NTC Thermistors Temperature Sensor Probe Assemblies

NTC Thermistors Temperature Sensor Probe Description

NTC Thermistors Sensor Assembly

NTC Thermistors Sensor Assembly

NTC thermistor can be assembled in housing in a variety of configurations for temperature sensing, measurement, detection, indicator, monitoring and control. Thermistor temperature sensor probe assemblies can conveniently attach to or be an integral part of any system to monitor or control temperature.

The choice of assembly is dependent on the application. The primary factors which determine the optimum configuration of a thermistor assembly are the operating environment, mounting, time response and minimum dissipation constant.

The two factors which do vary considerably with thermistor sensor probe assembly design are time constant and dissipation constant.
The time constant will typically be of greater duration in encapsulated thermistors. This is, of course, due to additional mass surrounding the thermistor element; therefore, extending the thermal transfer time. Dissipation constant will also be greater in assemblies. The additional housing mass serves well as a heat sink. Greater power is therefore required to induce self-heating.
Both time constant and dissipation constant will vary with the selected thermistor and housing. Heat transfer properties of the housing, thermistor location, mass and wire type determine these constants.

Applications for temperature sensing include air temperature sensors, surface temperature sensors and immersion temperature sensors.

Housings for air temperature sensors are often simple, inexpensive devices such as molded plastic shells, deep-drawn brass or aluminum cylinders, or even stainless steel tubes. Surface temperature sensors are designed to match the contour of the surface to be sensed, whether it’s flat, curved, or round. Mounting holes or clips are often used to simplify installation of the sensor.

Immersion temperature sensors are designed so that the sensing element will be surrounded by the medium to be sensed, often times a liquid. The sensing portion will normally protrude through a hole or orifice while a portion of the assembly will remain outside the medium to allow for the signal to be read. Immersion housings are usually threaded to allow them to be screwed into a hole or opening. Immersion part requests to be liquid and humidity prevention.

The material used for the housing will be dependent upon the temperature range needed, response time, cost, and special considerations such as UL, FDA or NSF requirements in food and/or medical applications. Some of the materials available include stainless steel, copper, plastic, teflon, brass, aluminum, epoxy and heat shrinkable tubing.

The following are examples of some NTC thermistor temperature sensor probe assemblies.

Dimension in the unit: mm

Copper Tube NTC Thermistor Temperature Sensor

Copper tube NTC thermistor temperature sensor

Copper tube NTC thermistor temperature sensor

Application: Temperature measurement in air conditioner for regulating the evaporator temperature, and other HVAC (Heating, ventilation and air conditioning) application.

Copper (brass) tube NTC thermistor temperature sensor probe features

Copper (brass) tube (pipe) case NTC thermistor temperature sensor probe assembly.
PVC insulated wire.
Moisture resistant.
Small, quick temperature response.
High stability under temperature shock.

 Resistance @25C Beta Value
B(25/50C)
 Thermal time constant Dissipation factor Operating temperature
10K ohm±1%3950K±1%5 MW/C10 sec-30C~+105C

Note: Alternative ratings on resistance, Beta value and cable length upon request.

Epoxy Air Thermistor Temperature Sensor

epoxy air thermistor sensor

epoxy air thermistor sensor

Application: NTC thermistor air temperature sensor for air conditioning, floor heating, and other HVAC application.

Epoxy air temperature sensor features

NTC thermistor temperature probe with epoxy resin encapsulation,
PVC-insulated wires
Moisture resistant.
Small, quick temperature response.

 Resistance @25C  Beta Value
B(25/50C)
 Thermal time constant Dissipation factor Operating temperature
10K ohm±1%3950K±1%10 sec5 MW/C-30C~+105C

Note: Alternative ratings on resistance, Beta value and cable length upon request.

ABS Plastic NTC Thermistor Temperature Sensor

ABS Plastic NTC thermistor Temperature Sensor

ABS Plastic NTC thermistor Temperature Sensor

Application: thermistor temperature measurement for refrigerator, freezer, deep-freezer, ice cube makers, counter drinks cooler, backbar and catering coolers, display fridges, wine coolers, and other HVAC application, etc.

