7.
MODELS
C
__ 420 __
__
C COVOL input
T Turbine input
L Local mounting on the flow meter
R DIN rail mounting inside a switchboard
P Transmitter with analog output
H Transmitter with analog output and HART communication
8.
TECHNICAL CHARACTERISTICS
8.1. Power supply
2 wires, by means of the loop current.
The instrument has a protection diode to avoid damage if the power supply is connected
with inverted polarity .
Nominal voltage: 7.5 ... 36 Vdc
Power consumption:
≤
20 mA
8.2. Totalizer
N. of digits: 7
Size of the digit: 8 mm
Reset: By means of push button
8.3. Flow rate Indication
N. of digits: 5
Size of the digit: 5 mm
8.4. General characteristics
Ingress protection: IP40
Ambient temperature range: 0 … +60 ºC
8.5. Input terminals
The pulse input is connected to a screw terminal block marked as
Pulse
.
Terminal n. COVOL Turbine
1 Common Live
2 Live Live
8.6. Inputs characteristics
NOTE: The input terminals are not isolated from the 4-20 mA loop. Under no
circumstances can an electrical connection be made between the 4-20 mA loop and
the inputs. In the event of supplying various transmitters with the same power
supply one must make sure that the inputs isolated between each other.
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