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PTC Thermistors
- Bead =<4mm
- From 80ºC to 180ºC
PTC (Positive Temperature Coefficient) Thermistors are solid-state temperature sensors that have between their terminals, an increasing ohmic response when the Sensing Head is submitted to increasing temperatures. This response is Highly non-linear, around the product Calibration point.
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Our Advanced Thermal Products Operation provides a broad range of both NTC and PTC components. NTC thermistors are metal oxide semiconductors that decrease in resistance at temperature increases and are normally used as temperature sensing elements in a wide range of applications. NTC thermistors have a well defined resistance versus temperature characteristic and are very sensitive to even the smallest temperature change.
NTC Ceramic Component Features
• Trimable to very close tolerances; better than ±0.1°C over a 70°C temperature span
• Configurations include discs, epoxy coated chips, radial and axial glass encapsulated and others
• Low cost
• Ideal for high volume OEM applications
PTC thermistors are ceramic semiconductors with a switching characteristic; a very steep resistance versus temperature characteristic near their switch temperature. Spectrum Sensors can provide a custom solution to a range of applications at a low cost with an extremely reliable product by adjusting a range of the electrical and mechanical parameters of the ceramic element.
PTC Ceramic Component Features
• Applications include: heating elements to overcurrent protection, liquid level/air flow and many more
• Adjustable characteristics include switch temperature from approximately 50°C to approximately 170°C, R25 and tolerance, voltage rating, mechanical configuration and many more.
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Measurement Specialties’ glass encapsulated thermistor components are ideal for accurate and reliable temperature measurement, control, or calibration applications.
Available in a range of resistance curves and tolerances.
Temperature Sensor - Radial Glass NTC Thermistors Series A
Features:
- 2K to 500K Ohms Resistance @25ºC
- Hermetically Sealed Package
- High Temperature Stability
- Available in ±1%, ±2%, ±3% or ±5% Tolerance @25ºC
- Glass Encapsulation
- Temperature Range -40ºC to +250ºC
- Low Cost
- RoHS Compliant
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Max. Temp: 150°C for Standard Probe
36" Insulated, 26 AWG Stranded Lead Wire
316SS Sheath
1/8, 3/16 and 1/4 " Diameter Sheaths Available
2252 Ohm, 0.2°C Elements Standard, Other 44000 Series Elements Also Available
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The Thermometrics Type MA400 interchangeable temperature probes have been designed to provide high reliability and performance for temperature measuring and controlling instruments. The Series 400 temperature probes are based on our 2252 Ohm interchangeable curve.
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MAIN FEATURES
- Glass Encapsulated for Long Term Stability & Reliability
- High Stability: <0.1°C/Y
- Small Size: ø 0.8mmx1.4mm
- High Resistance Accuracy: 1%
- Quick Response Time: 3s
- Wide Temp. Range: -55°C to 250°C
APPLICATIONS
- Temperature sensing for laser diodes, optical components, etc.
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Thermistors tend to be more accurate than RTD's and thermocouples, but they have a much more limited temperature range because of their marked non-linearity.
A Thermistor capitalizes on the fact that the electrical resistance of a material changes as its temperature changes. Thermistors rely on the resistance change in a ceramic semiconductor, with the resistance dropping non-linearly with a temperature rise.
Thermistors can be a low cost solution to temperature measurement. They tend to have large signal outputs and their small size permits fast response to temperature changes. UE Thermistors are used to measure temperatures from -45° to 260° C (-50° to 500° F)
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- PT100, PT1000, PTC, NTC
- Liquids and gas application
- Brass or St. Steel probe material
- 1/8" to 3/4" male process connection
- Pmax = 50 bar
- Protection class IP65
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General description:
Multi-purpose temperature probe with 2-1/2" (64 mm)-long stainless steel housing.
Use to measure temperature of air, soil, or water. Add up to four probes to a single Leaf & Soil Moisture/Temperature Station. Includes 15' (4.6 m) direct-burial cable.
Compatible with both original Vantage Pro and Vantage Pro2.
