Accurate enough for lab use, and rugged and portable enough to take anywhere
• Best-performing industrial heat sources (accuracy, stability, uniformity) in the world
• Immersion depth to 203 mm (8 in)
• Optional ITS-90 reference input reads PRTs to ±0.006 °C
• Temperature range from –45 °C to 700 °C

Every once in a while, a new product comes around that changes the rules. It happened when we introduced handheld dry-wells. It happened when we introduced Micro-Baths. Now we’ve combined bath-level performance with dry-well functionality and legitimate reference thermometry to create Metrology Wells.

With groundbreaking new proprietary electronics from Fluke Calibration's (patents pending), Metrology Wells let you bring lab-quality performance into whatever field environment you might work in. New analog and digital control techniques provide stability as good as ±0.005 °C. And with dual-zone control, axial (or “vertical") uniformity is as good as ±0.02 °C over a 60 mm (2.36 in) zone. (That’s 60 mm!) Such 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, for example, in the document EA-10/13): calibrated display accuracy, stability, axial (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 Wells.

(By the way, Metrology Wells are the only products on the market supported by published specifications addressing every performance category in the EA-10/13. Our specs aren’t just hopes or guidelines. They apply to every Metrology Well we sell.)

IR thermometer with type K thermocouple capability



Lighten up your toolbox. The Fluke 561 contact and IR thermometer combines the temperature measurement functionality needed by industrial, electrical and HVAC/R professionals, all in one tool. It also measures infrared and contact temperature, eliminating the need to use separate test equipment. Fast, efficient and easy to use, saving you valuable time and effort.



With the Fluke 561 infrared thermometer , you can also take contact and ambient temperature measurements in the way that suits you best. Use an IR thermometer to instantly measure hot, moving, electrified and hard-to-reach objects. Inspect motors, insulation, circuit breakers, radiant heat, pipes, corroded joints, and cables. Plus, scans for ducts, and other hard-to-reach objects, right from the floor. Just leave your ladder in the truck. You can use the flexible and handy Fluke 561 scanner tubing, or plug in any thermocouple probe with the industry standard mini-type K connector you already have to measure superheat or internal temperature.

Great performance in portable instruments
• Lightweight and very portable
• Accuracy to ±0.25 °C
• RS-232 interface
• Easy to recalibrate

If you’ve been using a dry well calibrator or dry block calibrator for field work, you know there’s a lot more to them than temperature range and stability. Size, weight, speed, convenience, and software are also significant.

A field dry well needs to be portable, flexible, and suitable for high-volume calibrations or certifications. If it's not, you’ll soon forget about the great stuff the sales rep told you and realize what you’ve really bought.

At Fluke Calibration, we use dry well calibrators every day in our manufacturing and calibration work, and we know what makes a dry well easy and productive to use—which is exactly how users describe our series of field dry wells. These dry wells work for you instead of the other way around.

Key features
• Lightweight, portable, and fast
• Built-in two-channel readout for PRT, RTD, thermocouple, 4-20 mA current
• True reference thermometry with accuracy to ±0.01 °C
• On-board automation and documentation
• Metrology performance in accuracy, stability, uniformity, and loading