NTC Thermistors Descriptions In many industrial sectors and fields of research, temperature is one of the most important parameters which decides about product quality, security, and reliability. Temperature sensors are manufacturered by variable technologies, according to the field of application. NTC(Negative Temperature Coefficient) Thermistors are manufactured from sintered metal oxides. Each thermistor consists of a combination of two to four of the following materials: Manganese, Nickel, Cobalt and Copper. NTC thermistors are semiconductor resistors that exhibit decreasing resistance characteristics with increasing temperature. Temco thermistors have low thermal time constants which result in extremely high rates of resistance change to accurately track the temperature. Typical Features: - Quick response to temperature change - Small dimensions - High stability over a long life - Resistant against vibration and temperature shocks - Resistant to corrosive atmospheres and harsh environments - simple interchangeability - high reliability Applications: - Temperature measurement control - Automotive systems - Industrial process control RTS-Raw 10K NTC Thermistor Specifications: Rated Resisitance: R25=10.00KΩ±1% B-Value: B25/50=3950Ω±1% OperatingTemperature: -30 ~ +80 C Dimensions (mm): 1: TC39B103F 2: Epoxide Resin, Clear 3: Ø0.5mm Tinned Copper Wire - 1 -
RTS-Bead-4: Thermistor bead, 4 (10cm) lead, 10mm wire trimmed and tinned, 0.2DegC accuracy Specifications: Zero Power Resistance: R25=10.00kΩ ±1% B-Value: B25/50=3950K ±1% Operating Temperature Range: -30 ~ +80 C Insulated Resistance: 500VDC in water, >100M Ω Breakdown Voltage: 1500VAC in water, 1 minute. No flash over (Leak Current: 1mA Max). Dimensions (mm): 1: TC39B103F 2: EPOXY RESIN 3: UL2468 26/2CAWG 105 C Black Wire TS-10K-0.6SSP-7 Temperature Sensor: 0.6 SS probe temp sensor, 10K thermistor, type 2 Specifications: Nominal Resistance: R25=10.00kΩ±1% B Value: B25/50=3950K±1% Operating Temperature Range: -30 ~ +80 C Insulated Resistance: 500VDC in water, >100MΩ Breakdown Voltage: 1500VAC, 1min. Dimensions (mm): 1: TC39B103F 2: Ø5x15 Stainless Steel 3: UL2468 26/2CAWG 105 C Black Wire - 2 -
WTS-1-12-7: 25mm(1 ) 304 stainless steel probe, 300mm(12 ) long 22ga standard cable, 10K, type 2 Specifications: Nominal Resistance: R25=10.00kΩ±1% B Value: B25/50=3950K±1% Operating Temperature Range: 30 ~ +105 C Insulated Resistance: 500VDC in water, >100MΩ Breakdown Voltage: 1500VAC, 1min. Dimensions (mm): 1: TC39B103F 2: Ø6x25 Stainless Steel 3: Epoxide Resin 4: UL2651 22AWG/2C 105 C Black Wire OAT3000 Temperature Sensor Specifications: Nominal Resistance: R25=10.00kΩ±1% B Value: B25/50=3950K±1% Operating Temperature Range: 0 ~ +50 C Insulated Resistance: 500VDC in water, >100MΩ Breakdown Voltage: 1500VAC, 1min. Dimensions (mm): 1: TC39B103F 2: Ø6 83mm Stainless Steel Enclosure 3: AVVR 2 0.2mm 2, 105 C black tube 4: Ø4.5mm Black,125 C, Heat-shrink tube - 3 -
Duct Sensor Applications The duct sensor is used to measure the supply and return air temperature in HVAC systems. There are several sensor element ranges to choose from, which guarantee compatibility with all popular DDC systems. The sensor elements are precision thermistors or platinum RTDs. Field calibration is not generally required. The probe is epoxy sealed to prevent moisture from migrating into the probe. The standard probe length is 12 inch. Custom probe lengths, wire types and sensor elements are available for large OEM projects. Ask about our plastic & metal manufacturing capabilities for custom housings as well. Plastic Water Resistant Box: Plastic Box for 1/2 EMT Connection: Electrical Box: Features Sensor Property Specification Thermistor Accuracy +/- 0.2 C Platinum RTD Accuracy +/- 0.4 C Thermistor Range -70 C to 150 C Platinum RTD Range -200 C to 300 C Probe Material Stainless Steel Cable Properties FT4, 80 C, 600V - 4 -
Construction The sensor is a high quality unit manufactured to industrial standards. The probe is made from stainless steel with a welded and ground tip, not a separate welded plug as some other probes in the HVAC industry. The probe is baked and then epoxy sealed to eliminate long term moisture problems. Installation Insert the probe well into the air stream in an area with no stratification or local thermal effects. A supply air sensor is located at any convenient location two or three meters down stream from the nearest fan and coil. A return air sensor can be mounted anywhere in the return duct, one meter or two before the mixing section usually. To install the sensor, drill a 3/4 hole in the duct and insert the probe into the airstream. Secure the electrical box to the duct with two sheet metal screws. The knockouts on the electrical box accept a 1/2 pipe or flex connector. The sensor requires two conductors, normally 18ga unshielded twisted pair. Dimensions (mm) Ordering Information - 5 -
