Milltronics AIRANGER DPL PLUS - Offset Correction; Velocity; Velocity at 20°C

P652 OFFSET CORRECTION
View the amount of offset applied to the Reading.
This value is automatically adjusted when an Offset Calibration is performed.
Alternatively, if the amount of Offset Correction required is known (and performing an Offset
Calibration is not desired), enter the amount to be added to the Reading before display.
values: -999 to 9999
P653 VELOCITY
View the current vessel atmosphere sound velocity.
This value is based on Velocity at 20°C (P654) for the current Temperature (P664), based
on the sound velocity vs. temperature characteristics of "air".
When a Sound Velocity Calibration is performed, this value is automatically adjusted as
required to suit the current atmosphere type, concentration, and temperature.
Alternatively, if the current sound velocity is known, enter the current sound velocity.
(Refer to Sound Velocity).
The units used are m/s if P005 = 1, 2, or 3 (ft/s if P005 = 4 or 5).
values: 50.01 to 2001 m/s (164.1 to 6563 ft/s)
P654 VELOCITY AT 20°C
View the current vessel atmosphere sound velocity normalized to 20°C (68°F).
This value is used to calculate Sound Velocity (P653), using Temperature (P664) based on
the sound velocity vs. temperature characteristics of "air".
After a Sound Velocity Calibration, this value may be checked to verify whether the vessel
atmosphere is "air" (typically 344.1 m/s or 1129 ft/s).
Alternatively, if the vessel atmosphere sound velocity at 20°C (68°F) is known, and the sound
velocity vs. temperature characteristics are similar to that of "air", enter the sound velocity.
The units used are m/s if P005 = 1, 2, or 3 (or ft/s if P005 = 4 or 5).
values: 50.01 to 2001 m/s (164.1 to 6563 ft/s)
TECHNICAL REFERENCE
PL-508 52