Pt100 Wireless RTD Transmitter

3 and 4 wire Pt100 Input. Free Software For Realtime Display, Multi-Channel Chart Recording and Data Logging, with Export to Spreadsheets. Low Power Operation and Sleep Mode Allows for Long Battery Life. Each Wireless RTD Connector Transmits Process Temperature, Ambient Temperature, Signal Strength and Battery Status in Real Time. REC1 and REC2 "Plug and Play" USB Receivers Work with 48 Wireless Transmitters. REC2 USB Receiver has a Single Channel Analog Output. REC4 USB Receiver has a Four Channel Analog Output. More

Item# (PN): UWRTD Shipping and Payment

Omega’s wireless RTD Pt100 connector Series features standalone, compact, battery powered RTD Pt100 connectors that transmit their readings back to a host receiver up to 120 m (400') away. Each unit can be programmed in the field to interface directly with a 3 or 4-wire 100Ω Pt100 Platinum RTD sensor with 0.00385 (European) or 0.00392 (American) curves. When activated the connector will transmit readings continuously at pre-set time interval that was programmed by the user during the initial setup. Each unit measures and transmits: Pt100 input reading, connector ambient temperature, RF signal strength and battery condition to the host and is displayed on the PC screen in real time using the provided software.

SPECIFICATIONS:

Available Types: 100Ω (Pt100)
RTD Measurement Range:
0.00385 (European): -200 to 850°C (-328 to 1562°F)
0.00392 (American): -100 to 457°C (-148 to 854°F)
RTD Measurement Accuracy: ±0.5°C (1°F)
RTD Measurement Resolution: 1°C/1°F
Operating Environment: -10 to 70°C (14 to 158°F)
RTD Connection: Series "T" receptacle. Use Model TA3F mating connector. One Included
Computer Interface: USB (one interface cable included with receiver)
Transmit Sample Rate: Programmable from 1 sample/minute to 1 sample/every 5 seconds Radio Frequency (RF) Transceiver
Carrier: ISM 2.4 GHz, direct sequence spread spectrum, license free worldwide (2.450 to 2.490 GHz -12 channels)
RF Output Power:
UWRTD-2: 10dBm (10 mW)
Range of RF Link:
UWRTD-2: Up to 120 m (400') outdoorline of sight. Up to 40 m (130') indoor/urban. RF Data Packet
Standard: IEEE 802.15.4, open communication architecture
Software (Included Free): Requires Windows 98, ME, 2000, XP, or Vista operating system
UWRTD-2 internal battery: one 3.6V lithium battery type AA, capacity 2.4Ah (included)
Battery life (typical): 1 year at 1sample / minute sampling and 25°C ambient temperature.
UWRTD-2-NEMA internal battery: one 3.6 V type C lithium battery (supplied)
Battery life (typical): 3 years at 1 sample / minute sampling and 25°C ambient temperature.
Data Transmitted to Host: RTD reading, connector ambient reading, RF transmit strengthand battery condition

Download

Datasheet - UWRTD-2 (EN) (pdf, 1000.3 kB)

Datasheet - UWRTD-2-NEMA (EN) (pdf, 181.1 kB)

User manual (EN) (pdf, 2.5 MB)

Quick start (EN) (pdf, 1.2 MB)

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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