70
10 Supplement
VEGAPULS 69 • Modbus and Levelmaster protocol
47252-EN-210205
2
1
3
2
1
3
Fig. 43: Data of the input variable, on the left flange with lens antenna and plastic horn antenna, on the right thread
with integrated horn antenna
1 Reference plane
2 Measured variable, max. measuring range
3 Usable measuring range (recommended min. distance see " Deviation")
Measuring range
Ʋ
Max. measuring range
120 m (393.7 ft)
Ʋ
Recommended measuring range for
thread version with integrated horn
antenna
up to 20 m (65.62 ft)
Output variable
Output
Ʋ
Physical layer
Digital output signal according to standard EIA-485
Ʋ Bus specifications
Modbus Application Protocol V1.1b3, Modbus over se-
rial line V1.02
Ʋ
Data protocols
Modbus RTU, Modbus ASCII, Levelmaster
Max. transmission rate
57.6 Kbit/s
Deviation (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 internal installations > 200 mm (7.874 in)
Ʋ Reflector
Flat plate reflector, surface 1 x 1 m (3.281 x 3.281 ft)
Ʋ False reflections
Biggest false signal, 20 dB smaller than the useful signal
Deviation with liquids
≤ 5 mm (meas. distance > 1.0 m/3.280 ft)
Non-repeatability
2)
≤ 1 mm
Deviation with bulk solids
The values depend to a great extent on the application.
Binding specifications are thus not possible.
2)
Already included in the meas. deviation
