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KEY DEFINITIONS
BASIC OPERATION KEYS
o
O
+ – x
÷ =
Ç +
0 – 9 and • Keys used for entering digits.
B
CONVERT Ç KEY —
UNIT CONVERSIONS and SECOND FUNCTIONS
The Ç key is to convert between measurement units or to access
second functions, listed below:
Ç
Ç x
X
Ç X
√
6 — S
M
HEET
ETAL/
On/Clear — Turns power on. Pressing once clears the
display. Pressing twice clears all temporary values.
Turns all power off, clearing all non-permanent registers.
Arithmetic operation keys.
Percent (%) — Four-function percent. See page 30
for examples.
Backspace Key — Used to delete entries one key-
stroke at a time (unlike the o function, which
deletes the entire entry).
Convert — Used with the measurement keys to
convert between units or with other keys to access
special functions.
Clear All — Clears all values, including Memory.
Resets all permanent entries to default values
(except Preference Settings, which are retained).
Note: Use only when necessary, as it deletes all stored values.
Squares the value in the display. For example, to
Square the value ten, enter 1 0 then press X.
— Cubes the value in the display. For example, to
x
3
Cube the value ten, enter 1 0 then press ÇX.
Square Root Function — Used to find the Square
Root of a non-dimensional or area value
(e.g., 1 0 0 √ = 10).
HVAC P
C
RO
ALC
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