The number of sensors in modern vehicles and mobile machines is continually increasing. Sensors supply the measuring values for the electronic control units and are therefore an essential component for the safe, comfortable and economic operation of cars, trucks, commercial and special vehicles. The extreme conditions in automobile applications such as heat, cold or continuous vibrations place high demands on the reliability and resilience of sensors. At the same time, the sensors need to be small, energy saving and cost effective.
First Sensor develops and manufactures innovative and reliable OEM pressure sensors for integration in motor vehicles and mobile machines, which can be adapted to your individual customer requirements with a high level of application expertise. By manufacturing all central components ourselves, we ensure the long availability of all products for series production and the aftermarket. Our sensors are available in various pressure ranges from vacuum to high pressure and with customized and electrical or pressure connections. We also offer a wide range of analog and digital interfaces, for example ratiometric signals, SENT, LIN, PWM and I²C. All custom OEM pressure sensors are developed and manufactured in accordance with the quality management system for the automobile industry ISO/TS 16949.
Our OEM pressure sensors for fuel applications are used for tank pressure measurement, tank leakage diagnostics and fuel delivery and optionally come with an integrated temperature sensor. The sensors are installed on the tank wall or directly in the tank, where they are completely enclosed by fuel or fuel vapors. Our tank pressure sensors are suitable for the relative and absolute pressure measurement of aggressive fluids such as gasoline, diesel, methanol and ethanol. For measurement in the tank, we offer patented technologies and processes that enable space-saving, maintenance-friendly and cost-effective sensor solutions. The sensor can also be mounted on components of the fuel supply system such as a tank flange or a fuel line or can be directly integrated into the fuel delivery module. Our highly accurate low-pressure sensors are used for leakage measurement, as they are able to detect minimal pressure changes in the fuel tank. To regulate the tank air intake and extraction, pressure sensors from First Sensor monitor negative pressures and overpressures in the fuel tank.
In brake booster systems, our vacuum pressure sensors measure the negative pressure for controlling the vacuum pump and thus ensure optimal support for the braking action. The robust sensors are designed for temperatures from -40 °C to +135 °C and dirty or polluted air. Further, the vacuum sensors support automatic start-stop systems in cars and thus help to reduce carbon dioxide emission.
For electrohydraulic power-assisted steering, we offer high-pressure sensors with multiple integrated pressure connections for measuring different pressures and temperatures. Our modular high-pressure sensors can also be customized for many other hydraulic pressure applications in vehicles and machines.
To set the damping of the engine suspension, for example in sports cars, pressure sensors with very rapid response times are required so as to be able to respond to the manner of driving and lane structure in real time. First Sensor offers pressure sensor solutions with very fast signal processing by using application-specific integrated circuits (ASSP/ASIC).
In the air-conditioning systems of motor vehicles, our sensors measure pressure and optionally also temperature in closed-loop refrigerant circuits. The sensors are suitable for the standard refrigerant R134a as well as alternative climate-friendly solutions such as R1234yf and R744 (carbon dioxide). The sensors are protected against water and dust in accordance with IP6K9K and are designed for a media temperature range from -40 °C to +165 °C.
For the highly sensitive measurement of ultra-low differential pressures in vehicles and machines, we provide innovative flow-based pressure sensors with measuring ranges from 25 Pa (0.25 mbar) as well as highest resolution and offset stability.Further application areas of our OEM pressure sensor solutions are exhaust gas aftertreatment (SCR) systems, common rail injection up to 3000 bar, high and low pressure applications for hydrogen fuel cell vehicles and exhaust gas recirculation systems (EGR).