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Temperature
The Hydrolab temperature sensor is a 30k ohm variable resistance thermistor. The temperature sensor is included with every Hydrolab sonde.
Features:
- 316 Stainless Steel, 30k ohm thermistor
- Variable resistor
Benefits:
- Provides critical compensation for Dissolved Oxygen, Conductivity, pH, and nutrient sensors
- Compliant with EPA170.1 and SM2550B
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The bearings of industrial rotating equipment operate under arduous conditions - often for considerable periods of time. The most reliable indicator of bearing condition is the temperature of the metal beneath the shoe.
Recognition of rising temperature can provide a warning of the breakdown of the lubricating oil film; thus allowing machine shutdown and maintenance to take place - avoiding the probable catastrophic failure of the bearing and possible damage to its mounting. Conax Miniature Bearing Sensors provide a simple and cost-effective method to monitor bearing temperatures.
Features:
- For embedded applications in rotating machines
- RTDs - 100 ohm platinum, 0.00385 ohm/ohm/°C
- Thermocouples types J, K, T & E
- Single and duplex sensors
- Various styles and sizes
- Operating Temperature: to 250° F ( 120° C)
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Install miniature sensors in or beneath the babbitt layer of bearing shoes. They monitor metal temperature — the most reliable indicator of bearing condition — to give early warning of oil film breakdown. Machines can then be shut down and the problem corrected before catastrophic failure occurs.
While no larger than many bare ceramic elements, these RTDs have metal cases and insulated leads to withstand rough handling and harsh environments. They’re easy to install in drilled holes for general purpose sensing.
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Mainly based on the float switch design, these controllers help to monitor the liquid level (as combined units they monitor both liquid level and temperature) in oil reservoirs of fluid power and lubrication systems.
Attached to the tank top cover, they penetrate directly into the hydraulic fluid or the lubricant.
Each of the following series offers particular features and details culminating in the extreme density of functions offered by the Multiterminal.
Level switch Fluidcontrolterminal series
High number of functions reduces requirements for installation, space and cost
Adjustable level contacts
Connecting flange according to DIN 24 557 part 2
Directly attached electronic contact thermometers optional
The FC terminals offer the functions of tank breathing, level/temperature control, filling and topping up and oil sampling in a very compact design.
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Fast- Response Temperature Sensor with pt1000 Resistor
The fast-response temperature sensor with pt1000 resistor is used for water temperature measurement in hot water supply, solar panels, boiler system etc.
It can be directly mounting in pipe or plate of vessel, the response time is about 1 second.
Technical Data:
1) reaction time: 2 second max
2) Temperature sensing element: pt1000
3) Cable length: 1000mm or client required
4) Mounting threads: 1/2” G connection threads or client required
5) Housing material: SUS304 or SUS316L
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These RTDs cover the full temperature scale of the international standard EN60751. Precision sensing elements and nickel alloy sheaths are capable of measurements from -200 to 850°C (-328 to 1562°F) with typical ice point drift less than ±0.05°C.
600°C models have stainless steel sheaths for reduced cost. They use the same element structure as 850°C models for excellent accuracy and stability.
- Platinum elements to EN60751, Class A or B
- English and metric diameters
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You can mount these probes directly in fluid streams for accurate, reliable sensing. Time constant is just 2 seconds, compared to 10 seconds for an ordinary stainless probe or up to 50 seconds for a thermowell. The result is more accurate monitoring of dynamic processes.
- Stainless steel probes for use to 260°C (500°F)
- Pressure rating 1500 psi (103 bar)
- Quick reaction to changing fluid and gas temperatures
- NPT (U.S.) or metric threads
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The bearings of industrial rotating equipment operate under arduous conditions - often for considerable periods of time. The most reliable indicator of bearing condition is the temperature of the metal beneath the shoe.
Recognition of rising temperature can provide a warning of the breakdown of the lubricating oil film; thus allowing machine shutdown and maintenance to take place - avoiding the probable catastrophic failure of the bearing and possible damage to its mounting. Conax Miniature Bearing Sensors provide a simple and cost-effective method to monitor bearing temperatures.
