SMBD-RTD Surface Mount Bolt-Down or Cement-On RTD Sensor - PT100

The SMBD-RTD Surface Mount Bolt-Down or Cement-On RTD Sensor is a compact, high-accuracy temperature sensor designed for reliable surface temperature measurement in industrial, laboratory, and research environments. Featuring a thin-film platinum RTD element and a low-mass aluminum housing, this sensor delivers fast thermal response, excellent accuracy, and consistent performance across a wide range of applications.

Manufactured in the USA using high-quality materials, the SMBD-RTD is ideal for applications where precise surface temperature measurement and flexible mounting options are required.

Designed for Accurate Surface Temperature Measurement

The SMBD-RTD is specifically engineered to measure temperature directly at the surface of a component. Its compact profile and direct-contact design ensure efficient thermal coupling, allowing for accurate and repeatable readings.

This makes it ideal for:

• Surface temperature monitoring of machinery and equipment

• Thermal testing and validation

• Heat transfer analysis

• Industrial process monitoring

By mounting directly to the measurement surface, the SMBD-RTD minimizes thermal lag and improves measurement reliability.

Bolt-Down or Cement-On Mounting Flexibility

The SMBD-RTD offers two versatile mounting options:

• Bolt-down installation: Securely fasten the sensor using a #4 screw through the integrated mounting hole

• Cement-on installation: Attach the sensor using thermal adhesive for applications where drilling is not practical

The datasheet diagram on page 1 highlights the compact mounting footprint and hole size (Ø 0.113 inches), allowing for easy integration into a wide range of applications.

This dual mounting capability provides flexibility for both permanent installations and temporary testing setups.

Thin-Film Platinum RTD Element for High Accuracy

At the core of the SMBD-RTD is a precision thin-film platinum sensing element:

• PT100 (100 Ω at 0°C) or PT1000 (1000 Ω at 0°C)

• Temperature coefficient (α): 0.00385

Platinum RTDs are known for their:

• High accuracy and repeatability

• Excellent long-term stability

• Linear and predictable response

The SMBD-RTD is built to Class A accuracy, providing:

• ±0.15°C accuracy

This ensures reliable and precise temperature measurement in critical applications.

Aluminum Housing for Fast Thermal Response

The sensor features a lightweight aluminum housing designed to enhance thermal response:

• Material: Aluminum

• Low thermal mass for rapid heat transfer

• Improved responsiveness to temperature changes

This design allows the SMBD-RTD to quickly detect temperature fluctuations, making it well-suited for dynamic measurement applications.

Wide Operating Temperature Range

The SMBD-RTD is designed to operate across a broad temperature range:

• Temperature range: –58°F to 400°F (–50°C to 204°C)

This makes it suitable for a wide variety of industrial and laboratory environments.

Fast and Reliable Response

The SMBD-RTD provides a predictable response time:

• Time constant: 6 seconds (63.2% response to a step change)

This response time strikes a balance between speed and stability, ensuring accurate tracking of surface temperature changes.

Durable and Lightweight Design

The compact and lightweight design of the SMBD-RTD allows it to be installed in space-constrained environments without adding significant mass to the measurement surface.

Key benefits include:

• Minimal thermal disturbance to the measured surface

• Easy integration into existing systems

• Reduced mechanical stress on mounting points

Flexible Wiring Options

The SMBD-RTD is available with flexible wiring configurations to suit different measurement requirements:

• 2-wire configuration: Simple and cost-effective

• 3-wire configuration: Improved accuracy through lead resistance compensation

The sensor uses:

• 26 AWG stranded conductors

• PFA Teflon insulation

PFA insulation provides excellent resistance to heat, chemicals, and mechanical stress, ensuring long-term reliability.

Multiple Cable Length Options

To accommodate various installation requirements, the SMBD-RTD is available with multiple cable lengths:

• 36 inches

• 72 inches

• 180 inches

This flexibility allows the sensor to be easily integrated into both compact and large systems.

Optional Connector Configurations

The SMBD-RTD can be supplied with different connector options for easy integration:

• No connector (bare leads)

• Female mini-jack

• Male mini-plug

This ensures compatibility with a wide range of instrumentation and data acquisition systems.

IP64 Rated for Industrial Environments

The SMBD-RTD is designed to withstand typical industrial conditions:

• Ingress protection rating: IP64

This provides protection against dust and splashing water, making the sensor suitable for many industrial environments.

Typical Applications

The SMBD-RTD Surface Mount RTD Sensor is ideal for:

• Industrial equipment temperature monitoring

• Laboratory and R&D testing

• Thermal profiling and validation

• Surface temperature measurement in HVAC systems

• Electronics and component testing

Its fast response and flexible mounting options make it particularly useful in dynamic measurement environments.

Why Choose a Surface Mount RTD?

Surface mount RTDs offer several advantages over other temperature sensing methods:

• Direct contact for improved accuracy

• Stable and repeatable measurements

• Reduced installation complexity

• Minimal signal drift over time

The SMBD-RTD enhances these benefits with its lightweight aluminum design and flexible mounting options.

Key Features at a Glance

• Thin-film platinum PT100 or PT1000 element

• Class A accuracy (±0.15°C)

• Bolt-down or cement-on mounting options

• Aluminum housing for fast response

• Operating range: –58°F to 400°F

• 2-wire or 3-wire configurations

• PFA insulated lead wires

• IP64 environmental protection

• Made in the USA

A Reliable Solution for Surface Temperature Measurement

The SMBD-RTD Surface Mount Bolt-Down or Cement-On RTD Sensor provides a high-accuracy, fast-response solution for surface temperature measurement. Its flexible mounting options and durable design make it an excellent choice for both permanent installations and temporary testing applications.

Optimize Your Temperature Measurement System

Whether you are monitoring equipment performance, conducting thermal analysis, or validating processes, the SMBD-RTD offers the precision, flexibility, and reliability needed to capture accurate temperature data.

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