Technoton DUT-E AF - DUT-E with Frequency Output

Diagnostics and troubleshooting / DUT-E with frequency output
DUT-E fuel level sensors. Operation manual. Version 8.1
© Technoton, 2020 94
6.2 DUT-E with frequency output
Normal operation of frequency DUT-E can be verified with frequency meter by measuring
output sensor frequency and comparing results of measurements with the data in table 21.
Table 21 — Frequency DUT-E malfunctions
Output frequency, Hz
Malfunction reason
Solution
from 500 to 1500
No malfunctions, normal
operation
Check tracking device
operation
1600
Short circuit of the
measuring probe tubes due
to metal shavings and burrs,
conductive mud or water at
the bottom of the fuel tank
Eliminate short circuit,
wash the tubes of the
probe, clean the fuel tank
400
Sensor is not calibrated
Calibrate the sensor
Sensor PCB failure
Contact the closest
service center
Diagnostics of DUT-E AF can be carried out with service adapter the same way as for other
DUT-E modifications having digital output (see 6.3).