Features:
- For embedded applications in rotating machines
- RTDs - 100 ohm platinum, 0.00385 ohm/ohm/°C
- Thermocouples types J, K, T & E
- Single and duplex sensors
- Various styles and sizes
- Operating Temperature: to 250° F ( 120° C)
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- Small, rugged RTDs and thermocouples
- Install in bearings for early warning of overheating
- Bolt-on designs for easy installation
- Single or dual elements
- Wide variety of leadwire options
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Measuring range : from 0/+10 Pa to -10 000/+10 000 Pa
Configurable intermediary and central zero ranges
Air velocity and airflow functions
Interchangeable measuring sensor (SPI technology)
Simultaneous display of 1 to 4 parameters
External transmitter unputs (KIMO class 200 and 300) and thermocouple K
2 output 4-20 mA or 0-10 V (4 wires), RS 232, 2 RCR relays 6A/230 Vac
2 visual (dual color LED) and audible (buzzer) alarms
Software, keypad or remote control configuration
MODBUS network RS 485 system (optional)
ABS or ALU IP 65 housing, with or without backlit gaphic display
Mounting with the 1/4 turn system with wall-mount plate
CP301 : -100/+100 Pa (resolution : 0.1 Pa)
CP302 : -500/+500 Pa
CP303 : -1000/+1000 mbar
CP304 : -10 000/+10 000 mbar
• Barbed fittings Ø 5,2 mm
• Unit of measurement : Pa, mmH2O, mbar, inWG, mmHG
• Power supply : 24 Vac /Vdc, 115 Vac or 230 Vac
• Outputs : 2 x 4-20 mA or 2 x 0-10 V
• Functions : pressure, air velocity, airflow with Pitot tubes, Debimo and other coefficients, integration of measure, self-calibration, measuring correction factor, temperature compensation : manual or automatic (thermocouple K input).
Join our distribution network all over the word....Contact us !
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ComfortSense
Thermal comfort measurement according to EN 13182, ISO 7736 and ASHRAE standard 113
Dantec Dynamics’ ComfortSense system is designed for research and development of heating and air conditioning systems requiring multi-point measurements of air velocity and temperature. Draught measurements require omnidirectional sensors with a frequency response of at least 2 Hz, which is fulfilled by the present system.
ComfortSense elements
The ComfortSense system consists of a main frame with anemometer circuits for up to 16 probes. The omnidirectional probes measure both air velocity and temperature. Six frames can be connected so that up to 96 probes can be monitored simultaneously. The ComfortSense main frame has a built-in A/D converter with USB 2.0 interface.
Easy-to-use
It is easy for the user to setup a measurement sequence and make a measurement grid with selection of probes from a user library. The software delivers statistical results based on user-defined measurement cycles. The ruggedly designed probes and cables are perfectly suited for large test rooms.
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Customer Requirement:
An RTD assembly was needed to monitor product temperature by piercing a sealed bottle within a sterilization chamber. When not monitoring product temperature, the assembly was also used to monitor internal chamber temperatures. Process temperatures reached 134°C.
Conax Design Solution:
Conax provided a 3-wire, 100 ohm platinum RTD assembly with a 4" long chisel point tip. The assembly consists of a sealed T3 termination, with 10 foot of treated silicone insulated cable that prevents moisture penetration, and a 0.125" diameter 316SST sheath. The assembly offers ±0.12% ohms accuracy @ 0°C. A Conax PG2 sealing gland seals the cable exiting the chamber. This product, one of the available configuration options of the Conax "Sterisensor," provides superior quality at a very competitive price.
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Example:
-Platinum-chip temperature sensors in SMD style on epoxy card to EN 60 751, PCSE style (90.6122)
for temperatures from -20 to +150°C
Reference values Pt100, Pt500 and Pt1000
standardized nominal values and tolerance
pre-assembled measuring insert
automated processing is possible
SMD temperature sensors offer a price advantage
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The ifm temperature sensors are based on a PT 1000 which converts the measured quantity of temperature into a signal as a result of the change in resistance. A microprocessor controls the evaluation of the electrical signal. For the efector 600 the system temperature is directly indicated on the unit by an LED display.
