Fluke has introduced the new 1594A/1595A Super-Thermometers from Hart Scientific, designed to combine accuracy, value and innovative features for calibration of SPRTs, PRTs and thermistors. The Super-Thermometers are accurate enough for the primary laboratory, providing accuracy as good as 0,06 ppm (0,000015°C), and economical enough for the secondary lab. Metrologists can confidently expect that every measurement made with these thermometers falls within expected limits and can be verified at any stage.
Ratio self-calibration for confidence in every measurement – The 1594A and 1595A feature ratio self-calibration that enables users to test the accuracy or calibrate the resistance ratio linearity of the Super-Thermometer’s measurement circuit regularly, easily, and without requiring any external devices or special training. Metrologists can now verify accuracy and performance automatically in about thirty minutes. Measurement circuit defects would be detected and reported automatically.
Calibrate internal reference resistors – Users can also calibrate the thermometer’s internal reference resistors using the resistance calibration function and an external standard resistor. Once the calibration is complete, the Super-Thermometer reports the results to the display and provides the option to write the results to a USB memory device.
Low measurement noise – Measurement noise is caused by electrical effects and other random errors that can negatively influence measurement accuracy. New design innovations incorporated into the Super-Thermometer reduce noise and interference in the digital thermometry bridge. In a typical temperature calibration application, uncertainty due to measurement noise is as low as 0,00002°C.
Fast measurement speed – Super-Thermometers offer speeds up to one second per measurement (full accuracy with a two second sample rate). This means users can complete tests quickly, track temperature changes more accurately and evaluate thermal response in sensors. When measuring fixed-point temperatures that require the highest levels of accuracy and lowest levels of noise, users have complete control to change the measurement speed to meet their requirements.
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