Opto 22 AD4 Data Sheet

Standard Analog ICTD Module
Features
Single channel of optically-isolated current-to-digital conversion
designed for use with an ICTD probe from Opto 22 or from other vendors
can be used in energy management, freezer control, and similar appllications
Standard Analog ICTD Module
Description
The AD4 module provides a single channel of optically­isolated temperature-to-digital conversion. Modules plug into any Opto 22 standard analog I/O rack and are secured by a captive screw. Field connections to the module are made via two terminals on the analog I/O rack.
The AD4 module is designed for use with an ICTD probe from Opto 22 or from other vendors. See form 2072, the ICTD Temperature Probes Data Sheet, for more information
Specifications
Input Temperature Range - 188.4 °C to 150 °C
Input Response Time
Accuracy of AD4 Accuracy with ICTD Probe
Resolution with ICTD Probe 0.083 °C Power Requirements:
Module
Logic Thermal Time Constant 2.5 minutes typical (still air) Cable Length > 2,000 feet (610 meters) Isolation
Input-to-Output 4,000 Vrms Ambient Temperature
Operating Storage
5% full scale step change in 7.8 seconds 63% full scale step change in 150 seconds
± 0.3 °C ± 0.8 °C
16 mA at +15 (+/- 0.25) VDC 11 mA at -15 (+/- 0.25) VDC
1.6 mA at 5 VDC
0 °C to 70 °C
-25 °C to 85 °C
AD4 (shown with ICTD Temperature Probe)
AD4 Connection Diagram
Part Number
Part Description
AD4 ICTD Temperature Input
© 2013 Opto 22. All rights reserved. Dimensions and specifications are subject to change. Brand or product names used herein are trademarks or registered trademarks of their respective companies or organizations.
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DATA SHEET
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