Today’s smart grid relies on equipment called phasor measurement units (PMUs) to deliver real-time, mission critical data on the voltage, current, frequency, and phase within the distribution smart grid.
Cheryl Guzmán has more than 25 years experience in the precision gage calibration, repair and metrology lines of services was named as Vice President of Calibration and Metrology Services at A. A. Jansson in Waterford.
Higher tolerance “insurance” comes with a price tag.
January 8, 2014
There’s an old rule of thumb among suppliers of precision gages that tighter tolerances mean higher prices. This is understandable considering the extra effort involved working within such boundaries. But not all gage users understand this.
There are a number of documents dealing with the calibration of thread gages purporting to be “standards” that are really more like training manuals. There is a need out there for this information but invariably, instead of sticking to the metrology involved, they delve into quality decisions and things start to come off the rails.
In the past, proficiency testing (PT) items and participation frequency were formulated by accreditation bodies, regardless of the scale, customer type, and economic conditions of a laboratory.
The long awaited moment has arrived. Your blocks are back from the lab complete with a calibration report outlining the measured size of each piece in the set. Now what?