About Instemi

Instemi is an online software package for instrument calculations with the main intention of providing detailed reports with verifiable steps.

Contact Us

Please report bugs or suggestions to feedback@instemi.com.

Change Log and Announcements

November 9, 2022: Client version 0.0.1-preview22 released
  • Bug fixes in Flow element module
November 9, 2022: Server version 0.0.1-preview14 released
  • Bug fixes in Flow element calculations
November 6, 2022: Client version 0.0.1-preview21 released
  • Orifice plate thickness calculation added
November 6, 2022: Server version 0.0.1-preview13 released
  • Support for orifice plate thickness calculation added
November 2, 2022: Client version 0.0.1-preview20 released
  • References update to reflect complaince with the lastest ISO 5167 series standards
November 2, 2022: Server version 0.0.1-preview12 released
  • Flow element module updated to align with the lastest ISO 5167 series standards
October 22, 2022: Client version 0.0.1-preview19 released
  • References update to reflect complaince with the lastest API 520 standard
  • No change in server side
October 18, 2022: Client version 0.0.1-preview18 released
  • Flow calculation report updated to support permanent pressure loss for venturi tubes and nozzles
October 18, 2022: Server version 0.0.1-preview11 released
  • Flow calculations module: permanent pressure loss for venturi tubes and nozzles added
October 11, 2022: Client version 0.0.1-preview17 released
  • Flow measurement uncertainty calculation module added
October 11, 2022: Server version 0.0.1-preview10 released
  • Support for flow measurement uncertainty calculations added
June 15, 2022: Client version 0.0.1-preview16 released
  • A bug in Control Valve flowrate calculation user interface fixed
June 15, 2022: Server version 0.0.1-preview9 released
  • Several bugs fixed in Control Valve module
June 13, 2022: Client version 0.0.1-preview15 released
  • Open and Save capability added
May 25, 2022: Client version 0.0.1-preview14 released
  • Minor update in templates - no change in functionality
  • Frontend updated to utilize Angular 13.3.6
May 25, 2022: Server version 0.0.1-preview8 released
  • Backend updated to utilize ASP.NET Core 6.0
May 14, 2022: Client version 0.0.1-preview13 released
  • Several templates refactored to reduce the application size - no change in functionality
  • Several bugs rectified in Flow element module
  • Pipe Data module added
  • No change in server side
April 30, 2022: Client version 0.0.1-preview12 released
  • Several templates refactored to reduce the application size - no change in functionality
  • Several bugs rectified in Flow element module
April 30, 2022: Server version 0.0.1-preview7 released
  • Several improvements completed in Flow element module
  • Several bugs rectified in Pressure safety valve module
April 21, 2022: Client version 0.0.1-preview11 released
  • Several templates refactored to reduce the application size - no change in functionality
  • Several bugs rectified in Control valve module
  • No change in server side
April 18, 2022: Client version 0.0.1-preview10 released
  • Several templates refactored to reduce the application size - no change in functionality
  • No change in server side
April 11, 2022: Client version 0.0.1-preview9 released
  • Updated Style Sheets: decreased paddings
  • No change in server side
April 2, 2022: Client version 0.0.1-preview8 released
  • Thermowell module updated:
    • Stainless steel grade 310 removed from list of materials
    • Piping design code can now be selected
April 2, 2022: Server version 0.0.1-preview6 released
  • Thermowell module updated:
    • Stainless steel grade 310 removed from list of materials
    • Allowable working stress calculations now support both ASME B31.1 and B31.3 standards
March 30, 2022: Client version 0.0.1-preview7 released
  • Several bugs fixed for Thermowell module
  • No change in server side
March 24, 2022: Client version 0.0.1-preview6 released
  • Several bugs fixed for Flow Elements module
  • No change in server side
February 26, 2022: Server version 0.0.1-preview5 released
  • Support for differential pressure level transmitter calculations added
February 26, 2022: Client version 0.0.1-preview5 released
  • Support for differential pressure level transmitter calculations added
December 19, 2021: Server version 0.0.1-preview4 released
  • Support for control valve flowrate calculations added
  • Miscellanous bugs fixed
December 19, 2021: Client version 0.0.1-preview4 released
  • Control Valve module updated:
    • Flowrate Calulation added
  • Miscellanous bugs fixed
August 15, 2021: Server version 0.0.1-preview3 released
  • Support for thermowell calculations over a range of process conditions re-instated
August 15, 2021: Client version 0.0.1-preview3 released
  • Thermowell module updated:
    • Link to 'assessment over a range' is re-instated
  • Cache-busting is now enforced
August 9, 2021: Client version 0.0.1-preview2 released
  • Thermowell module updated:
    • Thermowell material properties can be entered by the user
    • Link to 'assessment over a range' is temporarily removed
August 8, 2021: Server version 0.0.1-preview2 released
  • Thermowell module is revamped
July 24, 2021: Server version 0.0.1-preview1 released
  • Baseline preview release
  • APIs developed to comply with:
    • Control Valves: IEC 60534-2-1 (Edition 2.0 2011), IEC 60534-8-3 (Edition 3.0 2010), IEC 60534-8-4 (Edition 3.0 2015)
    • Pressure Safety Relief Valves: API STD 520 (Ninth Edition 2007), API STD 526 (Seventh Edition 2017 + Errata 1 dated September 2018)
    • Flow Elements: ISO 5167-1 (Second Edition 2003), ISO 5167-2 (First Edition 2003), ISO 5167-3 (Second Edition 2020), ISO 5167-4 (First Edition 2003), ISO 5167-5 (First Edition 2016), ISO 5167-6 (First Edition 2019), ISO/TR 15377 (Third Edition 2018)
    • Thermowells: ASME PTC 19.3 TW:2016
    • Pipe Sizes: ASME B36.10M-2015 (+ Errata #16-62 dated 01/11/16), ASME B36.19M-2004 (Reaffirmed 2015)
July 24, 2021: Client version 0.0.1-preview1 released
  • Baseline preview release
  • Modules covered:
    • Control Valves
      • Flow Coefficient / Noise Calculations
    • Pressure Safety Relief Valves
      • Sizing Calculations
    • Flow Elements
      • Sizing Calculations
      • Differential Pressure Calculations
      • Flowrate Calculations
    • Thermowells
      • Wake Frequency and Stress Calculations - At discrete operating conditions
      • Wake Frequency and Stress Calculations - Over a range of operating conditions