NTC Sensor for Thermostat Temperature Controller air Conditioner, Refrigerator

Custom 5K 10K 15K 20K 25k 50K 100K NTC thermistor sensors ( rubber head copper head sensor probe Kit ) are used to measure the temperature of the HVAC, Freezer, evaporator and of the conditioned interior. An air-conditioning installation can also serve for heating in winter.
1. The resistance of different types of NTC temperature sensor is different, but how to judge the quality of the temperature sensor? Very simple, it is to measure its voltage online, the normal voltage at 25 degrees is generally between + 2 ~ + 2.5V .

2. Because the human body temperature is constant, the on-circuit voltage is not constant (approximately 2.17V) when holding the temperature-sensing head for a while.

3. Unplug the NTC temperature-sensing head, and measure the resistance of the two pins of the socket on the line. The resistance value is basically the model value of the temperature-sensing head at 25 ℃ (this method is inaccurate after actual inspection). If the resistance is about 8K, the model value of the NTC sensor temperature head is generally 10K; if it is a 4.7K resistance, it is a 5K temperature head; and so on. However, for some large air conditioners, the resistance value of the NTC temperature sensor of the control board of the inverter air conditioner external unit is 3 times the lower bias resistance, that is, the resistance value measured by the above method multiplied by 3 is the resistance value of the NTC sensor at 25 ° C.

4. The model value of the NTC temperature sensor is its resistance value at 25 ℃, usually 5K, 10K, 15K, 20K, 25k, 50K, 100K which are generally negative temperature coefficient, that is, the higher the temperature, the more the resistance value small.

5. Generally speaking, the temperature of the internal machine tube and the room temperature resistance are the same.

rubber head copper head NTC sensor probe Kit

Custom 5K 10K 15K 20K 25k 50K 100K NTC thermistor sensors

NTC Sensor for Thermostat Temperature Controller air Conditioner

Description

TYPE:	NTC thermistor sensors probe	B25/50:	3950K, 3977K, 3435K
Sensor Head:	O Ring, Fork Metal, Injected Tube, NPT, M16, tainless Steel Tube	Wire:	CL2 PT4,#24 2466,#28 1332
Usage:	Temperature Sensor, Instant Water Heaters, water heater, air conditioner, refrigerator, water fountain, induction cooker, coffee maker	Pn (rated Power):	50mw
High Light:	EPCOS / AVX / SEMITEC /SUBARA / MITSUBISHI / OHIZUMI NTC thermistor Sensor, 3977K NTC Temperature Sensor, Thermistor Water Temperature Probe

Custom NTC thermistor sensors probe Wire 3M~10M Theory Signal Output Origin.

Specification Name	Scope	Detection Condition
R25(nominal resistance value)	1k, 2k, 2.7k, 3k, 5k, 10k, 15k, 20k, 30k, 40k, 47k, 50k, 100k, 200k (EPCOS / AVX / SEMITEC /SUBARA / MITSUBISHI / OHIZUMI NTC thermistor)	Constant temperature 25℃±0.05℃
R25 Permissible variance(%)	±1,±2, ±3, ±5, ±10	Constant temperature 25℃±0.05℃
B25/50 or B25/85(material coefficient)(thermal-sensitivity index)	2500~5000K	Constant temperature 25℃±0.05℃ Constant temperature 85℃±0.05℃
B25/50 Value permissible variance(%)	±1,±2	Constant temperature 25℃±0.05℃ Constant temperature 50℃±0.05℃
∫(dissipation coefficient)	≥0.8mw/℃	Static in the air
T(thermal time constant)	≤25S	Static in the air
Ta(Working temperature)	-30℃~+120℃
Pn (rated power)	50mw	within working temperature
Case and head		Fork head, O ring head,drops of water head, Metal case, Thread copper case, injection head, tainless Steel Tube, or according to client’s drawing
Lead wire		#24 30# 2651, UL4411 28#, double wired conductor and so on, or according to client’s request.
Terminal		Can be riveted according to the requirements of various terminals

The sensor’s connection terminal and housing size and lead length can be customized according to customer requirements

Services
1. Your inquiry will be replied within 24 hours;
2. Well-trained and experienced staff are always at your service.
3. Unique design products and many private mold product are waiting for your choice.
4. Strictly protect your private information and your ideas of design.
FAQ

Q1. Can I have a sample order for NTC, PT100,PT1000, RTDs, and Ds18b20 SENSOR?
A: Yes, we welcome sample order to test and check quality. Mixed samples are acceptable.