Comparison Summary
The Additel 875-155-A-110V and Fluke 9142-A-156 are fast and portable low temperature dry well calibrators with metrology-level performance in stability, uniformity, accuracy and loading effect. Differences in cosmetic appearance, communication interface, heating and cooling time and the temperature ranges at 23 °C of these dry well calibrators are some of the major points that set them apart - the Additel 875-155-A-110V offers a wider temperature range of -40 °C to 155 °C whereas the temperature on the Fluke 9142-A-156 ranges from -25 °C to 150 °C.
The Additel 875-155-A-110V comes with a 6.5 inch color touch screen display, dual zone control, and self calibration feature. The self calibration feature allows the user to run an automated calibration of the internal control sensor using their external reference. With literally a few selections, the calibration will run automatically - giving you a fresh, traceable calibration of the control sensor which will improve its accuracy. The display accuracy is at ±0.18 °C at full range. It takes 13 minutes to heat from -40 °C to 155 °C and 28 minutes to cool from 155 °C to -40 °C. It communicates using USB Type A & B, RJ45, WiFi, and Bluetooth interface.
The Fluke 9142-A-156 dry well, or "Metrology Well" as it is known, comes with an LCD display, dual zone control, and an IEC-17025 NVLAP-accredited calibration certificate, which is backed by a robust uncertainty analysis that considers temperature gradients, loading effects, and hysteresis. Each calibration is backed with a 4:1 test uncertainty ratio. The display accuracy is at ±0.2 °C at full range. It takes 25 minutes to heat from -25 °C to 150 °C and 25 minutes to cool from 150°C to -23 °C. It communicates using RS-232 and 9930 interface-it control software.
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