A probe sized for your tank
Cut the measuring probe to the required working length using the model’s installation guide.
RS232 DIGITAL FUEL LEVEL SENSOR
AG-RS232
Add a dedicated digital fuel level connection to a tracker equipped with an RS232 port.
OutputRS232 digital
Power12–30 V DC
Measurement error±1%
ProtectionIP67
For non-conductive fuels. Confirm fuel, tank and device compatibility before ordering.
PRODUCT OVERVIEW
Designed around your installation.
Calibrate for the installation
Test the sensor, calibrate readings and add calibration tables with AoooG Portable Configurator Client 5.7 on your Windows PC.
Connect to your equipment
Match the selected output to the tracker or controller, then verify readings through your system.
TECHNICAL DATA
Know the details.
Values follow the technical table in the 2025 wired sensor user guide. Confirm the applicable hardware revision when ordering.
Open source datasheet ↗| Output | RS232 digital |
|---|---|
| Power | 12–30 V DC |
| Measurement error | ±1% |
| Protection | IP67 |
| Maximum current | 20 mA |
| Resolution | Less than 1 mm |
| Probe length | 700 / 1000 mm; additional lengths up to 3000 mm |
| Operating temperature | −40 to +85 °C |
| Output interval | 1 second |
| Configuration | AoooG Portable Configurator Client 5.7 (Windows PC) |
| Baud rates | 2400, 4800, 9600, 19200, 38400, 57600, 115200 bit/s |
| Default baud rate | 9600 bit/s |
INSTALLATION & SETUP
Prepare. Calibrate. Verify.
Use the full manual for installation. The steps below explain the workflow; dimensions and mounting allowances depend on the model and accessories.
- 01
Plan the mounting position
Measure the tank and choose a position close to its geometric centre, with room for the probe and mounting hardware.
- 02
Prepare the probe
Use the specified working length and model-specific clearance. Keep metal shavings out of the measuring tube and fit the supplied filter and accessories.
- 03
Set the reference points
Connect the sensor to a Windows PC using the matching configuration adapter. Use AoooG Portable Configurator Client 5.7 to test readings, set empty and full reference points with the intended fuel, and add a calibration table for the tank. Verify the settings before connecting to the monitoring equipment.
- 04
Mount and check the readings
Fit the gasket, seal and secure the sensor as instructed. Check the signal and tank calibration in the connected system.
Wiring reference
| Wire colour | Function |
|---|---|
| Red | Positive supply: 12–30 V DC |
| Black | GND / negative supply |
| White | TXD |
| Yellow | RXD |
Use the fuse protection specified in the manual. Check the wiring against the supplied sensor revision before applying power.
Configuration and calibration
Choose your configurator, then the right tool. Empty/full calibration and tank-volume calibration are different steps.
USB configurator · standalone
For AG-AF, AG-RS485 and AG-RS232. With power connected, use the EMPTY / FULL buttons to calibrate empty and full reference points. No computer software is required.
USB configurator + Windows PC
Connect the USB configurator to your computer and use AoooG Portable Configurator Client 5.7 to test the sensor, set parameters, and read or write tank calibration tables.
AG-AF · AG-RS485 · AG-RS232
Packaging & shipping
Inner box
2 sensors
79 × 18 × 13 cm
Dimensions (L × W × H)
Outer carton
5 inner boxes · 10 sensors
80.5 × 38.5 × 31.5 cm
Dimensions (L × W × H)
Inner-box reference dimensions are rounded up from 78.5 × 17.5 × 12.5 cm. Outer-carton dimensions are shown as supplied.
PRODUCT RESOURCES
Everything for the next step.
Review the specifications, prepare the installation and connect the sensor to your application.
COMMON QUESTIONS
Before you get started.
Can this sensor measure water?
No. These capacitive fuel sensors are intended for non-conductive liquids. Water and other conductive liquids are not suitable.
Do fuel level readings equal litres?
Level and volume are different measurements. The monitoring system needs the correct data format and tank calibration to convert readings into volume for your tank.
Can I shorten the probe?
Yes. Follow the wired user guide for the cutting allowance and mounting arrangement, keep the probe free of debris and complete empty/full calibration after preparation.
Will it work with my tracker?
Your device needs a rs232 interface and support for the sensor output or protocol. Send us the tracker model to confirm compatibility before ordering.
LET’S FIND THE RIGHT FIT
Start with your tank.
We’ll help with the sensor.
Tell us the fuel type, tank depth and tracker interface.