Tools for everyday instrument work
Calculators, simulators and converters in one free app. Open any tool in your browser, or install the app on your phone and use it offline in the field.
Control systems
PID Tuning Simulator
A live tank with level, pressure, temperature and flow loops. Tune Kc, Ti and Td, watch SP, PV and MV trends and build your own scenarios.
Open → NewLoop Tuning Calculator
PID settings from a bump test: Lambda (IMC) and Ziegler–Nichols, for self-regulating and level loops. Gain ⇄ PB, Ti ⇄ repeats/min.
Open →4–20 mA Loop Animation
See the current, the 250 Ω voltage and the DCS reading. Break the wire, fail the sensor.
Open →Digital & logic
DIP Switch & Binary
Decimal ⇄ binary ⇄ hex with clickable DIP switches, for node addresses and device settings. LSB/MSB and inverted switches.
Open → NewLogic Gate Simulator
AND, OR, NOT, NAND, NOR, XOR, XNOR and 2oo3 voting. Tap the inputs and watch the output and the truth table.
Open →Signals & loops
Analog Signal Scaler
4–20 mA, 0–10 V, 1–5 V ⇄ % ⇄ process value.
Square Root Extraction
DP ⇄ flow, linear ⇄ square-root mA.
DP Flow Re-ranging
New DP range for a new flow or density.
NewDP Primary Element
Size an orifice, flow nozzle or venturi tube from flow and pipe data, or find the flow a given element passes. Plate specification and restriction orifices · ISO 5167 / AGA 3.
NewDP Flow Calculator
Flow from a measured ΔP, or the ΔP for a target flow, for gas, natural gas (AGA 8), steam (IAPWS-IF97) and liquids, with uncertainty and energy · ISO 5167 / AGA 3.
Loop Load Check
Supply voltage, loop resistance, cable length.
Measurement & valves
RTD Calculator
Pt100 / Pt1000 resistance ⇄ temperature.
Thermocouple Converter
Types K, J, T, E, N, R, S, B, mV ⇄ °C.
DP Level Calibration
Dry leg, wet leg and remote seals.
Interface & Density
DP range for interface or SG.
NewRadar Level Lab
GWR and non-contacting radar: animated level and interface, echoes, interface vs SG, commissioning, troubleshooting and fault lab. Works offline.
Control Valve Sizing
IEC Cv for water, oils, gas and steam by valve style, with cavitation check and animation.
NewValve Stroke Check
Forward / reverse positioner action: mA ⇄ travel %, moving valve, stroke-test table with pass/fail.
NewSolenoid Coil Check
Hold your phone to a solenoid coil: live AC and DC µT readings with adjustable thresholds, a spinning indicator, sound and vibration when energised, plus a coil resistance check.
Unit Converter
Pressure, flow, temperature, density…
Coming next
Thermowell Calculator
Wake frequency and stress checks to ASME PTC 19.3 TW.
Gas Pipeline Sizing
Flow capacity, outlet pressure or pipe size with Weymouth, Panhandle A/B, IGT, Spitzglass and the general equation; AGA 8 Z; velocity limits; B31.8 design pressure.
NewRelief Valve Quick Check
First-pass relief area for gas, steam (IAPWS-IF97) and liquid, critical and subcritical, with the API 526 orifice letter.
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