Orifice Flow vs PrepTracker

Measurement of fluid flow in pipes and conduits using orifice plates are very common in industrial applications. This app quickly computes the flow rates for liquid and gases based on standard parameters as per the model shown. Users can pick any fluid from a list of fifteen most common fluids used in industrial applications. Therefore, this app can be a very helpful tool for practicing engineers and designers in design and analysis of flows in different applications. A case study on CO2 flow rate is shown in the screen shot. The result is consistent with other methods used by the industry in computation and difference is less than 0.1%. Fluids that are not in the list, users can create a custom fluid with property data and compute the flow rate using the model provided in this app. Custom fluid data can be saved and reloaded every time when custom fluid is selected. Fluids: Air, Steam, Water, Nitrogen, Oxygen, Hydrogen, Helium, CO2, Methane, Ethane, Chlorine, Ammonia, Argon, Hydraulic oil, HFC(R410A), Custom (user's choice). Orifice Type: App gives four different standard orifice design with recommended discharge coefficients as shown in the following screen shot. It also provides the details of the model used in the computation of flow rates for liquid and gases. This model is valid even for nozzles, venturi-flow meters for which the discharge coefficient (Cd) is unity. Measuring Parameters: Fluid inlet temperature and pressure, orifice geometry, pressure differential using standard pressure taps (ISO 5167), are the standard parameters required in the computation. Based on the orifice geometry, recommended discharge coefficient Cd is used. However, users can edit this using manufacturer’s data for more accurate results. App notes provides brief description of different orifice parameters for quick reference. Unit of Measurement: Users can choose different unit of measurement for both flow as well as pressure drop under given unit standard (SI or USCS). This can be conveniently selected while choosing the fluid from the picker list. App notes provides additional guideline with a link for complete documentation on implementation and validation of math-models used with industry examples.

PrepTracker helps your household get ready for emergencies, calmly and one step at a time. It works fully offline and needs no account. See where you stand Count the water, food and essentials you already have. PrepTracker shows your runway: how many days your household could last, based on official guidelines for your country and household size. Close the gaps A prioritized list of what to buy next, sized to your family, plus reminders before supplies expire. Rotate what you have into everyday use so nothing is wasted. Be ready when it happens Emergency Mode puts your medical cards, emergency numbers and plans one tap away, even without signal. Outage Mode tracks how long the power has been out and what is still safe to eat. Step-by-step first aid guides for bleeding, CPR, choking, burns and more. Plan as a family Where to meet, who to call, evacuation routes, go-bags for every person and pet. Print a household sheet for the fridge. Link your household's phones so everyone sees the same list; a new phone joins only after a phone already in your home approves it. Stay informed Live alerts from official sources for your area (earthquakes, severe weather, floods, outbreaks) and a calm heads-up before each hazard season. Private by design No account. No ads. No tracking. Your data stays on your phone unless you link your household's phones; then the list is encrypted on them with a key only they hold, and our server passes changes along without being able to read them. The optional weekly email sends only a short readiness summary, and you can stop it any time. Community mode (optional) If your community uses PrepTracker, enter its code. Its coordinators then see your household's readiness figures (readiness, days covered, household size, and whether alerts and the weekly email are on), never your name, email, items or documents, and their alerts reach you. Leave community mode at any time. Available in English, German, French, Spanish, Indonesian, Dutch and Urdu.