
CWF5 Brass Thread Water Temperature Sensor 200KOHM For Testing Temperature Change of Water Tank
Description
Thermistor probes are invaluable for sensing temperature levels in a variety of industries ranging from HVAC and food handling to automotive and laboratory research. In such applications, it's critical that the thermistor probe used is accurate to ensure reliable thermal monitoring.
A world-class provider of thermistors and thermistor probes and
assemblies, We offers temperature probes designed and built from
the ground up. The thermistors we use are created from a precise
blend of raw materials and processed using proprietary techniques
that result in superior discrete components, probes and assemblies.
We manufactures laboratory grade temperature probes, surface
temperature sensing probes, micro probes, as well as many others
designed to suit specific applications. Our application engineers
are experts in the design of temperature sensing probes and
assemblies utilizing thermistors as well as RTDs suitable for the
most demanding applications.
PDF File:
NTC Temperature Sensor Profile 1 of 2.pdf
NTC Temperature Sensor Profile 2 of 2.pdf
Dimension(unit:mm)
Series: CWF 5
Chips-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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Part numbering
Normal models
CWF1 Epoxy resin coating | ![]() |
CWF2 Aluminum, copper, stainless steel cap | ![]() |
CWF3 Plastic cap | |
CWF4 Fixed sheet metal | |
CWF5 Special shape |
NTC Temperature sensor -- a glance at workshop
Advantages and characteristics of Auto Temperature Sensor
(Highest tolerance can be reach ±0.02℃) (Years of drif rate ≤1‰)
Operating temperature and environment of NTC temperature sensor depend on specific performance of its core element and lead wire:
►Different NTC thermistor using in the NTC temperature sensors with the following different operating temperature:
Chip or MF52A,MF51E,MF55: temperature resist grade 125℃,actual
temperature resist grade 150℃
MF58: temperature resist grade 200℃,actual temperature resist grade
250℃
MF51: temperature resist grade 200℃,actual temperature resist grade
250℃
Special MF51: temperature resist grade 250℃,actual temperature
resist grade 300℃
Weldless chip:temperature resist grade 450℃,actual temperature
resist grade 500℃
►Operating environment
In the environment of high temperature,high humidty and high corrosion,we suggest to use glass sealed type thermistor as the core element.And MF51 type will be the best NTC thermistor in high humidity environment.
►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.
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% |
Introduction of test and inspection equipments
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 |
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 : 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 |
Guangdong Uchi Electronics Co.,Ltd
Uchi was established in 2006 in Dongguan, China.
After years of development, Uchi has become a large scale hi-tech
enterprise that specialized in development and production of
complete series of MOV,PTC, NTC series, PPTC series, Fuse(ALL
TYPE),Resistor、integrated circuit 、 Capacitor, surge protector and
protective devices of lightning protection products. It ranks front
in the industry and has heartquarter in Hong Kong. With its
excellent technology and quality products, Uchi has won wide
recognition of overseas customers. Saini Impex PVT.LTD is our
authorized sole distributor in india .
China's leading enterprise of circuit protection components
Our strength :
A large number of product series in our factory have passed the
certification of various international standards
Factory Tour :
Advanced equipment, lean production
Uchi boasts with a production base that covers an area of nearly
15000 square meters.
We successively imported high-tech fully automated production
equipments and high precision testing instruments and have put into
production to realize the automation, large scale and
standardization.
Uchi has a galaxy of hi-tech talent teams headed up by national
class experts to engage in the work of product development, product
quality control, sales andservice technical support, etc., and has
successively obtained tens of certificates of appearance patents,
utility patents and inventions.
To guarantee the quality, we successfully passed the certification
of ISO9001:2008 quality management system, scientific and efficient
managing mode to carry out lean production and form scientific and
efficient quality control system. The products are certified with
UL, CUL, TUV, VDE, CSA and SGS, RACH 73 environmentally friendly
testing certifications.
Exquisite quality at customers' favor
Uchi is an export membership of Alibaba with free import and export rights. It is appraised as Guangdong Famous Star Enterprise and Dongguan Private Enterprise. Our products have doubled and redoubled to provide more kinds and high quality and reliable products and service. Our products mainly consist of:
Metal Oxide Varistor
DIP Varistor & SMD Varistor
Thermally Protected Varistor
DC-Link Capacitor for New energy vehicles supporting the HEVEV
Automotive Fuse Links for EV Plugin HEV FCEV
PTC Thermistor
NTC Thermistor
PPTC Resettable Fuse
Thermal Fuse
Auto Blade Fuse
Glass Fuses
Metal Film Resistor
Carbon Film Resistor
Cement Resistor
NTC Temperature Sensor
CDS Photoconductive Cell
Our products are widely used in New energy vehicles, home appliance, medical equipment, office equipment, communication
equipment, phone battery, electronic calendar, electronic
thermometer and temperature controller to cover military
telecommunications, IT, automobile and consumer electronic fields.
Cooperation with good faiths to win in the market.
Excellent quality sincere service is the key to the success of
Uchi.
In the future Uchi will still stick to the tenets of "Quality
first, customer foremost." "First class quality, first class
service and customersatisfaction" to manufacture the high quality,
technically advanced and reasonable prices products. We hope to
trigger with global partners the revolution in resistor products.
We cordially welcome friends from home and abroad to visit us for
guidance and cooperation.