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Accurate for the lab yet rugged and portable enough for the field
- - Best-performing dry block (accuracy, stability, uniformity) in the world
- - Immersion depth up to 8 inches
- - Optional ITS-90 reference sensor input reads PRTs to ±0.006 °C
- - Models with Temperature ranges from -45 °C to 700 °C
With groundbreaking new proprietary electronics from Fluke Calibration's (patents pending), dry block Metrology Wells let you bring lab-quality performance into whatever field environment you may work in. New analog and digital control techniques provide stability as good as ±0.005 °C. And with dual-zone control, axial uniformity is as good as ±0.02 °C over a 60 mm (2.36 in) zone. This type of performance doesn’t exist anywhere else outside of fluid baths.
In short, there are six critical components of performance in an industrial heat source (which the European metrology community explains in EA-10/13): calibrated display accuracy, stability, vertical uniformity, radial (well-to-well) uniformity, impact from loading, and hysteresis. We added a seventh in the form of a legitimate reference thermometer input and created an entirely new product category: Metrology Grade Wells.
These Metrology Grade Wells are the only products on the market supported by published specifications addressing every performance category in the EA-10/13.
The Model 9173 provides unmatched performance between 50 °C and 700 °C. The 9173 has a display accuracy of ±0.25 °C at 700 °C and an immersion depth of 203 mm (8 in). Stability and uniformity performance of this unit are enough to dramatically reduce uncertainty budgets for calibrations of thermometers at high temperatures.
Insert Options: 
| Range (at 23°C ambient) | 50°C to 700°C1 (122°F to 1292°F) | ||
| Display accuracy | ±0.2°C: 50°C to 425°C ±0.25°C: 425°C to 660°C | ||
| Stability | ±0.005°C: 50°C to 100°C ±0.01°C: 100°C to 425°C ±0.03°C: 425°C to 700°C | ||
| Axial uniformity | ±0.1°C: 50°C to 100°C ±0.25°C: 100°C to 425°C ±0.4°C: 425°C to 700°C | ||
| Radial uniformity | ±0.01°C: 50°C to 100°C ±0.025°C: 100°C to 425°C ±0.04°C: 425°C to 700°C | ||
| Loading effect (with a 6.35 mm reference probe and three 6.35 mm probes) | ±0.02°C at 425°C ±0.04°C at 700°C | ||
| Hysteresis | 0.07°C | ||
| Well depth | 203 mm (8 in) | ||
| Resolution | 0.001°C | ||
| Display | LCD, °C or °F, user-selectable | ||
| Key pad | Ten key with decimal and ± button. Function keys, menu key, and °C / °F key. | ||
| Cooling time | 235 min: 700°C to 50°C 153 min: 700°C to 100°C | ||
| Heating time | 46 min: 50°C to 700°C | ||
| Size (H x W x D) | 366 x 203 x 323 mm (14.4 x 8 x 12.7 in) | ||
| Weight | 15 kg (33 lb) | ||
| Power | 115 V AC (±10%), or 230 V AC (±10%), 50/60 Hz, 1025 W | ||
| Computer interface | RS-232 Interface with 9930 Interface-it control software included | ||
| Traceable calibration (NIST) | Data at 100°C, 200°C, 350°C, 500°C, and 660°C | ||
| 1. Calibrated to 660°C; reference thermometer recommended at higher temperatures. | |||
| Specifications | Built-in Reference Input | ||
| Temperature range | –200°C to 962°C (–328°F to 1764°F) | ||
| Resistance range | 0 Ω to 400 Ω, auto-ranging | ||
| Characterizations | ITS-90 subranges 4, 6, 7, 8, 9, 10, and 11 Callendar-Van Dusen (CVD): R0, a, b, d | ||
| Resistance accuracy | 0 Ω to 20 Ω: 0.0005 W 20 Ω to 400 Ω: 25 ppm | ||
| Temperature accuracy (does not include probe uncertainty) | 10 Ω PRTs: ±0.013°C at 0°C ±0.014°C at 155°C ±0.019°C at 425°C ±0.028°C at 700°C | 25 Ω and 100 Ω PRTs: ±0.005°C at –100°C ±0.007°C at 0°C ±0.011°C at 155°C ±0.013°C at 225°C ±0.019°C at 425°C ±0.027°C at 661°C | |
| Resistance resolution | 0 Ω to 20 Ω: 0.0001 Ω 20 Ω to 400 Ω: 0.001 Ω | ||
| Measurement period | 1 second | ||
| Probe connection | 4-wire with shield, 5-pin DIN connector | ||
| Calibration | NVLAP accredited (built-in reference input only), NIST-traceable calibration provided | ||
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