RTS Room Temperature Sensor Descriptions The sensor provides precision room temperature sensing for Energy Management Control Systems. There are several RTD and thermistor models in several ranges for compatibility with all popular DDC systems. Low drift and long term accuracy is assured, field calibration is not generally required. The enclosure design allows for use in areas where appearance is important. The sensors saves I/O space on the DDC controller by connecting to a single input. User button activity is captured in the DDC system application programs as high and low going pulses, providing full software control of the button actions. Features Sensor Property Specification Thermistor Accuracy +/- 0.2 C Platinum RTD Accuracy +/- 0.4 C Thermistor Range -70 C to 150 C Platinum RTD Range -200 C to 300 C Calibration The RTS uses precision thermistors, so calibration is optional. The sensor routes the thermistor signal directly to the DDC controller, and also to an on board 8 bit A/D converter for local display of the temperature. This A/D converter and associated circuitry can be calibrated by adjusting a potentiometer on the sensor. The potentiometer affects only the local display, not the thermistor signal at the DDC controller. Installation The unit is located on an interior wall, away from windows, supply ducts and heat sources. The enclosure can be mounted flush on the wall, or on an electrical box. The backplate has holes for North American and European style electrical boxes. The RTS requires two conductors. The removable terminal block on the back of the RTS can accept wires up to 18 gauge, while the RTS requires butt connectors. Two allen key screws on the bottom of the enclosure backplate are screwed inwards to allow the cover to be removed and outwards to hold the cover in place. - 6 -
RTS3 Flush Mount Room Temperature Sensor Descriptions This sensor provides precision room temperature sensing for Energy Management Control Systems, compatible with all the leading controls systems. It is a 10K Thermistor and can be used with many popular brands of DDC manufacturers. Low drift and long term accuracy is assured, field calibration is not generally required. The sensor saves I/O space on the DDC controller by connecting to a single input. User button activity is captured in the DDC system application programs as high and low going pulses, providing full software control of the button actions. Dimensions Installation The enclosure design allows for use in areas where appearance is important. This Flush Mount temperature sensor can be screwed directly into the dry wall and painted over to become almost invisible to the occupant. - 7 -
DTS-FL Temperature Sensor Descriptions This sensor is used to measure duct supply and return temperatures in HVAC systems. The flange mount design makes it easy to install the sensor in tight quarters. There are several RTD and thermistor models in several ranges for compatibility with all popular DDC systems. The standard probe length is 9in with plenum rated cable of 10ft (3m). Low drift and long term accuracy is assured, field calibration is not generally required. Specifications Sensor Property Specification Thermistor Accuracy +/-0.2 C Platinum RTD Accuracy +/-0.4 C Thermistor range -70 C to 150 C Platinum RTD range -200 C to 300 C Probe Material Stainless Steel Cable Properties FT6, ULC S102.4 80 C, 600V Construction The sensor is a high quality unit manufactured to industrial standards. The probe is made from 314 stainless steel with a welded and ground tip, not a separate welded plug as some probes in the HVAC industry. The probe is baked and then epoxy sealed to eliminate long term moisture problems.the flange accepts two #6 screws, and is made from 314 stainless steel as well. Installation Duct probes should be installed directly on the duct, in an area where the airsteam is well mixed: Locate a supply air sensor two or three meters down stream from the nearest fan-coil. A return temperature sensor can be mounted anywhere in the return duct, after the return fan if there is one. To install the sensor, drill a 3/4 hole in the duct and insert the probe into the airstream. Secure the metal flange to the duct with two sheet metal screws. The plenum rated cable is secured to the duct to the nearest electrical box. The sensor requires two conductors, normally 18ga unshielded twisted pair. Ordering Information - 8 -
