Application note for PD 642 / PD 643

Analogue input: 4 x 0-100mV / Thermocouple / Analogue input: 3 x 0-100mV / Thermocouple

Feature overview:

The PD 642 contains 4 and the PD 643 contains 3 analogue channels, each of which can be configured for use with an input signal of: 0 to 100mV or one of a selection of thermocouples from the range:

Type E – (-94.8 – +1000 C)
Type K – (-153.7 – +1372 C)
Type N – (-270 – +1300 C)
Type R – (-50 – +1768 C)
Type S – (-50 – +1768 C)
Type T – (-166.5 – +1000 C)

All PROCES-DATA modules are based on the Channel concept. A channel is a functional object, consisting of both functions and all function-related data.

A PD 642 / 643 module consists of 2 channel types:

Service channel:
Analogue Input channel:

General module behaviour and interface
Functions and data for analogue input

Analogue Input channel description:

Input channels provided by PROCES-DATA contain much more than just the basic input function. The input channel functions and associated parameters are formed into a channel description. The module’s integrated controller handles all channel functions.
Functions need only to be configured for operation. No additional programming is required.

Analogue Input Channel monitors:

Signal out of range

Analogue Input Channel functions:

0-100mV input signal scaling to SI unit
Thermocouple input signal scaling
Thermocouple offset adjustment
Signal input filter

Related Topics

Transmitter installation
Transmitter error compensation
Application note for PD 640 (mA)
Application note for PD 641 / 643 (Pt100 / Pt 1000)
Analogue modules