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

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