Tecfluid CP420L Instrukcja Użytkownika Pobierz pdf (Strona 5)

5. HART COMMUNICATION

The CH420L transmitters have a HART communication MODEM

The details of the characteristics with respect to the HART communication are available in the

appropriate Field Device Specification

Resume of the principal communications characteristics:

Manufacturer, Model and Revision Tecfluid S.A., CH420L, Rev. 0

Device type Transmitter

Hart Revision 6.0

Device Description available No

Number and type of sensors 1, external

Number and type of actuators 0

Number and type of host side signals 1, 4 – 20 mA analog

Number of Device Variables 2

Number of Dynamic Variables 1

Mappable Dynamic Variables No

Number of Common Practice Commands 13

Number of Device Specific Commands 2

Bits of Additional Device Status 12

Alternative operating modes? No

Burst mode? No

Write Protection? Yes

Analog loop electrical characteristics for communications :

Reception Impedance :

Rx > 8,5 M

Cx < 200 pF

4. PUSH BUTTON INHIBIT 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 removed, the push buttons are

disabled and the HART write protect is activated, thus inhibiting any changes in the configuration.

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Tecfluid CP420L Instrukcja Użytkownika Strona 5