Absolute Humidity - Johnson Controls - Metasys - LIT-12011147 - Software Application - Controller Configuration Tool - 15.0

Controller Tool Help

Brand
Johnson Controls
Metasys
Product name
Controller Configuration Tool
Document type
User Guide
Document number
LIT-12011147
Version
15.0
Revision date
2022-11-18
Language
English

The Absolute Humidity logic block calculates the density of the water vapor element of air. The absolute humidity is the ratio of the mass of water vapor in a given volume of air or the weight of the water vapor in a known value of air.

The Absolute Humidity primitive provides the following reliability values: Reliable, Input Unreliable, Math Error.

The following table describes the inputs and outputs of the Absolute Humidity logic block.

Table 1. Absolute Humidity Block Inputs and Outputs

Name

Data Type

Exposed for Connection by Default

Description

Default Value

Inputs

Dry Bulb Temperature

Float

Yes

Indicates the temperature of air as measured with a simple thermometer.

25 °C,

77 °F

Relative Humidity

Float

Yes

Indicates the relative humidity of air.

50%

Range: 0-100%

Outputs

Absolute Humidity 1

Float

Yes

Indicates the density of water vapor in air.

11.5 g/c m,

0.0 lb/cu ft

Properties

Unit Set

Enum

N/A

Indicates the units of measurement used by the block.

SI, IP

1 This input or output is the Default Element of the block.