Honeywell VRX180 user manual Relative Humidity Prompts

Models: VRX180

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Programming Function Blocks and Features

Relative Humidity

Outputs CVn OV relative humidity as a function of dry-bulb temperature, wet-bulb temperature, and atmospheric pressure.

Table 4-39 describes the Relative Humidity prompts. See Table 4-2 for additional prompts.

Table 4-39 Relative Humidity Prompts

 

Prompt

 

 

Range/Selections

 

 

Definition

 

 

RANGE LOW

 

 

OFF or number

 

 

Enter the output’s display limits. Output is not clamped

 

 

 

 

 

 

 

 

or flashed when it exceeds these limits.

 

 

RANGE HIGH

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

DRY BULB TEMP

 

 

OFF, analog parameter,

 

 

Dry bulb temperature in temperature units selected.

 

 

 

 

 

number

 

 

 

 

 

 

 

 

 

 

 

 

 

 

WET BULB TEMP

 

 

OFF, analog parameter,

 

 

Wet bulb temperature in temperature units selected.

 

 

 

 

 

number

 

 

 

 

 

 

 

 

 

 

 

 

 

 

ATM PRESS (PA)

 

 

OFF, analog parameter,

 

 

Enter atmospheric pressure in Pascals. 101325 Pa. Is

 

 

 

 

 

number

 

 

one standard atmosphere.

 

 

 

 

 

 

 

 

 

 

 

TEMPERATURE UNITS

 

 

F, C, K, R

 

 

Select the temperature units for the calculation. Units

 

 

 

 

 

 

 

 

are for wet bulb and dry bulb.

 

 

 

 

 

 

 

 

 

 

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Page 145
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Honeywell VRX180 user manual Relative Humidity Prompts