Free Engineering Tools
Instrumentation Tools
Decoders, reference charts and tuning tools for instrumentation and control engineers. Each tool follows the relevant standard and explains every result.
10sections
87live tools
Advertisement
Tool Sections
4 toolsInstrument Tag DecoderDecode ISA 5.1 instrument tags and look up every identification letter.6 toolsIP, NEMA and Ex Rating DecoderDecode IP codes, NEMA enclosure types, ATEX and IECEx Ex markings and hazardous area zones.6 toolsWire and Cable Color CodesWire colour codes for power, control panels, thermocouples and RTDs by standard.9 toolsPID Tuning ToolsPID tuning calculators, PID form converter and an online PID loop simulator.6 toolsP&ID SymbolsSearchable P&ID symbols for instruments, lines, valves and flow elements.5 toolsPipe and Flange ChartsPipe schedules, ASME B16.5 flange dimensions and pressure ratings.5 toolsThread Size ChartsNPT, BSP and metric thread sizes and a thread identifier for instrument fittings.11 toolsCommunication ProtocolsModbus address, float and CRC tools, RTU timing, RS485 rules and HART commands.17 toolsTroubleshooting GuidesInteractive fault finders for transmitters, flowmeters, valves and loops.18 toolsPractice TestsInstrumentation quizzes with instant scores and explained answers.
All Instrumentation Tools
Nothing matches your search. Try another word or pick All.
Instrument Tag Decoder4
Instrument Tag DecoderInstrument Tag Decoder (ISA 5.1)ISA 5.1, P&ID tagsInstrument Tag DecoderISA 5.1 Instrument Identification LettersA to Z, First lettersInstrument Tag DecoderInstrument Tag Builder (ISA 5.1)First letter, ModifierInstrument Tag DecoderCommon Instrument Tags List (ISA 5.1 Examples)81 tags, Searchable
IP, NEMA and Ex Rating Decoder6
IP, NEMA and Ex Rating DecoderIP Rating Decoder (IEC 60529)IEC 60529, Dust protectionIP, NEMA and Ex Rating DecoderNEMA Enclosure Types and IP EquivalentsNEMA 250, NEMA 4XIP, NEMA and Ex Rating DecoderEx Marking Decoder (ATEX and IECEx)ATEX, IECExIP, NEMA and Ex Rating DecoderHazardous Area Zones, EPL and ATEX CategoriesZone 0, 1, 2, Zone 20, 21, 22IP, NEMA and Ex Rating DecoderIK Impact Rating Decoder (IEC 62262)IK00 to IK10, Impact energy (J)IP, NEMA and Ex Rating DecoderEx Equipment Selector: Zone, EPL, Gas Group and T ClassZone to EPL, ATEX category
Wire and Cable Color Codes6
Wire and Cable Color CodesElectrical Wire Color Codes (IEC, India, UK, US)IEC 60445, India R Y BWire and Cable Color CodesControl Panel Wiring Color Code (IEC 60204-1 and NFPA 79)IEC 60204-1, NFPA 79Wire and Cable Color CodesThermocouple Color Codes (IEC and ANSI)IEC 60584-3, ANSI MC96.1Wire and Cable Color CodesRTD Wire Color Code and Instrument Cable ColoursIEC 60751, Pt100 3 wireWire and Cable Color CodesEthernet RJ45 Color Code: T568A and T568BT568A, T568BWire and Cable Color CodesFiber Optic Color Code (TIA-598) and Jacket ColoursFibres 1 to 12, Buffer tubes
PID Tuning Tools9
PID Tuning ToolsStep Test FOPDT Model CalculatorProcess gain K, Dead time θPID Tuning ToolsSIMC PID Tuning Calculator (Skogestad)Skogestad rules, Self regulatingPID Tuning ToolsPID Units Converter: Gain, PB, Repeats and KiGain ↔ PB, Ti ↔ repeats/minPID Tuning ToolsZiegler–Nichols PID Tuning CalculatorClosed loop Ku, Pu, Open loop step testPID Tuning ToolsCohen–Coon PID Tuning CalculatorFOPDT model, Dead timePID Tuning ToolsLambda and IMC PID Tuning CalculatorLambda tuning, IMC rulesPID Tuning ToolsPID Form Converter (Ideal, Series, Parallel)Ideal (ISA), Series (interacting)PID Tuning ToolsProportional Band and Reset Rate ConverterGain ↔ PB, Minutes per repeatPID Tuning ToolsPID Loop SimulatorFOPDT process, Live plot
P&ID Symbols6
P&ID SymbolsP&ID Instrument Symbols (ISA 5.1)11 symbols, With meaningsP&ID SymbolsP&ID Line Symbols8 symbols, With meaningsP&ID SymbolsP&ID Valve Symbols16 symbols, With meaningsP&ID SymbolsP&ID Flow Element and Equipment Symbols8 symbols, With meaningsP&ID SymbolsP&ID Equipment Symbols with Meanings16 symbols, With meaningsP&ID SymbolsP&ID Abbreviations List with Meanings72 abbreviations, Searchable
Advertisement
Pipe and Flange Charts5
Pipe and Flange ChartsInstrument Tubing Pressure Rating CalculatorBarlow formula, Inch and metric tubePipe and Flange ChartsPipe Volume and Weight CalculatorInternal volume, Steel weightPipe and Flange ChartsPipe Schedule Chart (ASME B36.10M)Sch 40 and 80, STD, XS, XXSPipe and Flange ChartsASME B16.5 Flange Dimensions Chart (Class 150 and 300)Class 150, Class 300Pipe and Flange ChartsFlange Pressure Rating Chart (ASME B16.5, A105)Class 150 to 2500, Interpolation
Thread Size Charts5
