Your Professional Fixed Thread Temperature SensorSupplier
Xian Baochen Information Technology Co., Ltd. is located in high-tech Zone, Xi 'an, Shaanxi Province, China, is a focus on sensors, transmitters, inverters, power semiconductor devices and supporting instruments R & D, manufacturing, sales and service enterprises. The company invests in research and development team, cooperates with excellent universities, integrates industry resources, and provides the best quality solutions for domestic and foreign users. Enterprise mission: to meet user needs and create value for customers.
Why choose us
Sales Market
We Products are exported to Europe, America, Southeast Asia, West Asia, Central Asia and other countries around the world. Our products are well received in these markets.
Our Service
Able to quickly respond to customer needs, to provide personalized customization, timely delivery, professional technical support and perfect after-sales service.
Strict Quality Control System
Able to efficiently produce large quantities of products, advanced production processes and stable supply chains, the implementation of strict quality control system. Constantly introduce new technologies and new materials to improve product performance and production efficiency.
Wide Range of Applications
Through the EU CE, RoHs testing, products are widely used in petrochemical, water conservancy and hydrology, machinery and equipment, automobile manufacturing, industrial process control, weighing measurement, people's livelihood applications and other fields.
Fixed Thread Temperature Sensor
A Fixed Thread Temperature Sensor is a device that detects and measures hotness and coolness and converts it into an electrical signal. We design and manufacture a broad portfolio of temperature sensors – including our NTC thermistors, RTDs, thermocouples, and thermopiles – designed for efficiency and easy installation, with capacity to reliably integrate technology that responds to human behavior.
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Technical parameter |
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Product name |
Fixed thread temperature sensor |
Probe material |
All 304 stainless steel (customizable) |
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International standard scale |
Pt100/K/E |
Probe diameter |
Default diameter 6mm, (customizable) |
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Probe length |
10mm ,50mm ,100mm(customizable) |
Terminal |
U Type Terminal(Default)/(Customizable) |
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Line length |
Default line length 1.5m (customizable) |
Wire |
Three core high temperature shielding wire |
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Measuring range |
-50+420℃(Pt100)/0~600℃(K)/0-400℃(E)(Customizable) |
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Scope of use |
Packaging machinery, food machinery, all kinds of temperature control meter, injection molding machine, dispensing machine and other industries. |
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Mounting thread |
M6*1 ,M8*1 ,M8*1.25 ,M10*1 ,M10*1.5 ,M12*1 ,M12*1.5,M12*1.75 ,M14*1.5 ,M16*1.5 ,M18*1.5 ,M20*1.5 ,M27*2,PT1/8,PT1/4,PT3/8,PT1/2,PT3/4,1 inch thread. |
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Process control: Temperature is usually an important parameter for process control.
Industrial equipment maintenance: Temperature sensors can be used for the maintenance of industrial equipment to improve the service life of the equipment
Safety alert: Temperature sensors can be used to detect changes in ambient temperature to improve safety
Circuit design: Temperature sensors are used in many circuit designs, such as thermal cutoff, thermostatic control.
Temperature measuring instruments: Temperature sensors can also be used in temperature measuring instruments
Advantages of Fixed Thread Temperature Sensor
Threaded Stability
Secure installation with stainless steel threads (M3 to M12).
Self-Heating Minimized
Low 0.4 K/mW coefficient ensures minimal measurement drift.
Long-Term Reliability
Stability drift ≤0.04% over years of operation.
Flexible Customization
Choose cable lengths, connector types, or special coatings.
Applications of Fixed Thread Temperature Sensor
Industrial Machinery
Monitor motors, reactors, and turbines.
Medical Equipment
Ensure precise sterilization and lab instrument safety.
Renewable Energy
Optimize solar thermal systems and wind turbine gearboxes.
Automotive Testing
Track exhaust, battery, and engine temperatures.
How to choose Fixed Thread Temperature Sensor
Ultra-High Accuracy
Achieve ±0.01°C tolerance (1/30B class) for critical applications.
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Wide Temperature Range
Operate seamlessly from -200°C to +850°C.
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Robust Construction
Vibration resistance (40g), impact resistance (100g), and IP68-rated options.
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Fast Response
Detect temperature changes in as little as 0.05 seconds.
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Customizable Solutions
Tailor thread sizes (M3 to M12), lead materials (Pt, FEP, PTFE), and wire configurations (2/3/4-wire).
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Components of Fixed Thread Temperature Sensor
Junction Box
Used to connect to external circuits and output temperature signals (such as analog signals 4-20mA, 0-10V, or digital signals such as 0-5V for a DS18B20).
Fixing Thread
Standard thread design (such as M8×1, M12×1.5, etc.) allows direct screwing into threaded connections on equipment or pipes for secure installation.
Protective Tube
Made of stainless steel (such as SUS304, SUS316) or other corrosion-resistant materials, encapsulates a platinum RTD (Pt100/Pt500/Pt1000) or copper RTD (Cu50), protecting the temperature measuring element from media corrosion, mechanical damage, and high-voltage shock.
