Sensors VI: Automotive Sensor for EV/HEV Applications
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The element14 ESSENTIALS of Automotive Sensors for EV/HEV Applications covers sensor technology used in automotive applications, ranging from hybrid electric vehicles (HEVs) to fully electric vehicles (EVs). To extend the knowledge covered in the main module, this supplementary guide discusses the types of related components used for prototyping or product development.
Airflow Sensor
FMA-500-T1-40W-GV Air Flow Sensor, FMA Series, Filtration Air Restriction, Analog, 1/8-27 NPT, 40in H2O, Vacuum Gage
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The NovaSensor FMA Series of Filtration Air Restriction (FAR) Sensor accurately measures the pressure loss across a variety of air filtration devices, utilizing high accuracy NPA piezoresistive technology in a low-profile form factor that is easy to install and maintenance-free. Available in multiple positive or vacuum pressure ranges, mating with an integrated AMPSEAL 16 (3-way) electrical connector and 1/8-27 NPT female pressure connection port.
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Battery Coolant Temperature Sensor
The Coolant Temperature Sensor (CTS) monitors the temperature of the coolant that is being pumped around the battery to cool the battery module of EVs/PHEVs. If the battery module starts to overheat, the Coolant Temperature Sensor relays a signal to the Battery Management System (BMS). The BMS uses this information to prevent battery packs from any damage and maximize performance.
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Engine Temperature Sensor
GE-1711ATM Temperature Sensor, Engine, -40°C to 180°C, 10 kohm, 3977 K, Brass, Amphenol Sine ATM Connector
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The Thermometrics GE-1711 / GE-1797 Engine Temperature Sensor (ETS) monitors the temperature of the coolant, oil, or fuel being used in an engine. Their purpose is to provide a signal output that is proportional to engine temperature. This signal can be used as an input to a temperature gauge, provide input to an Engine Control Unit (ECU), or control a cooling fan circuit.
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Gas Detection Sensor
T3031-2-2K-24-P Gas Detection Sensor, Harsh Environment, Carbon Dioxide, 2000 ppm, 5 %
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The Telaire T3030 Series is a range of Carbon Dioxide (CO2) Sensor designed to meet the specific needs of customers who require measuring CO2 in harsh or difficult environments. Based on a series of modules, the casing offers a number of combinations to meet the needs of range, supply voltage, and output type in various applications. Example applications include buses, refrigerators, subway stations, and railway carriages, and more.
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Inductive Position Sensor
PSC360G2-F1A-C0000-ERA360-RE-K Magnetic Position Sensor, PSC-360 Series, Rotary, Flat Shaft, Simple Output, Analog, 360 °, 30 Vdc
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The PSC-360 is a high performance non-contacting rotary position sensor for automotive, off-road, marine, medical and industrial applications without the limitations of potentiometric solutions (e.g., wear, limited electrical angles). A configurable switch output, as an option, integrated within the sensor is available too. Redundancy can be achieved by employing a dual die version providing independent voltage outputs with fully customized characteristics providing the possibility to detect error outputs by the host electronics. Sealed for harsh environments and flange mounted for easy positioning when necessary, it provides high stability under harsh environment conditions such as vibration, shock, extreme temperatures, humidity, dither, moisture, or dirt. Available with fly leads, it can be customized to customer´s needs to any desired connector configuration.
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Motor Coil Temperature Sensor
The Thermometrics A-1737A-1737 Motor Coil Temperature Sensor is used on a starter generator to provide temperature measurement of the motor coil. Typically mounted on the neutral bar, it detects increases in current that would indicate a failure that could lead to a stall. The sensor can also be used to monitor the motor windings temperature and warn of an over-temperature conditions.
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Pressure Sensor
The NovaSensor NPI-19 Series of Medium Pressure Sensor consists of current-driven, media-isolated pressure Sensors, incorporating state-of-the-art IsoSensor technology. They are designed to operate in hostile environments while still providing the outstanding sensitivity, linearity, and hysteresis of a silicon sensor.
The piezoresistive sensor chip is housed in a fluid-filled cylindrical cavity and isolated from measured media by a stainless steel diaphragm and body. As with all NovaSensor silicon Sensor, the NPI Series employs SenStable
processing technology, providing excellent output stability.
The modular design allows for a variety of pressure port modules, which are hermetically welded to the sensor header module. To compensate for temperature effects, a complete resistor network is supplied on a hybrid ceramic substrate. The IsoSensor design minimizes temperature errors to provide a maximum offset error of 0.75% FSO over the 32°F to 158°F (0°C to 70°C) compensated range.
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Thermistor
The Thermometrics CL Series of Inrush Current Limiting Thermistors consists of a disc thermistor with uninsulated lead-wires, and are used to control inrush current when switching power supplies. The main purpose of limiting inrush current is to prevent components in series with the input to the DC/DC converter from being damaged. Typically, inrush protection prevents nuisance blowing of fuses or breakers as well as welding of switch contacts.
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