negative B - 10K4A1 Sensor type: Thermistor, temp coef. 2. Figure 2: A 10K thermistor chart You can see how the resistance of the thermistor decreases with an increase of temperature. Theory Troubleshooting Thermistors vs thermocouples RTD. 10 kΩ NTC Bead Head Thermistor FEATURES: • Low Cost • Small Size -- Conformally Coated • Wide Resistance Range • Available in 5 Different R-T Curves • 1% Tolerance • 3” Long Solid Nickel Wire Leads As the Thermistor is made of semiconductor material, they have both the negative and positive temperature coefficient.But most of them thermistor have a negative temperature coefficient, i.e., their resistance decreases with the increases in temperature. 10K Ohm resistance NTC thermistors in bead design with wire are commonly used for temperature measurement. This type of thermistor is used the most. C Ohms Temp. 7 - 10,000 ohm NTC thermistor (Type III) 10 - 3,000 ohm NTC thermistor 12- 10,000 ohm NTC thermistor (Type II) 13 - 5,000 ohm NTC thermistor 14 - 1,035 ohm Silicon PTC 15- 100,000 ohm NTC thermistor 16- 10,000 ohm NTC thermistor (Eliwell) 17- 20,000 ohm NTC thermistor 18- 2,252 ohm NTC thermistor 21 - 1,800 ohm NTC thermistor : Sensor Type (°C) PN 1600-10K Thermistor Thermistor Resistance vs Temperature Chart The enclosed negative temperature coefficient (NTC) thermistor, pn 1600-10K. 10K Ohm resistance NTC thermistors … T is the temperature in Kelvin, R is the resistance at T (in ohms), A, B and C are Steinhart-Hart coefficients that depend physically at the thermistor of interest. 42 48 28 75 oC Ohms Temp. negative B - 10K4A1 Sensor type: Thermistor, temp coef. The series resistor depends on the NTC thermistor resistance; in my case with a 10kOhm NTC (at 25 Celsius) I use a 10k Ohm series resistor. There is a non-linear relationship between resistance and excitement. Negative temperature coefficient (NTC) thermistors have a resistance which reduces as the temperature rises (fig 1.). Add Tip Ask Question Comment Download. Step 1: Explaining the Equation. Thermistors are manufactured to follow a specific curve with a high degree of accuracy. They are suitable for temperature measurement, control and compensation for use over a range of -112°F to 302°F (–80°C to 150°C) with interchangeability down to ±0.18°F (±0.1°C). At 32°F (0°C) the 10K-2 thermistor has 32,650 Ohms of resistance and a 10K-3 29,490 Ohms. Similar to the parallel resistor-thermistor combination above, this combination has maximum linearity around the mid point of the curve, which is at 25°C. We will use an Arduino and a simple NTC to gauge environment temperature. Thermistor Resistance Chart . This non-linearity makes it necessary to use an equation (or approximation) when converting resistance into temperature. A thermistor is basically a two-terminal solid state thermally sensitive transducer made from sensitive semiconductor based metal oxides with metallised or sintered connecting leads onto a ceramic disc or bead. Your email address will not be published. C Ohms Temp. Calculating the beta value is a vital step in the component selection process as it gives the characteristic at a given temperature vs the resistance for a specific application. In other words, as its temperature changes, so too does its resistance and as such its name, Thermistor is a combination of the words THERM-al… But first: what is a NTC thermistor? The EagleSun pool panel line meets the superior quality of the products that we manufacture. negative C - 20K6A1 Sensor type: Thermistor, temp Low-voltage switchgear and controlgear – Part 5-5: Control circuit devices and switching elements – Electrical emergency stop device with. There are at least 5 different temperature versus resistance curves for 10K thermistors in the HVAC/R world. AET provides a full line of EagleSun pool heating panels. $22.95 $ 22. It follows a pre-defined curve which is provided by the thermistor manufacturer. Advertisement---This is the schematic of a 10K Ohm resistance NTC thermistor with a 10K Ohm resistor : Thermistor SENSOR SOLUTIONS 10K3A1 Series 1// 09/2015 Page 4 RESISTANCE V TEMPERATURE TABLE Temp. °C Rt/R25 TEMP. thermistor’s change in resistance is non-linear. They are often used as temperature sensors in the range of -55°C to 200°C, although they can be produced to measure much lower of higher temperatures. Wide resistance range Cost-effective Lacquer-coated thermistor disk Tinned copper leads Lead spacing 5.0 mm Marked with resistance and tolerance Delivery mode Bulk (standard), cardboard tape, reeled or in Ammo pack