The Yokogawa RIO4000 is an RTD measure and simulate module for the Yokogawa YPC 4000 Series multi-function tester. The module accurately measures or simulates the resistance of 22 different RTD sensor types with nominal resistance to 4000 ohms. 2-, 3-, and 4-wire RTDs are supported and RTD material may be platinum, copper, nickel or iron. The module can simulate temperature to all conventional or smart RTD transmitters and signal conditioners including those utilizing pulsed excitation current.
The YPC 4000 converts measured resistance to a corresponding temperature value and displays the value in the user-selected temperature unit (°F, °C, °R or °K). Ohms can also be displayed for direct reading or troubleshooting assistance. Pt 100 RTDs are available from Yokogawa for use with the module. These 4-wire, DIN Class A probes come complete with handle, 5' coiled cable, and connector. Simulations are supported through setup controls that allow the user to enter a specific temperature, a range of temperatures stepped through with manual or automatic advance or a temperature range with automatic ramping advance for a selected time period.
Field recalibration of the module is provided by the YPC's "Rcal" feature. "Rcal" can be used to re-calibrate the module alone or the module with dedicated RTD for "match set" accuracy. The module + RTD option provides the best possible measurement accuracy for the most demanding measurement applications.
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