Thread Size ChartsUNC and UNF Thread Chart with Tap DrillsUNC coarse, UNF fineThread Size ChartsNPT Thread Size Chart (ASME B1.20.1)1/2" NPT, TPIThread Size ChartsBSP Thread Size Chart (BSPP and BSPT)G 1/2, R 1/2Thread Size ChartsMetric Thread Chart and Tap Drill SizesCoarse pitch, Fine pitchThread Size ChartsPipe Thread Identifier (NPT, BSP or Metric)Measure OD, Count TPI
Communication Protocols11
Communication ProtocolsModbus Register Address Calculator40001 to 0, Function codesCommunication ProtocolsModbus Float Converter (IEEE 754, Two Registers)IEEE 754, ABCD, CDABCommunication ProtocolsModbus RTU CRC 16 CalculatorCRC 16/MODBUS, Low byte firstCommunication ProtocolsModbus RTU Frame DecoderRequest and response, Exception codesCommunication ProtocolsModbus RTU Timing and Poll Time CalculatorCharacter time, t3.5 intervalCommunication ProtocolsRS485 Cable Length and Baud Rate GuideLength vs speed, Unit loadsCommunication ProtocolsHART Command List and LookupUniversal commands, Common practiceCommunication ProtocolsIndustrial Communication Protocols ComparisonHART and Modbus, Profibus and FFCommunication ProtocolsIP Subnet Calculator for Control NetworksCIDR prefix, Host rangeCommunication ProtocolsFoundation Fieldbus H1 Segment CalculatorDevice current, Voltage dropCommunication ProtocolsHex, Decimal, Binary and ASCII ConverterHex ↔ decimal, Signed 16 bit
Troubleshooting Guides17
Troubleshooting GuidesPressure Transmitter Fault FinderNo output, Stuck readingTroubleshooting GuidesDP Flow Transmitter Fault FinderReads high or low, No flow shownTroubleshooting GuidesMagnetic Flowmeter Fault FinderEmpty pipe alarm, Noisy readingTroubleshooting GuidesLevel Transmitter Fault FinderRadar level, DP levelTroubleshooting GuidesThermocouple and RTD Fault FinderOpen sensor, Reads high or lowTroubleshooting GuidesControl Valve Fault FinderNot moving, HuntingTroubleshooting Guides4 to 20 mA Loop Fault Finder0 mA, Low currentTroubleshooting GuidespH Sensor Fault FinderLow slope, Offset errorTroubleshooting GuidesCoriolis Flowmeter Fault FinderFlow at zero, Noisy flowTroubleshooting GuidesVortex Flowmeter Fault FinderZero at low flow, False flowTroubleshooting GuidesUltrasonic Flowmeter Fault FinderNo signal, Wrong readingTroubleshooting GuidesGuided Wave Radar Fault FinderLost echo, End of probeTroubleshooting GuidesGas Detector Fault FinderFails bump test, Zero driftTroubleshooting GuidesESD and On Off Valve Fault FinderFails to close, Slow strokeTroubleshooting GuidesPLC Analog Input Fault FinderWrong scaling, OverrangeTroubleshooting GuidesModbus Communication Fault FinderNo response, CRC errorsTroubleshooting GuidesVFD Fault Finder (Vendor Neutral)Overcurrent, Overvoltage
Advertisement
Practice Tests18
Practice TestsPressure Measurement Quiz15 questions, Instant scorePractice TestsFlow Measurement Quiz15 questions, Instant scorePractice TestsLevel Measurement Quiz15 questions, Instant scorePractice TestsTemperature Measurement Quiz15 questions, Instant scorePractice TestsControl Valve and PID Quiz15 questions, Instant scorePractice TestsPLC, 4 to 20 mA and Modbus Quiz15 questions, Instant scorePractice TestsSIS and Hazardous Area Quiz15 questions, Instant scorePractice TestsCalibration and Metrology Quiz15 questions, Instant scorePractice TestsFlow Meter MCQ Test20 questions, Instant scorePractice TestsPressure Transmitter MCQ Test20 questions, Instant scorePractice TestsLevel Transmitter MCQ Test20 questions, Instant scorePractice TestsRTD and Thermocouple Quiz20 questions, Instant scorePractice TestsControl Valve Sizing Quiz20 questions, Instant scorePractice TestsSIL and Functional Safety Quiz20 questions, Instant scorePractice TestsHazardous Area and Ex Quiz20 questions, Instant scorePractice TestsMeasurement Uncertainty Quiz20 questions, Instant scorePractice TestsHART, Modbus and 4 to 20 mA Quiz20 questions, Instant scorePractice TestsProcess Analyser Quiz20 questions, Instant score
Frequently Asked Questions
Are these instrumentation tools free?
Yes. Every tool is free, works on mobile and desktop, and needs no download or sign up.
What tools are available?
Instrument tag decoding, IP, NEMA and Ex marking decoders, wire colour codes, PID tuning with a simulator, Modbus and HART protocol tools, interactive troubleshooting guides, practice quizzes, P&ID symbols, pipe and flange charts and thread charts.
How is this different from the calculators?
Calculators solve engineering equations. Tools decode, look up and explain field information such as tags, markings, colour codes and tuning rules.
Advertisement