Remote I/O, or distributed I/O, offers several advantages over the traditional local I/O found on a Programmable Logic Controller (PLC). First, it allows you to locate the I/O modules close to the process that is being monitored or controlled. This greatly improves noise immunity, as the weak sensor signals are converted to digital signals before being transmitted long distances through a noisy plant environment. OMEGA universal remote I/O modules use a simple 2-wire RS485 link using MODBUS RTU/ASCII protocol, which is supported by most programmable logic controllers. A second advantage is that remote I/O greatly reduces the wiring at the main control panel, saving time and money when repairs and upgrades are necessary. Adding additional sensors and control signals is as easy as connecting to the already installed RS485 link and modifying the PLC program to utilize the new I/O. In addition, remote I/O allows you to expand your process control system beyond the local I/O capabilities of your PLC. You can add thermocouple, RTD, pressure, and flow sensors to a PLC that doesn’t support these types of inputs. With remote I/O, your process application is no longer dependent on your controller choice.
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FDT-21W ultrasonic flowmeter is designed to measure the fluid velocity of liquid in a full/closed pipe. It is a measurement system which is both easy to install and use. The FDT-21W operates according to the difference in the transit time of flight measured, and determines the flow velocity by measuring the travel time of a pulse from one transducer to the next. Flow in the same direction takes less time to travel to the second transducer than does flow in the opposite direction. Electroacoustic transducers receive and emit brief ultrasonic pulses through the liquid of the pipe. Transducers are vertically placed at both sides of the measured pipe. Sensors are placed on the pipe and fastened by means of a clamp. The display will quickly show the flow velocity. The FDT-21W can be used for metallic, plastic and rubber tubes.
Sierra’s InnovaSonic® 210 portable ultrasonic flow meter makes field-portability its primary feature. The 210 replaces keyboards and cabling with a Bluetooth-enabled Android tablet PC to control data acquisition and processing. Users can browse the collected data, perform statistical analysis, display graphs and perform other functions. With high accuracy, the 210 is ideal for precisely measuring a wide range of liquid flows and temperatures. While principally designed for clean liquids, it operates effectively with the minimal quantity of air bubbles or suspended solids found in most industrial applications.
The HI 6500 series are EtherNet/IP® enabled weight processors with a Rockwell Add-On-Profile (AOP). They have a big, bright multi-channel display and deliver fast, high-resolution weight readings. They also feature alternative communication options. Weight processors are used as front ends to control systems or standalone for all types of general weighing applications. Operating blind or with a display, they measure, condition and communicate weight without any need to control.
Industrial manufacturer Eaton is making use of the easy800 control relay even easier and more convenient, by launching the new easyRemote display app. Available on the Android operating system (for versions 2.2-4), the app enables users to display all the text and functions of the easy800 control relay via a standard smartphone and operate it remotely. Communication between the smartphone and the control relay is via Bluetooth. The app enables users to communicate with the controller outside of the working area, thus not only increasing general user-friendliness but also enhancing safety. The new easyRemote display app can be downloaded for free at: http://bit.ly/easyRemoteApp.