Portable temperature calibrator ADT 221A series
Additel Corporation
A highly integrated thermocouple/RTD calibrator featuring several patented technologies, ADT 221A is an ultra-compact, rugged, and ease-to-use hand-held device for sourcing, simulating and measuring, temperature, and electrical signals. Its smartphone-like menu and interface make the operation simpler and easier. ADT 221A is ideal for calibrating, maintaining, and troubleshooting process instrumentation. Automation and documentation capabilities make the ADT 221A a turnkey solution.