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Thermometer Readouts

fluke_logo The “DewK” Thermo-Hygrometer
  

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Two years ago the 1620 DewK revolutionized environmental monitoring for calibration labs, but it just got better. Wait until you hear about the 1620A!

Now you can easily monitor and record conditions throughout your entire facility with the DewK’s new Ethernet and wireless connections, and set your upgraded LogWare III software to notify you immediately of changing conditions.

You’ll still have the superior convenience, dependability, and NIST-traceable accuracy of a 1620, but your 1620A will give you the added accessibility and peace of mind you’ve been looking for.

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fluke_logo 1521/1522 Thermometer Readouts
  

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With the Super-Thermometer, Black Stack, and Tweener thermometers, Hart established itself as the clear product leader for thermometer readouts. Our pattern of offering more power and more versatility for less money is indisputable. Another case in point: Hart offers the two most powerful handheld thermometers in the world.

The Models 1521 and 1522 are the first standards thermometers to fit into a battery-powered handheld package. They’re as accurate as ±0.005°C! You’ll only find this level of accuracy in large desktop units that cost three times more. It’s no wonder we call the 1521 the Little Lord Kelvin of thermometry.

Fitting easily into your hand and weighing only 1 pound (0.4 kg), these thermometers can go anywhere. And when they get there, you can have total confidence in the accuracy of your measurements. The 1522 has the power of a full data logger, with memory to hold 10,000 readings.

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fluke_logo 1502/1504 Thermometer Readouts
  
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One of Hart’s best-selling products is the Tweener thermometer, and there’s a reason. No other company, not one, has a thermometer that comes close to the performance and features of the Tweener for anywhere near its price.

1502A Tweener PRT Readout
The 1502A Tweener features accuracy up to ±0.006 °C (the 1504 is even more accurate, up to ±0.002 °C). In addition, it reads 100-ohm, 25-ohm, and 10-ohm probes, has a resolution of 0.001 °C across its entire range, and is the smallest unit in its class. It also has an optional battery pack for completely portable operation.

Each Tweener is programmable to match a probe’s constants for maximum linearity and accuracy. All probe constants and coefficients are programmed through simple, front-panel keystrokes. Temperature is displayed in °C, °F, K, or resistance in ohms.

The 1502A accurately measures the resistance of the probe and then converts the resistance to a temperature value using its built-in algorithms.

For convenience, the 1502A reads the common industrial grade IEC-751 or “385” ALPHA RTD without any programming. Enter the actual R0 and ALPHA of the individual probe for increased accuracy. For maximum accuracy, use the ITS-90 formulas. The Tweener accepts the subranges 4 and 6 through 11.

ITS-90 formulas reside in the Tweener’s firmware. If your probe has been calibrated for any of the above subranges of the ITS-90, you simply enter the coefficients directly into your Tweener.

Each thermometer comes complete with an RS-232 interface for automation of temperature data collection, calibrations, or process control functions. An IEEE-488 interface is available as an option.

The 1502A is calibrated digitally using the front-panel buttons. You never have to open the box to calibrate it. This calibration protocol further reduces the cost of the 1502A. It goes where you go and works the way you want it to.

1504 Tweener Thermistor Readout
If you need more accuracy in a limited temperature range, the Model 1504 Tweener gives it to you as a thermistor readout. Thermistors are less fragile than PRTs and less likely to be impacted by mechanical shock. Thermistors are more sensitive to temperature, have faster response times, and come in many shapes for different applications.

Typical accuracy of a 1504 is ±0.002 °C with a resolution of 0.0001 °C.

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fluke_logo 1529 Thermometer Readout
  
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So you need multiple channels, battery power, outstanding accuracy, and the ability to read many different sensor types—but you don’t need all the power of a 1 ppm Super-Thermometer. We have the answer for you.

Hart’s 1529 Chub-E4 Thermometer gives you four channels, three major sensor types, lab-quality accuracy, and a ton of great features, all at a price you’ll love.

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fluke_logo 1560 Thermometer Readout   pic_05
   

Hart’s Black Stack thermometer has been on the market for five years and has established itself as one of the most versatile, cost-effective, accurate readouts in the world.

Nothing about this instrument says ordinary. Traditionally, thermometers were square boxes configured to do one particular job—such as read a calibrated PRT. However, if you also wanted to measure thermistors, you had to buy another instrument that could do this specific task. Some thermometers can do multiple jobs, but they’re expensive, complex, and difficult to use. You’re paying for functions you don’t need and may never use. The Black Stack solves these problems and more.

The 1560 Black Stack can be any kind of thermometer you want it to be, and it works in three distinctive ways.

It’s a reference thermometer with a NIST traceable calibration; it’s an automated calibration system reading your reference probe and sensors you’re testing; or it’s a high-accuracy data acquisition system. And it does each of these functions better than any other thermometer currently on the market.

The Stack consists of up to eight different modules that fit together to do any type of thermometry you choose. You can buy all of them, or any combination of them, and change the Stack and its functions anytime you want. Each module stacks behind the preceding one, and when you add a module, the Stack’s software automatically reconfigures itself to include all of the new functions supplied by that module. There’s nothing to take apart. No boards need to be installed. There’s no software to load, and nothing has to be calibrated. Just stack a new module onto the back of the previous modules and you’re ready to use the Black Stack and all of its remarkable features.

Hart’s new Model 9935 Multi Channel LogWare makes the Black Stack an even more powerful data acquisition tool. LogWare provides graphical and statistical analysis of each channel you’re measuring (up to 96 with the Black Stack). And with alarms that can be customized, delayed start times, and selectable logging intervals, LogWare turns the Black Stack into the most powerful temperature data acquisition tool on the market.

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fluke_logo 1575 and 1590 Super Thermometers   pic_05
   

Hart’s Super-Thermometers are recognized in metrology laboratories around the world for their ease of use and reliable accuracy. The Model 1575A Super-Thermometer is accurate to 0.001 °C. The Model 1590 Super-Thermometer II is accurate to 0.00025 °C, or 1 ppm.

Both Super-Thermometers are perfectly suited for SPRT calibrations. These are the best lab instruments to take advantage of SPRT accuracy. They’re easy to use, they read temperature directly, they have automated data collection, they automatically calculate constants for ITS-90, and both of them are priced at less than half the price of the competitors’ resistance bridges.

Of course, there’s more.

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