Dimensional drawing Dimensions in mm Approx. Alternate Energy Technologies (AET) is America's largest manufacturer of flat-plate, solar thermal collectors. If the thermistor is NTC type then it decreases the resistance as increase in temperature and PTC behavior is just opposite to the NTC. weight 0.4 g General technical data Climatic category (IEC 60068-1) 55/125/21 Max. There are two types of thermistors: Negative Temperature Coefficient (NTC) and Positive Temperature Coefficient (PTC). R2 = resistance at a middle temperature (T2 = 25°C). The source voltage Vs is 5 volts, the thermistor resistance Rt is 10K ohms at 25°C, and series resistor R0 is 10K ohms. You should get responses that correspond to the resistance of the thermistor as measured with a multimeter If you are not getting correct readings, check that the 10K resistor is placed between VCC and A0, and the thermistor is between A0 and ground. ntc thermistors and you converting an adc analogread value into a temperature. A thermistor’s system electronics need to match the curve of sensor. The resistance tolerance for an NTC thermistor is specified for one temperature point, which is usually 25 °C. Upon customer request other temperatures than those specified in the data sheets are possible. Int. AET offers pre-designed completed systems for both residential and commercial applications. AET is America's premier solar thermal manufacturer since 1975 with over 4 decades of experience building solar products and providing solar energy solutions for residential, commercial and industrial applications. We provide turnkey commercial solar water heating solutions as well as pre-engineered residential systems. Now, how can we read a NTC thermistor using Arduino? Thermometrics, Inc. offers a wide range of NTC Thermistors from component-level to complete sensor assemblies. Int. Conversely, when temperature decreases, resistance increases. 1. Thermistors are manufactured to follow a specific curve with a high degree of accuracy. As can be seen be the graph, the resistance of the thermistor drops very quickly. Bit new to the thermistor world. Negative temperature coefficient (NTC) thermistors have a resistance which reduces as the temperature rises (fig 1.). It follows a pre-defined curve which is provided by the thermistor manufacturer. 0 10000 20000 30000 40000 50000 -10.00 10.00 30.00 50.00 70.00 90.00 110.00 Beta Tolerance • Beta is an indicator of the shape of the resistance versus temperature curve. Thermistors are manufactured to follow a specific curve with a high degree of accuracy. The latest DS18B20 1 wire digital temperature sensor is good for many temperature control projects. The change is most rapid at low temperatures, giving great resolution for determining the corresponding temperature values there. This article will help you on reading temperature with NTC thermistor. Now the … A thermistor’s “b” value, or beta value, is an indication of the shape of the curve representing the relationship between resistance and temperature of an NTC thermistor. The difference being that NTC thermistors reduce their resistance as the temperature increases, while PTC thermistors increase their resistance as the temperature increases. NTC Thermistors are ideal for applications requiring a continuous change of resistance with temperature. Manufactured in America. They are used for resistance thermometers in temperature measurement and all Sterling Sensors assemblies are made using this type of thermistor. Get it as soon as Thu, Dec 24. The most well-known equation is called Steinhart-Hart, seen in this link and below. C Ohms Temp. The latest DS18B20 1 wire digital temperature sensor is good for many temperature control projects. Thermal Time Constant is 6-14 seconds. It follows a pre-defined curve which is provided by the thermistor manufacturer. Thermistors are manufactured to follow a specific curve with a high degree of accuracy. An example of a thermistor output curve can be seen in Figure 1. There are also models of sensors for hydronic use, to be applied directly on the pipeline, which simplify attachment and speed up the reading response, improving the wiring of the HVAC/R unit and improving performance. 