1502A / 1504 Thermometer Readout

Best performance PRT and Thermistor thermometers in their price range

Starting at

$5,537.00CAD

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1502A Tweener PRT Readout

The Fluke Calibration 1502A Tweener features accuracy up to ±0.006 °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.

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.

• Two Tweeners to choose from—reading PRTs or thermistors

• Best performance thermometers in their price range

	1502A	1504
Temperature Range^†	−200°C - 962°C (−328°F - 1764°F)	Any thermistor range
Resistance Range	0 Ω - 400 Ω, auto-ranging	0 Ω - 1 MΩ, auto-ranging
Probe	Nominal RTPW: 10 Ω - 100 Ω RTD, PRT, or SPRT	Thermistors
Characterizations	ITS-90 subranges 4, 6, 7, 8, 9, 10, and 11 IPTS-68: R0, a, d, a4, and c4 Callendar-Van Dusen: R0, a, d, and b	Steinhart-Hart thermistor polynomial Callendar-Van Dusen: R0, a, d, and b
Resistance Accuracy (ppm of reading)	0 Ω - 20 Ω: 0.0005 Ω 20 Ω - 400 Ω: 25 ppm	0 Ω - 5 KΩ: 0.5 Ω 5 KΩ - 200 KΩ: 100 ppm 200 KΩ - 1 MΩ: 300 ppm
Temperature Accuracy^†	+/- 0.004°C at −100°C +/- 0.006°C at 0°C +/- 0.009°C at 100°C +/- 0.012°C at 200°C +/- 0.018°C at 400°C +/- 0.024°C at 600°C	+/- 0.002°C at 0°C +/- 0.002°C at 25°C +/- 0.004°C at 50°C +/- 0.010°C at 75°C +/- 0.020°C at 100°C (Using 10 KΩ thermistor sensor, a = 0.04. Does not include probe uncertainty or characterization errors.)
Operating Temperature Range	16°C - 30°C