产品介绍
1502A/1504 Thermometer Readouts
Best performance thermometers in their price range
Two Tweeners to choose from—reading PRTs or thermistors
Battery packs available
Best price/performance package
One of Fluke Calibration's best-selling products is the Tweener thermometer,
and there’s a reason. No other company, not one, has a reference thermometer
that comes close to the performance and features of the Tweener for
anywhere near its price.
1502A Tweener PRT Readout
The 1502A Hart Scientific 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 optiona
l 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.
Software
With our 9934 LogWare, both Tweener models may be used for real-time
data acquisition. Collect data and analyze it graphically or statistically.
Additionally, Tweeners may be used as reference thermometers with our
MET/TEMP II software.
Battery pack
Want to take your Tweener on the road? Order Fluke Calibration's 9320A
Battery Pack. Our battery gives you 36 hours between charges, allowing
you to take your work wherever you need.
Calibration choices
Each Tweener and its accompanying probe (sold separately) have their
own individual calibration reports. Overall system error can be calculated
from the individual errors, rendering the added cost of system data
unnecessary. However, for those requiring it, system data is available
at two or more temperatures of your choice. (See Calibration Model 1929-X )
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