NTC Thermistor Temp Sensor

Brief Instruction：

The NTC Thermistor Temp Sensor consists of insulated wire (PVC wire, cross-linked polyethylene insulation wire), NTC chip, epoxy resin, and aluminum shell. Optional resistance ranges from 0.3 kω to 2000 kω, and beta ranges from 2500K to 4500K.

Features：

Comply for ROHS standard

PVC insulated lead wires temperature sensor, measuring temperature range: -20℃~105℃ (-22°F to +221°F)

Waterproof aluminum/copper housing

Widely Application：

Household appliances: air conditioner, refrigerator, freezer, water heater, air heater, dishwasher, etc.

Auto: Auto air conditioning, water temperature sensor, intake temperature sensor, engine.

Temperature control system: greenhouse, constant greenhouse, etc.

Structure and Dimensions：

Electrical specification：

The great advantage of NTC Thermistor Temp Sensor is their high sensitivity. They are mainly used for room temperature measurements up to moderate high temperatures. They are popular in research and medical applications, such as electronic medical thermometers. A thermistor is a type of thermistor whose resistance varies with temperature. Resistance is measured by passing a small measured direct current (dc) through it and measuring the resulting voltage drop. The another advantage of thermistors is that point measurements can be made compared to other temperature sensors, their high sensitivity allows thermistors to operate over a smaller temperature range and to be very accurate (usually better than 0.05°C and 0.1°C). Thermistors can be an order of magnitude more sensitive than resistance thermometers (RTDS). There are two basic types of thermistors, PTC and NTC:

PTC (positive temperature coefficient) devices show an increase in resistance when the temperature increases. PTC thermistors are temperature-dependent resistors made of barium titanate and should be selected when significant resistence changes are required at specific temperature or current levels.

The NTC (negative temperature coefficient) device shows a decrease in resistance as the temperature increases. Compared with PTC thermistors, NTC thermistors have simpler structure, easier to use, and lower safety risks. It's made up of semiconductors. They are made from an oxide mixture of manganese, cobalt, copper or nickel. They operate at temperatures ranging from -150°C to 600°C. For temperatures of about 700 ° C, devices utilizing zirconia doped with rare earth oxides can be used. NTC should be used when continuous resistance changes are required over a wide temperature range. They have mechanical, thermal and electrical stability as well as high sensitivity.

Thermistors are commercially available in various shapes: beads, discs, chips, and probes. The most common form is a bead with two wires attached.

Product picture：

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