Waterproof Copper Tube Air Conditioner NTC Thermistor Sensor 10K
NTC temperature sensor is a kind of thermistor and probe. Its principle is: the resistance value drops rapidly as the temperature rises. It usually consists of 2 or 3 metal oxides, mixed in a fluid-like clay, and calcined in a high-temperature furnace to form a dense sintered ceramic. Actual size is very flexible, they can be as small as 0.010 inches or very small diameter. There is almost no limit to the maximum size, but usually under half an inch applies.
When using the ntc temperature sensor, under the condition of constant current, according to the size of the temperature zone, use two-point or three-point test to check the interchange accuracy, linearity and temperature coefficient. In general, the simplest inspection method is to inspect the reference voltage value. For all electrical parameters, there is a parameter table (certificate of conformity) accompanying the delivery to provide detailed parameter indicators for this batch of sensors.
Sensor Type | NTC: 5K, 10K, 20K, 50K, 100K, customized | |
Operating Temperature | -20~120°C, -30~250°C,-40~350°C, customized | |
Resistance Tolerance | 0.5%, 1%, 2%, 3%, 5% | |
Housing Size | customized | |
Housing Material | nickel-clad copper, brass, stainless steel, aluminum, customized | |
Wire | Teflon wire, PVC wire, Silicone wire, customized | |
Wire Length | customized | |
Special Requirement | Waterproof, anticorrosion, or others |
1).NO MOQ requirement
2).Payment Term:T/T or Western Union or Paypal
3).Delivery time: 5-7 working days,or subject to order quantity
4).Shipping: UPS, FEDEX, DHL door to door service by sea or air etc.
5).After-sales service gurantee
Reliability Test
Test Item | Test Standard | Test method | Performance requirements |
Zero Power Resistance | IEC 60539-1 | Immerse samples in the constant temperature bath at 25℃±0.005℃,test steady resistance | Resistance tol ±1% |
B value | IEC60539-1 | Immerse samples in the constant temperature bath at 25℃,50℃(or 85℃), test steady resistance,and calculate B value | Resistance tol ±1% |
Free fall | IEC60068-2-32 | Fall height: 1.5±0.1m,Surface: Cement , 1 time | No obvious damage, R25 △R/R≤±1% |
Insulation | IEC60539-1 | 500V pressure on insulation shell test insulation resistance | >500MOhm |
Withstand voltage | IEC60539-1 | Withstand voltage: 1500V/AC ,Leakage current:2mA Lasting: 60sec | No obvious damage |
Tension | IEC60068-2-21 | Pull uniform speed at the end, F>4.0KG(requested by customer) | No obvious damage, R25 △R/R≤±1% |
Vibration | Q/HBm 108-94 | Test frequency: 10~500Hz,swing: 1.2mm acceleration: 30m/s2 Direction X,Y,Z Time:8Hour/direction | No obvious damage, R25 △R/R≤±1% |
Steady humidity and heat | IEC60068-2-78 | Temp:40±2℃ Humidity:92-95%RH Time:1000±24Hour | No obvious damage, R25 △R/R≤±1% |
Thermal time constant | EC60539-1 | Immerse in 25℃ water,after thermal balance,immerse in 85℃,resistance arrives 63.2%,calculate total time | <10 sec |
High temperature storage | IEC60068-2-2 | Temp:125℃±5℃ Time: 1000±24Hour | No obvious damage, R25 △R/R≤±1% |
Cold and thermal shock | IEC60068-2-14 | -40℃~+125℃ T1:30min Cycle time:1000 | No obvious damage, R25 △R/R≤±1% |
Knock experiment | IEC60068-2-77 | Acceleration:250m/s2 Pulse lasting: 6ms Knock times: 1000 Recovery time: 2 Hour | No obvious damage, R25 △R/R≤±1% |
Low temperature storage | IEC60068-2-1 | Temp: 40±2℃ Time: 1000±24Hour | No obvious damage, R25 △R/R≤±1% |
Salt spray | IEC60068-2-11 | Temp: 35±2℃ Collection hour : 1.0mL~2.0mL Time: determine per as actual demand | No obvious damage, R25 △R/R≤±1% |