0
Generally process control devices use analog signal. Normally in an industrial automation setup, 0-20 mA (mili amp) or 4-20 mA or 0- 10 Volts are used. These signals are used for both providing control output and to provide feed back signal (say to a PLC (programmable logic controller) or DCS)
Example for a control out put is a motorized damper operated by 4 - 20 mA signal. PLC provides 4-20 ma signal. Example of a feed back signal is 4 - 20 mA signal from temperature transmitter, measuring a liquid temperature to PLC as input.
What else can I help you with?
What are some electromagnetic devices?
electromagnetic devices are devices that work on electricity but are magnetic
What method of signal transmission uses radio waves to carry signals?
The analog method of signal transmission uses radio waves to carry signals. Digital transmission involves the use of satellites to transmit signals.
Do digital signals control output?
No, some electronic devices use analog signals as their input/output others may use digital signals as their input/output; some equipment uses an analog signal as the input and outputs a digital signal. Be sure to use the correct signal and signal strength otherwise you may damage your electronic device.
Why must sound card and video on a PC be converted from analog to digital?
Primarily because digital systems are more accurate. Additionally, digital technology is replacing older systems with modern devices because digital devices are often much smaller, and require less maintenance.
Devices that a dentist uses run by fluid power?
Andy hess likes men :]
What telecommunications hardware is needed to convert digital signals to anolog signals?
A Demodulator (MODEM)
How dows bluetooth work?
Bluetooth uses radio-frequency signals to communicate between devices. It uses these signals because the range that it uses requires a very modest amount of power. To avoid connecting with another Bluetooth device, the signal varies between 2.402 gigahertz and 2.48 gigahertz. The signal changes 1600 times every second and the devices that are communicating change the range in unison to prevent unwanted reception from other devices.
What are some electromagnetic devices?
electromagnetic devices are devices that work on electricity but are magnetic
Why do Americans call cell phones cell phones?
They also call it cellular phones, mobile phones, mobile devices, wireless devices. They call it a cell phone because it uses cellular signals.
How does wireless networking technology utilize radio waves to transport internet signals?
Wireless networking technology uses radio waves to transmit data between devices. These radio waves carry internet signals through the air, allowing devices to connect to the internet without the need for physical cables.
How can a microwave blocker be used to prevent unwanted signals from interfering with electronic devices?
A microwave blocker can be used to prevent unwanted signals from interfering with electronic devices by absorbing or reflecting the microwave signals, thereby reducing their impact on the electronic devices. This helps to maintain the proper functioning of the devices without disruption from external interference.
What devices uses radio waves?
Radio waves are used to help transmit signals between two devices.Some devices which use radio waves are:RadiosTelevisionsMobile (cell) phonesCordless telephonesNavigational devices (such as GPS and satellite tracking)RadarRadio-tuned clocks and watchesRadio telescopes
Why do you have to turn off your cellphones and electronic devices before flight take off?
I believe the signals from the electronic devices could interfere with cockpit and/or tower electronics/signals.
Which types of signals are carried over a DSL cable?
DSL is carried over a phone line. Yet it caries digital signals. the telephone company has to limit the bandwidth of the analog voice on the lines. So DSL is able to use the unused portion of the bandwidth to transmit digital data. hope that helps -------------------------------------------------------------------------------------------------------- According to Cisco : Network devices link together using a variety of connections: * Copper cabling - Uses electrical signals to transmit data between devices * Fiber-optic cabling - Uses glass or plastic wire, also called fiber, to carry information as light pulses * Wireless connection - Uses radio signals, infrared technology (laser), or satellite transmissions. so your answer would be electrical signals.
What is the process called when communications protocol determines how receiving devices acknowledge signals from sending devices?
A dedicated link between devices
All electronic devices transmit information using?
Signals are what most all electronic devices use to transmit signals. (Note: If you want the answers to the review, then read the chapter, bro.)
Converts digital signals into analog signals for use with ISDN phones and other analog devices?
Terminal Adapter
