CUSTOM THERMISTOR SENSOR

CU

ST

OM

SE

NS

OR

SO

LU

TIO

NS

CUSTOM

THERMISTOR SENSOR SOLUTIONS

CAT.NO.137B

Body Temperature Measurement

・ Fμ Sensor

・ 503ET-3H87U

・ FT-ZM

Non Contact Sensors

・ NC Sensor

・ Thermopile Module

・ HF-N Sensor

・ Thermopile

OA Equipment

・ Printer / Copy Machine

Industrial Equipment

・ Liquid Temperature Measurement

・ Pipe Temperature Measurement

・ Heat sink

・ Cooking Appliances

・ Heater Temperature Measurement

Home Appliances

・ Air Conditioning

・ Refrigerator

・ Microwave Oven

・ Water Heater / Warm Water Toilet Seat

・ Power Conditioner

・ Rechargeable Battery

・ Fire Alarm

Medical

・Catheter

・Thermometer / Ear Thermometer

・ Controller Unit

・ Motor

・ Battery / Capacitor

Screw Mount Sensor

・ Screw Mount Sensor

・ Flange Pipe Sensor

2

Standard Assembly Products

・Stock Items

Low Temperature

・ Pipe Sensor

・ Dip Sensor

High Temperature

・ FS, HF Sensor

・ Teflon Tube Sensor

・ Flange Pipe Sensor

・ Screw Mount Sensor

・ Screw Pipe Sensor

Liquid Measurement

・ SUS 3 Level Pipe Sensor

・ SUS Pipe Sensor

・ Screw Pipe Sensor

Screw Type Sensors

・ Screw Type Pipe Sensor

Surface Measurement Sensors

・ FS, HF Sensor

・ FT-ZM

・ Standard Assembly

INDEX

P4 - 5

P6 - 7

P8

P9 - 11

P12 - 13

P14 - 15

①

②

③

NON CONTACT

⑬

⑬

⑭

⑮

⑰ ⑲

㉑

㉖㉘

④ ⑤ ⑥

⑪

㉒ Ⓕ

㉝

㉓

㉔

㉘

⑦ ⑧ ⑨ ㉒㉕㉚㉜ Ⓑ Ⓒ Ⓔ Ⓕ

㉑㉛

⑩ ㉘㉝

④ ⑤ ⑥

⑮

Ⓓ

By application By characteristics

High Accuracy

High

Speed

Ultra Small

High Speed

Automotive

This catalog contains a selection of representative products. Please contact us if you need your own custom sensor solution.

We recommend to check below items before selecting a sensor

3

■ Purpose / Environment 1） In what kind of device will it be used?

Device: （E.g.: Outside unit of air conditioning, inside of a refrigerator 2） How will it be mounted?

Mounting: （E.g.: Mounted with holder on a pipe 3） In what kind of environment will it be used?

Environment: （E.g.: Room temperature, max. temperature 180℃, etc. 4） Are there other requirements regarding responsiveness, temperature accuracy, etc.?

Others:（

■ Temperature 1） The temperature range in which the product or sensor is used is ( )℃ to ( )℃. 2） Temperature to be measured or temperature to be controlled is ( )℃ to ( )℃.

■ Characteristics 1） Desired resistance value (Zero Power Resistance)

( kΩ ±( )% at ( )℃ 2) B Value （Calculated from the resistances at 2 temperature points）

( )K ± ( )% Temperature ( )℃, ( )℃ 3) Electrical performance

Withstand voltage （）Ｖ（）sec.

Insulation resistance （）Ω

）

）

）

Simply said this is a circuit that converts the

temperature of the thermistor into voltage.

（Ｒ2 and Ｃ1 are noise filters）

For the thermistor Ｒ1 the voltage is measured in

a voltage-dividing circuit ＲTH using a Peripheral

Interface Controller (below PIC).

The electric current to the PIC is minimal and can

be ignored.

■ Temperature – Voltage Conversion Circuit

Basic Thermistor Characteristics & Application Circuit Example

■ Resistance – Temperature Characteristics

The relationship between resistance and temperature

within a given temperature range is approximately as

in the formula 1 below.

R1=R2exp［B( - )] T1 T2

1 1 （Formula 1）

T1, T2

R1, R2

B

: Absolute temperature（K）

: Zero Power Resistance（Ω） at T1,T2

: B value (K)

）

Thermistor

R1, C1 are noise, filter.

