Is this unit compatable with RTR 500B1 series RTR 503"? Does the sender unit require calibration? If calibration required, can it be calibrated by a standard calibration house or only by T&D? Is the system NIST and ISO 17025 rated?

This RTR500BC is compatible with all RTR500 series products. Some older legacy products may require a firmware update for compatibility but that is done very easily. The base stations can’t be calibrated, nor do they require it. The loggers and sensors don’t require calibration, but calibration can be done if the customer requires it. Calibration can be done by any calibration lab with the capability to perform data logger calibrations, including our in-house calibration lab. Our calibration lab is accredited ISO/IEC 17025:2017.