MeiTrack ASUF101 Manuale utente

ASUF101 & ASUF102 Bluetooth Ultrasonic Fuel Level Sensor User Guide

ASUF101 & ASUF102 Bluetooth Ultrasonic

Fuel Level Sensor User Guide

ASUF101 & ASUF102 Bluetooth Ultrasonic Fuel Level Sensor User Guide

Change History

File Name ASUF101 & ASUF102 Bluetooth Ultrasonic Fuel Level Sensor User Guide

Project Vehicle trackers and MDVRs Creation Date

Update Date

2021-11-15

Subproject Accessory User Guide Total Pages 14

Version V1.1 Confidential External Documentation

ASUF101 & ASUF102 Bluetooth Ultrasonic Fuel Level Sensor User Guide

Contents

1 Copyright and Disclaimer........................................................................................................................................... - 4 -

2 Product Introduction ................................................................................................................................................. - 4 -

2.1 Product Functions......................................................................................................................................... - 4 -

2.2 Product Specifications .................................................................................................................................. - 4 -

2.3 Cable Definition ............................................................................................................................................ - 5 -

2.4 LED Indicator................................................................................................................................................. - 5 -

3 Product Materials ...................................................................................................................................................... - 5 -

4 Installation................................................................................................................................................................. - 6 -

4.1 Installing the Sensor ..................................................................................................................................... - 7 -

4.1.1 Downloading the FuelGuard App......................................................................................................... - 7 -

4.1.2 Checking the Fuel Level of the Fuel Tank ............................................................................................. - 7 -

4.1.3 Confirming the Installation Location of the Probe ............................................................................... - 7 -

4.1.4 Fastening the Sensor............................................................................................................................ - 9 -

4.2 Device Connection...................................................................................................................................... - 10 -

4.2.1 Connecting a Sensor to a Device........................................................................................................ - 10 -

4.2.2 Configuring the Sensor ...................................................................................................................... - 12 -

5 Using the MS03 Tracking Platform........................................................................................................................... - 13 -

5.1 Querying Reports........................................................................................................................................ - 13 -

5.1.1 Querying Historical Data .................................................................................................................... - 13 -

5.1.2 Querying Sensor Reports ................................................................................................................... - 13 -

ASUF101 & ASUF102 Bluetooth Ultrasonic Fuel Level Sensor User Guide

1Copyright and Disclaimer

, and are trademarks that belong to Meitrack Group and its subsidiary.

The user manual may be changed without notice.

Without prior written consent of Meitrack Group, this user manual, or any part thereof, may not be reproduced for any

purpose whatsoever, or transmitted in any form, either electronically or mechanically, including photocopying and

recording.

Meitrack Group shall not be liable for direct, indirect, special, incidental, or consequential damages (including but not

limited to economic losses, personal injuries, and loss of assets and property) caused by the use, inability, or illegality

to use the product or documentation.

2Product Introduction

The new generation of the Bluetooth all-in-one ultrasonic fuel level sensor uses the ultrasonic reflection feature to

detect the fuel level without drilling holes. With a plastic outer case, the device is resistant to strong acids, corrosion,

shock, and high temperatures (300°C to 400°C). It is equipped with an internal low-power Bluetooth module, a RS232

serial port, and an analog port to output the fuel level.

2.1 Product Functions

Measure the fuel level of a vehicle.

Detect a high fuel level alert.

Detect a low fuel level alert.

Detect a fuel filling alert and a fuel theft alert.

2.2 Product Specifications

Item Specifications

Operating voltage 9–36 V DC

Power consumption 80 mA/12 V DC

Dimension 39 mm x 19.5 mm (Diameter x Height)

Operating temperature -40°C to 80°C

Storage temperature -40°C to 80°C

Operating humidity 0%–95%

Measuring range ASUF101: 3–100 cm

ASUF102: 3–250 cm

Maximum tank thickness 12 mm

Fuel tank supported Regular or irregular metal, steel, aluminum alloy, and plastic fuel tank

Measuring accuracy ±0.5%

Measuring resolution 0.1 mm

Water resistance rating IP68

Interface RS232 serial port and analog port (0–5 V)

Users can select one port to connect a tracker.

ASUF101 & ASUF102 Bluetooth Ultrasonic Fuel Level Sensor User Guide

Bluetooth Bluetooth 5.0. Users can log in to the FuelGuard app to configure fuel

tank parameters and check the status of the fuel level sensor.

2.3 Cable Definition

Cable Color Definition Description

Red Positive charge of the power

(9–36 V DC)

If it is connected to the vehicle battery, a fuse is required.

Black Power GND or RS232 GND It is connected to some servers.

Yellow RS232-Tx: signal output It is connected to RS232-Rx of a vehicle tracker or a MDVR.

White RS232-Rx: signal receiving It is connected to RS232-Tx of a vehicle tracker or a MDVR.

Green Analog output (0–5 V) It is connected to the fuel level sensor interface of a vehicle

tracker or a MDVR.

2.4 LED Indicator

LED Indicator Status

LED Indicator Color Description

Red (Blink) No fuel level signal is detected, or the signal strength is weak.

Green (Steady on) A fuel level signal is stable, and this place can be used to install the sensor.