Time constant = C x R = 47ms

Features: A non contact Sensor based on infrared detection that

has very strong heat and dirt resistance.

◆Thermal Time Constant: approx. 46ms

4

①NC Sensor

OA Equipment

Printer / Copy Machine

Non Contact

◆Thermal Time Constant: approx. 1.3 sec. ◆Dielectric Strength Voltage: AC 500V 1 sec.

◆Insulation Resistance: DC500V 100MΩ+

※1: Without connector

②Thermopile Module

③HF-N Sensor

Unit: mm

Zero Power Resistance R180 = 7kΩ±5% :

B value Ｂ25/85 = 3370Ｋ±3% :

Temperature range -20℃ - 230℃ (Sensing part) :

Source Voltage 3.2V - 6V :

Temperature range -25℃ - 100℃ :

Non Contact

Unit: mm

B value Ｂ25/85 = 3370Ｋ±1% : ※1 -10℃ - 150℃ Temperature range :


: Measurement temp. range -10℃ - 260℃

Output Voltage 0.2V - 2.8V :

Measurement temp. range -20℃ - 250℃ :

Features: A non contact Sensor based on infrared detection that

measures temperature easily and accurately.

Non Contact

Unit: mm

Features: A Sensor that allows non contact measurement with

conventional thermistor systems.

Leads Connector

Thermopile

Connector

Leads Connector

5

④FS Sensor

OA Equipment

◆Thermal Time Constant: approx. 1.0 sec. (roller) ◆Dielectric Strength Voltage: AC 600V 1 sec.

◆Insulation Resistance: DC 500V 100MΩ+


B value Ｂ25/85 = 3370Ｋ±3% :

Temperature range -20℃ - 230℃ (Sensing part) :

⑤HF-H Sensor

◆Thermal Time Constant: approx. 0.7 sec. (roller) ◆Dielectric Strength Voltage: AC600V 1 sec.



B value Ｂ25/85 = 3370Ｋ±3% :

Temperature range -20 - 230℃ (Sensing part) :

⑥HF-L Sensor

◆Thermal Time Constant: approx. 1.0 sec. (roller) ◆Dielectric Strength Voltage: AC600V 1 sec.


Features: A low friction type sensor that reduces damage to the fuser roller

to a minimum.

Features: A high speed type temperature sensor that can quickly respond to

temperature changes of the fuser roller.

Features: A space saving type of temperature sensor with lead wires parallel

to the fuser roller.

Lead

Wire


B value Ｂ25/85 = 3370Ｋ±3% :

Temperature range -20 - 230℃ (Sensing part) :

Unit: mm

Unit: mm

Unit: mm

Connector Leads

Leads Connector

Connector Leads

⑦Screw Mount Sensor

Automotive

Controller Unit

◆Thermal Time Constant: approx. 75 sec.

◆Dielectric Strength Voltage: AC 600V 1 sec.


Zero Power Resistance R75 = 7.214kΩ±5% : B value Ｂ0/100 = 3970Ｋ±2% : Temperature range -40℃ - 130℃ :

⑧Screw Mount Sensor

6

Features: A screw mount type temperature sensor with very good heat

conductivity that allows the sensing of high temperatures.

Features: A screw mount type temperature sensor with very good heat

conductivity that allows highly accurate sensing of high temperatures.

⑨Screw Mount Sensor

◆Thermal Time Constant: 80 sec. max. ◆Dielectric Strength Voltage: AC 600V 1 sec.


B value Ｂ25/85 = 3182Ｋ±1% :

Features: A temperature sensor that resists screw tension and can therefore be

used for a long time.

黄銅リング

-40℃ - 90℃ : Temperature range





B value Ｂ25/85 = 3435Ｋ±0.5% :

Zero Power Resistance R25 = 10.0kΩ±0.5% :


Resin Form

Unit: mm

Unit: mm

Unit: mm

L1

L2

Screw Mount (brass) Polyimide Tube

Tin Plating

Polyimide (Glass)

Screw Mount

(Brass) Epoxy

Wire (PVC)

Brass Ring Tin Plating

R25 = 10.0kΩ±1%




(2) Ｌ

⑩Screw Type Pipe Sensor

Automotive

Motor





⑪Teflon Tube Sensor

◆Thermal Time Constant: 7 sec.



