12" RTD Sensor Probe Industrial Head Assembly - PT100 3-Wire

The 12" RTD Sensor Probe Industrial Head Assembly – PT100 3-Wire is a rugged, high-accuracy temperature sensing solution designed for demanding industrial environments. Featuring a stainless steel probe, cast aluminum connection head, and precision platinum RTD sensing element, this assembly provides reliable and repeatable temperature measurement for process control, monitoring, and instrumentation applications.

Engineered for durability and long-term stability, this industrial RTD probe is ideal for use in manufacturing, power generation, chemical processing, and other critical applications where accurate temperature measurement is essential.

Designed for Industrial Temperature Measurement

This RTD probe assembly is specifically designed for industrial process environments where reliability and accuracy are critical. The combination of a robust mechanical design and precision sensing element ensures dependable performance under demanding operating conditions.

Typical applications include:

• Industrial process temperature monitoring

• Power generation systems

• Chemical and petrochemical processing

• HVAC and energy systems

• OEM equipment integration

PT100 Platinum RTD Element for High Accuracy

At the core of the sensor is a precision platinum RTD element:

• PT100 (100 ohm at 0°C)

• 3-wire configuration

• 385 platinum curve (α = 0.00385)

The sensing element provides:

• High measurement accuracy

• Excellent repeatability

• Stable performance over time

The datasheet specifies a ±0.12% resistance tolerance at 0°C, ensuring precise and consistent temperature readings.

3-Wire Configuration for Improved Accuracy

The 3-wire RTD configuration helps minimize measurement errors caused by lead wire resistance. This makes the sensor ideal for applications where:

• Cable lengths are moderate

• Higher accuracy is required

• Temperature stability is critical

Compared to 2-wire RTDs, the 3-wire design provides better compensation for resistance changes in the lead wires.

12-Inch Stainless Steel Probe for Industrial Applications

This model features a 12-inch insertion length, providing flexibility for a wide range of installation requirements.

• Probe length: 12 inches

• Sheath diameter: 0.250 inches

• Material: 316 stainless steel

The 316 stainless steel sheath offers:

• Excellent corrosion resistance

• Compatibility with harsh process environments

• Long-term durability

The probe is suitable for immersion or insertion into process media.

Wide Temperature Measurement Range

The RTD assembly is designed for a broad range of temperature applications:

• Operating range: –45°C to +650°C (–50°F to +1200°F depending on configuration)

This wide temperature capability makes the sensor suitable for both low-temperature and high-temperature industrial processes.

Industrial Head Assembly for Easy Wiring and Protection

The RTD probe is equipped with a heavy-duty industrial connection head:

• Material: Cast aluminum

• Threaded cap with O-ring gasket

• IP67 rated enclosure

The head assembly provides:

• Protection from dust and moisture

• Secure wiring termination

• Easy access for maintenance

The included chain-secured cap ensures the enclosure remains protected while allowing convenient access when needed.

Standard Industrial Connections

The assembly includes standard connection interfaces for easy integration:

• Process connection: 1/2" NPT

• Conduit connection: 3/4" NPT

These industry-standard connections allow the sensor to be easily installed into piping, tanks, or process equipment.

Durable Terminal Block Design

Inside the head assembly, the RTD features a robust terminal block:

• Stainless steel terminals and screws

• 3-pole ceramic base

This design ensures:

• Reliable electrical connections

• Resistance to high temperatures

• Long-term durability in industrial environments

Minimum Insertion Depth and Installation Considerations

For optimal measurement accuracy, the sensor requires:

• Minimum insertion depth: 5 inches

Proper insertion ensures that the sensing element is fully exposed to the process temperature and minimizes measurement error.

Stable Response Time for Process Control

The RTD probe provides predictable thermal response:

• Time constant: ~9 seconds (to reach 63.2% of a step change)

This response time is suitable for most industrial process applications where stable and accurate readings are more critical than ultra-fast response.

Built for Harsh Industrial Environments

The RTD assembly is designed to withstand demanding conditions:

• Corrosion-resistant materials

• Sealed IP67 head enclosure

• High-temperature capability

• Rugged mechanical construction

These features ensure reliable operation in environments with exposure to moisture, dust, vibration, and temperature extremes.

Typical Applications

The 12" Industrial RTD Probe Assembly is ideal for:

• Process temperature monitoring in tanks and pipelines

• Industrial furnace and heat system monitoring

• Power generation and turbine systems

• Chemical and petrochemical processes

• Food and beverage processing (where compatible)

• OEM equipment temperature measurement

Why Choose an Industrial RTD Assembly?

Industrial RTD assemblies provide several advantages over basic sensors:

• Integrated protection and wiring enclosure

• Standard process connections for easy installation

• Improved durability and longevity

• Enhanced measurement accuracy and stability

The combination of a PT100 element and rugged mechanical design makes this assembly a reliable choice for critical applications.

Key Features at a Glance

• PT100 platinum RTD (3-wire configuration)

• 12-inch probe length

• 316 stainless steel sheath (0.250" diameter)

• Wide temperature range up to 650°C

• Cast aluminum industrial head (IP67 rated)

• 1/2" NPT process connection

• 3/4" NPT conduit connection

• Stainless steel terminal block with ceramic base

• ±0.12% resistance tolerance at 0°C

• 9-second response time

• Made for industrial applications

A Reliable Solution for Industrial Temperature Measurement

The 12" RTD Sensor Probe Industrial Head Assembly – PT100 3-Wire provides a robust, accurate, and easy-to-install solution for temperature measurement in demanding industrial environments. Its combination of precision sensing, durable construction, and flexible installation options makes it an excellent choice for process monitoring and control.

Optimize Your Temperature Measurement System

Whether you are monitoring critical process temperatures or integrating sensors into industrial equipment, this RTD probe assembly delivers the accuracy, reliability, and durability required for long-term performance.

Contact us today to learn more or configure the right RTD solution for your application.