(USA and Canada only)
G1 I/O family
The AD4 module provides a single channel of optically isolated temperature-to-digital conversion. 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.
This module mounts on a G1 analog mounting rack, for example the PB16AH.
Input Temperature Range
- 188.4 °C to 150 °C
Input Response Time
5% full scale step change in 7.8 seconds
63% full scale step change in 150 seconds
Accuracy of AD4
Accuracy with ICTD Probe
± 0.3 °C
± 0.8 °C
Resolution with ICTD Probe
16 mA at +15 (+/- 0.25) VDC
11 mA at -15 (+/- 0.25) VDC
1.6 mA at 5 VDC
Thermal Time Constant
2.5 minutes typical (still air)
> 2,000 feet (610 meters)
0 °C to 70 °C
-25 °C to 85 °C
The AD4 module provides a single channel of optically-isolated temperature-to-digital conversion.
This document is the Manufacturer's Declaration of Conformity for the products listed herein, in accordance with the rules, regulations and standards of the United Kingdom. The models cited have been tested to the essential requirements listed in the Standards section, and fully comply with the legislation as listed in UK Legislation section.
This document is the Manufacturer's Declaration of Conformity for the products listed herein, in accordance with European, international, and/or national standards and regulations.
This document is a statement of compliance with the EU Directive 2015/863/EU, Restriction of Hazardous Substances (RoHS 3). This document lists Opto 22 products that comply with the substance restrictions of the RoHS 3 directive.
This document lists all Opto 22 part numbers that have the Underwriters Laboratory (UL) approval.
This document is the Manufacturer's Declaration for the listed products as mentioned in the attachment - to which this confirmation refers - that they are in accordance with the mentioned European, international and/or national standards and regulations.