7

Features: A screw type temperature sensor with high accuracy and excellent

climate resistance.

Features: A temperature sensor with a thin tip and excellent responsiveness.

Connector

※1:without connector


※1

B value Ｂ25/85 = 3435Ｋ±0.5% :

⑫Slim Case Sensor

B value Ｂ25/85 = 3435Ｋ±1% :

Features: A slim case sensor with high electric strength voltage that fits

easily into narrow spaces.

ケース

Lead Wire (35.5)

(9.9

)


Zero Power Resistance :

Zero Power Resistance R100 = 1.0kΩ±5% :


B value Ｂ0/100 = 3387Ｋ±2% :

Battery / Capacitor

Unit: mm

Unit: mm

Unit: mm

Brass Ring

Screw Case (Brass) Epoxy Tube

(Glass) Wire

(PVC)

Wire (PFA) Shrink Tube (PFA) Thermistor Silicon

Case

-20℃ - 100℃

Thermistor B value

Output Voltage

3435K±0.7%

Unit: mm

GroupR37　（ｋΩ )

Min/Center/MaxGroup

R37　（ｋΩ )Min/Center/Max

A 29.614/29.629/29.644 B 29.645/29.660/29.675C 29.676/29.691/29.706 D 29.707/29.722/29.737・・

・・

S 30.172/30.187/30.202 T 30.203/30.218/30.233U 30.234/30.249/30.264

⑬Fμ Sensor

Catheter


B value Ｂ0/50 = 3454Ｋ±1% :


⑭503ET-3H87U

◆Thermal Time Constant: approx. 5.0 sec.

⑮FT-ZM


B value Ｂ25/85 = 3435Ｋ±1% :


⑯Thermopile

High Speed

Ultra Small

8

High

Accuracy

Features: Ultra small temperature sensor with high response speed.

Features: Small and highly accurate sensor optimized for

body temperature measurement.

Features: Small temperature sensor with high response speed

optimized for measuring surface temperatures.

Features: Non contact temperature sensor using infrared measuring Non Contact


（in water)

Temperature range : -40℃ - 100℃

R37 = 29.614 - 30.264kΩ Zero Power Resistance :

Group temp. tolerance R37±0.05% / Group :

B value Ｂ32/41 = 3943Ｋ±0.5% :

●R37 Group (A - U)

◆Thermal Time Constant: approx. 15ms

◆Angle : ±50deg.

◆Transparent wavelength band: Cut on 5μm

R25 = 100ｋΩ±3% Thermistor Resistance :

:

1.00±30ｍV :

Temperature range :

Thermometer / Ear Thermometer

Unit: mm


Unit: mm

Unit: mm

Solder Coated Urethane CP Wire (0.12

diameter)

Coated Polyurethane 0.08 CP Wire

Aluminum

Epoxy Solder

Polyimide AWG38 Polyesterimide Coating

Medical

Temperature range : -35℃ - 35℃

⑰Copper Pipe Sensor

エアコン


(in stirred water）



Refrigerator

9

⑱Dip Sensor

◆Thermal Time Constant: ca. 5 sec.（in stirred water）

◆Dielectric Strength Voltage: AC 2200V 1sec.



B value Ｂ25/50 = 3950Ｋ±2% :


⑲Resin Pipe Sensor




⑳Thermopile Module

Features: A temperature sensor that is inserted into a copper pipe and can

be used for a wide variety of purposes.

Features: A temperature sensor that has been dipped in epoxy resin and

optimized for measuring room temperature.

Features: A temperature sensor in a resin pipe that allows accurate

measurement of low temperatures.

Features: A module version of the infrared based

Thermopile non contact Sensor. Non Contact

◆Response : approx. 10ms

◆Angle : type55

◆Rated voltage : ＋5.5V

Measured Temperature: 0℃±3.0℃ :

Measuring temp. range: -35℃ - 35℃

Output Voltage : 0.547V - 3.453V

Air Conditioning


B value Ｂ25/50 = 4120Ｋ±2% :



B value Ｂ25/85 = 3435Ｋ±1% :


Unit: mm

Unit: mm

Unit: mm

Unit: mm

Thermistor Epoxy PVC Wire

(105°C heat resistant) Connector

Resin pipe Epoxy PVC Wire

(105°C heat

resistant)

Solder

Thermopile Connector Resin

Thermistor Epoxy Shrink Tube Shrink Tube

Thermistor

Connector Tube (105°C Tube (105°C

Home Appliances

※1

Screw Mount Sensor

Microwave Oven




Water Heater / Warm Water Toilet Seat

Flange Pipe Sensor

◆Thermal Time Constant: approx. 9 sec. (room temperature)



SUS 3 level Pipe Sensor

◆Thermal Time Constant: under 1 sec.

