Motorsport Temperature Sensor

The Aim Under Spark Plug Sensor is a thermocouple sensor that measures the cylinder head temperature from 0º to 300ºC, and is suitable for data loggers using a TC yellow patch lead. The cylinder head is a direct indicator of the overall engine combustion temperature, and the sensor is designed to be placed between the spark plug and the engine’s cylinder head.

Why Choose the Cylinder Head Thermocouple Sensor

The Aim Cylinder Head Thermocouple Temperature Sensor is used primarily for engine tuning and speed, as well as engine protection and overall safety. It is a vital tool for ensuring both maximum engine efficiency, but also the overall protection of the engine and driver.

The most crucial reason would be to reduce the risk of overheating the engine, and the Under Spark Plug Temperature Sensor sends the accurate, real-time temperature reading to your data logger. If the temperature climbs over the safe limit, the data logging display will immediately flash a warning letting the driver know to back off the throttle or pit immediately.

Please Note: While running the thermocouple along with the chassis, keep it as far as possible from other cables like RPM or Lap Receiver to minimise cable interference.

How the Cylinder Head Temperature Sensor Works

Motorsport engines are usually tuned to run on the edge of the safe temperature limit to produce maximum power. This means that to achieve the optimal temperature, engineers and tuners will use the CHT reading to make sure conditions such as air temperature and humidity are optimal. Running too cold loses horsepower; running too hot risks damage.

Please Note: To keep the sensor in contact with the cylinder head, you will need to remove the washer from the plug when installing the thermocouple.

Technical Information

Technical Specs

  • Temperature Working Range: 0-300°C
  • Cable Sensor Length: 40cm
  • Cable Type: Compensated
  • Connection: 2-pin male thermocouple
  • K Type Thermocouple
  • Diameter: 14mm

SKU: 14mm S-T-CHT

Part Number: X05SOT14A4516MS

Diagram

Included in the Box

Downloads

Aim Shop Tech Sheet Download Icon
Fiche technique du thermocouple de culasse
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