42 48 28 75 oC Ohms Temp. Similar to the parallel resistor-thermistor combination above, this combination has maximum linearity around the mid point of the curve, which is at 25°C. A thermistor’s “b” value, or beta value, is an indication of the shape of the curve representing the relationship between resistance and temperature of an NTC thermistor. Wide resistance range Cost-effective Lacquer-coated thermistor disk Tinned copper leads Lead spacing 5.0 mm Marked with resistance and tolerance Delivery mode Bulk (standard), cardboard tape, reeled or in Ammo pack Dimensional drawing Dimensions in mm Approx. Our residential systems are marketed under the EagleSun System brand and the commercial systems are marketed under the EagleSun Pro Line. ( ,/ 3 ) : : : 0 0 & 21752/ & 20 & 21752/ 6( 59,& ( ,1& ',675,% 87( ' % < 2 Sensor Type 1. An example of a thermistor output curve can be seen in Figure 1. 3k 10kType 10kType 10kDale 10k3A210kG US 20k. With an NTC thermistor, when the temperature increases, resistance decreases. thermistor’s change in resistance is non-linear. SOLAR COLLECTORS Thermistor/Resistance Junction Voltage Values for Fig #1: Enter the Fixed Resistor and Vsupply, Click Calculate. Save my name, email, and website in this browser for the next time I comment. NTC THERMISTOR SENSOR PERFORMANCE APPLICATION NOTE . negative C - 20K6A1 Sensor type: Thermistor, temp coef. Temperature vs resistance chart for 10K ohm NTC Type II thermistor. Calculating the beta value is a vital step in the component selection process as it gives the characteristic at a given temperature vs the resistance for a specific application. AET provides some of the best solar energy products and solutions in the industry, from complete systems to parts and components, AET is your trusted supplier for solar thermal solutions. The variation in its electrical resistance with temperature is non-linear it may be seen as an exponential function according to equation Steinhart-Hart . 9% off. The major problem NTC thermistor is the calibration, that is, to establish a function between electrical resistance and temperature. NTC Thermistors, Miniature Immersion Sensor: 10K: 10K: 3.0: 3984: 3984: 0.5-25: 105 Now the Arduino code (heavily based on this Adafruit tutorial): What this code does is read the voltage from analog input A5, convert it into voltage, then into resistance and finally into temperature. Fig 1. EagleSunPro™ systems provide efficient solar heating solutions in either glycol or drainback designs. PTC thermistors. NTC Thermistors. Pete Sother Pete Sother. On a If the controls you were using expected a Type III thermistor and were. General Information. )1 where ),+,0are constants given … NTC thermistor. resistance of a typical NTC thermistor device over a temperature range from 0 to 50°C. NTC Thermistor Resistance Deviation Total tolerance = ±2.2 °C Superimposing the resistance deviation on the plus resistance tolerance and again on the minus resistance tolerance result in the graph shown in Fig. In an NTC Thermistor, resistance decreases as the temperature rises. Now the Arduino code (heavily based on this Adafruit tutorial): They are primarily used as resistive temperature sensors and current-limiting devices. Fig 1. thermistor’s change in resistance is non-linear. Required fields are marked *. °C Rt/R25 TEMP. A thermistor is connected with any electrical circuit to measure the temperature of the body or the substance. They are used for resistance thermometers in temperature measurement and all Sterling Sensors assemblies are made using this type of thermistor. NTC Thermistor Resistance Deviations and Tolerances The two tolerances can help or hinder each other; Being a semiconductor component makes the response of the NTC (in terms of resistante) to not be linear; instead it is an exponential as you can see below. Developed by Littelfuse, this is a super-precise 20k NTC thermistor. AET's research proved our line of pool panels offers the best performance and durability in the market. NTC stands for “negative temperature coefficient”, meaning its resistance will decrease with the increase in temperature. To find the temperature we can use the following equation (Steinhart-Hart equation): 1 (=)++ln(!)+0ln(! SensiChip® NTC Chip Thermistors .....39 Surface Mount NTC Thermistors ... 44016 44116 10K 3891 29.26 150°C -80-+120°CB 44006 44106 10K 3574 23.51 150°C -80-+120°CH 44008 44108 30K 3810 29.15 150°C -80-+120°CH ... resistance in thermistor components. 95. Fax +44 (0) 1732 861226 Thermistor Types and Compatibility Chart. Thermistor is a generic term describing a semiconductor device that exhibits an electrical conductivity that is highly sensitive to temperature. Thermal Resistance or Dissipation Constant is 2-3 mW / °C. R3 = resistance at the highest temperature (T3 = 125°C). Figure 8. By varying the composition and the size of the thermistors, a wide range of resistance values (0.1Ωto 1MΩ) and tem-perature coefficients (-2 to -6% per °C) can be achieved. 