17
Gas
Sound Velocity
Chlorine 206
m/sec
Carbon Dioxide.
259 m/sec
Argon 308
m/sec
Oxygen 316
m/sec
Air 331.5
m/sec
Ammonia 415
m/sec
Methane 430
m/sec
Helium 435
m/sec
Neon 965
m/sec
22) Velocity Temperature Factor
The sound velocity in air increases or decreases at fixed rate(0.6m/
℃
)
This option allows the rate of change in m/
°
C to be set according to the present atmosphere and
temperature. This option is useful where ambiguous or mixed gas exists. The newly set value should be
compared with the actual level, several times, to obtain an accurately displayed reading.
- Setting Range : -2.0m/°C ~ 2.0m/°C
23) Material Temperature
The SLM800S/1200S uses an internal temperature sensor, housed inside the transducer nose cone
and therefore the temperature used for compensation is the temperature close to sensor. In
applications where there is a large difference between the temperature near the sensor and that at the
surface of the material being measured, errors in measurement may occur.
This mode allows for the present temperature at the material surface to be entered and reduces any
error in measurement.
- Setting Range : 0~100.0
VELOCITY TEMP FACTOR
FACTOR : 0.6m/
°
C
MATERIAL TEMPERATURE
TEMP : 25.0
°
C
