China KSD Bimetal Thermostat manufacturer
Dongguan Linkun Electronic Technology Co., Ltd.
Dongguan Linkun Electronic Technology Co., Ltd.
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Double Layer NTC Temperature Sensor Moistureproof Multi Scene

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Dongguan Linkun Electronic Technology Co., Ltd.

City: dongguan

Province/State:guangdong

Country/Region:china

Tel:86-0769-82210971

Contact Person:
Ms.Huang View Contact Details

Double Layer NTC Temperature Sensor Moistureproof Multi Scene

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Brand Name linkun
Model Number NTC Temperature Sensor
Certification CE / ROHS / UL / TUV / SGS
Place of Origin Dongguan China
Minimum Order Quantity Negotiation
Price Negotiation
Payment Terms T/T, L/C, Western Union
Supply Ability 24 million per year
Delivery Time Negotiation
Packaging Details Export Package / Negotiation
Features Using Double-Layer Encapsulation Process
Application Various home appliances
Type Thermistor
Working temperature range(°C) -10 to +105c
Resistance Value 5K,10K,20K,50K,100K
Dissipation factor(mw/°C) 1-2 (in still air)
Detailed Product Description

High Precision And High Stability NTC Temperature Sensor Using Double-Layer Encapsulation Process
 

NTC temperature sensors are usually composed of 2 or 3 metal oxides, mixed in a fluid-like clay, and calcined into a dense sintered ceramic in a high-temperature furnace. Oxygen-bonded metals tend to donate free electrons. Ceramics are generally excellent insulators. But only theoretically, this is the case for thermistor-type ceramics when the temperature approaches absolute zero. However, as the temperature increases to more common ranges, thermal excitations eject more and more free electrons. As more electrons carry current through the ceramic, the effective resistance decreases. Resistance changes very sensitively with temperature. A typical change is a decrease of (-)7[%] to 3[%] per degree Celsius. This is the most sensitive of any sensor suitable for use over a wide temperature range.
 

The main technical parameters:
 

1. The rated zero-power resistance value R25 refers to the zero-power resistance value of the thermistor measured at 25°C.

2. B value; defined as the ratio of the difference of the natural logarithm of the zero-power resistance value at two temperatures to the difference between the two temperatures.

3. Thermal time constant; under zero power conditions, when the temperature changes suddenly, the time required for the temperature of the thermistor body to change by 63.2% of the temperature difference between the beginning and the end.

4. Dissipation coefficient; at a specified ambient temperature, the ratio of the change in power dissipation of the thermistor to its corresponding temperature change.

 

Type
NTC(thermistor) Temperature Sensor
Temperature range
-50℃ ~ +300℃；Customized
Accurancy
1%；5%；10%
RT(25℃)
1K；2K；2.2k；2.7k；3K；5K；7K；8K；12K；15K；20K；25K；30K；40K；47K；50K；60K；70K；100K；200K；230K；250K；470K；500K；1000K；Customized
B value
3274；3435；3470；3928；3950；3977；4100；4200；4400；Customized
Probe Material
Stainless steel SS304； aluminum；copper；plastic；epoxy；glass
Installation
Flanged；Surface；Threaded；Plastic；Straight；Film；Customized
Wire Material
Heat shrinkable tube；PVC tube；glass fiber tube； tube
Connector
Molex；JST；DuPont；CWB；CJT；U type；Customized
Waterproof
IP67；IP68

 

Application
 

● Air conditioners, refrigerators, freezers, water heaters, water dispensers, heaters, dishwashers, disinfection cabinets, washing machines, dryers and other home appliances.
● Automobile air conditioner, water temperature sensor, intake air temperature sensor, engine
● Switching power supply, UPS uninterruptible power supply, frequency converter, electric boiler, etc.
● Intelligent toilet, electric blanket, etc.
 


Working principle of temperature sensor

Using the NTC thermistor under a certain measurement power, the resistance value drops rapidly as the temperature rises. Utilizing this feature, the NTC thermistor can be used to determine the corresponding temperature by measuring its resistance value, so as to achieve the purpose of detecting and controlling the temperature.