ABS Plastic NTC thermistor Temperature Sensor Features

ABS plastic tube (pipe) case thermistor temperature sensor assembly.
PVC insulated connecting cable.
Withstands freeze/thaw cycling. Moisture resistant.

 Resistance @25C Beta value
B(25/50C)
  Thermal time constant  Dissipation factor  Operating temperature
5K ohm±1%3950K±1%5 MW/C10 sec-40C~+80C

Note: Alternative ratings on resistance, Beta value and cable length upon request.

Ring Lug NTC Thermistor Surface Temperature Probes

Ring lug NTC thermistor surface temperature probes

Ring lug NTC thermistor surface temperature probes

Ring lug NTC thermistor surface temperature probes are designed for screw-in-place mounting. Most of these temperature probe housings are standard ring terminals or ring lugs with the thermistor potted in the barrel of the lug, popular for temperature measurement, control, and monitoring of small motors, heat exchangers, computer equipment, power electronics, semiconductor heat-sink temperature control, enclosure panels, industrial equipment, automotive equipment etc. They are also easily mounted in instruments where over temperature protection is required.

Ring lug terminal NTC thermistor surface temperature sensor features

Good thermal coupling through metal tag.
NTC thermistor housed in eyelet nickel plated copper material.
Metal contact surface yields fast temperature response.
PVC insulated leads.
Ring tag eyelets to fit screw mounting.

 Resistance @25 CBeta value
B(25/50C)
 Thermal time constant Dissipation factor Operating temperature
10K ohm±2%3950K±1%5 MW/C15 sec-30C~+105C

Note:
1. Alternative ratings on resistance and Beta value upon request.
2. Other ring hole diameter can be offered upon request for M3, M4, M5, M6, M8, M10, M13 screw thread application.

200C  D3.2mm Ring Lug NTC Thermistor Probe

Round ring flat surface temperature measurement probe

Round ring flat surface temperature measurement probe

Round ring flat surface temperature measurement probe, PTFE wire cable, used for high temperature sensing measurement, such as bread processing machine, induction cooker, and other kitchen cooking utensil, ironing, etc. Convenient for screw-in-place bolt mounting, Ring lug hole diameter available for #4 stud application.

 Resistance @25CBeta value
B(25/50C)
  Voltage withstanding  Dissipation factor  Operating temperature
100K ohm±1%3950K±1%1500V/2sec.15 sec-30C~+200C

Note: Alternative ratings on resistance, Beta value and cable upon request.

Screw-in-place NTC thermistor probe

screw-in-place thermistor probe

screw-in-place thermistor probe

NTC thermistor Surface Temperature Probe, Metal Lug Housing
Surface mount housing, copper lug terminal, with stud mounting hole, jacketed cable, PVC insulation.

Stainless steel oven cooker roaster toaster NTC thermistor temperature sensor

Stainless steel oven cooker roaster toaster NTC thermistor temperature sensor

Stainless steel oven cooker roaster toaster NTC thermistor temperature sensor

Application: NTC thermistor temperature sensor probe assembly for standard domestic oven, microwave oven, electric cooker, roaster, toaster, industrial process control, etc.

Stainless steel oven cooker roaster toaster NTC thermistor temperature sensor probe features

Glass encapsulated thermistor, housed in stainless steel sheath, with rectangle flange, round tip and 1 mounting hole.
For temperature measurement upto 250C.
Reliable operation in hot, damp and fatty air.

Resistance @200CBeta value
B(100/200C)
Thermal time constantDissipation factorOperating temperature
1K ohm±3%4537K15 sec5 MW/C-30C~+250C

Note: Alternative ratings on resistance, Beta value and cable length upon request.

