Level and Pressure Instruments
Level Measurement In Liquids - Ultrasonic
Liquid Level Controllers
Lessons In Electric Circuits
Lessons In Electric Circuits : Volume I - DC
Lessons In Electric Circuits : Volume II - AC
Lessons In Electric Circuits : Volume III - Semiconductors
Lessons In Electric Circuits : Volume IV - Digital
Lessons In Electric Circuits : Volume V - Reference
Lessons In Electric Circuits : Volume VI - Experiments

Measurement And Instrumentation Principles
More About Control Systems
Motor Basics
MODBUS : Introduction to MODBUS
Mechanical Science
Mechanical Science Volume 1 of 2
Mechanical Science Volume 2 of 2

Oil and Gas Production Handbook

PACs : Understanding PACs (Programmable Automation Controllers) in Industrial Automation
PlantWeb : Best Total Value
Process Training Control System
Process / Industrial Instruments And Controls Handbook
Programmable Controllers Theory and Implementation
Proportional Integral Derivative (PID) Control
Pressure and Temperature Handbook
Process Control
Process Control Fundamentals
Process Control System
PLC
PLC Basics
PLC Glossary
PLC Laws
PLC Primer
DCS or PLC?
Programmable Logic Controllers 4th Edition
Programmable Controllers Theory and Implementation
Automating Manufacturing Systems with PLCs
Introduction to PLC Programming and Implementation - from relay logic to PLC logic

Safety Instrumentated Systems
Safety Lifecycle Management In The Process Industries
Sensors Basics
SCADA Primer

Terminology and Symbols in Control Engineering
Temperature
Temperature Controller Basics Handbook
Non Contact Temperature Measurement


Ultra-High-Speed Flash Microcontroller User’s Guide
Universal HART Commands

Ultrasonic Flowmeters
How Ultrasonic Flowmeters Work?
Ultrasonic Flowmeters in Waste Water Plants
Using Ultrasonic Flowmeters Irrigation Applications
In-Line Ultrasonic Flowmeter
Ultrasonic Doppler Flowmeters
GE Panametrics Dual Channel Ultrasonic Flow Meter

Valves (Also See Control Valves
Check Valve
Solenoid Valve Basics
Solenoid Valves Engineering Information
Vee-Ball Valves
Valves Solve Seawater Problems

375 Field Communicator

4 Biggest Mistakes In Instrumentation And How to Avoid Them