Temperature Compensation (P660 To P664) - Siemens SITRANS Probe LU Kurzanleitung

P654 Sound Velocity at 20
This value is used to automatically calculate Sound Velocity (P653).
Values
Related
After performing a sound Velocity Calibration, check this value to verify the acoustic
beam atmosphere in air (344.1 m/s or 1129 ft/s).

Temperature Compensation (P660 to P664)

P660 Temperature source
Determines the source of the temperature reading used for calculating speed of sound.
Values
Note:
Maximum Temperature (P300) always uses the transducer as source: it is not
affected by P660.
P661 Temperature fixed
Defines the fixed temperature (in
2 (fixed temperature).
Values
Use this function when you want to manually override the temperature sensor with a
fixed temperature value.
• Set P660 to 2.
• Enter the fixed temperature value you want to use in place of the sensor
temperature.
Page 48 SITRANS Probe LU – INSTRUCTION MANUAL
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Range
50.01 to 2001 m/s (164.1 to 6563 ft/s)
• P005 Units
• P651 Sound Velocity Calibration
• P653 Velocity
1 * Transducer (P664)
2 Fixed temperature (P661)
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Range
–40 to 85
Default
20 (
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