Secure Bayonet Lock
Bayonet locking mechanism provides quick installation while securely holding the sensor in position during operation
TC43- Flexible Spring Bayonet Style Thermocouple
SKU: TC43
Reliable Surface Temperature Monitoring
TC43- Flexible Spring Bayonet Style Thermocouple
Spring-Loaded Bayonet Thermocouple for Reliable Surface Temperature Measurement
The TC43 Flexible Spring Bayonet Style Thermocouple is designed for accurate and dependable surface temperature measurement where keeping consistent sensor contact is essential. Its spring-loaded bayonet cap applies continuous pressure against the measuring surface, helping improve heat transfer and providing stable temperature readings even in applications exposed to vibration or regular movement. Manufactured with a 316 stainless steel sheath and flexible stainless steel spring, the TC43 is built for long service life in demanding industrial environments. Available in Type J, K, T, and E thermocouples with grounded or ungrounded junctions, it can be customized with different probe diameters, immersion lengths, lead wire types, connectors, and accessories to meet OEM equipment, machinery, plastics processing, motor, bearing, packaging, and general industrial temperature sensing requirements. Manufactured to ASTM E608/E608M, IEC 60584, and ANSI MC96.1 standards, the TC43 delivers steady performance for both new installations and replacement applications.
Reliable Surface Contact
Spring-loaded bayonet cap maintains continuous contact with the measuring surface for stable and repeatable temperature readings
High Accuracy
Manufactured to ASTM E608/E608M, IEC 60584, and ANSI MC96.1 standard tolerances for dependable temperature measurement
Multiple Termination
Compatible with bare leads, miniature plugs, standard plugs, high-temperature connectors, jacks, and optional accessories
Rugged Construction
Built with a 316 stainless steel sheath for durability in demanding industrial environments
Custom Configuration
Available with custom probe diameters, immersion lengths, lead wire lengths, connectors, and accessories
Quick Specifications
Thermocouple Type
Type J, K, T & E
Measuring Junction
Grounded , Ungrounded
Tip Diameter
3/16", 1/4", 3.0 mm, 5.0 mm, 6.0 mm & 8.0 mm
Bayonet Design
Spring-Loaded Single Slot Bayonet Cap
Lead Length
Custom length
Lead Wire Insulation
PVC (105°C)*, Teflon (205°C)*, Teflon (260°C)*, Fiberglass (510°C)*, High Temperature Fiberglass (704°C)*
Ideal for
Electric Motors
Plastic
Industrial/OEM
Compressors
HVAC
Pumps
Heater
Maintenance
Electric Motors
Plastic
Industrial/OEM
Compressors
HVAC
Pumps
Heater
Maintenance
The TC43 Flexible Spring Adjustable Bayonet Style Thermocouple is designed for accurate surface temperature measurement on industrial equipment whereby maintaining constant contact with the sensing point is essential. This Flexible Spring Adjustable Bayonet Style Thermocouple features a spring-loaded bayonet cap that applies continuous pressure against the measurement surface, helping minimize air gaps that can affect temperature readings while delivering stable performance in applications exposed to vibration and mechanical movement.
Built with a rugged 316 stainless steel sheath and a flexible stainless steel spring, the TC43 is well suited for demanding industrial environments in which durability and dependable operation are important. The bayonet locking mechanism allows quick installation and secure mounting with a compatible bayonet adapter, making routine maintenance and sensor replacement straightforward while assuring reliable contact with the monitored surface.
The Flexible Spring Adjustable Bayonet Style Thermocouple is available in Type J, K, T, and E thermocouple calibrations, allowing it to match different operating temperatures and process requirements. Customers can choose either grounded or ungrounded junctions based on their application. Grounded junctions provide rugged construction and effective heat transfer, while ungrounded junctions offer electrical isolation to help reduce electrical interference in delicate applications.
To meet OEM and replacement requirements, the TC43 can be customized with various probe diameters, immersion lengths, lead wire lengths, insulation materials, connectors, and termination styles. Lead wire insulation options are available for temperatures from 105°C to 704°C, while threaded bayonet adapters, hose clamp adapters, wire clamps, cord-end lugs, and spade lugs simplify installation across a wide range of industrial equipment.
Manufactured to ASTM E608/E608M, IEC 60584, and ANSI MC96.1 standard tolerances, with calibration available to ASTM E220 upon request, the TC43 Flexible Spring Adjustable Bayonet Style Thermocouple provides a dependable and configurable temperature sensing solution for OEM equipment, industrial machinery, plastics processing, packaging equipment, motors, bearings, and other applications needing reliable surface temperature monitoring.
