The capacitive liquid level sensors, with no moving elements and electronic-based workflow, produce indication accuracy, which resulted in their wide application. The capacitive sensors do not run into the fuel line and do not affect the engine operation as compared with fuel flow meters, and enable accurate determination of time and volume of filling and draining, which flow meters do not provide.
The capacitive LLSs are featured by the ability to measure the level of any non-conducting liquids. For this reason, they can be used both in gas-powered and diesel-powered vehicles. The LLS installation requires drilling of a hole in the tank. The sensor length is supposed to be no less than the tank height in which it is installed. If the sensor length goes beyond the tank height, the sensor is cut to the required length.
The LLS can be connected to the terminal using an analog or frequency input, or RS-485/ RS-232 interface, depending on which one is available in the terminal.
Siensor product line is introduced by the liquid level sensors with both modifications:
serial digital interface (RS-232, RS-485);
The sensor housing, manufactured by Siensor, is made of the material resistant to organic solvents and loads in temperature range; the measuring component is made of corrosion-resistant aluminium alloy. The Siensor engineering expertise, use of advanced technologies and up-to-date materials in the manufacturing process allow us to create the equipment of outstanding quality and reliability.
Features and Benefits:
High reading accuracy
Level measuring error in the full range: max 1%
Sufficient protection against interference, power failure and connection errors.
Stable output signal
Smooth operation in wide temperature range (-60 to +80°С)
Power supply voltage: 7-50V
Increased maximum voltage
Compatibility with various vehicles and fixed installations
Compatibility with most liquid types: gas, summer and winter diesel fuel, oil products, maintaining their state of matter in the operating temperature range
Allow cutting of the measuring component without calibration
The delivery package is supplied with all the items required for installation and connection (connecting cable, carrier plate, rubber gasket, screws, seals).
Siensor AF107 Description
The Siensor AF107 liquid level sensor is an intelligent device designed for accurate measurement of fuel level in vehicle tanks and stationary reservoirs (diesel-generators, boiler plants, oil storages, etc.). Siensor AF107 measures fuel level, converts received value into an analog or frequency signal and then transmits data to the terminal, which indicates it in litres or percentage.
Siensor AF107 is a reliable sensor featuring a long-term service. The manufacturer’s limited warranty is valid for five years from date of purchase. Siensor AF107 provides flexible configuration of limit values and output signal properties. Output signal does not depend on power supply voltage and therefore the sensor can be integrated with any navigation terminal, which has a frequency or voltage measurement input.
Siensor AF107 is compatible with most liquid types. On request, it is possible to order the product with the length of a measuring probe different from the original one. Data processing algorithms enable high-accuracy detection of fuel filling, draining and consumption.
Features and Benefits
High-accuracy linear indication even in harsh service conditions (- 40 to +80°C)
Sufficient protection of analog and frequency outputs against short circuit, noise, power failure and connection errors
Corrugated metallic sheathed cable
Compatibility with most liquid types
Allows trimming of a measuring probe without calibration
Increased maximum voltage
The sensor design is resistant to fuel additives, waxes and pollution
Mountable to the tank of any capacity
Special oscillation filtering algorithm provides high-accuracy measurement of fuel level
Relative reduced measurement error: max ±1.0
Additional relative reduced measurement error caused by temperature change over the entire operating temperature range, %: max 1.2
Power supply voltage, V: 7-45
Power consumption, W:
typical – 0.6
maximum – 0.9
at analog output short circuit – max 1.6
Measurement interval, sec: 1
Galvanic isolation strength is no less than, V: 250
Operating temperature, °С: – 40 to +80
Extended operating temperature range*, °С: – 55 and +80
Dust and water protection: IP57
* the sensor can take measurements, but with reduced accuracy
Output voltage, V: 0…20
DA conversion width, bit: 12
Analog output load resistance, Ohm: max 2000
Output ripple, %: max 0.15
Output modulation: frequency-pulse
Output frequency range, Hz: 30…2000
Maximum frequency output load current in the “open collector” mode, mA: 300
Internal pull-up resistance to positive power supply voltage, Ohm: 1500