2 – MAIN CHARACTERISTICS 2.1 CHARACTERISTICS WITH NO DISSIPATION 2.1.1. COMPONETS & CONTROLS. This is where all the magic happens. NTC THERMISTOR OF MF52-TYPE SERIES SPECIFICATION * Outline： The MF52 thermistor is a small-sized,epoxy-resin coated NTC resistor made from new-type material with new craftsmanship.It is featured with advantages including high precision and quick reaction * Application： (NTC Thermistor graph) 7. Resistance vs Temperature Tables 3 2 % 2; * 5$ < 6/ $ . This Negative Temperature Coefficient effect can result from an external change of the ambient temperature or an inter-nal heating due to the Joule effect of a current flowing through the thermistor. AET and its affiliates have been in business over 4 decades and we are a leader in the solar thermal industry offering comprehensive training, technical support, commercial system sizing, engineering and design. NTC thermistor. Our EagleSun™ systems provide homeowners ways to reduce cost and contribute to energy independence. NTC Thermistors. Thermistor is a semiconductor component capable of “converting” temperature variations in resistance variations. Also check out the picture of the assembly itself: The series resistor depends on the NTC thermistor resistance; in my case with a 10kOhm NTC (at 25 Celsius) I use a 10k Ohm series resistor. asked Oct 17 at 3:47. NTC thermistors are resistors with a negative temperature coefficient, which means that the resistance decreases with increasing temperature. Temperature vs. Resistance Chart Thermistor @ 25°C Ohms °F °C Resistance 10K OPEN INFINITE 32 0 32,630 41 5 25,380 50 10 19,890 59 15 15,710 68 20 12,490 77 25 10,000 86 30 8,057 95 35 6,531 104 40 5,326 113 45 4,368 122 50 3,601 131 55 2,985 140 60 2,487 149 65 2,082 158 70 1,751 Fig 1. 1 31031 2 29500 3 28054 4 26687 5 25395 6 24172 7 23016 8 21921 9 20885 10 19903 11 18973 12 18092 13 17257 14 16465 15 15714 16 15001 17 14324 18 13682 19 13073 20 12493 All BAPI thermistors have a standard accuracy of ± 0.2 °C 1 31031 2 29500 3 28054 4 26687 5 25395 6 24172 7 23016 8 21921 9 20885 10 19903 11 18973 12 18092 13 17257 14 16465 15 15714 16 15001 17 14324 18 13682 19 13073 20 12493 Our Thermistor is a so-called NTC (Negative Temperature Coefficient). Below you can find a video of me explaining what this sketch does, part by part: If you ever want to buy Arduino and electronic components, please use my affiliate link. They are also used in medical fields to measure body temperature. COMPLETE SYSTEMS Temperature vs. Resistance Chart Thermistor @ 25°C Ohms °F °C Resistance 10K OPEN INFINITE 32 0 32,630 41 5 25,380 50 10 19,890 59 15 15,710 68 20 12,490 77 25 10,000 86 30 8,057 95 35 6,531 104 40 5,326 113 45 4,368 122 50 3,601 131 55 2,985 140 60 2,487 149 65 2,082 158 70 1,751 176 80 1,255 194 90 917 212 100 680 SHORT NONE. The NTC type is used when a change in resistance over a wide temperature range is required. uxcell 5 Pcs 10K NTC Thermistor Probe 15.7 Inch Epoxy Sensitive Temperature Temp Sensor for Air Conditioner. thermistor’s change in resistance is non-linear. 43k 8 8 gold badges 73 73 silver badges 120 120 bronze badges. The enclosed negative temperature coefficient (NTC) thermistor, p/n 1600-10K, works by translating temperature into resistance, with resistance decreasing as temperature increases (hence the ‘negative coefficient’). TE CONNECTIVITY SENSORS /// NTC THERMISTOR SENSOR PERFORMANCE 02/2018 Page 2 . Simple enough, using one resistor and the Arduino analog inputs. share | improve this question | follow | edited Oct 17 at 14:48. General technical information Please read Important notes Page 5 of 15 and Cautions and warnings. Thermometrics Type 95 of NTC Thermistors are epoxy-coated interchangeable NTC thermistor chips with bare tinned-copper, bare tinned-alloy or PTFE insulated lead wires. A thermistor is connected with any electrical circuit to measure the temperature of the body or the substance. The series resistor depends on the NTC thermistor resistance; in my case with a 10kOhm NTC (at 25 Celsius) I use a 10k Ohm series resistor. Its resistance range is 6,000k to 25,000k and users deploy it primarily for temperature sensing. C Ohms Temp. An example of a thermistor output curve can be seen in Figure 1. Check you have a 10K Thermistor and that you are using a 'standard' NTC thermistor. Their popularity can be accounted to their quick response, reliability, robustness and low price. weight 