Product Specifications
Review the standard specifications and available configuration options for the BTC-BAY Copper Tip Bearing Thermocouple. Product dimensions, materials, temperature ratings, and optional features may vary depending on the selected configuration
Thermocouple TypeType J, K, T & E
Measuring JunctionGrounded , Ungrounded
Tip Diameter3/16", 1/4", 3.0 mm, 5.0 mm, 6.0 mm & 8.0 mm
Bayonet DesignSpring-Loaded Single Slot Bayonet Cap
Lead LengthCustom length
Lead Wire InsulationPVC (105°C)*, Teflon (205°C)*, Teflon (260°C)*, Fiberglass (510°C)*, High Temperature Fiberglass (704°C)*
Termination OptionsBare Ends, Standard Plug, Miniature Plug, High Temperature Plug, Ultra Temperature Plug
Tip Sheath MaterialSS 316 Stainless Steel
Industry StandardsASTM E608 / ASTM E608M / IEC 60584, ANSI MC96.1
CalibrationISO 17025/ NIST
Product Datasheet
Technical specifications, dimensions, ordering information, and configuration options for the BTC-BAY Bearing Thermocouple
Other Downloads
Installation & Maintenance Manual
Spare Parts & Accessories
Complete your installation with compatible mounting accessories, connectors, and replacement components for the TC44 Thermocouple.
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SC-STANDARD IN-LINE PLUGS AND JACK (220° C)
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Find more…Product Videos
Watch product overview, installation, and application videos for the BTC-BAY Bearing Thermocouple
Temperature Transmitter | Tempotech Controls Inc
A temperature transmitter takes the temperature data from a sensor, like an RTD or thermocouple, and converts it into a standard signal, usually 4-20mA or 0-10V. This signal can be sent to control systems, PLCs, or monitoring equipment to keep track of temperature in real-time.
Read transcript
Video Transcription: Temperature Transmitter Technology & Application
[00:05] A temperature transmitter is a critical component in industrial automation that converts low-level sensor signals into standardized outputs. This ensures accurate, reliable, and long-distance signal transmission for complex control systems.
[00:14] Thermocouple and RTD sensors are the industry standards for measuring the temperature of processed media. However, in challenging environments—characterized by high temperatures, electromagnetic interference (EMI), or long cable runs—the raw signals from these sensors can degrade.
[00:33] This signal degradation, often caused by wire resistance and electrical noise, can lead to inaccurate readings. To mitigate these issues, temperature transmitters are used to amplify, condition, and convert sensor data into a standardized 4-20mA output, ensuring high-integrity data across the plant.
[00:59] Several signal types are used depending on the application:
4 to 20 mA Analog Signal: The most common standard, highly resistant to noise and ideal for long distances.
0 to 10V: A common analog option, though more susceptible to signal loss over length.
Digital Signals (HART & Modbus): Used for advanced remote communication and diagnostics.
RS485/RS232: Essential for integrating transmitters with PLCs and SCADA systems.
[01:35] The Tempotech TT367 series temperature transmitters are engineered for versatility. They offer precise sensor-transmitter matching and robust protection against interference. Configurable via the HART protocol, these units allow for easy setup and reliable field operation.
[01:56] Key reliability features include open/short-circuit detection, incorrect wiring alerts, and NAMUR NE43 failure standards. The TT367 supports RTD, TC, Ohm, and Millivolt inputs, making it a universal solution for your instrumentation needs.
[02:26] With integrated dot-matrix displays and easy configuration options, our transmitters provide the precision you can trust. Contact our technical sales team today to find the best transmitter for your application.
Configure This Product
Open the product configurator to select available options and prepare your configuration.
Frequently Asked Questions
Find answers to common questions about the TC43 thermocouple
What is the TC43 Flexible Spring Bayonet Style Thermocouple used for?+
The TC43 Flexible Spring Bayonet Style Thermocouple is designed for surface temperature measurement on industrial equipment where the sensing tip must remain in firm contact with the measured surface. It is commonly used on electric motors, bearings, gearboxes, plastic processing equipment, packaging machinery, and OEM equipment to provide accurate and repeatable temperature monitoring.
How does the spring-loaded bayonet cap improve measurement accuracy?+
The spring-loaded bayonet cap applies continuous mechanical pressure that keeps the sensing tip in contact with the measurement surface. Maintaining consistent contact helps improve heat transfer, minimizes the effect of air gaps, and provides stable temperature readings, even on equipment exposed to vibration or normal operating movement.
Should I choose a grounded or ungrounded junction for my application?+
A grounded junction offers faster heat transfer and rugged construction, making it suitable for many general industrial applications. An ungrounded junction electrically isolates the sensing element from the sheath, helping reduce electrical interference in electrically noisy equipment. The best choice depends on your process requirements and instrumentation.
Which thermocouple types are available for the TC43?+
The TC43 is available in Type J, Type K, Type T, and Type E thermocouple calibrations. Each calibration is intended for different operating temperature ranges and process conditions. If you are unsure which thermocouple type is best for your application, our technical team can help you select the most suitable option.
Can the TC43 be customized for my equipment?+
Yes. The TC43 can be configured with different probe diameters, immersion lengths, lead wire lengths, insulation materials, connectors, measuring junctions, and bayonet accessories to match your installation requirements. This makes it suitable for both OEM production and replacement applications.
What bayonet adapter should I use with the TC43?+
The correct bayonet adapter depends on your mounting arrangement, thread size, and installation method. Tempotech Controls offers threaded bayonet adapters and other compatible accessories to ensure secure installation and proper sensor positioning. If you are replacing an existing sensor or designing new equipment, our technical team can recommend the appropriate adapter for your application.
