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.
Type | NTC(thermistor) Temperature Sensor |
Temperature range | -50℃ ~ +300℃；Customized |
Accurancy | 1%；5%；10% |
| 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 |
Features
Proven Stability and Reliability,
Cost effective solutions
Variety of metal and plastic housings and tubings designed for
specific applications
Potted with different kinds of resin for good sensor protection
Available with special kinds of cables (2-core cables or stranded
with PVC, Silicone, or Kynar insulation,cables with screen &
other), connectors and other attachments
Provides good protection from the environment conditions
Proven high voltage strength and dynamic strength
Wide range of Resistance/Temperature, characteristics
Designed for temperature measurement, control and compensation
Material, type and size:
Thermistors are bulk semiconductor devices and as such can be
manufactured in a variety of forms. More common ones include discs,
beads and rods. Sizes do vary from 1mm beads to discs a few
centimeters in diameter and thickness.
There are different types of thermistors, most of which respond
differently to changes in temperature. Thermistors are not linear
and their response curves vary from type to type. Some thermistors
have a nearly linear temperature-resistance relationship, others
have a sharp change in slope (sensitivity) at a specific
characteristic temperature.
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