Flag terminal NTC thermistor temperature sensor probe

Flag terminal NTC thermistor temperature sensor

Flag terminal NTC thermistor temperature sensor

Flag terminal NTC thermistor temperature sensor probe, surface mount housing, tin-plated copper flag terminal, with stud mounting hole, applied in industrial equipment, transit, HVAC , power and utilities, computers, home appliances, calibration and instrumentation.

Flag terminal NTC thermistor temperature sensor probe features

Suitable for power supply, motor, heatsink applications.
Copper housing material has excellent thermal transfer characteristics.
Flag terminals are available in several sizes allowing a wide choice of extension wire and cables to be used in the assembly.
Eyelet to fit screw-in-place mounting.

Spherical Ended Stainless Steel Probe

Spherical Ended Stainless Steel Probe

Spherical Ended Stainless Steel Probe, with wide mouth, jacket cable.

Resistance @25CBeta value
B(25/50C)
Thermal time constantVoltage WithstandingOperating temperature
10k ohm±1%3950K15 sec1500V/ 2Sec-40C~+105C

Note: Alternative ratings on resistance and Beta value upon request.

Flared stainless steel tube NTC thermistor temperature probe

Flared stainless steel tube NTC thermistor temperature probe

Flared stainless steel tube NTC thermistor temperature probe

Flared stainless steel tube NTC thermistor temperature sensor probe, “bullet” style temperature probe for air, gas or liquid. Typical application coffee maker, tea kettle, water heater boilers, milk warmer, cooking equipment, and other home appliance.

Resistance
@25C
 Beta Value
B(25/85)
 Thermal time
constant
  Dissipation factor  Operating temperature
10K ohm±2%3977K±1%12 Sec5 MW/C-30C~+105C

Note: Alternative ratings on resistance, Beta value and cable length upon request.

Al tube bread maker thermistor temperature sensor

Al tube bread maker thermistor temperature sensor

Al tube bread maker thermistor temperature sensor

Application: Aluminum tube NTC thermistor temperature sensor probe assembly for coffee maker, cookie maker, bread maker, roaster, toaster and other food processing, especially for coffee maker heating tray, bake tray.

Resistance @200CResistance @25CBeta Value B(100/200C)Voltage withstandingInsulation resistanceOperating temperature
1K ohm230 K ohm4537k1500V/2 secondsVoltage 500VDC,
≥100M ohm
-30C~+200C

Note: Alternative ratings on resistance, Beta value and cable length upon request.

Flanged stainless steel NTC thermistor temperature sensor with 2 mounting holes

Flanged stainless steel NTC thermistor temperature sensor with 2 mounting holes

Flanged stainless steel NTC thermistor temperature sensor with 2 mounting holes

Flanged stainless steel NTC thermistor temperature sensor with 2 mounting holes features

NTC thermistor housed in stainless steel sheath, with rectangle flange and 2 mounting holes.
2 mounting holes, together with O-ring sealing, for better sealing.

 Resistance @25CBeta value
B(25/85C)
Thermal time constant Dissipation factorOperating temperature
10K ohm±1%3977K±1%25 sec5 MW/C-30C~+120C

Note: Alternative ratings on resistance and Beta value upon request.

Pointed tip stainless steel NTC thermistor temperature sensor

Pointed tip stainless steel NTC thermistor temperature sensor

Pointed tip stainless steel NTC thermistor temperature sensor

Stainless Steel Housing Immersion Penetration Probe.

Pointed tip stainless steel NTC thermistor temperature sensor features

Long stainless steel housing, with pointed tip, for easily penetrating and piercing soft and semi-frozen materials, handling for multi-point temperature sensing. Can be used in food processing, oven, liquid (water) boiler. Also ideal for soil and ground measurements.
Fast response.
Can operate in high temperature media.

 Resistance @25CBeta value
B(25/50C)
 Thermal time constant Dissipation factor Operating temperature
100K ohm±1%3990K±1%15 sec5 MW/C-30C~+250C

Note: Alternative ratings on resistance and Beta value upon request.

Food Cooker Meat Probe

Food Cooker Meat probe

Food Cooker Meat probe

Meat probe is used to measure the temperature of cooking food. Application includes home appliance and microwave oven, etc.

