7ML19981FB06 MultiRanger 100/200 – INSTRUCTION MANUAL Page 181
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Paramete rs

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).
Temperature Compensation (P660 to P664)

P660 Temp Source

Source of the temperature reading used to adjust the speed of sound.

The MultiRanger uses the TS-3 temperature sensor assigned to the transducer. If one is
not connected, the ultrasonic/temperature transducer is used. If the transducer does not
have an internal temperature sensor, the Temp Fixed (P661) value is used.
If the acoustic beam atmosphere temperature varies with distance from the transducer,
connect a TS-3 Temperature Sensor and ultrasonic / temperature transducers, and select
average.
Primary Index
Single Point Model Dual Point Model
Global Transducer
Values Range: 50.0 to 2000.0 m/s (164 to 6562 ft/s)
Related
• P005 Units
• P651 Sound Velocity Calibration
• P653 Velocity
Primary Index Transducer
Values
1*AUTO
2Temp Fixed
3 Ultrasonic/Temperature Transducer
4 TS-3 Temperature Sensor
5 Average (TS-3 and transducer)
Alters • P664 Temperature
Related
• P651 Sound Velocity
• P653 Velocity
• P654 Velocity at 20°C
• P661 Temp Fixed