I&C Pro 2.5 — built from real field experience. DP ⇌ SCALE Converter — steam density compensation built in Enter just the Scale Range, CALIB DP and measured value of a differential-pressure (DP) flow element to check instrument health instantly. Add the field-measured pressure and temperature, and the app computes the density-compensated flow automatically, based on IAPWS-IF97 steam tables. Set the design condition (Reference) once, and you can verify the reading the same way the DCS compensation logic does. Selectable pressure units — bar(g) / bar(a) / MPa / psi / kPa. Gas Unit Converter — per-country emission standards, auto-applied Pick a country and its standard reference condition (temperature, reference O2) is filled in automatically. Supported: Vietnam, Korea, EU, USA, China, Brazil, India, Russia, ISO. Reference O2 is distinguished by fuel (coal / gas / oil) — e.g. 15% for gas turbines, 6% for coal. Result unit switches automatically between mg/Nm3 and mg/m3 depending on the standard temperature. The governing regulation and cautions for comparing against CEMS are shown on a detail page. Percentage Calculator — change-rate mode added Enter an old value (A) and a new value (B) to get the increase/decrease rate directly — handy for emission-reduction calculations and more. Other improvements Icon and UI cleanup, and expanded translations across 9 languages. A commissioning tool for instrumentation & control engineers, ready to use right in the field — and always improving. Feedback is always welcome.

- Thermocouple improvements - Per-type cable color code (ANSI / IEC / JIS) shown for the selected type - Color-code chart is now a zoom / pan image - New "Lessons Learned" page (standard-mixing cautions and field cases) - Gas Unit Converter - Cleaned up the O₂ compensation label - Added field tips (mg/Nm³ at 0 °C; use O₂ from the same point and wet/dry basis) - General stability improvements

- Added O₂ Analyzer Zirconia Cell Check - Auto-calculates ideal cell voltage (Nernst) from cell temperature - Per-maker O₂ concentration vs cell voltage tables (Yokogawa built-in; Emerson, ABB, Fuji comparison) - Cell degradation / normal judgment and detailed maker comparison - Add and save your own custom maker tables - Gas Unit Converter improvements - Moisture correction based on Wet / Dry measurement basis - O₂ Compensation (reference-O₂ correction) in one screen - More compact, easier-to-tap input UI - Level Compensator - Added example profiles per vessel type (FW STOR TK, FLASH TK, HP HTR No.6-9) - General UI spacing cleanup and stability improvements

• Added example Save Config profiles to the Level Compensator for each vessel type—LP heater, flash tank, and HP heaters (No.6–9)—based on real field values. Open one to learn how the setup works, or use it as a template for saving your own instruments. • General stability and usability improvements.

Fixes a crash that closed the app when opening the Level Compensator on iOS 26. Apologies for the disruption. - The reference-leg temperature was held in two separate fields, one per vendor tab. One configuration could therefore give very different answers on Siemens T3000 and Emerson Ovation. Now there is one field. - Switching vendor tabs no longer overwrites your inputs, so a single configuration can be compared across both. - Saved configs are now kept per vessel type. Existing saves are moved automatically. - A warning when the two vendor tabs disagree by more than their density correlations explain — this catches a CALIB Range entered in the wrong direction. - New calculator: Speed Probe & Teeth. Compares the rpm two different tooth counts produce from the same pulses.

v2.0 — New Level Compensator, and 10 languages ■ New: Level Compensator Density compensation for power plant heater and drum levels. Computes the difference between what a DP level transmitter indicates and the water level actually standing in the vessel. - Two algorithms: Siemens T3000 LEVEL block and Emerson Ovation LEVELCOMP - HP heater, LP heater, flash tank and HRSG steam drum, each with its own schematic - Built on IAPWS-IF97 steam tables - Enter DP, mA or a sight-glass reading - Shows how far low the gauge glass reads, as a reference figure - When the level runs past the scaled range, reports the real level and the pinned display side by side Verified against real operating data — 1 bar to 200 bar, across two DCS vendors. ■ 10 languages English, 한국어, Tiếng Việt, Bahasa Indonesia, 中文(简体), العربية, Español, Français, Português, Русский. Arabic includes right-to-left layout. ■ Disp Probe Gap & Simulation, extended - Sensor library — pick a manufacturer's sensitivity and zero voltage to simulate against - Turbine measurement point library — journal bearings, thrust, eccentricity, key phasor, expansion detectors - Record — a worked gap-voltage record sheet with automatic linear-window fitting - DXD Setting — dual differential expansion detector gap setting with an animated schematic ■ Project profiles Save, recall, rename and delete per-site setups on the configuration-heavy calculators. ■ Improvements - Tank / Silo — dimensions in mm, drawn to the entered proportions, silo run-time estimate - Tidier Tank / Silo layout — two-column inputs, redundant rows removed - Pressure unit selection (gauge / absolute) with a span consistency warning - Stronger input sanity warnings across the calculators

A major expansion built around real field commissioning experience. [2 new categories and 4 new calculators] ■ Instrument Calibration (new category) - Pressure Visualizer Interactive visualization of absolute/atmospheric/gauge/vacuum pressure relationships with a live 11-unit comparison table (bar, mbar, kPa, mmH₂O, psi, kgf/cm², atm, and more). Optimized for condenser-vacuum, steam-drum, and other real plant scenarios. - Chemical Tank Level Tx Verification 22 preset power-plant water-treatment chemicals (HCl, H₂SO₄, NaOH, N₂H₄, NH₄OH, NaOCl, FeCl₃, and more) with automatic SG temperature compensation (individual β coefficients). Shows actual liquid height, error vs. Design SG, and mechanical gauge deviation with Case-by-Case diagnostic. Optional Tank Height input gives a % full readout. ■ Vibration (new category) - Vibration Converter Displacement-Velocity-Acceleration conversion for rotating machinery. RMS / 0-p / p-p amplitude types, both metric (µm, mm/s, m/s²) and imperial (mils, ips, g) — perfect for cross-checking Bently Nevada, SKF, Emerson, and CSI instruments. - Disp Probe Gap & Simulation Purpose-built for the two field workflows on a displacement probe channel: (1) DC Gap calibration and axial-displacement trip setpoint calculation, and (2) AC signal simulator (1510A-style) injection into the VMS for loop check, signal-range verification, and alarm/trip testing. [Fixes and improvements] - Fixed a cyclic-update bug where typing into the Square Root Converter would immediately overwrite the value - Streamlined submission workflow (encryption compliance auto-declared) - Various UI polish and consistency improvements Now 15 calculators strong. Feedback from commissioning engineers is always welcome.

New in 1.7 - New Temperature tools: Thermocouple Converter (T/C ↔ mV, types K/J/T/E) and RTD Pt100 Calculator (resistance ↔ temperature) - New Silo Level Calculator — cylinder + cone volume & mass - Redesigned home screen with quick search across all calculators - Refined UI and improved calculation accuracy - Bug fixes and performance improvements

• Improved overall UI design • Enhanced input UX: numeric keyboard, automatic keyboard dismissal • Upgraded Tank Level Calculator: auto density calculation, real-time level display • Improved calculation accuracy and bug fixes

What's New in This Version: Added RTD (PT100) and Thermocouple (K/J/T) converters Improved calculation logic and UI consistency Fixed minor bugs in Tank Level and Percentage calculators Upcoming: Coal Silo Level & Weight Estimator tool