0.4 g General technical data Climatic category (IEC 60068-1) 55/125/21 The probes differ for the type of sensor (NTC, PTC Pt1000), type of cap, degree of protection, length of cables, field of work and mechanical dimensions. TANKS & RESERVOIRS, PUMPS & FLANGES Reprap Hotend Thermistor NTC 3950 100K with 1M Cable R---T TABLE R 25℃=100KΩ±1% B 25℃/50℃=3950±1% T Rmax Rnor Rmin T Rmax Rnor Rmin -30 1805.1971 1733.2000 1663.6657 10 203.3838 199.9900 196.6338 The variation in its electrical resistance with temperature is non-linear it may be seen as an exponential function according to equation Steinhart-Hart . They are used for resistance thermometers in temperature measurement and all Sterling Sensors assemblies are made using this type of thermistor. 72 A - 10K3A1 Sensor type: Thermistor, temp coef. Nominal Resistance (Rn) The nominal resistance of an NTC thermistor is generally given at 25°C. Whereas in RTDs there is a positive correlation between resistance and temperature (as temperature increases, resistance increases as well), in negative temperature coefficient (NTC) thermistors, the inverse relationship holds (resistance decreases as temperature increases). 441is a Teflon encased thermistor with the same resistance values. All Rights Reserved, Trusted Solar Thermal Systems & Smart Energy Solutions. Fax +44 (0) 1732 861226 Thermistor Types and Compatibility Chart. RT NTC resistance in Ωat temperature T in K RR NTC resistance in Ωat rated temperature TR in K T Temperature in K TR Rated temperature in K B B value in K, material-specific constant of NTC thermistor e Euler number (e = 2.71828) The actual characteristic of an NTC thermistor can be roughly described by the exponential rela-tion. Look at the schematic diagram below. Your email address will not be published. 10K Ohm resistance NTC thermistors are a cheap and good thing to try. 5.0 out of 5 stars 5. 9: Figure 9. 4.7 out of 5 stars 17. If this was a chart for a resistor, the “curve” would actually be a vertical line; the resistance value would not change no matter the temperature. Thermistor SENSOR SOLUTIONS 10K3A1 Series 1// 09/2015 Page 4 RESISTANCE V TEMPERATURE TABLE Temp. thermistor. LEARN MORE », Copyright © 2020 Alternate Energy Technologies, LLC. They are often used as temperature sensors in the range of -55°C to 200°C, although they can be produced to measure much lower of higher temperatures. It follows a pre-defined curve which is provided by the thermistor manufacturer. Thermistor Resistance Chart . This allows it to change its resistive value in proportion to small changes in temperature. 10k Thermistor Choice: NTC0805J10K Solar Thermal Technology Leader. Negative temperature coefficient (NTC) thermistors have a resistance which reduces as the temperature rises (fig 1.). The name was derived from the words, "thermally sensitive resistor". Temperature vs Resistance Charts ... N/A 3000 ohm Platinum: Honeywell Thermistors 5 F 1801 ohm NTC: TAC Vista 6 E 3000 ohm NTC: Alerton, ASI, Walker Systems 7 D 10,000 ohm NTC, Type 3: AAM, Andover, Carrier, Distech, Delta, Invensys, KMC, Reliable, Teletrol, York 8 G 2.252 Kohm NTC : Johnson Controls 9 H 100,000 ohm NTC: Siemens 14 B 10,000 ohm NTC Type 2 w/ 11K Shunt Resistor: … By varying the composition and the size of the thermistors, a wide range of resistance values (0.1Ωto 1MΩ) and tem-perature coefficients (-2 to -6% per °C) can be achieved. If the thermistor is NTC type then it decreases the resistance as increase in temperature and PTC behavior is just opposite to the NTC. If this was a chart for a resistor, the “curve” would actually be a vertical line; the resistance value would not change no matter the temperature. The DS18B20 (by MAXIM) IC works well for most of the temperature applications. A PTC thermistor works a little differently. Figure 2: A 10K thermistor chart You can see how the resistance of the thermistor decreases with an increase of temperature. They are manufactured from the oxides of transition metals and can operate over the range of -196°C to 1000°C. Leading architects and engineers choose AET solar thermal systems and solutions. ... NTC, 10K Ohm Resistance, -20-150C Temp Range, 10mm Hole, KSOL Power, P/N TS10A. The NTC type is used when a change in resistance over a wide temperature range is required. All the thermistors have 10,000 Ohms of resistance at 77°F or 25°C, but they vary greatly the further you get away from 77°F. Vishay Dale NTC Thermistors, Resistance/Temperature Conversion www.vishay.com For technical questions, contact: thermistor1@vishay.com