Keyboard Lock And "Write Protect; Technical Characteristics - Tecfluid CP CH420 Series Instruction Manual

Numbr of Common Practice Commands
Number of Device Specific Commands
Bits of Additional Device Status
Alternative operating modes?
Burst mode?
Write Protection?
Analog loop electrical characteristics for communications :
Reception Impedance:
8

KEYBOARD LOCK AND "WRITE PROTECT"

The transmitter has a jumper situated behind the display on the left hand side which can be
used to avoid changes in the configuration. When the jumper is set, the transmitter can be
configured by means of the keyboard or through HART communication. When the jumper is
removed, the push buttons are disabled and the HART write protect is activated, thus
inhibiting any changes in the configuration.
9

TECHNICAL CHARACTERISTICS

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:
Power consumption:
Totalizer
N. of digits:
Size of the digit:
Reset:
Flow rate Indication
N. of digits:
Size of the digit:
General characteristics
Ingress protection:
CP ... CH420L:
CP ... CH420R:
Ambient temperature range:
Rx > 8,5 MΩ
Cx < 200 pF
7.5 ... 36 VDC
≤ 20 mA
7
8 mm
By means of push button
5
5 mm
IP65
IP40
0ºC ... +60 ºC
10
13
2
12
No
No
Yes