General information and technical specifications of DUT-E / Technical specifications / Specifications of DUT-E AF output signal
DUT-E fuel level sensors. Operation manual. Version 8.1
© Technoton, 2020 18
1.4.2 Specifications of DUT-E AF output signal
DUT-E AF fuel level sensor has an analog and frequency output which can be configured via
K-Line (ISO 14230) interface.
Output signal value does not depend on supply voltage and is linear dependent on the fuel
level.
The capacity of analog-digital output signal converter is 12 bit.
DUT-E AF output signal ranges:
1) Voltage output — from 1.0 to 9.0 V. The lower limit of the range can be configured from
1.0 V to 8.0 V and the upper limit from 2.0 V to 9.0 V;
Note — variation of the output voltage of the sensor can be set in both direct and inverse
dependence.
2) Frequency output — from 500 to 1500 Hz. Frequency output signal has a meander shape
with 50 % duty ratio. High level voltage value equals to (10.0±1.0) V.
Low level voltage value is not more than 0.5 V.
Depending on settings DUT-E AF output signal value can stand for:
• fuel level in the tank (mm);
• fuel volume (l);
• total fuel volume (l) of up to eight tanks.
DUT-E AF output signal correspondent to fuel volume is generated according to calibration
Table of the fuel tank which is stored in the sensor’s memory.
Input resistance of the device DUT-E AF is connected to in frequency output mode should not
be less than 10 kOhm;
In voltage output mode output resistance value is not more than 5 kOhm for low level and not
more than 50 kOhm for high level.
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