 


Conventional product electrical performance parameters
 

Part No.
R25℃
(KΩ)
B(K)
25/50℃
Rated Power @25℃(mW)
Dissipation Factor(δ)
(mW/℃)
Thermal time
Constant (S)
TS502□3274A
5.0
3274
10-20
2-4
5-20
TS502□3435B
5.0
3435
10-20
2-4
5-20
TS502□3470A
5.0
3470
10-20
2-4
5-20
TS502□3950A
5.0
3950
10-20
2-4
5-20
TS103□3274A
10.0
3274
10-20
2-4
5-20
TS103□3435B
10.0
3435
10-20
2-4
5-20
TS103□3470A
10.0
3470
10-20
2-4
5-20
TS103□3950A
10.0
3950
10-20
2-4
5-20
TS103□4100A
10.0
4100
10-20
2-4
5-20
TS153□3950A
15.0
3950
10-20
2-4
5-20
TS153□4100A
15.0
4100
10-20
2-4
5-20
TS203□3950A
20.0
3950
10-20
2-4
5-20
TS203□4100A
20.0
4100
10-20
2-4
5-20
TS223□4200A
22.0
4200
10-20
2-4
5-20
TS403□3928A
40.0
3928
10-20
2-4
5-20
TS503□3950A
50.0
3950
10-20
2-4
5-20
TS503□4100A
50.0
4100
10-20
2-4
5-20
TS104□3950A
100.0
3950
10-20
2-4
5-20
TS104□4100A
100.0
4100
10-20
2-4
5-20
TS104□4400A
100.0
4400
10-20
2-4
5-20
 

 



Application

 

NTC temperature sensor not only outputs temperature signal, but also integrates humidity measurement, and the signal output is also changed from the original single signal to a variety of output forms, which can carry out long-distance communication, data can be recorded according to needs, upper limit alarm and automatic control, etc. function.

 

The intelligent integrated NTC temperature sensor used today adopts single-chip microcomputer technology, which is equipped with multiple analog-to-digital signal converters. Its measurement accuracy is higher, and the resolution is as high as 0.03 degrees. It can also integrate a calendar clock to realize multiple measurement modes. The output is more standardized and standardized, which can effectively suppress the interference of the surrounding environment on the temperature signal output, making the measurement value more accurate.

 

►Design considerations and procedure of temperature sensor:

 

1. Choose the shape acoording to customer's design or assemble requirements, and confirm the thermistor.
2. Confirm the thermistor element and other materials according to customers' requirement
3. Choose the suitable resistance,B value and tolerance
4. Choose suitable moisture-proof and insulation technology to meet customer's requirement
5. Choose suitable encapsulation structure to meet performance requirements of mechanical shock resistance
6. Meet customer's special requirements.
 

Features

 

Fast reponse time
Moisture proof, waterproof
Easily assemble

Customized available

 

Application

● Air conditioners, refrigerators, freezers, water heaters, water dispensers, heaters, dishwashers, disinfection cabinets, washing machines, dryers and other home appliances.
● Automobile air conditioner, water temperature sensor, intake air temperature sensor, engine
● Switching power supply, UPS uninterruptible power supply, frequency converter, electric boiler, etc.
● Intelligent toilet, electric blanket, etc.

 

 

Product Description
 

 

TypeNTC Temperature Sensor
Resisitance1K~5M Ω(1k 5k 4.7k 10k 20k 30k 50k 100k 150k 200k 300k)Customized
Beta Value3380k 3435k 3500k 3950k 4050k 4150k 4250k 4450k Customized
HousingCooper/Stainless/aluminum/Brass/Plastic/Nylon/Others Customized
Wire20/22/24/26/28/30/32AWG PP/PVC/PTFE/PFA/TPE/FEP Customized
ConnectorJST/SYP/MOLEX/DUPONT/TE Customized
InstallationFlanged/Surface/Threaded/Plastic/Straight/Film/LUG/SMD/THT Customized
Accuracy0.1% 0.5% 1% 2% 3% 5% 10% Customized
Temperature range-40~300 Customized
Wire Length10mm~10000mm Customized






Applications

Temperature measurement and control of household air-conditioner, refrigerator, icebox,water heater,drinking
machine,radiator,dishwasher, disinfector,washing machine, drying machine,middle-or-low-temperature drying box and constant
temperature box.