OAT Outside Air Temperature Sensor Descriptions This sensor is used to measure the outside air temperature to allow the DDC system to coordinate the mechanical systems with actual building load conditions, enabling such strategies as free cooling, optimum start / stop, and supply temperature reset. The housing is made from PVC electrical fittings which shield the probe from direct sunlight. There are several RTD and thermistor models in several ranges for compatibility with all popular DDC systems. Low drift and long term accuracy is assured, field calibration is not generally required. Specifications Sensor Property Specification Thermistor Accuracy +/-0.2 C Platinum RTD Accuracy +/-0.4 C Thermistor Range -70 C to 150 C Platinum RTD Range -200 C to 300 C Probe Material Stainless Steel Cable Properties FT4, 80 C, 600V Construction The sensor is a high quality unit manufactured to industrial standards. The probe is made from 314 stainless steel with a welded and ground tip, not a separate welded plug as some probes in the HVAC industry. The probe is baked and then epoxy sealed to eliminate long term moisture problems. The sensor housing is a PVC electrical enclosure which is UL approved for outdoor use. The housing extends over the probe to protect from sunlight radiation. The sensor lead extends 12 from the enclosure, making it long enough to reach a junction box and terminate inside the building. Installation The OAT sensor can be mounted on the outside of the building using the following guidelines: Choose a spot on the north face which will be out of sunlight for as much of the day as possible. Mount the sensor where it can be serviced, staying away from exhaust ducts. Point the probe downwards to avoid catching rain. To install the sensor, drill a 3/4 (20mm) hole through the wall, and pipe the sensor to an electrical junction box on the inside of the wall. The sensor has a female 1/2 NPT threaded fitting to accept a short length of 1/2 pipe or PVC. The sensor requires two conductors, normally 18ga unshielded twisted pair. - 9 -
RTS1 Room Temperature Sensor Descriptions The RTS1 Room Temperature Sensor is designed for use with building automationsystems in commercial buildin gs,hospitals,museums or other facilities requiring accurate measurement of relative temperature. Each transmitter utilizes a capacitive polymer sensor to provide excellent linearity and sensitivity. In addition the model RTS1 is available with a built-in thermistor which can be used to measure both room temperature and relative temperature. This unit can be directly mounted to a drywall partition, or vertically to a 2 x 4 electrical handy box using the optional adaptor plate(rhs PLATE). Specifications Supply Voltage... 10 to 15 VDC Input Power... 5.5 ma Output Range... 0 to 100% RH Sensing Accuracy... +/-3% over 10% to 90%RH Output Signal... 0 to 5 VDC R Load... 1000 ohm Max. Operating Temperatuer Range...4 to 49 C Housing Wire Size...14 to 22Awg (Recommended) Thermistor (RTS1 Only)...10k ohms at 25 C Dimensions...2.0 H x 2.0 W x 0.2 D Weight...1.5 Oz Adaptor Plate Dimensions...4.5 L x 2.75 W - 10 -
WTS Water Temperature Sensor Descriptions This sensor is used to measure water temperature of heated or chilled water and other liquids in mechanical systems. It includes a brass well which allows the probe to be removed from the pipe without draining the system and protects the probe. There are several RTD and thermistor models in several ranges for compatibility with all popular DDC systems. Low drift and long term accuracy is assured, field calibration is not generally required. WTS-MO: WTS-WP: WTS-M1: WTS-P: Wells: Specifications Sensor Property Specification Thermistor Accuracy +/-0.2 C Platinum RTD Accuracy +/-0.6 C Thermistor Range -70 C to 150 C Platinum RTD Range -200 C to 300 C Probe Material Stainless Steel Cable Properties FT4, 80 C, 600V Construction The probe is made from stainless steel with a welded and ground tip, not a separate welded plug as some probes in the HVAC industry. The probe is baked and then epoxy sealed to eliminate long term moisture problems. The probe is spring loaded to ensure thermal contact with the bottom of the well. The well is made from machined brass, and fits a standard 1/2 NPT fitting. The sensor housing is a galvanized electrical box. Installation Locate water temperature sensor at least a few pipe diameters downstream any heat or cooling source: A 1/2 NPT female pipe fitting is welded into the pipe. These fittings are usually supplied and installed by the piping trade under direction of the controls trade. Choose an orientation where any condensation will not collect, such as the top of a horizontal pipe section or at a 45deg angle from horizon. Before threading the sensor into the well, deposit some thermal paste in the bottom of the well to improve heat conduction between the metal parts. The sensor is wired with two conductors, normally 18ga unshielded twisted pair. - 11 -
Dimensions 2 Well 4 Well - 12 -
6 Well 8 Well Probes: - 13 -
1/2 NPT Stainless Steel Flange: - 14 -
