Push button inhibit and "write protect, Models, Technical characteristics – Tecfluid CP420R User Manual

Page 9: 1 power supply, 2 totalizer, 3 flow rate indication, 7push button inhibit and “write protect, 8 models, 9 technical characteristics

Analog loop electrical characteristics for communications :

Reception Impedance :

8,5

MΩ

200

PUSH BUTTON INHIBIT 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 push
buttons are disabled and the HART write protect is activated, thus inhibiting any changes
in the configuration.
To gain access, remove the left hand side cover.

8 MODELS

__ 420 __

AV Explosion proof enclosure

C COVOL input

T Turbine input

L Local mounting on the flow meter

R DIN rail mounting inside a switchboard

P Panel mounting

P Transmitter with analog output

H Transmitter with analog output and HART communication

9 TECHNICAL

CHARACTERISTICS

9.1 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:

12 ... 36 VDC

Power consumption:

≤ 20 mA

9.2 Totalizer

N. of digits:

Size of the digit:

8 mm

Reset:

By means of push button

9.3

Flow rate Indication
N. of digits:

Size of the digit:

5 mm

This manual is related to the following products:

CH420R