VEGA VEGAPULS 68 (≥ 2.0.0 - ≥ 4.0.0) Modbus and Levelmaster protocol - Manual (Page 62)

62
11 Supplement
VEGAPULS 68 • Modbus and Levelmaster protocol
41370-EN-121011
Input variable
Measured variable
The measured quantity is the distance between process
fitting of the sensor and product surface. The reference
plane is the seal surface on the hexagon or the lower
side of the flange.
3
4
2
1
Fig. 49: Data of the input variable
1 Reference plane
2 Measured variable, max. measuring range
3 Antenna length
4 Useful measuring range
Max. measuring range 75 m (246.1 ft)
Recommended meas. range depending on the antenna diameter
Ʋ ø 40 mm (1.575 in) up to 15 m (49.21 ft)
Ʋ ø 48 mm (1.89 in) up to 20 m (65.62 ft)
Ʋ ø 75 mm (2.953 in) up to 40 m (131.2 ft)
Ʋ ø 95 mm (3.74 in) up to 50 m (164 ft)
Ʋ Parabolic antenna up to 75 m (246.1 ft)
Output variable
Output
Ʋ Physical layer Digital output signal according to standard EIA-485
Ʋ Bus specifications Modbus Application Protocol V1.1b, Modbus over serial
line V1.02
Ʋ Protocols Modbus RTU, Modbus ASCII, Levelmaster
Max. transmission rate 9.6 Kbit/s
Accuracy (according to DIN EN 60770-1)
Process reference conditions according to DIN EN 61298-1
Ʋ Temperature +18 … +30 °C (+64 … +86 °F)
Ʋ Relative humidity 45 … 75 %
Ʋ Air pressure 860 … 1060 mbar/86 … 106 kPa (12.5 … 15.4 psig)
Installation reference conditions