on the three exposed pins on the analog board.
The meter should read electrical noise, 60 Hz for example. If
all readings are correct, re-install vortex sensor wires.
4. Verify all meter configuration and troubleshooting steps
previously described. There are many possible causes of this
problem, consult factory if necessary.
Symptom: Meter Displays Temperature Fault
1. For remote mounted electronics, carefully check all the wiring
connections in the remote mount junction box. There are 15
connections that must be correct, verify each color (black and
red), shield, and wire number.
2.
Go to the first level of the hidden diagnostics and check the
resistance of the rtd1. It should be about 1080 ohms at room
temperature.
3. Using ESD precautions and hazardous area precautions,
remove the electronics enclosure window cover. Disconnect
the temperature sensor from the electronics stack or the remote
feed through board. Refer to Figures 5-1 ,5-2 and 5-4.
Measure the resistance across the outside pins of the
temperature sensor connector. It should read approximately
1080 ohms at room temperature (higher resistance at higher
temperatures). Measure the resistance across the inside pins,
they should read the same.
4. Measure the resistance from one of the outside pins to case
ground then from one of the inside pins to case ground. They
should read open.
Figure 5-4.Temperature Sensor Connector
5. Consult the factory with the findings
OUTSIDE
OUTSIDE
INSIDE