I N S T R U M E N T A T I O N

2004 CHEMPUTE SOFTWARE CATALOGUE p 33

INSTRUCALC - Instrument Engineering CalculationsGULF PUBLISHING (USA) Version 5.1

WINDOWS

INSTRUCALC contains 74 sub-programs for:

CONTROL VALVE Sizing Liquid flow; gas/vapour flow; two-phase flowFLOW ELEMENT Sizing Orifice Plate,(flange taps, pipe taps, corner taps,

segmental, quadrant-edged, eccentric andconical plates); Restriction Orifice Plates;

Flow Nozzle; Venturi Tubes; Lo-Loss Tubes; RELIEF VALVE Sizing Safety Relief Valves (liquid, gas, steam, entrapped liquid

in heat exchanger/pipeline; fire sizing)Tank Vents(API 2000); Rupture Disks; Breather Valves

AUXILIARY Calculations Line pressure drop (liquid/gas flow)Water Hammer (closing time, max pressure) Compressibility Factor (gas/vapour)Gas and Vapour DensityVapour Temperature and PressureLatent Heat of VaporizationMixture Physical Properties

Control Valve calculations are to ANSI / ISA-S75.01,1985 andinclude noise level calculations, and dynamic sizing. Orificeplate calculations are done using the ISO 5167 (Miller)Method (replaces Spink Handbook Method), and can alsoinclude dynamic inlet pressure conditions. Safety Valvecalculations are to API RP520 (1976), NFPA30 or API.Features of INSTRUCALC include ISA-type data sheets for allcalculated results and the ability to create structured jobdatabases, each containing a group of job tags.

A database of 64 fluids is included with the program withproperties for density, viscosity and vapour pressure andusers can add their own fluids to the database . A pipe andpipe material database is included. In addition, INSTRUCALCstill provides the popular built-in engineering unit options thatallow any combination of English, SI or user units during aprogram run, making conversion tables unnecessary. Thesoftware also allows one to stop in the middle of a calculation,go to another routine to calculate further input data, obtain aprintout, and then go back to the original calculation to use theinput value. Data may be imported and exported toINSTRUCALC using ASCII files. The program offers fullscreen editing of all data screens, supports colour, built-insteam property calculations and rigorous error checking.

INSTRUCALC 5.1 PLUS is an extended version of INSTRUCALC 5.0 which has several additional flowmetercalculations. This includes routines for AGA 3 (1990) Flow Orifice Plates, Integral Flow Orifice assemblies(quadrant or square edged), Target Meters, Elbow Flowmeters, Wedge Flowmeters, Chemical Seal WedgeFlowmeters, Vortex Flowmeters, Annubars (Pitot Tubes), and Rotameters.