View source for TECHNOTONE DUT-E 485 FUEL SENSOR

== Introduction to the Product ==

'''DUT-E''' fuel level sensor is used for accurate fuel level and volume measurement in tanks of vehicles and stationary units. DUT-E helps determine current fuel volume and detect changes (such as refueling or draining) in the fuel tank.

It is widely used in GPS tracking and vehicle telematics systems, either as an additional fuel sensor or as a replacement for the factory-installed sensor. When integrated into a telematics system, DUT-E provides reliable and precise data on fuel levels, helping detect fuel misuse and theft, and offering a comprehensive view of fuel consumption.

== Product Specification ==

{| class="wikitable" style="width:70%;"
|-
! Parameter !! Value
|-
| Operating principle || Capacitive
|-
| Relative measuring error (to measuring length), % || ±1%
|-
| Power supply voltage range || 10 – 50 V
|-
| Consumption current at 12 V || ≤ 50 mA *
|-
| Consumption current at 24 V || ≤ 25 mA *
|-
| Availability time after power-up || ≤ 10 seconds
|-
| Temperature range || -40 to +85 °C
|-
| Ingress protection rating || IP55/57
|-
| Electromagnetic compatibility || 
* ESD Protection (Level II) – GOST 30378, GOST R 50607  
* EMI Protection (Level IV) – STB ISO 7637-2, GOST 28751
|}

== Wiring Information ==

{| class="wikitable" style="width:50%;"
|-
! Wire Color !! Function
|-
| Orange || Power
|-
| Brown || GND
|-
| Red || RS485A
|-
| White || RS485B
|}

== Device Configuration ==

# Connect the DUT-E sensor to the device via RS-485 ports.
# Open the configurator tool '''GUI_v2/v3'''.
# Click on '''Connect Sensor'''.
# 
# For **Automatic mode**, set the "Automatic Transmission mode" to hex format with a desired time interval.
# For **Request mode**, disable "Automatic Transmission mode".
# Click on '''Save to Sensor'''.
# Now use the '''QCOM Tool''' to verify that the fuel data is visible after proper configuration.

== Command Reference ==

==== For Active Mode ====

<pre>
SET CUENSDA:ON,CUSRLSRC:TECHNO485,CUSRLDATACFG:1-0-0-0-0-0-0-0-0
</pre>

==== For Request Mode ====

<pre>
SET CUENSDA:ON,CUSRLSRC:TECHNO485,CUSRLDATACFG:1-0-0-0-0-0-0-0-0
SET CUENFUELREQ:1,CUFUELNOS:1,CUFUELUR:10,CUFUELINT:5

// CUENFUELREQ:0 - Request mode disabled
// CUENFUELREQ:1 - Request mode enabled

SET CUFUELDATAREQ:1-0x31-0x01-0x06-0x6c

// First bit = Number of fuel sensors
// CRC for 1 sensor = 0x31-0x01-0x06-0x6c
</pre>

==== For Connecting Parallel Fuel Sensors (2 Sensors) ====

<pre>
SET CUENSDA:ON,CUSRLSRC:TECHNO485,CUSRLDATACFG:1-0-0-0-0-0-0-0

SET CUENFUELREQ:1,CUFUELNOS:2,CUFUELUR:10,CUFUELINT:5

// CUENFUELREQ:0 - Request mode disabled
// CUENFUELREQ:1 - Request mode enabled

SET CUFUELDATATEQ:2-0x31-0x02-0x06-0x39

// First bit = Number of fuel sensors
// CRC for 2 sensors = 0x31-0x02-0x06-0x39
</pre>