Calibration Spotlight: Hart Scientific 1590 Super-Thermometer II

What Is a Super-Thermometer?

Metrology laboratories around the world rely on super-thermometers for their reliably accurate, easy-to-take measurements.  For instance, the Hart Scientific 1590 Super-Thermometer II reads accurately to 0.00025°C or 1 ppm. This high degree of accuracy makes super-thermometers perfect for calibration of SPRTs (Standard Platinum Resistance Thermometers). Further, they are the best lab instruments to take advantage of SPRT accuracy. They read temperature directly, automate data collection, and calculate constants for ITS-90. Additionally, the large LCD screen of the 1590 Super-Thermometer II features a live graph which records temperature trends during calibration.  This allows PTS technicians to see when the temperature has stabilized enough to ensure an accurate reading.

The Hart Scientific 1590 Super Thermometer II features a large LCD with live readings for calibration technicians.

How Does PTS Use the Super-Thermometer II?

The typical benchtop thermometer has an error level twenty to forty times larger than the Super-Thermometer II. However, the resolution of the 1590 with a 25-ohm SPRT is 0.000125°C. Because of this,  the 1590 Super-thermometer II can easily calibrate Platinum Resistance Thermometers (PRTs), Resistance Temperature Devices (RTDs), thermistors, thermocouples, and related measurement devices. As a key provider in the scientific services calibration industry, PTS services all manner of temperature devices. As an ISO:17025 accredited organization, we meticulously catalog uncertainty data for our 1590. Customers may request this data as needed.

SPRTs interpolate temperature according to the International Temperature Scale of 1990 (ITS-90). In use, the AM1960 covers the range from -200 °C to 670 °C.

We paired our 1590 Super-Thermometer II with a quartz-sheathed SPRT Accumac AM1960. This allows accurate measurements up to 600°C.  This instrument gives PTS the ability to calibrate all temperature devices in-house. Because of this, we have more time to devote to serving our customers. This ensures our turn around time is quick and efficient to minimize the time you are without your instrument. You won’t wait six weeks (or longer!) to receive your PRT or temperature device back from calibration. You can rest assured knowing your temperature device will be calibrated to its greatest degree of accuracy from PTS.