Process Control

Instrumentation and process control systems, design and documentation

Control Valves

Control Valve terminology, bodies, trim, flow characteristics, Cv and Kv sizing, noise, actuators and positioners


Documentation of process control systems - Block Flow Diagrams (BFD), Process Flow Diagrams (PFD), Piping and Instrumentation Diagrams (P&ID) and more

Fluid Flow Meters

Flow metering basics - Orifice, Venturi, Flow Nozzles, Pitot Tubes, Target, Variable Area, Positive Displacement, Turbine, Vortex, Electromagnetic, Ultrasonic Doppler, Ultrasonic Time-of-travel, Mass Coriolis, Mass Thermal, Weir V-notch, Flume Parshall and Sluice Gate flow meters and more

Risk, Reliability and Safety

Risk, Reliability and Safety in Process Control Systems

Temperature Measurement

Measurement of temperature - probes, sensors and transmitters

Air Humidity measured by Dry and Wet Bulb Temperature

Estimate moist air relative humidity by measuring dry and wet bulb temperature

BFD - Block Flow Diagram

Block Flow Diagram is a schematic illustration of a major process

CE Marking

The European Machine Directive

Chemicals and Hazard Rating Systems

The National Fire Protection Association (NFPA) hazard system for chemical materials

Control Valve Sizing Calculator - Gases

An online control valve - Cv - calculator for gases

Control Valves - Sizing and Selection

Size and select control valves to match process requirements

Dust Explosions - Critical Temperatures and Concentrations

Critical temperatures and concentration parameters for substances like coal, zinc, uranium and more

Electric Circuit Diagram - Template

Use Google Drive to make online shareable electric circuit diagrams

Flow Coefficient Cv versus Flow Factor Kv

Comparing flow coefficient Cv and flow factor Kv

Flow Coefficients - Cv - and Formulas for Liquids, Steam and Gases - Online Calculators

Flow coefficient and proper design of control valves - Imperial Units

Flowmeters and Turndown Ratio - Rangeability

Turndown ratio for flow measurement devices like orifices, venturi meter etc.

Hazardous Areas Classification - European Standard

European hazardous area classification in zones, protection types, temperature codes and codes

Hazardous Areas Classification - North America

North American hazardous locations classification in classes, divisions and groups

HVAC Diagram - Online Drawing

Draw HVAC diagrams - Online with the Google Drive drawing tool

IP - Ingress Protection Rating

IP - Ingress Protection rating is used to specify the environmental protection - or electrical enclosure - of electrical equipment

ISA Codes for Process Instrumentation

ISA process instrumentation codes - and combinations

ISA Instrumentation Codes in Process Control Systems

The ISA standards and symbols are important for the P&IDs and documents describing the process control system

P&ID - Piping and Instrumentation Diagram

P&ID is a schematic illustration of a functional relationship between piping, instrumentation and system components

P&ID Diagram - Online Drawing Tool

Draw P&ID diagrams online in the browser with Google Docs

PFD - Process Flow Diagram

The Process Flow Diagram - PFD, a schematic illustration of the system

PFD - Process Flow Diagram - Online Drawing Tool

Draw Process Flow Diagrams - Online with Google Docs


Introduction to pressure - psi and Pa - online pressure units converter

Process Control and Common Terms

Common terms in the process control terminology

Process Controllers

Proportional, integrating and derivative process controllers

Signal Transmission - Standard Systems

Standard signals used for transmission from sensor to controller

Sizing and Selection Butterfly Valves

Selecting and sizing butterfly valves for water applications

Steam Control Valves - Calculating Kv Values

Design of steam control valves and their Kv values

Temperature Sensors - Comparing Types

Comparing advantages and disadvantages of thermocouples, RTDs and thermistors temperature sensors


Thermocouples - types, principles and temperature ranges

Types of Fluid Flow Meters

An introduction to different types of fluid flowmeters - Orifices, Venturies, Nozzles, Rotameters, Pitot Tubes, Calorimetrics, Turbine, Vortex, Electromagnetic, Doppler, Ultrasonic, Thermal, Coriolis

Waste Water - Flow Capacity

In sewage piping and pumping systems the fluid flow rate must be kept within certain limits to avoid operating problems

Water Control Valves - Calculating Kv Values

Design of water process control valves and their Kv values

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