(in stirred water）



SUS Pipe Sensor

◆Thermal Time Constant: ca. 3.6 sec.(in stirred water)



10

2 2

2 1

2 3

2 4

Features: Easy to mount highly heat resistant temperature sensor with

integrated flange.

Features: A highly heat resistant screw mount type temperature sensor with a metal

terminal part.

Features: A temperature sensor optimized for water temperature measurement

with thin SUS Pipe terminal for high response speed.

Features: A temperature sensor optimized for water temperature measurement

that is inserted into an SUS Pipe.

※1: without connector

Zero Power Resist. R50 = 4.367kΩ±5% :

Temperature range - 30℃ - 180℃ (Sensing part) :

B value Ｂ0/100 = 3450Ｋ±3% :

Zero Power Resistance: R75 = 7.241kΩ±7% :

Temperature range : -20℃ - 200℃ :

B value Ｂ0/100 = 3970Ｋ±2% :



B value Ｂ0/100 = 3970Ｋ±2% :


Temperature range : -20℃ - 80℃ :

B value Ｂ0/100 = 3970Ｋ±2% :

Unit: mm

Unit: mm

Unit: mm

Unit: mm

Thermistor Epoxy

Polyimide

Ni-plated CP wire Silicon-Glass Mesh Tube

Brass mount

Leads

Connector

SUS316 L Pipe with Brass Ring

Presser Plate

Presser Plate

Polyimide

SUS 304 Pipe

Shrink Tube

Connector PVC Wire Crimp Contact

Flange Bend

PVC Wire (<105°C) Connector

Home Appliances

Home Appliances

Power Conditioner




火災報知機

11

Screw Mount Sensor

◆Thermal Time Constant: approx. 5 sec.(in stirred water)




B value Ｂ25/85 = 4120Ｋ±1% :


Dip Sensor (AR)


◆Dielectric Strength Voltage: AC 600V1 sec.


Dip Sensor

Rechargeable Battery

2 5

2 6

2 7

Features: Formed resin screw mount type temperature sensor with excellent insulation.

Features: Highly reliable temperature sensor that has been dipped in epoxy resin.

Features: Highly responsive temperature sensor that has been dipped in epoxy resin.

Shaped resin (UL94HB)

Contraction tube Lead wire Connector

Lead wire

Thermistor chip (AR)

Lead frame

Epoxy

Epoxy


B value Ｂ25/85 = 4013Ｋ±1% :



B value Ｂ25/85 = 4021Ｋ±1% :


Fire Alarm

Unit: mm

Unit:mm

Unit:mm

SUS Clip


Liquid Temperature Measurement

◆Thermal Time Constant: approx. 20 sec. (in stirred water)

◆Dielectric Strength Voltage: AC1200V 1 sec.


Heat Sink

12

◆Thermal Time Constant: 0.6 sec. (Roller)



Clip Sensor




Screw Mount Sensor

Pipe Temperature Measurement

Screw Type Pipe Sensor 2 8

2 9

3 0

Features: Screw type temperature sensor that can be used in water / oil tanks.

Features: A temperature sensor that can be directly mounted to pipes and

can be easily exchanged for maintenance.

Features: A temperature sensor that can easily be mounted

with М３ / М５ screws.

Tube

SUS Pipe

Lead Wire

Thermistor

Terminal

M5 metal terminal □0.5 tin plated 42 alloy


B value Ｂ25/85 = 3435Ｋ±1% :



B value Ｂ25/85 = 3969Ｋ±1% :



B value Ｂ25/85 = 3976Ｋ±0.5% : Temperature range -50℃ - 150℃ :

M3 metal terminal

Unit: mm

Unit: mm

Unit: mm

□0.5 tin plated 42 alloy

L1

L2

Flange Pipe Sensor


Cooking Appliances




◆Thermal Time Constant: ca. 78 sec.






