GE Optica Operator's Manual page 64

User Equations (cont.)
Programming the VGA Optica
Table 4-2: User Equation Parameters
Identifier Units
Humidity Units:
A0 Tdew °C
A1 Tdew °F
A2 %RH
A3 Twet °C
A4 Twet °F
A5 ppmv
A6 ppmw
A7 grains/lb
A8 grains/scf
A9 g/kg
A10 g/m3
A11 lb/mft3
A12 kj/kg(0)
A13 kj/kg(32)
A14 BTU/lb(0)
A15 BTU/lb(32)
A16 pw(mbar)
The equation 2 × Tdew °F + (%RH / Twet°C) would be entered as
2 × A1 + (A2 / A3)
January 2006
Identifier Units
Temperature Units:
A17 Tmp °C
A18 Tmp °F
A19 Tmp °K
A20 Tmp °R
Pressure Units:
A21 PSIA
A22 mbar
A23 bar
A24 Pa
A25 kPa
A26 mmHg
A27 inHg
A28 kg/cm2
A29 Dynes/cm2
A31 User Equation 1
A32 User Equation 2
A33 User Equation 3
4-5