Wiring method of temperature transmitter
Temperature sensors - or thermistors, as they are often called are among the most commonly used sensors in the automation world. Thermistors work by measuring temperature changes and translating these changes into a signal or voltage that can be interpreted by a Temperature Controller. They are often used in many applications, ranging from air conditioning systems to industrial processes.
In an industrial setting, temperature sensors are often used to monitor temperatures in hazardous or extreme environments. Some applications require the sensors to withstand high temperatures and pressure, while others require them to be able to detect the slightest variations in temperature.
When it comes to connecting a temperature sensor to a Temperature Controller, there are a few things to consider. First, it is important to determine the type of sensor that is most suitable for the application. There are two basic types of temperature sensors - thermocouples and RTD's (Resistance Temperature Detectors).
Thermocouples use two wires that are joined together at one end and exposed to the object or environment being monitored. The other end of the wires is attached to a temperature controller that interprets the different temperature readings. The advantage of thermocouples is that they are relatively cheap and easy to install. However, they are also not as accurate as RTDs and the readings may not be consistent with the environment.
RTDs, on the other hand, are more accurate and deliver more consistent temperature readings. It is also important to determine the type of wiring that is needed for the application as there are three common types of RTD wiring: three-wire, two-wire, and four-wire. Three-wire RTDs use three separate wires, while two-wire RTDs use two separate wires. Finally, four-wire RTDs use one long wire with two sensors at the ends to measure temperature at a distance.
Once the type of sensor has been determined, the wiring for the Temperature Controller must be configured. All Temperature Controllers need to be connected to a power source, and the number of wires used will depend on the type of sensor being used. The Temperature Controller needs to be connected to the sensor’s output, and a signal cable needs to be connected between the Temperature Controller and the output device.
It is also important to be aware of the type of environment that the Temperature Controller is going to be used in. If the application is in a moist environment, the wires should be protected from moisture by insulation or a coating. Additionally, if the Temperature Controller will be exposed to electromagnetic interference, then an isolation box should be used to protect the signal wires.
Finally, it is also important to consider the type of data that the Temperature Controller will be sending out. Most Temperature Controllers can transmit data via a digital protocol, such as RS232, or analog signal. It is important to ensure that the Temperature Controller is compatible with the system that it is being connected to.
Connecting a temperature sensor to a Temperature Controller can seem like an intimidating process. However, with a little knowledge and the right tools, it can be done easily. By following the tips provided above, anyone can successfully connect a temperature sensor to a Temperature Controller and enjoy the benefits of a more accurate and consistent temperature reading.