Laboratory Dry-Well Calibrators from Hart Scientific

Laboratory Dry-Well Calibrators

• Features
• Specifications
• 9105
• 9107
• 9122A
• 9127
• User's Guides

Features

• World’s best dry-wells—accurate to 0.1°C, stable to ±0.005°C 
• Largest-capacity temperature wells 
• Model 9107 reaches lowest temperatures: –45°C in 23°C ambient 
• Model 9122A provides temperatures to 700°C 

Hart’s dry-wells are the best in this industry, not only because of their performance specs, but because they’re the easiest to use and have a variety of software packages available to fully automate the calibration of sensors. 

These units are specifically built for the demanding requirements of temperature work in calibration labs. Each instrument has excellent stability, uniformity, and accuracy and features Hart’s own proprietary controller for precision work; you can set the temperature with 0.01°C resolution. Our new Model 9107 Ultracold Dry-Well even reaches –45°C in normal room temperatures. 

All four dry-wells come with an RS-232 port and have an optional IEEE interface available. However, unlike the competition, Hart dry-wells include our 9930 Interface-it software for controlling the unit with your PC. And if you want more, buy our 9938 MET/TEMP II software, which totally automates the calibration process for RTDs, thermocouples, and thermistors. 

No other company offers software packages as good as these two from Hart. Our MET/TEMP II software is not entry-level data acquisition stuff. It is a total automation solution for the calibration process. These packages do everything but take the probe out of your dry-well when the calibration process is done, and we’re working on a program that will do that too!

If you don’t want to use a PC with these dry-wells, program them through the front panel to automatically set and hold up to eight temperatures in the sequence and duration of your choice. Each unit also has a “switch test” protocol that locks in the triggering temperature for thermal switches. The dry-well’s ramp rate can be set to a speed of your choosing. 

Each dry-well is completely tested and calibrated before shipment, and we don’t charge extra for the traceability certificate. When accuracy and stability are important to your work, Hart is your best choice, especially when you compare prices. 

9105 

The Model 9105 Dry-Well has a temperature range of –25°C to 140°C with a stability of ±0.01°C. It has four outside wells of various sizes and a removable center well as shown in the illustration. Well-to-well uniformity in the drilled wells is ±0.05°C. 

Used with a standards probe, the 9105 has the test well uniformity and the stability to give you ±0.05°C calibration accuracy. The high-precision, microprocessor-based controller has 0.01 degrees of resolution. 

You recalibrate your 9105 through its front panel, which reduces the cost and problems of recertifying your instrument. It comes with a NIST-traceable calibration at no additional cost, making the 9105 dry-well an even better value. 

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9107 

Need temperatures colder than –25°C? The 9107 Ultracold Dry-Well gets you to –45°C in a 23°C ambient and still covers temperatures as high as 140°C. You won’t find another dry-well anywhere that gets colder—or that is more stable. 

The 9107 features five calibration wells, incredible accuracy, and stability better than ±0.005° over most of its range.  Like the 9105, this ultracold dry-well doesn’t use a compressor and doesn’t require external cooling.  Peltier modules do all the work so you don’t have to worry about external hookups or cold ambient temperatures.  Hart’s dry-wells are simply easier to use and outperform everything else out there. 

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9122A 

Too many probes to calibrate and too little time? The 9122A High Capacity Dry-Well comes with nine test wells, a display calibrated to 660°C, and an upper temperature limit of 700°C. 

Test nine probes simultaneously or eight probes against a reference thermometer. Four of the nine wells accept removable inserts; the other five are drilled for 1/4" (6.35 mm) probes. The center well on the 9122A is accurate to ±0.3°C and stable to ±0.05°C at 660°C. No other unit on the market offers this combination of capacity, temperature range, and performance. 

What’s more, this unit makes a perfect annealing furnace. Reference PRTs (and thermocouples) generally benefit from periodic annealing at high temperatures to remove sensor strain and oxidation build-up. With capacity for nine probes and temperatures to 700°C, the 9122A offers a perfect solution. 

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9127 

For work between 50°C and 600°C, the 9127 is one of our most popular instruments. It has a “smart” controller that automatically increases fan speed for cooling the block and then reduces the fan speed at a specific set-point temperature for maximum stability during calibrations. 

It has an accuracy of ±0.15°C up to 300°C and ±0.5°C to 600°C. Resolution is 0.01°C and stability is ±0.02°C at 300°C. Inserts are available with multiple sensor holes for doing comparison calibrations. Uniformity between holes is ±0.05°C. 

For fast cool-downs of a 9122A or 9127 dry-well, the optional 2032 Air Chiller connects directly to shop air to inject cool air into the well and reduce cooling times by more than 50%. 

User's Guide

Download a product User's Guide in Acrobat (.pdf)  format.

9105-9197 User's Guide - File size is 619 Kb.
9122A User's Guide - File size is 673 Kb.
9127 User's Guide - File size is 677 Kb