The PQR D50 and D52 monitors are designed to test the Power Line with a high degree of accuracy.

In this unit all measurements are referenced to a state of the art, temperature compensated voltage source. It is recommended that each unit be calibrated annually by the factory as certain components may require calibration. 

Powertronics offers a flat rate repair and calibration.  This procedure includes:

• Upgrading the firmware to the latest version.
• Replacing the Real Time Clock Battery (if needed).
• Upgrading the hardware to the latest revision available.
• Confirming the correct operation of the testing circuits and data storage functions.
• Verifying downloading and communications functions.
• Calibrating the Voltage and Accessory ports using NIST traceable test equipment as part of Powertronics calibration procedure.

To send in your unit for calibration and repair ship the unit with a copy of your receipt to:

• Powertronics
• 143 Raymond Road
• Candia, NH, 03034