Conventional product electrical performance parameters​
Dongguan Linkun Electronic Technology Co., Ltd.
Main technical parameters of sensor series thermistor:
ModelRated resistance value (R25)B valueOperating temperatureDissipation coefficientThermal time constant
Resistance value (KΩ)Allowable deviation (±%)Nominal value (K)(mW/℃)(S)
CWF-102-34351±1% ±2% ±3% ±5%3435-40℃ ～ ＋120℃≥3.0 in still air≤6.0 in still air
CWF-202-343523435
CWF-2.252-39502.2523950
CWF-472-39504.73950
CWF-502-347053470
CWF-502-395053950
CWF-682-39506.83950
CWF-103-3435103435
CWF-103-3470103470
CWF-103-3600103600
CWF-103-3380103380
CWF-103-3977103977
CWF-103-4100104100
CWF-153-3950153950
CWF-203-3950203950
CWF-233-3950233950
CWF-303-3950303950
CWF-333-3977333977
CWF-403-3950403950
CWF-473-4013474013
CWF-503-3977503977
CWF-503-3990503990
CWF-503-4050504050
CWF-104-39501003950
CWF-104-39901003990
CWF-104-42001004200
CWF-204-38922003892
CWF-204-39172003917

 

 


Working principle of temperature sensor

Using the NTC thermistor under a certain measurement power, the resistance value drops rapidly as the temperature rises. Utilizing this feature, the NTC thermistor can be used to determine the corresponding temperature by measuring its resistance value, so as to achieve the purpose of detecting and controlling the temperature.
 

Reliability Test

 

Test ItemTest StandardTest methodPerformance requirements
Zero Power ResistanceIEC 60539-1Immerse samples in the constant temperature bath at 25℃±0.005℃,test steady resistance

Resistance tol ±1%

 

B valueIEC60539-1Immerse 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 voltageIEC60539-1

Withstand voltage: 1500V/AC ,Leakage current:2mA Lasting: 60sec

 

No obvious damage

 

TensionIEC60068-2-21

Pull uniform speed at the end, F>4.0KG(requested by customer)

 

No obvious damage, R25 △R/R≤±1%

 

VibrationQ/HBm 108-94Test 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 heatIEC60068-2-78Temp:40±2℃ Humidity:92-95%RH Time:1000±24Hour

No obvious damage, R25 △R/R≤±1%

 

Thermal time constantEC60539-1Immerse in 25℃ water,after thermal balance,immerse in 85℃,resistance arrives 63.2%,calculate total time

<10 sec

 

High temperature storageIEC60068-2-2Temp:125℃±5℃ Time: 1000±24HourNo obvious damage, R25 △R/R≤±1%
Cold and thermal shockIEC60068-2-14

-40℃~+125℃ T1:30min Cycle time:1000

 

No obvious damage, R25 △R/R≤±1%

 

Knock experimentIEC60068-2-77

Acceleration:250m/s2 Pulse lasting: 6ms Knock times: 1000 Recovery time: 2 Hour

 

No obvious damage, R25 △R/R≤±1%

 

Low temperature storageIEC60068-2-1

Temp: 40±2℃ Time: 1000±24Hour

 

No obvious damage, R25 △R/R≤±1%

 

Salt sprayIEC60068-2-11Temp: 35±2℃ Collection hour : 1.0mL~2.0mL Time: determine per as actual demand

No obvious damage, R25 △R/R≤±1%

 

 

 





 

 
Product Tags: Double Layer NTC Temperature Sensor   Moistureproof NTC Temperature Sensor   Multi Scene NTC Sensor Temperature  
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