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Temperature Sensors

Find industrial Thermocouples, RTDs, Thermocouple Instrumentation, and RTD instrumentation for most industrial temperature-sensing applications for testing or OEM products. We have the right accessories to make the sensors easy to use. We’re always available to help you figure out the best product to use; we have an applications engineer on staff to help you with a specific application.

Technical Information about Thermocouples 

Understanding Thermocouple Time Constants & Response Times

We are often asked about the responsiveness of sheathed mineral insulated Thermocouples.

Here are some important terms and factors to know... 

Time Constant

When researching the responsiveness of a thermocouple you will most often see it expressed as a Time Constant.  The Time Constant of a thermocouple is defined as the time required for the sensor to respond to 63.2% of its total output signal when subjected to a step change in temperature. 

Response Time

The Time Constant of a thermocouple is not the same as the Response Time.  When someone wants to know the Response Time of a thermocouple, they really want to know how long it takes the thermocouple to reach its full output.  Five Time Constants are required for the thermocouple to respond to 99.3% of the total step change temperature. See more information about this here.

Need help choosing the right solution for your project?
Contact our knowledgeable Application Engineers today.

Starting at $7.50

• Simple Low Cost Temperature Sensor
Type J, Type K, or Type T Thermocouple
• FEP Insulated Lead Wire
• Ideal for Air or Surface Temperature Measurements

Starting at $22.00

• Fast Response
• Type K Thermocouple
• 30 AWG FEP insulated conductors, solid core
• Easy installation, remove backing and press self-adhering Kapton tape to surface

Starting at $26.00

• Miniature quick disconnect connector
• Special Limits of Error accuracy
• Mineral insulated sheath for high strength, bendable
• Ideal for Air, Gas, or Liquid temperature measurements

Starting at $54.75

• Heavy Duty Transition Joint with Spring Strain Relief
• Special Limits of Error accuracy
• Mineral insulated sheath for high strength
• Enclosed Tip Sensing Junction

Starting at $51.75

• Heavy Duty Transition Joint with Spring Strain Relief
• Special Limits of Error accuracy
• Mineral insulated sheath for high strength
• Enclosed Tip Sensing Junction

Starting at $43.95

• Fast Response
• Flexible Stainless Steel pad, can be attached to flat or curved surface
• Pad can be brazed, welded, cemented, or clamped to surface

Starting at $34.75

• Type J or K Thermocouple
• 10 mm, 12 mm, & 14 mm ID
• -40 °F to 500 °F operating range (-40 °C to 260 °C)
• Stainless steel over-braid cable with FEP insulated conductors
• Bolt or screw mounted
• Bendable ring terminal

Starting at $42.25

• 28 AWG FEP insulated conductors, stranded
• Easy installation, cement-on or bolt-down
• Miniature size

Starting at $50.00
  • 28 AWG FEP insulated conductors, stranded
  • Easy installation, #8-32 male threaded fitting
  • Miniature size