Metrology Well, -30 to 155°C, Insert D, Reference Readout, 115V

Dry-wells are typically calibrated by inserting a calibrated PRT into one of the wells and making adjustments to the calibrator’s internal control sensor based on the readings from the PRT. This has limited value because the unique characteristics of the reference PRT, which essentially become “calibrated into” the calibrator, are often quite different from the thermometers tested by the calibrator. This is complicated by the presence of significant thermal gradients in the block and inadequate sensor immersion into blocks that are simply too short.

Metrology Wells are different. Temperature gradients, loading effects, and hysteresis have been minimized to make the calibration of the display much more meaningful. We use only traceable, accredited PRTs to calibrate Metrology Wells and our proprietary electronics consistently demonstrate repeatable accuracy more than ten times better than our specs, which range from ±0.1 °C at the most commonly used temperatures to ±0.25 °C at 661 °C.

An application note is available to help better understand the uncertainties mentioned above.

This Model

Fluke Calibration 9171-D-R Metrology Well. Insert “D”, Al, Comparison Metric Holes. –30°C to 155°C

Included

• INSX
• Built-In Reference

Key Features

• Exceptional stability (±0.005 °C) and axial uniformity (±0.02 °C over a 60 mm zone).
• Immersion depth to 203 mm (8 in)
• Optional ITS-90 reference input reads PRTs to ±0.006 °C
• Wide Temperature range from –45 °C to 700 °C

The Fluke Calibration Metrology Well, -30 to 155°C, Insert D, Reference Readout, 115V # 9171-D-R-156 is manufactured by Fluke Calibration. Valley Instrument Service is an authorized Fluke Calibration dealer offering full sales support, NIST-traceable calibration, and expert technical assistance.