TKLS • SMART FUEL LEVEL SENSOR
OVERVIEW
The TKLS fuel level sensor is designed to measure fuel level in a vehicle fuel tank and transfer this information to external devices via one of the supported interfaces.
The TKLS can be used as a replacement of the factory-fitted standard fuel level sensor or as an additional sensor for fuel level monitoring.
The TKLS supports data transmission via RS-485 bus, in LLS and Modbus protocols, and via frequency output as pulses proportional to measured fuel level, PWM signal or periodic sequence.
In addition to fuel level, the sensor measures ambient temperature and sends the readings to an external device.
Any device equipped with RS-485 which supports data exchange in LLS or Modbus protocols can operate as an external device (for example, a level indicator or an onboard vehicle tracking device).
The TKLS sensor is equipped with Bluetooth module, which provides the sensor remote configuration via Bluetooth using any mobile device. By means of configuration utility, developed by TechnoKom specialists, a new configuration can be sent to the sensor remotely without sensor uninstallation.
The TKLS is equipped with 3-axis digital accelerometer and inclinometer with wide range of full scales from ±2g to ±16g intended to detect motion, determine the sensor’s orientation, measure vibration level, determine inclination angle, etc. Data from the accelerometer is used in fuel level calculation and provides more accurate level data due to accounting such specific details as fuel movement in the tank during vehicle motion, vehicle inclination and etc.
SPECIFICATIONS
| BASIC CHARACTERISTICS | |
| Interfaces | • 1 x RS-485 (TIA / EIA-485-A) • 1 x Frequency output • 1 x Digital input |
| Communication protocols (RS-485) | • AGHIP (AutoGRAPH Hardware Interface Protocol), • LLS, Modbus |
| Bluetooth (BLE) | • Yes |
| Sensors | • Internal 3-axis accelerometer / inclinometer |
| Features & services | • Self-diagnostics, Error reports, Logging • Remote configuration: BLE, RS-485 • Remote firmware update |
| FREQUENCY OUTPUT | |
| Output type | • Open collector |
| Output frequency range | • 100…3000 Hz |
| Maximum load current | • 200 mA |
| MEASURING CHARACTERISTICS | |
| Operational liquids | • Gasoline, fuel oil |
| Fuel level measuring | • Accuracy: ± 1 % • Resolution: 12 bit |
| Temperature measuring | • Measuring range: -40…+85 °С • Accuracy: ± 1 °С |
| OPERATIONAL CONDITIONS | |
| Electrical | • Operating voltage: 7...60 V • Power consumption (at 12 VDC, 22 °С): 30 mA |
| Environmental | • Operating temperature: -40...+85 °С • Protection class: IP69K |
| OTHERS | |
| Dimensions | • Probe length: 750 / 1000 / 1500 / 2000 mm |
| Mounting type | • SAE 5-bolt pattern |
| Average life time | • 10 years |
STRUCTURE
BLUETOOTH MODULE
The TKLS sensor is equipped with Bluetooth module, which provides the sensor remote configuration via Bluetooth using any mobile device. By means of configuration utility, developed by TechnoKom specialists, a new configuration can be sent to the sensor remotely without sensor uninstallation.
CPU (CENTRAL PROCCESSING UNIT)
The central processing unit is the core of the TKLS sensor, which unites all of the system components together and ensures their interaction in accordance with the program stored in the sensor. The processing unit is a high-speed single-chip microcomputer able to perform computations of at a speed and accuracy level that is sufficient to meet various navigation and service challenges. The custom firmware, developed by TechnoKom specialists, enables the CPU to receive data from the different modules of the system, to perform logical and mathematical processing of the data and to control the modules as appropriate. It should be noted that the functional capability of the sensor firmware is being constantly enhanced and extended so as to provide users with new and improved features and options.
ACCELEROMETER
The TKLS is equipped with 3-axis digital accelerometer and inclinometer with wide range of full scales from ±2g to ±16g intended to detect motion, determine the sensor’s orientation, measure vibration level, determine inclination angle, etc. Data from the accelerometer is used in fuel level calculation and provides more accurate level data due to accounting such specific details as fuel movement in the tank during vehicle motion, vehicle inclination and etc.
FREQUENCY OUTPUT
The TKLS is equipped with frequency output which allows to receive level data in frequency form. Any indicating or data collecting device equipped with the frequency output can receive data from the TKLS.
Depending on the frequency output configuration the level data can be sent as frequency signal, PWM signal or periodic pulse sequence.
RS-485 (LLS / MODBUS)
The TKLS is equipped with the RS-485 (TIA / EIA-485-A) interface. Due to it, the TKLS sensor can be connected to any device equipped with RS-485 and supporting TKLS data transmission protocol. The TKLS sensors support LLS, Modbus and AutoGRAPH Hardware Interface (AGHIP) protocols. The AGHIP protocol is intended for data transmission to AutoGRAPH devices.
DIGITAL INPUT
The TKLS is equipped with one active high digital input which can be used in automatic calibration.