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Temperature Probes

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About Temperature Probes

Temperature can be measured via a diverse array of sensors. All of them infer temperature by sensing some change in a physical characteristic. The two main categories of these sensors are contact and noncontact style temperature sensors. There are three methods of contact style temperature measurement, which can generally be referred to as temperature probes: thermal resistors (RTD, thermistors), thermocouples and IC sensors.

The most important specification to consider when searching for temperature probes is sensed temperature range.  This is the temperature range the device is rated for sensing.  The number of elements contained in the temperature probe is another important consideration. Typically the more elements in the probe the more accurate and expensive the probe is.  Probes usually have one or two elements for sensing, but some can be configured to have greater than two elements.

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Products & Services Related to Temperature Probes

RTD Temperature Probes
RTD temperature probes convert the RTD resistance measurement to a current signal, eliminating the problems inherent in RTD signal transmission via lead resistance. 
Thermistor Temperature Probes
Thermistor temperature probes sense temperature by using thermistors, devices made of semiconductor materials which exhibit a large change in resistance for a small change in temperature.
Thermocouple Temperature Probes
Thermocouple temperature probes are bimetallic probes that are used in various temperature-sensing applications. They consist of two wires, each of which is made of a different metallic element or alloy.

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Engineering Web: Temperature Probes

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Temperature Probes
Temperature Probes Popular Temperature Probes Sections: Temperature Gauges Temperature Probes Products
EXTECH TP890 Probe, Temperature - Surface Or Air
EXTECH TP890 Probe, Temperature - Surface Or Air
See Grainger Industrial Supply Profile & Catalog
Temperature Controls Pty Ltd
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Part Numbers for Temperature Probes

Part # Distributor Manufacturer Product Category Description
Computes differential temperature between probes HVAC PLUS Not Provided Not Provided Not Provided
3FWX8 Grainger Industrial Supply TEMPCO ELECTRIC HEATER CORP. Thermocouples Assemblies RTD Probe,100 Ohm,Length 12 In,500 F
3FWX2 Grainger Industrial Supply TEMPCO ELECTRIC HEATER CORP. Thermocouples Assemblies RTD Probe,100 Ohm,Length 6 In,900 F
3AEX8 Grainger Industrial Supply TEMPCO ELECTRIC HEATER CORP. Thermocouples Assemblies Thermocouple Probe,Type J,Length 24 In
3AAA5 Grainger Industrial Supply TEMPCO ELECTRIC HEATER CORP. Thermocouples Assemblies Thermocouple Probe,Type J,Length 4 In

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