Active Member
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[China]
Address: Bld. 15,Yanhe East Road,Xiangdong Village, Dalingshan Town,Dongguan 523833,Guangdong,China
Contact name:Sophia
Dongguan Hongqing Electronic Technology Co., Ltd1 |
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Customized CWF Precision Stainless Steel NTC Micro Temperature Sensor 10KOhm 1% For Home Appliances
Popular products display
a.CWF1 Packed with epoxy resin
| Dimension(mm) | Code | S1 | S2 | S3 | S4 | Function | Main application |
 | Dmax | 4 | 5 | 6 | 7 | Moisture-proof,small time contant,fast respond | Household air-onditioner, refrigerate. |
| L1max | 16 | 16 | 16 | 16 | |||
| Cable | 28# | 26# | 24# | 22# | |||
| L2 | To be advised | ||||||
b.CWF2 Packed with aluminum,copper,stainless steel etc.
| Dimension(mm) | Code | S1 | S2 | S3 | S4 | S5 | S6 | S7 | Function | Application |
 | Dmax | 4 | 5 | 5 | 5 | 6 | 6 | 6 | Moisture-proof,large coefficient, excellent stability | House hold air-conditioner refrigerate heater |
| L1max | 20 | 20 | 25 | 30 | 20 | 25 | 30 | |||
| L2 | According to customer’s requirement | |||||||||
c.CWF3 Packed with plastic
| Dimension(mm) | Code | S1 | S2 | S3 | S4 | Function | Application |
 | D | 3.5 | 4 | 5 | 6 | Moisture-proof, Excellent coherence,voltage withstand | House hold, air-onditioner, refrigerate. |
| L1 | 15 | 15 | 15 | 20 | |||
| L2 | To be advised by customer | ||||||
 | D | 4 | 8 | 8 | |||
| L1 | 10 | 35 | 50 | ||||
| L2 | To be advised by customer | ||||||
d CWF4 Fixed sheet metal added
| Dimension(mm) | Function | Application |
| It can be meet with different mount requirement because of agility dimension | Fan control, industry meter |
e CWF5 Special packed shape
| Dimension(mm) | Function | Application |
 | Small time constant,fast respond,stability. | Applied in high temperature environment,heater, coffee oven,etc. |
Main Technology Parameters
| Part number | Rated resistance R25 | B value (25/50) | Dissipattion Coeffient.
| Thermal time constant | Operating temperature | ||
| Range KOhm | Tolerance % | (K) | Tolerance % | Mw/℃ | sec | ℃ | |
| CWF□□□3100 | 0.1~20 | ±1 ±2 ±3 ±5 | 3100 | ±1 | ≥2.2 | ≤70 | -55~+125 |
| CWF□□□3270 | 0.2~20 | 3270 | |||||
| CWF□□□3380 | 0.5~50 | 3380 | |||||
| CWF□□□3470 | 0.5~50 | 3470 | |||||
| CWF□□□3600 | 1~100 | 3600 | |||||
| CWF□□□3950 | 5~100 | 3950 | |||||
| CWF□□□4000 | 5~100 | 4000 | |||||
| CWF□□□4050 | 5~200 | 4050 | |||||
| CWF□□□4150 | 10~250 | 4150 | |||||
| CWF□□□4300 | 20~1000 | 4300 | |||||
| CWF□□□4500 | 20~1000 | 4500 | |||||
Description
Thermistor probe assemblies are micro temperature sensors consisting of highly accurate and reliable thermistor elements processed in conjunction with other components. These sensors are custom assemblies offered in various form factors, catered to our customers' applications and needs.
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NTC Thermsitor inside micro Temperature Sensor are temperature-sensitive resistors of negative temperature coefficient of resistance – resistance decreases exponentially with temperature increase. Thanks to their high sensitivity, the NTC thermistors are widely used as temperature sensors, temperature compensator, and inrush current limiter.
Micro Temperature Sensor are epoxy coated and is designed for general purpose of temperature sensing, measurement, or control in the applications. It can be integrated with silicone wires or tinned copper-cladded steel leads so as to meet various requirements of electrical interface.
The sensing element (NTC thermistor chip) of this series is located at the end the epoxy sealing. The epoxy sealing can be achieved in a small diameter for not only fast response time but also application in limited space.In addition, the customized NTC thermistors can be available on request, e.g., customized resistance, B constant, or length of the wires or leads.
How to get offer quickly with enough specification ?
1. Operating temperature range : ?
2. Application environment: ?
3. Material and dimension of Housing: ?
4. Specification of sensing element : ? NTC/DS18B20/RTD etc.
(For example: If sensing element is NTC Thermistor, then Resistance at 25degree is 10KOHM,Resistance tolerance is ±1% ; Beta value is 3950,Beta tolerance is ±1%)
5.Cable gauge and length
6. How to deal with tail of cable ? Only stripped and tinned ?Attach connector or stripped & tinned ? If attach connector,pls let us know part number of connector and we will recommend suitable one.
7. Any special requirements ? For example; Tolerance for sevaral temperature point etc.
8. Estimated quantity required
P.S.: If you can provide us datasheet/drawing or famous MPN ,then you have no need provide above info
Features
High precision
Can be in different housing such as stainless steel , aluminum ,plastic,ring lug etc.
Cable model : mainly UL rated such as 105C,PVC 125C,Silicone 150C ,180C,200C PTFE,300C Stainless braided cable,etc.
