Wireless sensors are standard measurement tools equipped with a transmitter that converts signals from process control instruments and transmits them via radio waves. These radio signals are interpreted by a receiver and converted by computer software into a specific desired output, such as an analog current or data analysis.
1.What are the main advantages of wireless sensors?
1.1Safety
Wireless instrumentation can be used in environments where access is difficult due to extreme conditions (such as high temperature, high pH, and high pressure). Wireless sensors allow operators to continuously monitor processes in hazardous environments and report data to operators in a control room at a safe distance. Wireless measurement is also suitable for acquiring data from inaccessible locations.
1.2Convenience
Wireless sensors can be used to form a web/network, allowing engineers to monitor multiple locations from a single site, enabling centralized plant control. Furthermore, many wireless sensors can create unique web pages, allowing users around the world to access the latest data anytime, anywhere.
1.3Cost Savings
Wireless process control eliminates the need for extension cables, conduit, and other expensive accessories, reducing plant monitoring and operating costs.
All wireless products are expanded based on the capabilities of traditional wired sensors and controllers. It has a rich product line, including a wide range of wireless meters and transmitters with built-in displays, alarms, and controllable outputs. Wireless meters will bring users a convenient experience and excellent performance.
2.Selecting Wireless Sensors
There are many factors to consider when selecting wireless measurement instruments.
Measurement Type: Understanding the measurement target is crucial. Wireless transmitters that incorporate wireless process measurement and control capabilities typically have specific capabilities. Their sensors are designed to sense physical quantities such as temperature, pressure, and flow, so they must be selected accordingly.
Accuracy and Response Time: How accurately do measurements need to be measured? How often do measurement results need to be updated? Most wireless sensors offer the same accuracy as their wired counterparts; however, to conserve power, readings are typically transmitted only every few seconds. If instantaneous measurements are required, this must be considered when selecting a wireless transmitter; some models may not offer the required response time.
Range: Wireless sensors have varying ranges. Some are suitable for short-range applications within a few hundred feet indoors, while others can transmit data to receivers several miles away. However, regardless of a sensor's range, the range of its wireless signal is always limited by obstructions. Transmitting signals through machinery, walls, and buildings reduces signal strength and range. Therefore, a transmitter's indoor range is typically shorter than its broadcast range in open areas.
