Technoton DUT-E AF - Settings - Thermal Compensation

Configuration of sensor using service adapter / Vertical menu description / Settings - Thermal compensation
DUT-E fuel level sensors. Operation manual. Version 8.1
© Technoton, 2020 74
3.10.5 Settings – Thermal compensation
Temperature extension/shrinking of fuel cause by change of its temperature, leads to change
of fuel volume in fuel tank. As result – sensors transmit to tracking/monitoring unit information
on rising/lowering fuel level.
DUT-E makes recalculation of fuel level – automatic temperature correction, which recoups
temperature extension/shrinking of fuel.
By default, temperature correction function is turned off. To turn it on, tick the box
Thermocorrection. In the field, which will appear next to the box, pleas enter thermal
compensation coefficient (see figure 50).
Thermal compensation coefficient
K
.ther.corr
is determined by formula (1):
minminmax
minmax
ther.corr.
V)TT(
100)VV(
)1(
K
−
−
−=
(1)
where T
min
and T
max
— respectively the minimum and the maximum measured values
of fuel temperature in the tank during 24 hours;
V
min
and V
max
— measured values of fuel volume in the tank with minimum and maximum
fuel temperature respectively.
IMPORTANT:
1) It is recommended to determine Values V
min
, V
max
, T
min
, T
max
by data on Server.
2) When measuring values V
min
, V
max
, T
min
, T
max
during 24 hours follow the
requirements:
- Vehicle is not moving with engine off .
- Ambient temperature should correspond to normal operating conditions of the Vehicle.
- Tank should be filled with fuel not less than 10 % of the total fuel volume.
- There should be the same fuel volume in the tank (refueling or draining is
not allowed)
a) disabling the feature b) inserting coefficient
Figure 50 — Thermal compensation setting