Meat probe features:

Stainless steel housing with sharpen tip for easily penetration into the food.
Optional for straight stainless steel tube, or bending at requested position.
copper braided shield cable.
Phone plug termination.
Reliable operation in hot, damp and fatty air.

 Resistance @200C Resistance @25C  Voltage withstanding Insulation resistance  Operating temperature
1K ohm231K ohm1500V/2 secondsVoltage 500VDC,
≥100M ohm
-40C~+250C

Note: Alternative ratings on resistance, Beta value and cable length upon request.

Hex head screw threaded water heater boilers NTC thermistor temperature sensor

Hex head screw threaded water heater boilers NTC thermistor temperature sensor

Hex head screw threaded water heater boilers NTC thermistor temperature sensor

Application: NTC thermistor temperature sensor probe for temperature measurement of liquid, water, air, etc. Typical application coffee maker, tea kettle, drinking water, water heater boilers, chiller system, water and oil tanks, consumer appliances, industrial appliances, solar heating systems, etc.

Hex head screw threaded water heater boilers NTC thermistor temperature sensor features

Immersion NTC thermistor temperature sensor, can be placed directly in the water flow, in direct drinking water contact, to detect water temperature.
Fast time response for water liquid immersion application.
Reduced thermal gradient, due to the use of small tip dimension.
Hex head Screw threaded mounting sensor.
Rugged, resistant to heat shock and moisture.

Resistance @25CBeta Value
B(25/50C)
Thermal time constantDissipation factorOperating temperature
50K ohm±1%3950K±1%7 sec5 MW/C-30C~+105C

Note: Alternative ratings on resistance, Beta value and cable length upon request.

Threaded stainless steel tube NTC thermistor temperature sensor probe

Threaded brass screw-in NTC thermistor temperature sensor

Threaded brass screw-in NTC thermistor temperature sensor

Threaded stainless steel tube NTC thermistor temperature sensor probe for temperature measurement of liquid, water, air, etc. Ideal for vessel and pipe installation. Typical application coffee maker, tea kettle, water heater boilers, soybean milk cooking equipment, and other home appliance.

Threaded stainless steel NTC thermistor temperature sensor features

Immersion liquid probe.
Screw thread mounting sensor.
Threaded design affords greater resistance to shock and vibration.
Quick response.

 Resistance @25C Beta Value
B(25/50C)
 Thermal time
constant
  Dissipation factor  Operating temperature
10K ohm±2%3950K±1%15 seconds5 MW/C-30C~+105C

Note: Alternative ratings on resistance, Beta value and cable length upon request.

Metal Housing Threaded Fitting NTC Thermistor Temperature Probes

Metal Housing Threaded Fitting NTC thermistor temperature probes

Metal Housing Threaded Fitting NTC thermistor temperature probes

Metal Housing Threaded Fitting NTC thermistor temperature probes consists of a thermistor mounted inside a threaded pipe plug. The temperature probes in this series are widely used for temperature sensing in pipe walls, vessel walls, and equipment casings. Ideal for tanks, vessel and pipe installation. Typical application water heater boilers, coffee maker, tea kettle, roaster, toaster, kitchen appliance, building automation systems, compact heat exchanger, closed loop pressurized system, water tank application, as well as other industrial application.

Metal Housing Threaded Fitting immersion liquid NTC thermistor temperature sensor features

Bolt-mount NTC thermistor sensor.
Screw thread mounting sensor.
Available for chassis mounting.
Threaded hex head design affords greater resistance to shock and vibration.
Good thermal coupling through screw-type case.
Metal housings are available in brass or stainless steel or Aluminum material.
Available for a variety of thread sizes.
NTC thermistor sensor assembly optional with O-ring sealing.

 Resistance @25C Beta Value
B(25/50C)
  Thermal time
constant
  Dissipation factor  Operating temperature
range
10K ohm±2%3380K±1%20 seconds5 MW/C-30C~+125C

Note: Alternative ratings on resistance,Beta value and cable length upon request.