Yellow (Steady on) The firmware is being upgraded.

3Product Materials

Standard Accessory Quantity Picture Description

Probe (integrated type) 1

Probe diameter: 39 mm

Probe height: 19.5 mm

Outer case material: engineering plastics

Connector: water-resistant 5-pin gold-plated

aviation plug

ASUF101 & ASUF102 Bluetooth Ultrasonic Fuel Level Sensor User Guide

9-meter extension cable 1

Extension cable

Sandpaper 2

Used to clean the bottom of the fuel tank.

304 stainless steel cable

tie 1

Used to fasten the probe.

Silicone grease 2

It is applied on the surface of the probe to exclude

air.

Rubber pad 4

Used to stick on to the probe.

8-pin to 4-pin cable 1

Connect device cables through the RS232 port.

Cable tie hoop 1

Adjust the stainless steel cable tie.

Thin cable tie 10

Used to fasten the extension cable.

Optional accessories:

Optional Accessory Quantity Picture Description

AB glue 1

Used to fix the probe on to the fuel tank. (Please

purchase it by yourself because we cannot deliver

it to you.)

4Installation

Users can perform the following operations to install the sensor:

1. Select a proper place to install the sensor.

ASUF101 & ASUF102 Bluetooth Ultrasonic Fuel Level Sensor User Guide

2. Install the sensor.

3. Connect the sensor to a vehicle tracker or a MDVR.

For details about how to install the sensor, see the following instructions.

4.1 Installing the Sensor

4.1.1 Downloading the FuelGuard App

On the FuelGuard app, users can check parameters of the sensor before it is installed, so as to select a proper place to

install the probe. The app supports the Android system only. Users can download the app by scanning the following QR

code:

4.1.2 Checking the Fuel Level of the Fuel Tank

Prior to the installation, keep the fuel tank at least half full and park the vehicle on level ground. Knock the fuel tank to

determine the fuel level.

When there is fuel in the fuel tank, you can hear a muffled sound. When there is no fuel in the fuel tank, it sounds clear.

At the meantime, you can open the fuel tank and check the fuel level. You can use any of the preceding ways to

determine whether the fuel tank is half full and estimate the fuel level.

4.1.3 Confirming the Installation Location of the Probe

When sticking the probe, keep it away from the fuel inlet and float. As shown in the following figure on the left, the

yellow area is suitable to install the probe. If the fuel tank is cylindrical, choose the area that is closest to the ground

ASUF101 & ASUF102 Bluetooth Ultrasonic Fuel Level Sensor User Guide

such as the section shown in the following figure on the right. Clean up the dirt and oil stain in the probe installation

area, and keep the area dry.

123

Connect the probe to the extension cable, arrange the extension cable in the cab, and connect the red wire of the

extension cable to vehicle battery's anode (9–36 V) and the black wire of the extension cable to its cathode (that is,

GND wire). After the power is supplied, the LED indicator becomes red, as shown in the following figure.

Clean up the silicone grease on the fuel tank and probe, and keep the probe installation location dry. If the bottom of

the fuel tank is covered with paint, use the putty knife or screwdriver to scrape paint. Then use the sandpaper to polish

the installation location until the tank metal is exposed. Apply the silicone grease to the probe surface and test the

installation location again. After that, keep the installation location clean and dry. As shown in the following figure, the

diameter of the polished area is 3.5 cm.

ASUF101 & ASUF102 Bluetooth Ultrasonic Fuel Level Sensor User Guide

After the power is supplied, the red LED indicator of the probe blinks. Enable the Bluetooth and app "UL212 Fuel" on

your phone, and search and connect related device. Place the probe on to the clean area and check the status in real

time on the app. If you want to select a proper installation location, meet the following conditions:

(1) The LED indicator of the device is green.

(2) On the app, the real-time fuel level and smooth fuel level are stable.

(3) On the app, the signal strength is greater than 30 or is stable. (Maximum value: 99)

(4) On the app, the number of available signals is stable. (Greater than 30. Maximum value: 40.)

(5) On the app, the inclination angle is less than 11 degrees. (Preferred value: 1–5 degrees)

4.1.4 Fastening the Sensor

(1) Clean and wipe the probe and installation location to keep them clean and dry.

(2) Appy a proper amount of AB glue to the probe, evenly stir it for 20–30 seconds, and stick the probe on the marked

location.

(3) Check whether the data on the app is stable. When the data is stable, use the 304 stainless steel cable tie to fasten

the probe.

ASUF101 & ASUF102 Bluetooth Ultrasonic Fuel Level Sensor User Guide

(4) When the cable tie is about to tighten, stick the rubber pad on to a corner of the fuel tank to prevent the fuel tank

from damaging. Then fasten the cable tie by using the cable tie hoop.

4.2 Device Connection

4.2.1 Connecting a Sensor to a Device

The ultrasonic fuel level sensor can read fuel parameters through the RS232 port or analog port. You can select one as

required.

1. Connect the sensor to a device through the RS232 port and then read the fuel level.

(1) If the RS232 port of the device is a jack, cut the 4-pin connector and remain the 8-pin connector before the

installation. You can connect the sensor to the device as follows:

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