For recalibration of the tester, is it required to send back the tester to the factory or can we run a calibration using our shop standard?
Accuracy verification of the meter testers can be done by the user.
It is the same procedure that we offer on the NT models and uses the same test jack and interface.
The material needed for calibrating the units is:
- An isolated power supply 120V-240V rated at least 150 VA;
- A Reference standard traceable to NIST with precision 0.05% minimum;
- A Probewell accuracy testing kit ATK-3 (for three phase models) or ATK-4 (for single phase models).
The calibration report can be generated in PDF format for record keeping.
User Calibration: With this parameter, the user may apply a specific, single percentage calibration offset to the unit.
This is useful when the unit calibration must match a NIST traceable standard.
The maximum value for this offset is ± 0.05%, by steps of 0.001%. The deviation is set at 0.000% (nil) by default.
The User Calibration correction factor is stored in the non-volatile memory of the unit socket.
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