8
3 Product description
VEGAPULS C 21 • SDI-12
58342-EN-200121
0044
12...35V
4...20mA HART
TAG1234
123456
1
5
6
2
3
4
2019
www.vega.com
D-77761 SCHILTACH,
Made in Germany
VEGAPULS C 2.
s/n 12345678
15m
IP66/IP68, TYPE 6P
MWP 3bar (300kPa)
PVDF
Fig. 2: Layout of the type label (example)
1 Instrument type
2 Field for approvals
3 Technical data
4 Bluetooth access code
5 QR code for device documentation
6 Serial number
Move to "www.vega.com" and enter in the search field the serial
number of your instrument.
There you can find the following information about the instrument:
•
Order data
•
Documentation
•
Software
Alternatively, you can find all via your smartphone:
•
Scan the QR-code on the type label of the device or
•
Enter serial number manually in the VEGA Tools app (available
free of charge in the respective stores)
3.2 Principle of operation
The VEGAPULS C 21 SDI-12 can be operated on any data logger
with SDI-12 interface. The sensors are powered via the +12 V cable
of the three-wire connection cable. The device is therefore particu-
larly suitable for battery-supported applications requiring low power
consumption as well as applications with a signal and supply cable
for several sensors.
The VEGAPULS C 21 SDI-12 can be operated on any data logger
with SDI-12 interface. The sensors are powered via the +12 V cable
of the three-wire connection cable. The device is therefore particu-
larly suitable for battery-supported applications requiring low power
consumption as well as applications with a signal and supply cable
for several sensors.
The instrument emits a continuous, frequency-modulated radar signal
through its antenna. The emitted signal is reflected by the medium
and received by the antenna as an echo with modified frequency. The
frequency change is proportional to the distance and is converted into
the filling height.
Documents and software
Power supply and signal
processing
Power supply and signal
processing
Functional principle
