Commercial Gas Calculator 4+
Oliver Shingler
Designed for iPad
-
- £1.99
- Offers In-App Purchases
Screenshots
Description
This quick and simple-to-use app will assist gas engineers in calculating the maximum time required to purge air from a non-domestic natural gas installation, allowing the appliances to fire correctly.
Suitable for natural gas (NG) installations only, with an installation volume not exceeding 1m³, and a maximum operating pressure (MOP) not exceeding 40mbar at the outlet of the primary meter regulator. Calculations are performed in accordance with IGE/UP/1A and are intended to help you double-check your own calculations.
If you also require the tightness testing duration (TTD) for the system, the option to calculate this is available to purchase in-app.
For the busy multi-client gas professional, there's an option to purchase a Save Installations add-on allowing you to save and retrieve installation layouts for future reference.
What’s New
Version 1.3.1
Updated for iOS 17
Ratings and Reviews
Seriously lacking
This is fine for domestic and medium-sized commercial installations, but where it falls short is on calculations involving larger internal volumes. I find that once you get up to about 1.8 cubic meters or above, it simply errors and does not give purge and test times at all.
Furthermore the steel pipe sizes (a) are given in mm when steel is always measured imperially - in inches and fractions (b) only goes up to 150mm - six inches - when eight inch, twelve and above are common.
Disappointing app that really could be indispensable with these small changes.
Wrong calculations
Was a good app when I bought it until I realised the calculations were somehow wrong.
I worked one out today using the book (did it three times) & came out as 191 second purge time where as this app said 94 seconds ! Be using the trusted book next time !
Developer Response ,
Hi, could you please contact me at support@speaktothegeek.co.uk with your worked example so as I can reproduce the problem. Your assistance in resolving this will be greatly appreciated as current test scenarios are not showing any errors.
Could be so much better
Yes the calculator gives TTD but the calculations above do no indicate IVmeter so does not give IV to total
I expected the calculator to allow for maximum permissible leak rates, but sadly it just works out the purge volume and TTD although given i had to manually work out to see if it was correct
NO TTP nor let by period
Unfortunately the app is sadly lacking however it does work out the pipe volume correctly !
App Privacy
The developer, Oliver Shingler, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy.
Data Not Collected
The developer does not collect any data from this app.
Privacy practices may vary based on, for example, the features you use or your age. Learn More
Information
- Provider
- Oliver Shingler
- Size
- 1.7 MB
- Category
- Utilities
- Compatibility
-
- iPhone
- Requires iOS 15.0 or later.
- iPad
- Requires iPadOS 15.0 or later.
- iPod touch
- Requires iOS 15.0 or later.
- Mac
- Requires macOS 12.0 or later and a Mac with Apple M1 chip or later.
- Apple Vision
- Requires visionOS 1.0 or later.
- Languages
-
English
- Age Rating
- 4+
- Copyright
- © Copyright 2015 Oliver Shingler and Matthew Rees
- Price
- £1.99
- In-App Purchases
-
- Tightness Testing Duration £0.99
- Save Installations £0.99