Go to Machine Design Home Go to GlobalSpec.com Home
Find:      Advanced >>
Toolbar   The Engineering Toolbar
The Ultimate Resource for Engineering and Technical Research. (Learn More)

Universal Process Controllers

Find Universal Process Controllers Manufacturers

About Universal Process Controllers

Universal process controllers monitor various parameters and initiate controller functions based on measurements. They receive sensor inputs, provide control functions, and output control signals. Universal process controllers use several control types. Limit controls protect personnel and equipment by interrupting power through a load circuit when a variable exceeds or falls below a set point. Advanced controls use non-linear control strategies such as adaptive gain, dead-time compensation, and feed-forward control. Linear controls use proportional, integral and derivative (PID) control; proportional and integral (PI) control; proportional and derivative (PD) control; or proportional (P) control. PID control uses an intelligent input/output (I/O) module or program instruction for automatic closed-loop operation. PI control integrates error signaling for steady-state or offset errors. By contrast, PD control differentiates error signals to derive the rate of change. PD control increases the speed of controller response, but can be noisy and decrease system stability. 


Products & Services Related to Universal Process Controllers

Batch Controllers
Batch controllers maintain the correct size of a discrete batch of process material, such as the volume of a liquid. They are often interfaced with sensors such as load cells, or with volumetric flow meters.
Humidity Controllers
Humidity controllers monitor and maintain proper humidity levels in environmental test applications, food storage areas, and electronic equipment rooms.
Level Controllers
Level controllers monitor, regulate, and control liquid or solid levels in a process.
Pump Controllers
Pump controllers monitor flow and/or level variables, and control a pump accordingly to maintain the desired levels. Pump control can include simply turning a pump on and off, or more advanced controls for pump speed, output pressure, etc.
Specialty Industrial Process Controllers
Specialty industrial process controllers are used in unlisted, specialized or proprietary applications.
Temperature Controllers
Temperature controllers accept inputs from temperature sensors or thermometers, and then output a control signal to keep the temperature at the desired level.
Web Tension Indicators
Web tension indicators measure and report tension parameters in web or other flat-sheet production processes. Some types of web tension indicators have control functionality as well.

Engineering Web: Universal Process Controllers - Machine Design

Pages: 1 - 3 of 46

Temperature and Process Controllers | Machine Design
Temperature and Process Controllers February 17, 2005
Temperature/Process Controllers | Machine Design
Temperature/Process Controllers April 27, 2006
PID Controllers | Machine Design
PID Controllers September 1, 2005 Staff
More >>



©1999-2009 GlobalSpec. All rights reserved.
Use of GlobalSpec is governed by these Terms of Use and Privacy Policy.

Penton Media, Inc. Site Use Agreement :: Privacy Policy
Home :: Article Archive :: CD Library :: CAD Library :: Site Map