### Enthalpy Calculator The information below provides a FULL description of this microblock and all of its properties. What information you see and what you can do with it depends on your license and the application you are in, and in some cases, a controller's driver version.
Microblock family | Convert microblocks
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What it does | This microblock accepts a dry bulb temperature and a relative humidity input and calculates a corresponding value for enthalpy. Enthalpy is a measure of energy inherent in the air. A high enthalpy value indicates a higher air temperature.
Click for details below Limitations Properties
#### Limitations In cases where the temperature and humidity input values are very high or very low, the enthalpy calculation can become distorted. If the db input is below 32°F or above 104°F, it may be necessary to substitute additional logic in place of the Enthalpy Calculator microblock. This may also be necessary if the hum input value falls below 0% or goes above 100%. NOTE This microblock does not support metric temperatures. If you need a metric enthalpy, convert temperature to °F for use by the db input, then convert the ent output to metric units.
#### Properties TIPS Alt+click any value in the WebCTRL® or Field Assistant interface to view property details, including its editing privilege and expression (location path) for use on graphics. You can right-click some properties in the EIKON® Property Editor and select Make editable or Make read-only to determine that property's functionality in your system.
Reference Name RefName | Use the default reference name unless you want a more descriptive name for graphics or network links. Limitations: lower case only limited to 40 characters cannot begin with a number must be unique within a control program