Tecfluid CP420P - Manual (Page 10)

10
7 KEYBOARD INHIBITION AND “WRITE PROTECT”
The transmitter has a jumper situated behind the PCB at the top left corner, which can be
used to avoid changes in the configuration. When the jumper is removed, the keyboard is
disabled and the HART
TM write protect is activated, thus inhibiting any changes in the
configuration.
To gain access, remove the frame from the housing and remove the front plate forward.
8 TECHNICAL CHARACTERISTICS
8.1 Power supply
2 wires, by means of the current loop.
The instrument has a protection diode to avoid damage if the power supply is connected
with inverted polarity .
Nominal voltage:
8 ... 36 VDC
Power consumption: ≤ 20 mA
8.2 Totalizer
N. of digits: 7
Size of the digit: 8 mm
Reset:
By means of keyboard
8.3 Flow rate Indication
N. of digits:
5
Size of the digit: 5 mm
8.4 Housing
Ingress protection (once installed in a panel):
Back
IP30
Front IP50
Silicone sleeves for the front side, for an IP65 ingress protection, are available.
Ambient temperature range:
0 … +60 ºC
8.5 Input terminals
The pulse input is connected to a screw terminal block marked as Pulse. Numeration is as
following.
Terminal n. Series COVOL Series TM
1 Common Live
2 Live Live
8.6 General
This material conforms with the following directives:
2004/108/EC Electromagnetic Compatibility.
2002/96/EC Waste electrical and electronic equipment.