Temperature Sensor Probe

Product Specifications

Technical details and manufacturing context for Temperature Sensor Probe

Definition

A temperature sensor probe is a component used in industrial temperature monitoring systems. It is designed to physically contact or be immersed in the medium whose temperature is to be measured. The probe contains a sensing element, such as a thermocouple, resistance temperature detector (RTD), or thermistor, which changes its electrical properties—resistance or voltage—in response to temperature variations. These changes are measured and converted into standardized signals, typically 4-20 mA, for interpretation by monitoring equipment, controllers, or data loggers. The probe is typically housed in a protective sheath made of stainless steel (grades 304 or 316), with platinum and ceramic used in the sensing element. The probe diameter ranges from 3 to 12 mm, and the length from 50 to 500 mm, with custom lengths available. The standard temperature measurement range is -40 to 85 °C, with an accuracy of ±0.5 °C for Pt100 sensors (Class A tolerance per IEC 60751). Response time in water flow is 1 to 10 seconds, depending on the sheath. Insulation resistance is at least 100 MΩ at 500 V DC and 25 °C, per IEC 60751. The probe operates with a supply voltage of 9 to 36 V DC for 4-20 mA transmitters, and the output signal is a two-wire loop-powered 4-20 mA per IEC 60381. Ingress protection ratings range from IP65 to IP68 per IEC 60529, and maximum operating pressure is 10 to 40 MPa per depending on fitting and seal. The weight of a standard probe is 50 to 200 grams. When selecting a temperature sensor probe, verify model-specific values for measurement range, accuracy, response time, and mechanical dimensions with the legal manufacturer or supplier. Confirm that the probe materials are compatible with the process medium and that the probe meets any required standards for your application. Always check the ingress protection and pressure ratings against your installation environment. For verification, request documentation of calibration and compliance with relevant standards.

Working Principle

The probe uses temperature-sensitive materials that change electrical properties with temperature. Thermocouples generate a voltage proportional to the temperature difference between two junctions. RTDs (e.g., Pt100) change resistance in a predictable manner with temperature. Thermistors exhibit a large change in resistance with temperature. These changes are measured by a transmitter, which converts them into a standardized 4-20 mA signal. The signal is then transmitted to a monitoring system for display, control, or logging. The probe's design ensures accurate thermal contact with the medium while protecting the sensing element from environmental factors.

Common Materials

Stainless Steel, Platinum, Ceramic

Technical Parameters

Parameter	Typical range	Notes & selection driver
Temperature Measurement Range	-40–85 °C	Standard range for industrial probes
Accuracy	±0.5 °C	Class A tolerance for Pt100IEC 60751
Response Time	1–10 s	In water flow, depends on sheath
Probe Diameter	3–12 mm	Common sizes for insertion
Probe Length	50–500 mm	Custom lengths available
Insulation Resistance	≥100 MΩ	At 500 V DC, 25°CIEC 60751
Supply Voltage	9–36 V DC	For 4-20 mA transmitters
Output Signal	4–20 mA	Two-wire loop poweredIEC 60381
Ingress Protection	IP65–IP68	For outdoor or washdownIEC 60529
Max Operating Pressure	10–40 MPa	Depends on fitting and seal
Probe Material	304–316 SS	316L for corrosion resistanceASTM A276
Weight	50–200 g	Typical for standard probe

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Components / BOM

Sensing Element Part
Detects temperature changes through electrical property variations

Material: Platinum/Nickel/Copper
Protective Sheath Part
Provides mechanical protection and environmental isolation

Material: Stainless Steel/Ceramic
Connection Wires Part
Transmits electrical signals to monitoring system

Material: Copper with insulation
Termination
Interface for connecting to monitoring equipment

Material: Brass/Stainless Steel

Applied To / Applications

This component is essential for the following industrial systems and equipment:

Temperature Monitoring System

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Temperature Sensors & Controllers

View system integration details

Manufacturers of Temperature Sensor Probe

3 companies list this product among what they make. Company figures are quoted from each company's own website; every card states where the relationship came from.

OWON Technology

Fujian, CN

Also makes: Lighting Controller, Motor Controller, Remote Control and 5 more

Listed on the company's own website · profile compiled by CNFX from public sources

Listed there as: “Zigbee Temperature Sensor with Probe”
View source page ↗ owon-smart.com · checked 2026-08-29

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VETENG

Dongguan, Guangdong, CN

Also makes: Temperature Probe, Power Supply (Battery)

Listed on the company's own website · profile compiled by CNFX from public sources

Listed there as: “wireless temperature sensor probe”
View source page ↗ veteng.com · checked 2026-09-03

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Xi'an Yunyi Instrument Co., Ltd.

Shaanxi, CN

Also makes: Pressure Gauge/Sensor, Level Transmitter, Pressure Gauge and 9 more

Listed on the company's own website · profile compiled by CNFX from public sources

Listed there as: “Temperature sensor probe”
View source page ↗ yunyiinstrument.com · checked 2026-08-22

View profile Send enquiry

Manufacturer listings support early research and capability understanding. They are not certification, ranking, or transaction guarantees.

Compiled and source-reviewed by the CNFX editorial team. Each manufacturer above links to the page on that company's own website where the product is listed, with the date we checked it. How we source and review · Page last updated 16 September 2026

Procurement Evaluation Criteria

A practical evidence checklist for RFQ preparation and supplier evaluation.

Technical documentation

Request current drawings, revision history, and a signed specification sheet.

Manufacturing capability

Verify equipment lists, process limits, capacity, and representative production evidence.

Inspection readiness

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Supplier transparency

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CNFX does not score or rank suppliers. Buyers must verify all claims and documents with the legal manufacturer before ordering.

Frequently Asked Questions

What is the temperature measurement range of this probe?

The standard range is -40 to 85 °C, but verify the specific model's range with the manufacturer, as custom ranges may be available.

What output signal does the probe provide?

The probe typically provides a 4-20 mA two-wire loop-powered signal per IEC 60381, but confirm the output type for your model.

What is the accuracy of the probe?

For Pt100 sensors, accuracy is ±0.5 °C (Class A tolerance per IEC 60751). Verify the accuracy for the specific sensing element used.

What are the mechanical dimensions?

Probe diameter ranges from 3 to 12 mm, and length from 50 to 500 mm, with custom lengths available. Confirm dimensions with the supplier.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records.

Preliminary Technical Classification

This page supports structured research, RFQ preparation, and supplier evaluation. It does not replace buyer-led supplier qualification, standards review, or technical approval.

Buyer enquiry

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pressure:	0 to 10 bar
other spec:	Immersion depth: 50-200 mm, Response time: <5 seconds
temperature:	-50°C to 300°C

Product Specifications

Applied To / Applications

Industrial Ecosystem & Supply Chain Structure

Application Fit & Sizing Matrix

Reliability & Engineering Risk Analysis

Compliance & Manufacturing Standards

Manufacturers of Temperature Sensor Probe

Procurement Evaluation Criteria

Supply Chain Compatible Machinery & Devices

Frequently Asked Questions

What is the temperature measurement range of this probe?

What output signal does the probe provide?

What is the accuracy of the probe?

What are the mechanical dimensions?

Data Basis

Request manufacturing insight for Temperature Sensor Probe

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