Inst Calculator

1. Signal Scaling & Conversions ​PV to mA Scaling: Convert Process Variable (PV) values to a standard 4-20{ mA} signal loop. ​mA to PV Scaling: Determine the process value based on a measured milliamp input. ​Unit Converters: High-precision conversion tools for: ​Pressure: (e.g., bar, psi, kPa, inH_2O) ​Temperature: (Celsius, Fahrenheit, Kelvin) ​Flow: (Volumetric and mass flow rates) ​2. Differential Pressure (DP) Transmitter Tools ​Accurately calculate the Low Range Value (LRV) and High Range Value (HRV) for level measurement applications: ​Dry Leg: For closed tanks where the HP leg is connected to the bottom and the LP leg is atmospheric or gas-filled. ​Wet Leg: For applications using a fill fluid in the impulse lines to prevent process vapors from condensing. ​Zero Elevation & Suppression: * Zero Suppression: When the transmitter is mounted below the high-pressure tapping point. ​Zero Elevation: When the transmitter is mounted above the high-pressure tapping point or used with a wet leg. ​3. RTD Temperature Calculations ​Convert resistance values to temperature (and vice versa) using standard Callendar-Van Dusen coefficients for: ​Pt100 ​Pt500 ​Pt1000 ​4. Process Variable (PV) Analysis ​Quickly calculate values for the four primary process variables: ​Flow: Differential pressure-based flow and linear scaling. ​Level: Hydrostatic pressure-to-level conversions. ​Pressure: Static and differential pressure analysis. ​Temperature: Resistance and signal-based tracking. ​User Best Practices & Safety ​Input Verification: Always double-check your units (e.g., inH_2O vs mmH_2O) before applying settings to field devices. ​Specific Gravity (SG): Ensure the SG of the process fluid and the "Wet Leg" fill fluid are accurately entered for DP Level calculations. ​Standard Reference: All RTD calculations follow the IEC 60751 standard. ​Technical Formulas Used ​For transparency, the app utilizes the standard linear scaling formula: