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Pressure Measurement

Difference between Pilot-operated & Self-compensating pressure regulators

Introduction Gases used in industrial processing, such as oxygen, nitrogen, hydrogen, and propane, are stored...
Communication

HART ( Highway Addressable Remote Transducer) Communication Protocol

What is HART protocol? HART (Highway Addressable Remote Transducer) Protocol is the global standard for...
Instrumentation

Proximity detection using capacitance & inductive sensors

Introduction There are two basic ways to detect object presence; contact and proximity. Contact implies...
Interview Questions

Instrumentation interview questions

What is Process control? A process control is continuous changing of a process variable to...
SCADA

Introduction to SCADA

What is SCADA? SCADA stands for Supervisory Control and Data Acquisition. SCADA is a control...
Instrumentation

Basics of Pneumatic instruments

Introduction A pneumatic system is a system that uses compressed air to transmit and control...
PLC

Introduction to PLC hardware- part 2

Introduction Earlier we discussed about the basics of PLC hardware .This is the continuation of...
Communication

RS-232 C interface and modems

RS-232 C is a standard connection between a modem and the devices, electrical specifications, data exchange...
PLC

Introduction to PLC hardware part 1

INTRODUCTION Many PLC configurations are available, even from a single vendor. But, in each of...
Level Measurement

Basics of Hydrostatic level measurement

What is meant by hydrostatics? Hydrostatic pressure sensors are used for the measurement of level...
Temperature Measurement

Difference between wire wound & film RTD’s

Introduction An RTD is a device which contains an electrical resistance source (referred to as...
Temperature Measurement

WHAT IS RESISTANCE THERMOMETERS ?

Introduction Resistance thermometers is also called RTD (resistance temperature detector). It operates on the principle...
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