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π‘οΈ Psychrometric Calculator Suite
DB + WB + Altitude β’ Mini Chart β’ RH & Dew Point Tools
Inputs
Results (basis: dry air)
π Mini Psychrometric Chart
Axes: Dry-bulb (Β°C) vs Humidity Ratio (kgw/kgda). Curves: 20β100% RH + saturation at local pressure.
Relative Humidity from pw & pws
Tip
You can get pws at the dryβbulb using the builtβin saturation routine on PanelΒ 1. Then paste it here to sanityβcheck RH from sensor data.
Inputs
HeadsβUp
Wetβbulb here uses a wellβknown approximation thatβs typically within ~Β±0.3Β Β°C for comfort ranges. For critical work, use the DB+WB panel with measured WB.
π‘οΈ Relative Humidity Calculator
Two quick methods β from Dew Point, or from WetβBulb & Pressure
Inputs
We use saturation vapor pressure at dew point as actual vapor pressure: RH = pw(Td) / pws(T).
Inputs
We use the standard approximate psychrometric relation: pw β pws(Tw) β 0.00066Β·pΒ·(1+0.00115Β·Tw)Β·(TβTw).