WTS5 Water Temperature Sensor Descriptions This sensor is used to measure water temperature of heated or chilled water and other liquids found in the various mechanical systems of a building. It is especially intended for strapping to the outside of a pipe when there is no oppportunity to install a well such as in a retro-fit or additions to an existing system. The strap on probe is also useful in applications such as monitoring batteries, transformers, generators, and generally any place where a complete assembly cannot be mounted. Ice rink slabs and soil temperature are other applications. There are several RTD and thermistor models in several ranges for compatibility with all popular DDC systems. Low drift and long term accuracy is assured, field calibration is not generally required. Specifications Sensor Property Specification Thermistor Accuracy +/-0.2 C Platinum RTD Accuracy +/-0.6 C Thermistor Range -70 C to 150 C Platinum RTD Range -200 C to 300 C Probe Material Stainless Steel Cable Properties FT4, 80 C, 600V Construction The probe is made from 314 stainless steel with a welded and ground tip, baked and then epoxy sealed to eliminate long term moisture problems. The cable is 12 inch long and fire rated to FT4, 80 C with 600V isolation. A nickel coated spring provides strain relief for the cable. The sensor housing is a galvanized electrical box which is sturdy and easy to mount. Installation For measuring water temperature, the probe is strapped with plastic tie wraps or a metal strap onto the outside of the pipe and covered with insulation. The electrical box is mounted on a strut bar or on the wall near the pipe. Two conductors are required, 18ga unshielded twitted pair is common. - 15 -
Wells Descriptions These thermowells are designed for mounting temperature sensors in pipes and tanks. The thermowells are designed to reduce the stress encounted in flowing fluid installation which produces a constantly oscillating force that can eventually crack a probe unless it is mounted in one of these wells. The wells are designed to handle this stress yet provide good thermal contact with the fluid. They also provide isolation, if the sensor needs to be serviced the system can remain in operation without having to drain down the lines. Features & Options Three Lengths: 2, 4 and 8 (Fit standard Immersion Unit lengths) Stainless Steel (304 or 316) or Brass Two Part (Welded) or Machined Construction Other Lengths or Materials Available Upon Request Limited Lifetime Warranty 2 Part (Welded) Temco well Standard Temco wells available from Temco include 304 stainless steel (machined), 316 stainless steel (machined), brass (machined), and two part (welded) stainless steel. These wells are offered in 2,4 and 8 lengths with 1/2 NPT external and 1/2 NPSM. Other lengths and thread diameters are available upon request.the Thermowell chosen for the installation is governed mainly by the corrosion conditions the well will face. The machined stainless steel wells all come with a mirror polish to provide maximum corrosion resistance. Occasionally, the material consideration is one of strength rather than corrosion. For example, a machined stainless steel well may be required for high pressure water service where otherwise a brass or two part stainless steel well would be satisfactory from a corrosion standpoint. market requirement. Well failures, in most cases, are not due to the effects of pressure or temperature on the well. The calculations necessary to provide adequate strength, under given conditions, are familiar enough to permit proper choice of wall thickness and material. The values shown in Table 1 are conservative, and intended primarily as a guide. Wells are also safe if the resonant frequency is well below the wake frequency or if the fluid velocity is constantly fluctuating through the critical velocity point. Nevertheless, if the installation is not hampered by the use of a sufficiently stiff well. - 16 -
Dimensions - 17 -
Temperature Curves Part # -> DegC 3K -6 Thermister Type, Ohms / Part Number Suffix 10K Type2-7 10K Type3-24 20K -20 100K -9-40 100,701 335,671 239,700 814,000 4,067,212 843-35 72,658 242,195 187,500 578,600 2,890,843 863-30 53,005 176,683 135,300 415,600 2,077,394 882-25 39,073 130,243 107,105 301,000 1,508,530 902-20 29,092 96,974 78,910 220,600 1,106,485 922-15 21,868 72,895 63,225 163,600 819,378 941-10 16,589 55,298 47,540 122,380 612,366 961-5 12,694 42,314 38,515 92,300 461,683 980 0 9,795 32,650 29,490 70,200 351,017 1,000 5 7,618 25,395 23,460 53,800 269,041 1,020 10 5,971 19,903 18,790 41,560 207,807 1,039 15 4,714 15,714 15,130 32,340 161,702 1,059 20 3,748 12,493 12,260 25,340 126,729 1,078 25 3,000 10,000 10,000 20,000 100,000 1,105 30 2,416 8,056 8,194 15,884 79,428 1,117 35 1,959 6,530 6,752 12,696 63,489 1,136 40 1,597 5,324 5,592 10,210 51,058 1,155 45 1,310 4,366 4,655 8,258 41,301 1,175 50 1,080 3,601 3,893 6,718 33,598 1,194 55 896 2,985 3,327 5,494 27,479 1,205 60 746 2,487 2,760 4,518 22,593 1,232 65 625 2,082 2,375 3,734 18,669 1,244 70 526 1,751 1,990 3,100 15,502 1270.7 75 444 1,480 1,724 2,586 12,932 1,290 80 377 1,256 1,458 2,186 10,837 1308.9 85 321 1,070 1,271 1,824 9,121 1,328 90 275 916 1,084 1,542 7,709 1,347 95 236 787 950 1,308 6,542 1,366 100 204 679 817 1,114 5,574 1385 105 176 587 720 953 4,767 1,404 110 153 510 624 818 4,093 1422.9 115 133 445 553 705 3,525 1,442 120 117 389 481 609 3,046 1,460 1K RTD -12-18 -