Consider a SCM5B32 with a ±0.1% variation in power supply voltage. The module PSS error in output would be ±0.0005% and is clearly negligible. Modern power supplies for SCM applications are very stable and have only fractions of % changes in their voltage outputs during normal operation; however, these supplies may be purchased with outputs, which are not exactly 5 volts. Dataforth’s low PSS designs ensure that their SCM specifications remain valid for power supply voltages within the 4.75-5.25V range.
All Dataforth signal conditioner product data sheets include Power Supply Sensitivity specifications. Moreover, modules are shipped with serialized test reports to verify performance and to validate that the modules meet the published data sheet specifications.
Here's an example of a typical Dataforth product data sheet and serialized test report --Dataforth DIN mount module for Thermocouple inputs
(170kb pdf file)Dataforth Test Report
example shipped with each module (78kb pdf file)
Remember, our Application Engineers can assist you with signal conditioner selection over the phone or via fax and email. Call us at our manufacturing facility in Tucson at 520-741-1404 (fax 520-741-0762) or Email us at firstname.lastname@example.org