Heater Temperature Measurement

13

Screw Mount Sensor

M5 Screw Type Sensor

3 1

3 3

3 2

Features: Easy to mount temperature sensor with integrated flange.

Features: Highly heat resistant Screw Mount type temperature sensor with

metal terminal.

Features: Screw Mount type temperature sensor that can be mounted

directly to the heater block.

※1:Without connector

※1:Tip M5 screw part only

SUS Pipe Lead Wire

Brass bracket

Glass braided tube Lead Wire

Connector


B value Ｂ25/85 = 3200Ｋ±2% :



B value Ｂ0/100 = 3970Ｋ±2% :

Temperature range -20℃ - 180℃ : ※1


B value Ｂ25/85 = 3750Ｋ±3% :


※1

Unit: mm

Unit: mm

Unit: mm

L1

L2

Brass Pipe with M5 Screw Fluorine Rubber Wire Connector

Ⓓ

Ⓒ

Type R25 Ｂ25/85 Resin color Temp. range ℃

EC2F102A2-71014 1kΩ ±1％ 3100K±1％ Light blue

EC2F202A2-71048 2kΩ ±1％ 3182K±1％ Red

EC2F502A2-40103 5kΩ ±1％ 3324K±1％ Gray

EC2F103A2-40113 10kΩ ±1％ 3435K±1％ Black

EC2F203A2-70030 20kΩ ±1％ 4013K±1％ Blue

EC2F503A2-70456 50kΩ ±1％ 4060K±1％ White

EC2F104A2-60109 100kΩ ±1％ 4665K±1％ Green

-40～+110

-40～+90

14

Standard Assembly Products

Ⓐ xxxAT-11



103AT-2-34119

EC2F103A2-40113-600AY

103JT-025-600AY

Ⓑ

EC2F103A2-xxxxx



Dissipationfactor

Max. powerdissipation

Temp. range

ｍW/℃ mW at 25℃ ℃

10.0kΩ ±1% 3435K±1％ approx. 3.0 approx. 80 15 -10～+105

R25 B25/85Thermal time

constant s※１

Dissipationfactor


Temp. range

ｍW/℃ mW at 25℃ ℃

102AT-11 1.00kΩ ±1% 3100K±1%

202AT-11 2.00kΩ ±1% 3182K±1%

502AT-11 5.00kΩ ±1% 3324K±1%

103AT-11 10.0kΩ ±1% 3435K±1%

203AT-11 20.0kΩ ±1% 4013K±1%

approx. 2.6 約75 13

−50～+90

−50～+105

Type R25 B25/85

Thermal time

constant s※１

Dissipationfactor


Temp. range ※3

ｍW/℃ mW at 25℃ ℃

10.0kΩ ±1% 3435K±1％ approx. 3.0 approx. 80 15 -30～+105

R25 B25/85

Thermal time

constant s※１



◆Dissipation factor: approx. 3.0mW/℃ ◆Dielectric strength voltage: AC2400V 1 sec.

◆Thermal time constant: approx. 80 sec. ◆Insulation Resistance: DC500V 100MΩ+

Dissipationfactor


Temp. range ※3

ｍW/℃ mW at 25℃ ℃10.0kΩ ±1% 3435K±1％ approx. 0.7 approx. 5 3.5 -30～+105

R25 B25/85

Thermal timeconstant

s※１



Unit: mm

Unit: mm

Unit: mm

Unit: mm

Unit: mm

※1: measured in still air ※2: measured in stirred water ※3: without connector

Ⓔ

0.3 SQ TPE Resin Wire Solder

Type Mark Brand

Terminal

Tin Plating

Resin Form(UL94HB)

Shrink Tube PVC

Lead-free Solder Lead-free Solder

Shrink Tube PVC Resin Form(UL94HB) Lead-free Solder

Connecting Terminal (Copper-

Alloy), Solder (Inside)

Dissipation

Factor

Max.

