Realizing and Approximating ITS-90, Course Outline

Class size is limited to just 25 people, so register today to reserve a seat!

Download Brochure

Hart Temperature School Faculty

When we say you’ll learn from experts, we mean it. Our faculty includes leading experts from Hart Scientific in temperature metrology, electronics, primary standards, and instrumentation.

We also draw on current and former temperature metrologists from various national labs. Our faculty is not only knowledgeable, they all know how to teach and make your learning experience effective and enjoyable.

“I liked the detail of technical information without much of a sales pitch. It gave me many ideas to use. I also enjoyed the light, casual attitude.”

Buckle up because this is the big one. This is the only course of its kind that is this thorough on realizing and approximating ITS-90. We cover it all!

In this class we’re going to take you on an adventure from 0.01 °C all the way to 0.001 °C, and beyond. We’ll explore SPRT calibrations using fixed-point cells; we’ll teach you the proper way to use a water triple point cell and how often to use it to verify the calibration of your working standards. We’ll show you everything that impacts SPRTs and other laboratory standards down to 0.1 mK.

You’ll learn how SPRTs get contaminated and how to stop it. We’ll demonstrate the usage of fixed-point cells and explain all the alternative methods for using fixed points in your lab.

Don’t just bring your questions; bring the hardest, most unusual temperature calibration questions you can think of. We’ll answer them. Nobody explains the problems, theories, and techniques of 1 mK work better than we do! Previous attendees from some of the best labs in the world tell us that what we’re promising you is what we delivered to them. It’s two-and-a-half days of temperature calibration camp at its best!

Course length: 2½ days
Class size: 25

Day 1 - Realizing the Scale

ITS-90 Introduction

History of ITS-90
Learn how and why the scale changed

Fixed-Point Fundamentals

Fixed-point temperature vs. Kelvin thermodynamic temperature scale
Uncertainties

Practical Fixed-Point Realization

In-depth review of each fixed-point
Equipment: cells, apparatus, bridges
Methodology & procedures
Fixed-point realization demonstrations

Resistance Thermometers

SPRTs
HTPRTs
Annealing procedures

Day 2 - Approximating the Scale

Theory

Choosing to do comparison
calibrations

Techniques

Getting the most accuracy
How to select calibration points
How to choose a technique
“How to” demonstrations

Equipment

Classes of PRTs
Precision thermistors
Heat sources: LN2, furnaces, baths
Readouts: DMMs, “thermometers”

Uncertainty

Error analysis
Calculating uncertainty
Statistical process control

Day 3 - Demonstrations

Zinc freeze-point
–196°C in the LN2 Comparitor
Initiate the Triple Point of Water
Advanced readout/bridge technology
Math applications
Panel discussion

Course	Industrial Calibration	Temperature Metrology	ITS-90 Seminar
Qualifications and Prerequisites	None	Some experience in sensor calibrations	Some experience with comparison calibration techniques; some familiarity with the ITS-90
Typical Uncertainties Discussed	±5°C to ±0.1°C	±0.5°C to ±0.005°C	±0.1°C to ±0.001°C
Coverage of Fixed Points	Brief introduction to water triple point cells; demonstration of mini TPW cells.	Theory, demonstrations, and hands-on experience with water triple point cells.	Theory of all ITS-90 fixed points; demonstrations of TPW freeze and tin and gallium realizations.
Who Should Come	Anyone new to temperature metrology and anyone performing in-field calibrations of working sensors—typically using portable calibrators—with or without reference thermometers.	Those responsible for calibrating in-field standards. Metrologists who do not work heavily with ITS-90 fixed points, but who seek lower uncertainties through comparison calibrations.	Metrologists responsible for calibrating SPRTs or other laboratory standards. Those seeking the lowest possible uncertainties through comparison or fixed-point calibrations.

Go to the Course Registration Form

Click to request a quote, catalog, or other literature. Or call us at 1-800-438-4278.

Home | What's New | Products | Support | U.S. Cal Lab | European Cal Lab | Accreditation |Training | Events | Publications |Contact Hart | International | Links | Fun Stuff | Software | Contents