Excellent uniformity/stability/reliability for mass production
Main application : home appliances, BBQ , Medical,Automoble
Application
Temperature measurement and control of household and automobile air-condition,refrigeratory, icebox, water heater, drinking through, radiator, dishwasher, disinfector,washing machine, drying machine, middle-or -low-temperature drying box and constant temperature box .
Application Examples
NTC Thermistor & Temperature Sensor application example #1:
Temperature measurement for medical devices
NTC Thermistor & Temperature Sensor application example #2:
Temperature measurement for medical devices
NTC Thermistor & Temperature Sensor application example #3:
Temperature measurement for medical devices
NTC Thermistor & Temperature Sensor application example #4:
Temperature measurement for automotive applications
NTC Thermistor & Temperature Sensor application example #5:
Temperature measurement for office automation applications (copy
machine, printer, fax machine)
NTC Thermistor & Temperature Sensor application example #6:
Temperature measurement for home electronics (air conditioner)
NTC Thermistor & Temperature Sensor application example #7:
Temperature measurement for home electronics (refrigerator)
NTC Thermistor & Temperature Sensor application example #8:
Temperature measurement for home electronics (microwave oven)
NTC Thermistor & Temperature Sensor application example #9:
Temperature measurement for home electronics (fire alarm)
NTC Thermistor & Temperature Sensor application example #10:
Temperature measurement for home electronics (CCTV)
NTC Thermistor & Temperature Sensor application example #11:
Temperature measurement for home electronics (gas stove)
NTC Thermistor & Temperature Sensor application example #12:
Temperature measurement for home electronics (water boiler)
NTC Thermistor & Temperature Sensor application example #13:
Temperature measurement for home electronics (comfort toilet)
NTC Thermistor & Temperature Sensor application example #14:
Temperature measurement for home electronics (camera)
NTC Thermistor & Temperature Sensor application example #15:
Temperature measurement for home electronics (tablet & laptop
computer)
Sensing Element-NTC thermistor used
Workshop of high quality and high performance NTC Thermistor
We have the unique process and leader core technology with
proprietary intellectual property rights of ceramic powder
equipment,made of chips,high performance NTC Automatic batch
production.
We have more than 12 series of high performance NTC thermistors
automatic production line,products have the advantages of large
production,high quality,good coherence,high reliability,besides it
can be made of many kinds of NTC temperature sensors,it also can be
supplied to other factories of NTC sensors,and exported in large
quantities to overseas.
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NTC Temperature sensor -- a glance at workshop
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%
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| 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%
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| Free fall | IEC60068-2-32
| Fall height: 1.5±0.1m,Surface: Cement , 1 time | No obvious damage, R25 △R/R≤±1%
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| Insulation | IEC60539-1
| 500V pressure on insulation shell test insulation resistance | >500MOhm
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| Withstand voltage | IEC60539-1 | Withstand voltage: 1500V/AC ,Leakage current:2mA Lasting: 60sec
| No obvious damage
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| Tension | IEC60068-2-21 | Pull uniform speed at the end, F>4.0KG(requested by customer)
| No obvious damage, R25 △R/R≤±1%
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| 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%
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| Steady humidity and heat | IEC60068-2-78 | Temp:40±2℃ Humidity:92-95%RH Time:1000±24Hour | No obvious damage, R25 △R/R≤±1%
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| Thermal time constant | EC60539-1 | Immerse in 25℃ water,after thermal balance,immerse in 85℃,resistance arrives 63.2%,calculate total time | <10 sec
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| 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%
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| 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%
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| Low temperature storage | IEC60068-2-1 | Temp: 40±2℃ Time: 1000±24Hour
| No obvious damage, R25 △R/R≤±1%
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| 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%
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Introduction of test and inspection equipments
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Name: High/Low-Thermal Shock Chamber Function:test product withstand high/low-thermal shock chamber | Name : Constant temperature and humidity chamber Function: test products storage state under steady damp and heat |
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Name : Vibration testing equipment Function : test the effect on product during transportation generated by vibration frequency and amplitude | Name : Salt spray test machine Function: Test product resistance to oxidation,corrosion |
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Name : Laser particle size analyzer Function : Analyse material of laser particle size | Name : Vacum & high temperature dry oven Function : high temperature aging test |
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Name : Spectrum analyzer Function : analyze harmful substance content of products | Name : Electrolytic thickness gauge Function : Used for testing coating thickness of raw material |
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Name : Constant temp oil bath instrument Function : test ambient temperature at constant point resistance (tolerance ±0.002℃) | Name : Low Temperature precision test sink Function : Test temperature at constant point resistance during -70℃~0℃ (tolerance ±0.01℃) |
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Name : DC constant voltage and constant current power supply (high current) Function : Test U-I Curve | Name : High precision thermistor sorter Function : Test resistance of thermistor |
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Name : Dissipation and thermal time constant testing instrument Function : Test dissipation and thermal time constant | Name : NTC Impact tester Function : Test impulse capacitance which products can endure |
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Name : Withstand voltage test instrument Function : Test insulation withstand voltage | Name : DC constant voltage power supply Function : Test rated power consumption |
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Name : Projector Function : Test out appearance and inner structure | Name : Elongation rate instrument Function : Test elongation rate of leads |
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Name : Overload aging test machine Function : Electricity aging test of temp measurement products | Name : Chemical experiment table Function : Chemical blending |
 | Name : Aging stage Function : Test aging reliability of product |
