Calibration Certificate Comparison

Home Calibration Certificate Comparison

Accreditation

It starts with the first click: Experience the Transcat difference even before you receive your calibrated items and certificate.

Checked and Rechecked

One of the drivers of quality at Transcat is our multiple verification process. Any Out-of-Tolerance occurrences are double or re-verified using an alternate test method, a different technician, or a different calibration standard.

Multiple Audits

All Transcat Labs undergo multiple audit variations:

Yearly (at a minimum) Internal Technical and Quality Lab Audits
Random Daily Data-Desktop Audits
Over-the-Shoulder “Technical” Audits
Random Daily Parameter Verification Audits

Uniform Calibrations Across the Entire Transcat Network of Labs

In order to maintain quality, consistency, and efficiency, each Transcat lab employs the same:

Quality System and Processes
Datasheets
Calibration Management System
Technicians with Uniform Technical Training

Expert, Certified Technicians

Many of our skilled technicians are ASQ Certified. Transcat Technicians have an average of 15 years’ experience and participate in ongoing training and skill development.

A Difference You Can See

Customers trust Transcat because they can see the difference for themselves. Get a close look at our calibration certificate comparison to see the Transcat Difference for yourself. The comparison below looks at certificates by Transcat and a competitor, both calibrating a Hart Scientific 5614 and calls out the key differences.

1. Each of these certificates provides a statement defining when the company will provide uncertainties.

Transcat

Transcat provides a definition of uncertainties, how the Test Uncertainty Ratio (TUR) is calculated.
Uncertainties are provided anytime the TUR is less than 4:1 or when the customer selects that level of service.
Transcat states they use a TUR of 4:1 or better unless otherwise noted, and that a 4:1 TUR or greater provides reasonable confidence the item being calibrated is within the stated tolerance.

Competitor

The Competitor states “TAR or TUR is less than or equal to 4:1 unless otherwise noted”. In order to have reasonable confidence that the item being calibrated is within the stated tolerance the accuracy of the asset doing the calibration needs to be higher than the item being calibrated. Less than 4:1 does not provide the confidence customer needs.

2. When looking at the set points the best practice for the calibration of Standard Platinum Resistance Thermometers is to use fixed points where possible. Fixed point cells provide much better uncertainties and better TUR’s than comparison points.

Transcat

For the Hart Scientific 5614 probe, Transcat uses the Freezing Point of Tin, the Freezing Point of Zinc, Triple Point of Water, Triple Point of Mercury, and Triple Point of Argon as the fixed points. Transcat uses fixed points whenever possible.

Competitor

The Competitor only uses one fixed point cell, the Triple Point of Water (TPW). This process will give poorer uncertainties.

3. Another best practice is to test the full range of the item being calibrated. This ensures that no matter what interval of the range the customer uses the item, they can be confident in its readings.

Transcat

Using the fixed points available, Transcat tested the probe (range of -200°C to 420°C) at -195.7564°C, -38.8350°C, 0.0100°C, 231.9280°C and 419.5270°C.

Competitor

The Competitors highest tested point was 300° Celsius which is not adequate for a 420° Celsius probe. (range of -200°C to 420°C) at -196.000°C, -38.8000°C, 0.0100°C, 95.0000°C, and 300.0000°C. The last point is under 100 degrees from the high end of the probe’s range.

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