Power

Dissipation

□0.5 tin plated 42 alloy

Standard Assembly Products Ⓕ EF1M493G2-ASSY-1

EP1C212C0-ASSY-3

ED5F103A2-ASSY-4

Ⓖ

Ⓗ

Ⓘ 104AT-4-ASSY-5

※1: measured in still air ※2: measured in stirred water ※3: without connector 15

No L Connector

1 185±5 XAP-02V(blue)

2 290±10 XAP-02V(white)

Dissipationfactor


Temp. range

ｍW/℃ mW at 25℃ ℃10.0kΩ ±1% 3435K±1％ approx. 4.0 approx. 2 20 -30～+80

B25/85

Thermal time

constant s※２R25

Unit: mm







Dissipationfactor


Temp. range ※3

ｍW/℃ mW at 25℃ ℃3.3kΩ ±2.5% 3970K±2％約2.2 約78 11 -20～+180

R100 B0/100

Thermal time

constant s※１

Dissipationfactor


Temp. range ※3


R35 B0/25

Thermal time

constant s※２



Dissipationfactor


Temp. range


R25 B25/85

Thermal time

constant s※１

Unit: mm

Unit: mm

Unit: mm

EF1M493G2-ASSY-2

Thermistor

Epoxy

Brass Bracket

PVC Tube (<105°C)

Silicon Glass Mesh Tube

Fluorine Wire

Connector

Heat Resistant

PVC Wire (Red)

Epoxy

Deoxidized Phosphor

Copper Pipe

Heat Resistant PVC (0.14sq, black)

Solder

Chip Silicone Varnish

Inside

Epoxy Leads

Chip Solder

Inside

approx. approx.

2015.1.05

Thank you for considering Semitec. Please observe the following precautions when using

our products:

1) Buyer shall always consult Semitec Sales when considering Semitec products for applications not listed herein or for high reliability applications listed below

that could potentially harm human life or property. Buyer shall also consider implementing fail-safe mechanisms at all times.

○Medical Equipment ○Transportation Equipment (Automotive, Railroad, Shipping, etc.) ○Aerospace Equipment ○Traffic Equipment ○Security

Equipment (Crime and Disaster Prevention) ○ Nuclear-related Equipment ○Military Equipment ○Undersea Equipment ○Safety Device ○Other

equipment also requiring equally high reliability

2) Buyer shall not use products outside the defined specification limits or storage conditions, as reliability may be compromised.

3) Buyer shall take precautions against any improper use of products that could result in heat generation, ignition, explosion, scattering, etc.

4) Some products may have sharp protrusions or edges due to their structure. Workers must, therefore, be adequately trained in handling products to prevent

any

related accidents.

5) Processing products may be accompanied by destruction, scattering, etc. of parts. Workers must, therefore, be adequately trained and be well versed in

product

material and various work conditions, to prevent any related accidents.

6) When handling products, Buyer shall take precautions not to apply tension, pressure or heat that exceeds the recommended specifications, as such stress

may cause

open or short circuits, or insulation failures that accelerate deterioration or impair intended performance of the products.

7) Buyer shall always consult Semitec Sales on any uncertainties regarding application, product usage or items not mentioned herein, to avoid improper use of

products.

8) Buyer shall take necessary measures to prevent any damages due to accidents resulting from product failure or malfunction.

9) Semitec assumes no liability or responsibility for any accidents resulting from Buyer’s failure to follow the product usage guidelines mentioned above.

10） Buyer shall always consult Semitec Sales when considering an application outside of a product’s intended use. A separate, individual agreements can be

concluded if necessary, upon confirming application reliability.

Caution

■Head Office : 7-7,Kinshi 1-chome,Sumida-ku,Tokyo 130-8512,Japan

Overseas Sales Section : TEL :+81-3-3621-2704 E-mail: [email protected]

■USA : SEMITEC USA CORP. :TEL:+1-310-540-2330 FAX:+1-310-540-2331 E-mail: [email protected]

■HONG KONG : SEMITEC (H.K.) CO.,LTD. : TEL:+852-2369-6773 FAX:+852-2739-2396 E-mail: [email protected]

■TAIWAN : SEMITEC TAIWAN CORP. : TEL:+886-2-2593-6622 FAX:+886-2-2593-0089 E-mail: [email protected]

■KOREA : SEMITEC KOREA CO.,LTD. : TEL:+82-2-3281-1155 FAX:+82-2-3281-3338 E-mail: [email protected]

■SHANGHAI : SEMITEC SHANGHAI OFFICE : TEL:+86-21-5308-6000 FAX:+86-21-5830-5008 E-mail: [email protected]

CUSTOM THERMISTOR SENSOR

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