Bolt-On Pt100 RTD Sensor with Aluminum Flag Housing
Updated Pt100 sensor housing design for improved strain relief. Standard hole for #3 and #4 screw. Options available for #5, #6, #8 screw. Small aluminum housing allows for installation on most flat surfaces. Pt100 sensor can be bolted or cemented into place. Pt100 Class A or Class B RTD element conforming to IEC 60751. Temp range -60 to 230°C or -60 to 450°C for -HT version. Resistance value: Pt100 Ω or Pt1000 Ω. Connection options: mini 3-pin connector, standard 3-pin connector, stripped ends, and spade lugs. More
Item# (PN): RTD-831-SERIES Shipping and Payment
Omega's RTD-831 series 3-wire RTD Pt100 (Pt1000) sensor features an improved barrel and flag design on the aluminum housing which gives improved durability. The flag is machined to accept a #3, #4, #5, #6, #8 screw for easy installation on flat surfaces by either being bolted or cemented onto the surface. This is available in 100 Ω (Pt100) or 1000 Ω (Pt1000) Platinum RTD element and is available in a high temperature (-HT) version.
Pt100 connection options available are miniature 3-pin connector (-MTP), standard 3-pin connector (-OTP), stripped ends (-SE), and spade lugs (-LUG). For other connector types, please contact Sales. Applications for this type of sensor include product performance testing climate control/HVAC monitoring and control of processes hot plate equipment, and process pipes.
Online available models have a standard bolt hole #3, #4. Configurator may not contain all available options. If you do not find what you are looking for, please contact us.
Complete informations can be found in the spec sheet (PDF), see the "Download" section.
RTD Pt100 vs Thermocouple
It is not practical to compare RTDs (Pt100 and others) and thermocouples generally. However, if we compare their performance in terms of specific criteria, we can see which is best suited for specific applications. Thermocouples are best for working at high temperatures. New manufacturing techniques have improved the measurement range of RTD probes, but more than 90% of RTDs are designed for temperatures below 400°C.
In contrast, some thermocouples can be used at up to 2500°C. Thermocouples are generally cheaper than RTDs...
Origin Story of the RTD / Pt100
The same year (1821) that Thomas Seebeck made his discovery about thermoelectricity (Seebeck effect, see thermocouples), Sir Humphrey Davy announced that the resistivity of metals showed a marked temperature dependence. Fifty years later, Sir William Siemens proffered the use of platinum as the element in a resistance thermometer. His choice proved most propitious, as platinum is used to this day as the primary element in all high-accuracy resistance thermometers, Pt100, Pt1000 etc.
In fact, the Platinum Resistance Temperature Detector, or RTD Pt100, is used today as an interpolation standard from the oxygen point (-182.96°C) to the antimony point (630.74°C)...
What are RTD temperature sensors?
RTDs or Resistance Temperature Detectors, are temperature sensors that contain a resistor that changes resistance value as its temperature changes. The most popular RTD is the Pt100. They have been used for many years to measure temperature in laboratory and industrial processes, and have developed a reputation for accuracy, repeatability, and stability.
Most RTD elements consist of a length of fine coiled wire wrapped around a ceramic or glass core. The element is usually quite fragile, so it is often placed inside a sheathed probe to protect it...
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