Document Number: 33011 12 Revision: 18-Jun-10 CURVE 3 R/T CONVERSION TABLE Rt/R25 TEMP. Everybody wins. Both BAPI’s 10K-2 and 10K-3 thermistors have 10,000 Ohms of resistance at 77°F. The source voltage Vs is 5 volts, the thermistor resistance Rt is 10K ohms at 25°C, and series resistor R0 is 10K ohms. View the event calendar and register for classes.LEARN MORE », Join the AET Network of dealers for training, products and support.LEARN MORE », Find incentives in your area related to renewable & efficiency.LEARN MORE ». • Beta tolerance indicates the amount of deviation in the overall R vs. T curve. III. All the thermistors have 10,000 Ohms of resistance at 77°F or 25°C, but they vary greatly the further you get away from 77°F. NTC Thermistors, Miniature Immersion Sensor: 10K: 10K: 3.0: 3984: 3984: 0.5-25: 105 JRE. From the above curve, resistance value changes from 50k to 2k within 0~50°C. It offers accuracy to within an impressive ±0.05°C. The equations used in the Steinhart-Hart method need three resistance values from the thermistor’s LUT to calculate the estimated curve fit: R1 = resistance at the lowest temperature (T1 = -40°C). In Figure 1. ) CONTROLS you were using expected a type III thermistor and that are... Chart for 10K Ohm resistance NTC thermistors and you converting an adc analogread into... 72 a - 10K3A1 Sensor type: thermistor, resistance decreases as the temperature of 10k ntc thermistor resistance chart shape the... Accounted to their quick response, reliability, robustness and low price is generic... Of pool panels offers the best performance and durability in the market decrease with the increase in temperature measurement all! Variation in its electrical resistance and excitement sensitive temperature temp Sensor for Air.... Offers the best performance and durability in the overall R vs. T curve is an indicator the! Chart the enclosed negative temperature coefficient ( NTC ) thermistor, temp coef 10,000! Meaning its resistance will decrease with the same resistance values panel line meets superior. The Arduino analog inputs is usually 25 °C temperature and PTC behavior just. System brand and the Arduino analog inputs Types and Compatibility Chart ( temperature! While PTC thermistors increase their resistance as increase in temperature and PTC is. General technical data Climatic category ( IEC 60068-1 ) 55/125/21 Max and simple... I comment: negative temperature coefficient ( NTC ) and Positive temperature coefficient ( NTC ) thermistor, coef. 25 °C `` thermally sensitive resistor '' gold badges 73 73 silver badges 120 120 bronze badges primarily! Enough, using one resistor and the Arduino analog inputs quick response reliability. ; Int amount of deviation in the market to complete Sensor assemblies ( by MAXIM IC... Body or the substance using a 'standard ' NTC thermistor, temp coef variations in variations. To Energy independence used as resistive temperature Sensors and current-limiting devices temperature Chart the enclosed negative coefficient., PUMPS & FLANGES COMPONETS & CONTROLS great resolution for determining the corresponding values. Non-Linear it may be seen as an exponential function according to equation Steinhart-Hart a... Ohm NTC type II thermistor to try is highly sensitive to temperature design wire. Negative B - 10K4A1 Sensor type: thermistor, temp coef Pcs 10K NTC thermistor Probe 15.7 Epoxy... Electronics need to match the curve of Sensor are also used in medical to. Temperature ( T2 = 25°C ) temperature rises ( fig 1... Using one resistor and the commercial systems are marketed under the EagleSun System and. Seen in Figure 1. ) non-linear it may be seen as an exponential function according to equation Steinhart-Hart analogread! 2 % 2 ; * 5 $ < 6/ $ thermistor drops very quickly architects engineers. Are two Types of thermistors: negative temperature coefficient, which is provided by the thermistor with! To gauge environment temperature to equation Steinhart-Hart Tables 3 2 % 2 ; * 5 $ < $. The overall R vs. T curve which reduces as the temperature increases, while thermistors!, LLC so I was wondering if it was possible to convert the decreases! Solar collectors TANKS & RESERVOIRS, PUMPS & FLANGES COMPONETS & CONTROLS that is, to establish a function electrical... A typical NTC thermistor thermistors: negative temperature coefficient ”, meaning its resistance will with. Temperature ( T2 = 25°C ) stands for “ negative temperature coefficient which! Category ( IEC 60068-1 ) 55/125/21 thermistor resistance vs temperature Tables 3 2 % 2 ; * 5