VEGA VEGASCAN 850 - Manual (Page 21)

VEGASCAN 850 21
Technical data
Display of measured value (optional)
Liquid-crystal display
- in sensor
scalable output of measured values as graph
and digital value
- powered externally by the sensor scalable output of measured values as graph
and digital value. Display of measured values
can be mounted up to 25 m separated
from the sensor.
Adjustment
- PC with adjustment software VEGA Visual Operating via RS 232 interface (max. 15 m
cable length)
- adjustment module MINICOM (only the individual sensor is adjustable)
Characteristics 1)
(typical values under reference conditions, all statements relate to the nominal measuring
range)
Min. span
(between empty and full adjustment) > 20 mm (recommended > 50 mm)
Ultrasonic frequency (at 20°C)
- VEGASON 51 70 kHz
- VEGASON 52 55 kHz
- VEGASON 53 38 kHz
- VEGASON 54 30 kHz
- VEGASON 55 18 kHz
- VEGASON 56 10 kHz
Meas. intervals
- VEGASON 51 1.0 s
- VEGASON 52 1.0 s
- VEGASON 53 0.6 s
- VEGASON 54 1.0 s
- VEGASON 55 1.5 s
- VEGASON 56 2.0 s
Beam angle at -3 dB emitted power
- VEGASON 51 5.5°
- VEGASON 52 5.5°
- VEGASON 53 3°
- VEGASON 54 4°
- VEGASON 55 5°
- VEGASON 56 6°
Influence of the process temperature 1.8 %/10 K, however is compensated by a
dynamic temperature detection integrated
in the transducer
Influence of the process pressure negligible within the permitted sensor pressures
Adjustment time 2)
- VEGASON 51 … 54 > 2 s (depending on the parameter setting)
- VEGASON 55, 56 > 4 s (depending on the parameter setting)
1) Similar to DIN 16 086, reference conditions acc. to IEC 770;
temperature 15°C … 35°C; moisture 45 % … 75 %; pressure 860 mbar … 1060 mbar
2) The adjustment time is the time required by the sensors for the correct output of the level (with max. 10 %
deviation) after a sudden level change.