🎥 If you are looking for a stable, repeatable, and accurate sensor to provide temperature value for application monitoring, your best shot is Resistance Temperature Detector or RTD.
By watching this video, you’ll get the answer to these questions:
- What is an RTD sensor?
- How does an RTD sensor work?
- How to connect an RTD sensor to a PLC?
- What is the output signal of an RTD sensor?
- What are the three basic types of RTD sensors?
- What are the major components of an RTD sensor?
- What are the different wiring configurations for RTD sensors?
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💬 Video Summary:
RTD Sensor Working Principle
- An RTD is a passive sensing device that uses a resistive element whose resistance is associated with the function of the temperature.
RTD Sensing Elements
- Various metals are used to manufacture the RTD element. Typically, platinum is more often used.
Major Components of an RTD Sensor
- The sensing element is the temperature-sensing component found at the end tip of the temperature sensor to which the process temperature is applied.
- Next, it consists of lead wires that attach the sensing element to the read-out devices.
- Next, we want to discuss the sensor sheath, which houses most of the temperature sensor's components to shield them from the surroundings.
- It is advised to have a thermowell when integrating the RTD sensor into an application.
RTD Sensor Types
- Depending on the construction of the temperature sensing element, RTDs are divided into three basic types, which are the wire-wound, thin-film, and coiled element.
Wiring Configurations of RTD Sensors
- 2-Wire RTD Sensor
- 3-Wire RTD Sensor
- 4-Wire RTD Sensor
RTD Sensor Connection to PLC
- Proportional to the temperature range, the temperature transmitter takes the change in resistance of the RTD element, changes it into a voltage, and converts the measured voltage into a four to twenty-milliamp analog signal.
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⏰ TABLE OF CONTENTS ⏰
00:00 Introduction to RTD Sensor
00:37 Types of RTD Element
01:39 RTD Sensor Components
02:35 Types of RTD Sensor
02:46 Wire-Wound RTD Sensor
03:15 Thin-Film RTD Sensor
03:44 Coiled Element RTD Sensor
04:33 RTD Sensor Output Signal
05:06 2-Wire RTD Sensor Diagram
05:45 3-Wire RTD Sensor Diagram
06:56 4-Wire RTD Sensor Diagram
08:05 RTD Sensor Connection
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