Working Principle of Fixed Thread Temperature Sensor
Platinum RTD Type
The resistance of a platinum resistor is linearly related to temperature using the formula:
Rt = R0(1+A⋅t+B⋅t²)
By measuring the resistance value, the actual temperature can be inferred, achieving Class A accuracy of ±(0.15+0.002|t|)°C (|t| is the absolute value of the measured temperature).
Copper RTD Type
Suitable for low-temperature environments (-50°C to 150°C), with an accuracy of ±(0.30+0.006|t|)°C.
Digital Type
Directly outputs a digital signal, with a temperature measurement range of -55°C to 125°C and an accuracy of ±0.5°C (-10°C to 85°C).
Install of Fixed Thread Temperature Sensor
Pre-Installation Preparation
Tools and Materials
Tools: Adjustable wrench (matching thread specifications), torque wrench (accuracy ±5%), thread sealant/tight tape, multimeter (for resistance/voltage measurement), infrared thermometer (for calibration assistance).
Materials: Gaskets matching the material of the sensor protection tube (e.g., metal-graphite spiral wound gaskets), explosion-proof junction box (required for explosion-proof applications).
Environmental Check
Confirm that the installation location is free of strong electromagnetic interference (e.g., inverters, high-voltage cables) and severe vibration (vibration frequencies > 10Hz require the installation of shock-absorbing brackets).
Check the surface flatness of the pipe/equipment. Any unevenness > 0.5mm requires polishing to prevent seal failure.
Sensor Pre-Check
Use a multimeter to measure the sensor resistance (e.g., a Pt100 should be 100Ω ± 0.1Ω at 0°C). Verify that the signal line is not short-circuited or open-circuited.
Installation Steps
Pipe Drilling and Tapping
Drilling Location:
Horizontal pipes: Preferable location is 45° above the flow direction to avoid sediment accumulation (e.g., sewage pipes require installation at a 15° angle).
Vertical pipes: When the flow is from bottom to top, the sensor can be installed vertically; when the flow is from top to bottom, the sensor should be installed at a 45° angle to reduce air resistance.
Drilling Dimensions:
Select a drill bit based on the diameter of the sensor protection tube. Drilling depth = tube insertion depth + 10mm (allowing for sealing space).
Tapping Requirements:
Use a tap with the appropriate thread size. After tapping, blow away any metal chips with compressed air.
Sensor Installation and Sealing
Thread Sealing:
Wrapping the tape: Wrap 8-10 turns in the direction of thread rotation (clockwise), pressing the end into the thread 1-2 threads to prevent loosening.
Thread Sealant: Use a heat-resistant sealant (such as Loctite 542, suitable for temperatures from -60°C to 200°C). Apply a thickness of 0.1-0.2mm to evenly cover the threads.
Installation Torque:
Use a torque wrench to tighten according to the sensor specifications (e.g., 80-100 N·m for M27×2 threads). Overtightening can cause thread stripping, while over-loosening can lead to leakage.
Case study: Insufficient torque at a power plant resulted in a steam leak, damaging the sensor and causing downtime.
Wiring and Protection
Wiring Method:
Three-wire Pt100: Connect the red (R1), white (R2), and blue (R3) wires to the transmitter's positive, negative, and compensation terminals, respectively. Shielding is not required for cable lengths ≤ 100m.
Digital Signal (e.g., DS18B20): Connect the data line to the controller input, VCC to the 5V power supply, and GND to ground. A 10kΩ pull-up resistor is required.
Protection Measures:
Fill the junction box with waterproof adhesive (e.g., 704 silicone rubber). Use explosion-proof glands to seal the cable conduit. The IP rating must be ≥ IP65 (dust and water resistant). Data: A food factory experienced a short circuit due to water ingress into the junction box. After replacing it with a waterproof type, the failure rate dropped by 90%.
Post-installation commissioning
Leak Check
Slowly open the medium valve, grease the threaded connection with soapy water, and observe for bubbling (for pressures ≥ 0.5 MPa, maintain pressure for 5 minutes).
Standard: Leak rate ≤ 0.1 mL/min (per API 598).
Thermal Response Test
Use an infrared thermometer to compare the sensor's displayed temperature with the actual medium temperature. The response time should be ≤ 5 seconds (up to 2 seconds for protection tube diameters ≤ 8 mm).
Method: Insert the sensor into a constant temperature water bath (e.g., 50°C) and record the time it takes for the temperature to rise from 20°C to 45°C.
Signal Calibration
Connect a standard source (e.g., a Fluke 754 Process Calibrator), input 0°C and 100°C standard signals, and adjust the transmitter's zero/span. The error should be ≤ ±0.5°C.
FAQ
As one of the leading fixed thread temperature sensor manufacturers and suppliers in China, we warmly welcome you to wholesale cheap fixed thread temperature sensor in stock here from our factory. All customized products are with high quality and competitive price.
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