43
13 Supplement
VEGAPULS C 22 • SDI-12
58345-EN-200806
Max. measuring range
4)
15 m (49.21 ft)
Recommended measuring range
5)
up to 10 m (32.81 ft)
blocking distance
6)
Ʋ Modes 1, 2, 4
0 mm (0 in)
Ʋ Mode 3
≥ 250 mm (9.843 in)
Switch-on phase
Start-up time with operating voltage U
B
< 10 s
Output variable
Output signal
SDI-12 (only digital)
Transmission rate
1200 bit/s
Resolution, digital
1 mm (0.039 in)
Data signal
Ʋ Logical 1
0 V
Ʋ Logical 0
5 V
Protocol
SDI-12: 7 data bits, 1 stop bit, even parity
Output voltage
Ʋ Minimum logical 0
3.5 V
Ʋ Maximum logical 1
0.8 V
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 Distance to installations
> 200 mm (7.874 in)
Ʋ Reflector
Flat plate reflector
Ʋ False reflections
Biggest false signal, 20 dB smaller than the useful signal
Deviation with liquids
≤ 2 mm (meas. distance > 0.25 m/0.8202 ft)
Non-repeatability
7)
≤ 2 mm
Deviation with bulk solids
The values depend to a great extent on the application.
Binding specifications are thus not possible.
4)
Depending on application and medium
5)
With bulk solids
6)
Depending on the operating conditions
7)
Already included in the meas. deviation