Calculated Industries 4090 - Manual (Page 16)

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VELOCITY PRESSURE / FPM KEYS
Ç 0 VP ß © FPM — Converts entry to Velocity (Feet per
Minute - FPM), Velocity Pressure, Metric Velocity
(MPS) and Metric Velocity Pressure (kPA).
Press Result
1 Calculates Velocity (FPM) – assumes
entry is Velocity Pressure
2 Calculates Velocity Pressure – assumes
entry is Velocity (FPM)
3 Calculates Metric Velocity (MPS) –
assumes entry is kPA
4 Calculates Metric Velocity Pressure
(kPA) – assumes entry is MPS
See page 46 for examples.
CIRCULAR / ARC FUNCTION KEYS
The Circle key helps you quickly solve Circular Area, Volume or Arc
problems.
C Circle — Displays and calculates the following val-
ues, given an entered Circle Diameter* or Radius:
• Diameter
• Circumference
• Circle Area
*To enter a Diameter (e.g., ten feet), press 1 0 f C. To
enter a radius, see below.
Ç p Segment Radius — Enters or calculates the Circle
Radius (e.g.,
5 f Ç p). Used to calculate
Diameter, Circumference and Circle Area (see
above).
Ç C Arc Length or Degree of Arc — A multi-function
key that enters or calculates Arc Length or Degree
of Arc, and further solves for additional Circular/Arc
values, including Arched Rake-Walls (based on the
stored on-center), listed on next page.
(Cont’d)