What it does
Expression functions for tags and bindings, and script functions under system.psychro for gateway, Perspective, Vision and Designer scripts. Pressure is always an argument, so results stay right at altitude, and invalid inputs raise an error instead of returning a wrong number.
Where it helps
- Cold rooms and cold chains, where frost and condensation matter
- Drying of tea, coffee and grain
- Greenhouse climate control
- Compressed air systems
- Cooling towers and evaporative coolers
- Air conditioning and cleanrooms
Accuracy
Checked against PsychroLib, the ASHRAE reference implementation, and an independent Murphy and Koop implementation below 0 °C: 34,057 results from -100 to 200 °C, run inside Ignition 8.1 and 8.3, with zero failures.
Status
| Version | 0.1.0 |
|---|---|
| Ignition | 8.1.33 or later, and 8.3.3 or later |
| Price | Free, and Maker Edition compatible |
| Licence | Apache License 2.0 |
| Distribution | Signed module files in a GitHub release |