Data Formats; Filter Frequencies; Hardware Features - Spectrum Controls 1769 Series User Manual

6 channel isolated thermocouple/mv input module
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Compact™ IO Isolated Thermocouple Module
User's Manual Pub. 0300244-01 Rev. A

1.1.2 Data Formats

The data can be configured on board each module as:
Engineering units x 1
Engineering units x 10
Scaled-for-PID
Percent of full-scale
Raw/proportional data

1.1.3 Filter Frequencies

The module uses a digital filter that provides high frequency noise rejection for the input
signals. The filter is programmable, allowing you to select from six different filter
frequencies for each channel:
4.17 Hz
10 Hz
16.7 Hz
19.6 Hz
62 Hz
470 Hz

1.1.4 Hardware Features

The module contains a removable terminal block. Channels are wired as differential
inputs. Two cold junction compensation (CJC) sensors are attached to the terminal block
to enable accurate readings from each channel. These sensors compensate for offset
voltages introduced into the input signal as a result of the cold-junction where the
thermocouple wires are connected to the module.
Module configuration is normally done via the controller's programming software. In
addition, some controllers support configuration via the user program. In either case, the
module configuration is stored in the memory of the controller. Refer to your controller's
user manual for more information.

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