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RTDs

Resistance Temperature Detectors (RTDs) are a type of temperature sensor that operates on the principle that electrical resistance of a material changes with temperature. The sensing element in RTD temperature sensors is typically made from a pure material, most commonly platinum, due to its linear resistance-temperature characteristics and its high positive temperature coefficient, meaning that its resistance increases with temperature.

There are two main types of RTDs: wire-wound and thin-film. Wire-wound RTDs consist of a fine wire wrapped around a ceramic or glass core. Thin-film RTDs, on the other hand, consist of a very thin layer (thin film) of platinum deposited on a ceramic substrate, forming a resistance wire in an electrical circuit pattern. Thin-film elements are generally more robust and less susceptible to mechanical strain than their wire-wound counterparts, and their manufacturing process allows for mass production, which makes them more economical.

RTDs have a wide temperature range and offer high accuracy for temperature measurements, which makes them ideal for a variety of industrial applications. They are, however, more expensive and complex to use than other types of temperature sensors, such as thermocouples.

Products

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$136.40
ACI CONFIGNIST88 1,000 Ohm (Two Wires) RTD, Room (R2), NIST Cert
$202.40
ACI CONFIGNIST85 1,000 Ohm (Two Wires) RTD, Immersion, Welded Well, 4", NEMA 3R Enclosure, NIST Cert
$202.40
ACI CONFIGNIST84 1,000 Ohm (Two Wires) RTD, Immersion, Welded Well, 6", NEMA 3R Enclosure, NIST Cert
$261.80
ACI CONFIGNIST76 100 Ohm RTD, 2" Freezer Probe 316SS, 10', NIST Cert
$132.00
ACI CONFIGNIST58 1,000 Ohm (Two Wires) RTD, Probe Only, 12", NIST Cert
$320.32
ACI CONFIGNIST56 1,000 Ohm (Two Wires) RTD, Flexible Cable Averaging, 8', No Box, NIST Cert
$387.20
ACI CONFIGNIST5 1,000 Ohm (Two Wires) RTD, Rigid Probe Averaging, 18", Galvanized Enclosure, NIST Cert
$179.61
ACI CONFIGNIST49 100 Ohm (Two Wires) RTD, Immersion, Welded Well, 6", NEMA 3R Enclosure, NIST Cert
$181.50
ACI CONFIGNIST47 1,000 Ohm (Two Wires) RTD, Immersion, 2.5", Glavanized Enclosure, NIST Cert
$133.10
ACI CONFIGNIST41 1,000 Ohm Nickel RTD, Wall Plate, Stainless Steel, NIST Cert
$147.40
ACI CONFIGNIST40 1,000 Ohm (Two Wires) RTD, Wall Plate, Stainless Steel, NIST Cert
$202.40
ACI CONFIGNIST39 100 Ohm (Three Wires) RTD, Immersion, 2.5", NEMA 3R Enclosure, NIST Cert