BASICS OF ON/OFF CONTROLLER
Introduction In control theory, an on/off controller, also known as a hysteresis controller, is a feedback controller that switches abruptly between two states. These controllers...
Capacitance pressure transmitter
Capacitance pressure transmitter is a pressure measurement device which convert applied pressure into a current signal. Capacitive type pressure transmitter is differential pressure type sensor....
OPEN & CLOSED LEVEL MEASUREMENT
Introduction In industries level measurement is a crucial process.there are different types of storage tanks in this session we are gonna discuss about open &...
DRY & WET LEG LEVEL MEASUREMENT
Introduction There are so many level measuring techniques in present.one of the method is measuring level with the help of DP transmitter.There are 2 methods...
Resistance Temperature Detector ( RTD )
Resistance Temperature Detectors (RTD) are temperature measuring transducers used in industrial applications. RTDs are simple in construction with higher accuracy and repeatability and which are...
The pneumatic recorder
Introduction The pneumatically operated recorder is still used today, particularly in remote locations. It does not use electricity so it does not need any special...
PROGRAMMING LOGIC DEVICES (PLC)
Introduction A digitally operating electronic apparatus which uses a programming memory for the internal storage of instructions for implementing specific functions such as logic, sequencing,...
Basics of Thermistor – Advantages and Disadvantages
A thermistor is a semiconductor device formed from metal oxides. thermistors are used in many applications requiring information about process equipment for alarming and indication purposes....
Level Measurement Errors
INTRODUCTION There are many methods to measure level of a system or a tank (Direct and indirect). Let us discuss about the differential pressure level...
Basics of Relays
INTRODUCTION A relay is an electrically operated switch. Relays are a remote control electrical switch that can be switched using low current to control a high...