Temperature Transmitters, temperature sensors,RTD, PT100
You are here: Home » News » Temperature Transmitters, temperature sensors,RTD, PT100

Temperature Transmitters, temperature sensors,RTD, PT100

Views: 30     Author: Site Editor     Publish Time: 2021-01-15      Origin: Site

facebook sharing button
twitter sharing button
line sharing button
wechat sharing button
linkedin sharing button
pinterest sharing button
whatsapp sharing button
sharethis sharing button

Temperature Transmitters

A temperature transmitter is a device that connects to a temperature sensor to transmit the signal elsewhere for monitoring and control purposes. Typically, the temperature sensor is either an RTD(PT100 or PT1000), thermistor or thermocouple type sensor and will interface with a PLC, DCS, data logger or display hardware.

The temperature transmitter's role is to isolate the temperature signal, filter any EMC noise, amplify and convert the temperature sensor's signal to a 4-20mA or 0-10V DC range for further use.

4-20ma temperature transmitters are common in manufacturing as the majority of industrial equipment communicates via this signal range. The transmitted temperature signal can be scaled inside the temperature transmitter to accommodate the needs of the application, e.g. the 4mA can be used to represent -17.7°C (0° Fahrenheit) and the highest value in the range (20mA) can be used to represent 37.7° C (100° Fahrenheit)


Input signals types for a temperature transmitter

An RTD (Resistance Temperature Detector or Resistance Temperature Device) is one of the most prevalent temperature sensors used in industry today. Also commonly referred to as PT100, its resulting popularity is due to its accuracy and response at temperatures between -300 to + 600 ° F.

The RTD sensor comprises of a resistor that changes value with temperature. The most common RTD by far is the PT100 385. This element measures 100 Ohms @ 0 degrees C (32 °F) and 138.5 Ohms @ 100 °C (212.0 °F).

Below RTD Temperature Table (RTD Temperature Vs. Resistance Table) for reviews.

PT100(RTD) Temperature Table-001

PT100(RTD) Temperature Table-002

A thermocouple sensor has a pair of dissimilar metal wires joined at one end. The junction produces a low level voltage proportional to the difference in temperature between the open and closed ends.



Product Inquire
ORR Sensor Co., Ltd. 
Total Sensor Solution




  Add : 6# Building, No. 285 Rongxing Road, Shanghai, 201613
   Phone : +86-18917497750
   E-mail : orr@orrsensor.com
   Skype : tanxi21
Copyright   2023 ORR Sensor Co., Ltd.