VEGA VEGAFLEX 81 Modbus and Levelmaster protocol - Manual (Page 73)

73
11 Supplement
VEGAFLEX 81 • Modbus and Levelmaster protocol
41828-EN-130314
Ʋ Cable probes ε
r
≥ 1.6
Ʋ Rod probes ε
r
≥ 1.6
2
4
5
3
2
4
5
3
1 1
Fig. 37: Measuring ranges - VEGAFLEX 81
1 Reference plane
2 Probe length L
3 Measuring range (default setting refers to the measuring range in water)
4 Upper dead band (see diagrams under Accuracy - grey section)
5 Lower dead band (see diagrams under Accuracy - grey section)
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
Ʋ Min. distance to installations > 500 mm (19.69 in)