Silicon tube NTC thermistor temperature sensor

Silicon tube NTC thermistor temperature sensor

Silicon tube NTC thermistor temperature sensor

Application: silicon tube thermistor temperature sensor probe for home electric appliances, hair beauty appliance, hair curler, hair straightener, other application includes motor temperature sensing, induction cooker, etc.

Silicon tube NTC thermistor temperature sensor probe features

Glass encapsulated NTC thermistor housed in silicon tube.
Wire cable in PTFE.
Quick response.

  Resistance @25C  Beta Value
B(25/50C)
  Thermal time constant  Dissipation factor  Operating temperature
100K ohm±2%3950K±1%12 sec5 MW/C-30C~+200C

Note: Alternative ratings on resistance, Beta value and cable length upon request.

Glass NTC thermistor housed in protection tube

Glass NTC thermistor housed in protection tube

Glass NTC thermistor housed in protection tube

Glass coated NTC thermistor housed in protection tube

Protection tube is available in silica gel.
Cable material is available in either PTFE material, or PVC outside wrapped with heat protection tube.

Washing machine NTC thermistor temperature sensor

Washing machine NTC thermistor temperature sensor

Washing machine NTC thermistor temperature sensor

Application: NTC thermistor temperature sensor probe assembly for washing machine, dish washer, tumble dryer, boiler, etc.

Washing machine NTC thermistor temperature sensor features

Resistant to damp corrosive media, such as soapy water.
Excellent dielectric strength.

  Resistance @60C  Beta Value
B(25/60)
  Thermal time constant
(in water)
  Voltage withstanding  Operating temperature
3.243K ohm3760KMax.20sec3750VAC/2sec-30C~+130C

Note: Alternative ratings on resistance and Beta value upon request.

Threaded brass screw-in NTC thermistor temperature sensor

Threaded brass screw-in NTC thermistor temperature sensor

Threaded brass screw-in NTC thermistor temperature sensor

Threaded brass screw-in NTC thermistor temperature sensor assembly with integral automotive style shrouded connector for immersion application, popular for vehicle engine, oil, water temperature measurement. Also available for HVAC and industrial application, such as transport refrigeration, domestic heating and control, hot tub and pool temperature control.

Resistance @20CResistance @80CResistance @110C Beta Value
B(20/110)
Thermal time constant
(in water)
Voltage withstandingOperating temperature
2.473k ohm±8%0.321k ohm±4%0.144k ohm±2.5%3549k±2%10sec1500V/5sec-30C~+130C

Rivet NTC thermistor temperature probe

Rivet NTC thermistor temperature probe

Rivet NTC thermistor temperature probe

Application:  Rivet NTC thermistor temperature probe is ideal for harsh environments, easily attached to flat surface, application such as induction cooker, coffee maker, milk warmer, water heater, heating board, dryers, etc.

Aluminum case NTC thermistor sensor

Aluminum case thermistor sensor

Aluminum case thermistor sensor

NTC thermistor is potted in Al case, for temperature measurement and control in induction cooker, boiling water, etc.

Al case induction cooker NTC thermistor temperature sensor probe features

Epoxy filled Al cup, end is easy to attach to flat surface.
Construction provides maximum surface contact.

Clip on pipe thermistor sensor

Clip on pipe thermistor sensor

Clip on pipe thermistor sensor

Clip on pipe NTC thermistor sensor description

The steel clip provides a dual function by holding the sensor housing rigidly in place on a straight section of copper tubing while also providing an excellent thermal connection from the copper tube to the sensor. Ideal for inlet or outlet refrigerant sensing, hot water tube, and other arc surface temperature measurement. Installation is fast and simple as the sensor assembly just snaps into place.

Clip on pipe NTC thermistor sensor Features:

Direct clip application to pipe surface. Ideal for pipe clamp mount or rounded surface temperature measurement.
Quick response and excellent thermal tracking.
Simple installation, attaches directly to pipe surfaces.
Rugged, all-metal construction.