Engineering ToolBox - Resources, Tools and Basic Information for Engineering and Design of Technical Applications!

Process Control Systems

Instrumentation, design and documentation of process control systems.

Control Valve Sizing

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

Measurements and Instrumentation

Measurement and instrumentation strategies.

Process Control Systems Documentation

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

Risk, Reliability and Safety

Risk, reliability and safety in process control systems.

Air - Humidity Measurement from Dry and Wet Bulb Temperature

Relative humidity in moist air can estimated by measuring the dry and wet bulb temperature.

BFD - Block Flow Diagram

A Block Flow Diagram is a schematic illustration of a major process.

Butterfly Valves - Sizing and Selection

Selecting and sizing butterfly valves for water applications.

CE Marking

Verifies that a product is designed to the appropriate standards according the European Machine Directive.

Chemicals Hazard Rating System

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

Control Valves - Sizing and Selection

Sizing control valves to match process requirements.

Electric Circuit Diagram - Drawing Template

Online shareable electric circuit diagram.

Flow Coefficient Cv vs. Flow Factor Kv

Comparing flow coefficients Cv to flow factors Kv.

Flowmeters - Turndown Ratios

Turndown ratio (Rangeability) can be used to compare flow measurement devices like orifices, venturi meters etc.

Fluid Flowmeters - Comparing Types

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

Gases - Control Valve Calculator

An online control valve - Cv - calculator for gases.

Hazardous Areas - European Classification Standard

European hazardous area classification with zones, protection types, temperature codes and codes.

Hazardous Areas - North America Classification

North American hazardous locations classification with classes, divisions and groups

HVAC Diagram - Online Drawing Tool

Draw HVAC diagrams online with this Google Drive drawing tool.

IP - Ingress Protection Ratings

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

ISA Instrumentation Codes used in Process Control Systems

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

Liquid, Steam and Gas - Flow Coefficients Cv

Calculate flow coefficients for the design of control valves - Imperial units.

P&ID - Piping and Instrumentation Diagram

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) is a schematic illustration of a system.

PFD - Process Flow Diagram - Online Drawing Tool

Draw Process Flow Diagrams with this online Google Docs drawing application.

Pressure

Introduction to pressure - online pressure units converter.

Process Control - Common Terms

Common terms used in the process control terminology.

Process Controllers - P, PI & PID

Proportional, integrating and derivative process controllers.

Process Instrumentation - ISA Codes

ISA process instrumentation codes - and combinations.

Signal Transmission - Standards

Standard signals used for transmission from sensor to controller.

Steam Control Valves - Calculate Flow Factor Kv

Designing steam control valves and their Kv values.

Temperature Sensors - Comparing Types

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

Thermocouples

Thermocouples - types, principles and temperature ranges.

Water Control Valves - Kv Calculation

Designing water process control valves and their Kv values.

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