Siemens sitrans LU01 - Manual (Page 62)

Page 56 SITRANS LU01 – INSTRUCTION MANUAL 7ML19985BE02
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P652 Offset Correction
The value altered when an Offset Calibration is performed.
Alternatively, if the amount of Offset Correction required is known, enter the amount to be
added to the Reading before display.
P653 Velocity
The value adjusted based on the Sound Velocity at 20 °C (P654) vs. Temperature (P664)
characteristics of air.
Alternatively, enter the current sound velocity (if known), or perform a Sound Velocity
Calibration (P651). The units used are m/s if P005 = 1, 2, or 3, or ft/s if P005 = 4 or 5.
P654 Velocity at 20°C
This value is used to automatically calculate Sound Velocity (P653).
After performing a Sound Velocity Calibration, check this value to verify the acoustic
beam atmosphere is air (344.1 m/s or 1129 ft/s).
Alternatively, if the acoustic beam 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 Range: -999 to 9999
Related • P650 Offset Calibration
Values Range: 50.01 to 2001 m/s (164.1 to 6563 ft/s)
Related
• P651 Sound Velocity Calibration
• P654 Velocity at 20°C
Values Range: 50.01 to 2001 m/s (164.1 to 6563 ft/s)
Related
• P005 Units
• P651 Sound Velocity Calibration
• P653 Velocity