OED Documentation
Standard Units
Version V1.0.0
Documentation overview
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These features are only available to select people who oversee the OED site (called admins) so this information is not usually of interest to a general user.
The following assumes as you have an understanding of general units.
OED supplied units
While a site can create any desired unit and conversion, OED wants to make setup as easy as possible. To facilitate this, OED provides certain units and conversions as part of its installation. The following units and conversions are provided by OED.
Units included
| Unit | Type | Represents | Displayable |
|---|---|---|---|
| kWh | unit | quantity | yes |
| Electric_Utility | meter | quantity | no |
| BTU | unit | quantity | no |
| m³ gas | unit | quantity | no |
| kg | unit | quantity | no |
| metric ton | unit | quantity | no |
| gallon | unit | quantity | no |
| liter | unit | quantity | no |
| Fahrenheit | unit | raw | no |
| Celsius | unit | raw | no |
Without action by the site admin, the only graphing unit visible to a user is kWh. A meter unit Electric_Utility is usable kWh meters because those are never directly displayable to the user. The other units can be made available as a graphing unit if the displayable is changed to all.
Conversions included
| Source unit | Destination unit | Bidirectional | Slope | Intercept |
|---|---|---|---|---|
| kWh | BTU | yes | 3412.142 | 0 |
| BTU | m³ gas | yes | 2.73e-5 | 0 |
| kg | metric ton | yes | 0.001 | 0 |
| liter | gallon | yes | 0.2641729 | 0 |
| Celsius | Fahrenheit | yes | 1.8 | 32 |
| Electric_Utility | kWh | no | 1 | 0 |
Most of these conversions will not be visible to the user until the units involved are made visible to the user. The conversion of Electric_Utility to kWh is relating the Electric_Utility meter unit to kWh in which it reads so the slope is 1 as no conversion is effectively applied. The values for slope and intercept should be fairly standard ones that all sites are comfortable using but can be edited if desired. Note that chained conversions means that all the energy units (kWh, BTU, m³ gas) can be used and converted between.