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RTD Probes and Accessories (231)
Handheld RTD Meters (30)
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Hart Scientific (141)
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RTD Probe (180)
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Home  >  Temperature, Humidity, Moisture and Weather Products > Temperature Products > RTD Instruments and Probes

RTD Instruments and Probes

RTD Instruments and Probes

  • Resistance Temperature Detectors (RTD)


RTD sensors measure temperature by measuring the change in electrical resistance across the metal wire. The resistance value is then measured and interpreted by a RTD thermometer, and displayed for a user to view. While RTD wire can be made of any metal, platinum is the metal of choice due to its excellent repeatability, stability and resistance to corrosion and chemicals.


Temperature Measurement Applications

Measuring and interpreting temperature has many MRO applications. Measurements throughout the plant can be done quickly and easily and without complex analysis. This information can then be stored electronically for later data trend analysis.

An electrical application is plant wiring. Anytime electrical current flows through a cable or connection, electrical resistance generates heat. Increased current flow through a cable generates more heat. If two similar sized cables have different temperatures, then the cable with the higher temperature carries the higher current. Resistance and heat build-up also occurs at loose or defective wiring connections.

Some typical applications for technicians and service personnel are:

Watching bearing temperatures to predict failure
Detecting motor overload
Finding defective transformers
Detecting loose and improper wiring connections
Checking electrical panels for hot spots
Measuring the surface of HVAC ductwork to reveal temperature variations, poor insulation and duct leakage
Diagnosing blown or plugged steam traps from a distance
Evaluating temperature differences between supply/return registers in a HVAC system
Checking for coil sweating on condensate lines in refrigeration systems
Checking the temperature of emergency relief valves
Diagnosing water leaks by measuring wallboard temperatures. Moist spots on walls will experience water evaporation and therefore will measure at a lower temperature
Testing furnace performance by checking the flue and supply grill temperatures
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EW-08117-70 Integral Handle RTD Probe; General-Purpose Immersion, with Cole-Parmer<small><sup>&reg;</sup></small> Three-Pin Connector, 10" Length

Integral Handle RTD Probe; General-Purpose Immersion, with Cole-Parmer Three-Pin Connector, 10" Length

Product Type RTD Probe,Min temperature º F -58,Max temperature º F 932
EW-08117-70
In stock.
$123.00 USD/EACH

Qty:
EW-35626-20 Oakton<small><sup>&reg;</sup></small> Acorn<small><sup>&#153;</sup></small> Temp 6 RTD thermometer

Oakton Acorn Temp 6 RTD thermometer

Product Type RTD Thermometer,Min temperature º F 320,Min temperature º C 200
EW-35626-20
In stock.
$186.95 USD/EACH

Qty:
Representative photo only Oakton Temp 360 Datalogging Precision RTD Thermometer w boot

Oakton Temp-360 Datalogging Precision RTD Thermometer w/boot

Product Type RTD Thermometer,Min temperature º F 330,Min temperature º C 201
EW-91426-60
In stock.
$335.95 USD/EACH

Qty:
Representative photo only Fluke Calibration formerly Hart Scientific Thermometer 4 thermistor RTD inputs

Fluke Calibration (formerly Hart Scientific) Thermometer, 4 thermistor/RTD inputs

Product Type RTD Thermometer,Min temperature º C 270,Max temperature º C 1900
EW-93202-10
Call 1-888-358-4705 for availability.
$5,205.00 USD/EACH

Qty:
Representative photo only Fluke Calibration formerly Hart Scientific Handheld Thermometer Model 1523

Fluke Calibration (formerly Hart Scientific) Handheld Thermometer Model 1523

Product Type Multi-Parameter Thermometers,Brand Hart Scientific,Model 1523
EW-93202-50
Call 1-888-358-4705 for availability.
$1,670.00 USD/EACH

Qty:
Representative photo only HART 1551A 12 Handheld Thermometer Fixed RTD 50 To 160C 1 4x12

HART 1551A-12 Handheld Thermometer, Fixed RTD, –50 To 160C, 1/4x12

Product Type RTD Thermometer,Min temperature º F 58,Min temperature º C 50
EW-93202-08
Usually ships in 8 days.
$655.00 USD/EACH

Qty:
EW-26842-40 Precision RTD Thermometer

Extech Precision RTD Thermometer

Product Type RTD Thermometer,Min temperature º F 199.99,Min temperature º C 129
EW-26842-40
In stock.
$239.99 USD/EACH

Qty:
Representative photo only High temp RTD probe three pin

High-temp RTD probe, three pin

Product Type RTD Probe,Min temperature º F -328,Max temperature º F 1562
EW-93833-00
Call 1-888-358-4705 for availability.
$192.00 USD/EACH

Qty:
EW-90111-12 High-accuracy NIST-traceable Platinum RTD Mini-thermometer with handled penetration probe

High-accuracy NIST-traceable Platinum RTD Mini-thermometer with handled penetration probe

Product Type RTD Thermometer,Min temperature º F 58,Min temperature º C 50
EW-90111-12
In stock.
$261.00 USD/EACH

Qty:
EW-95001-32 Extech 4-Channel Datalogging Thermometer with SD Card Memory

Extech SDL200 4-Channel Datalogging Thermometer with SD Card Memory

Product Type Multi-Parameter Thermometers,Min temperature º F -328,Min temperature º C -200
EW-95001-32
In stock.
$349.99 USD/EACH

Qty:
EW-90111-10 High-accuracy NIST-traceable Platinum RTD Mini-thermometer with general purpose probe

High-accuracy NIST-traceable Platinum RTD Mini-thermometer with general purpose probe

Product Type RTD Thermometer,Min temperature º F 58,Min temperature º C 50
EW-90111-10
In stock.
$276.00 USD/EACH

Qty:
EW-37803-07 4-Channel Thermometer w/ SD Card Data Logging

4-Channel Thermometer w/ SD Card Data Logging

Product Type Multi-Parameter Thermometers,Min temperature º F -148,Min temperature º C -100
EW-37803-07
In stock.
$299.00 USD/EACH

Qty:
EW-93202-07 HART 1551A-9 Handheld Thermometer, Fixed RTD, –50 To 160C, 3/16x9

HART 1551A-9 Handheld Thermometer, Fixed RTD, –50 To 160C, 3/16x9

Product Type RTD Thermometer,Min temperature º F 58,Min temperature º C 50
EW-93202-07
Usually ships in 8 days.
$680.00 USD/EACH

Qty:
Representative photo only Oakton Temp 16 Precision RTD Thermometer w boot

Oakton Temp-16 Precision RTD Thermometer w/boot

Product Type RTD Thermometer,Min temperature º F 328,Min temperature º C 200
EW-91426-20
In stock.
$199.95 USD/EACH

Qty:
EW-08117-85 Integral Handle RTD Penetration Probe, 4"L

Integral Handle RTD Penetration Probe, 4"L

Product Type RTD Probe,Min temperature º F -58,Max temperature º F 932
EW-08117-85
In stock.
$123.00 USD/EACH

Qty:
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