Fluke 1502A - reference thermometer

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MPN: 1648930

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Vyhodnocovacie zariadenie Hart Scientific 1502A dosahuje presnosti merania až ±0,006 °C (model Hart Scientific 1504 je dokonca ešte presnejší, až ±0,002 °C). Naviac pri použití so sondami 100-ohm, 25-ohm a 10-ohm dosahuje rozlíšenie až 0,001 °C v celom rozsahu merania. Tento najmenší prístroj vo svojej triede je možné používať aj s voliteľnou batériovou sadou a tak zvýšiť prenosnosť pri kalibrácii.

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Short specification
Manufacturer	Fluke Calibration
Ordering code	1648930

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.

Specifications	1502A	1504
Temperature Range^†	–200 °C to 962 °C (–328 °F to 1764 °F)	Any thermistor range
Resistance Range	0W to 400W, auto-ranging	0W to 1 MW, auto-ranging
Probe	Nominal R_TPW: 10W to 100W 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)	0W to 20W: 0.0005W 20W to 400W: 25 ppm	0W to 5 KW: 0.5W 5 KW to 200 KW: 100 ppm 200 KW to 1 MW: 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 KW thermistor sensor, a=0.04. Does not include probe uncertainty or characterization errors.)
Operating Temperature Range	16 °C to 30 °C	13 °C to 33 °C
Resistance Resolution	0W to 20W: 0.0001W 20W to 400W: 0.001W	0W to 10 KW: 0.01W 10 KW to 100 KW: 0.1W 100 KW to 1 MW: 1W
Temperature Resolution	0.001 °C	0.0001 °C
Excitation Current	0.5 and 1 mA, user selectable, 2 Hz	2 and 10 mA, automatically selected
Measurement Period	1 second
Digital Filter	Exponential, 0 to 60 seconds time constant (user selectable)
Probe Connection	4-wire with shield, 5-pin DIN connector
Communications	RS-232 serial standard IEEE-488 (GPIB) optional
Display	8-digit, 7-segment, yellow-green LED; 0.5-inch-high characters
Power	115 VAC (±10 %), 50/60 Hz, 1 A, nominal 230 VAC (±10 %), 50/60 Hz, 1 A, nominal, specify
Size (HxWxD)	61 x 143 x 181mm (2.4 x 5.6 x 7.1 in)
Weight	1.0 kg (2.2 lb.)
Probes from Hart	5615, 5627, 5626, 5628, 5622	5640-44, 5610-65
Calibration	Accredited NIST-traceable calibration provided
†Temperature ranges and accuracy may be limited by the sensor you use.