Hi kerryellsworth,
Sisense doesn't currently hold a data connector for PI Historian. However, while looking at OSIsft's website (Link) - Under the "PI Integrator for Business Analytics" section:
PI Integrators let you analyze operations data using familiar tools such as IBM Cognos, Oracle Analytics, Power BI, Qlik, SAP BI, Sisense, Tableau, TIBCO Spotfire, or any tool that accesses data using Open Database Connectivity (ODBC) or SQL standards.
I'd suggest contacting them directly to discuss the availability of a 3rd party data connector.
Thanks,
Ophir