The electronic circuitry is made in film technology, i.e. a flexible, temperature-stable and extremely resistant polyimide film is used as a carrier for the SMD components. In conjunction with a special potting compound this leads to a high shock and vibration resistance. The microprocessor and the display make the handling of the efector 600 very simple. By means of programming buttons the values for switch point, hysteresis, switching frequency and delay time can be set electronically without the system temperature being present. This enables the installation of the efector 600 in a few minutes. The values are saved in an EEPROM independently of the supply voltage.
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Install these compact sensors anywhere for accurate point sensing and fast response. All Thermal-Tab modules use a thin-film RTD element. All Thermal-Ribbon models conform to EN60751 Class B tolerance when ordered with a PD platinum element.
- Fast response surface sensing in aerospace, medical and industrial devices
- Rugged lamination construction
- Polyimide, silicone rubber or Mylar™ insulation
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Insert these thin, laminated RTDs in winding slots to detect high temperatures before insulation damage occurs. RTD temperature sensors continuously monitor conditions and provide the long term trend data that is necessary for making adjustments before unexpected alarms occur.
The sensing elements of stator RTDs extend through most of the body length to provide an average temperature reading. This eliminates the danger of a point-type sensor missing a localized hot spot. Six sensors are recommended for each motor, two per phase. Locate sensors near the hottest point of the windings for best performance.
Some models comply with European standards for electrical apparatus for potentially explosive atmospheres: ATEX Directive 94/9/EC EN 50 014: 1997, General requirements EN 50 019: 2000, Increased safety.
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High temperature applications
High pressure applications
ATEX executions
Custom models for special applications
Wells, Flanges and accessories
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fluid-Check ® Temperature Sensor TS-1-A-120-3/8“
for measuring flow of oil in pipes.
Installation ONLY 3 Minutes, NO NEED TO CUT PIPES www.servclip.com
Examples:
Temperature of aggregates, overheating of pumps, control of heat exchangers, lubrication systems.
Description
The temperature sensor TS-1-A-120-3/8“ can be used for direct temperature measurements inside pipes such as hydraulic and lubricating oil pipes.
In addition to its robust and compact design, this sensor stands out by its high accuracy and its extensive measurement range. As a standard, the housing and all parts exposed to the liquid are made of stainless steel (Type 1.4571) Soft seals consist of Viton.
Can be combined with measuring connector serv Clip® type 2 (for mounting on non-pressurized pipes).
Technical data:
- Temperature sensor Type L thermocouple
- Temperature range -30 ... +120 °C
- Output 4 ... 20 mA / 2 wires
- Protection mode IP 65
- Right-angle plug connection DIN 43650 A
- Robust stainless steel housing
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Conax Technologies designs, engineers and manufactures sensors in sizes starting at 0.040"/1mm diameter with probe configurations available in over 30,000 combinations of mounting styles suitable for applications from laboratory to large industrial environments. We offer a complete system approach, from sensor to transmitter, to provide a single source to satisfy your temperature sensing needs. It's one more way we give you exactly what you want and make it easier than ever.
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From miniature detectors to 100 foot averaging thermometers, from flexible Thermal-Ribbons to heavy duty probe assemblies, our selection lets you choose the best model for your needs. We can supply platinum, nickel, nickel-iron, and copper RTDs with curves to match any instrumentation. Minco also offers thermocouples and thermistors mechanically interchangeable with RTD models to help you standardize installations.
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- Monitor water or chemical solution temperature in cooling tower sumps and storage tanks
- True continuous averaging sensor eliminates errors due to temperature stratification
- Stainless steel case is rugged and impervious to most chemicals
- Bend or manipulate the probe to accommodate a variety of sump and tank designs
- You can specify the overall probe length and the length of the temperature sensitive zone to fully immerse the sensitive zone in liquid
- NEMA 4 weatherproof connection head
- Optional 4 to 20 mA temperature transmitter
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