Fluke Calibration 1502A/1504 Thermometer Readout

Model#: Fluke 1502APart#: 1648927UPC#: 0 95969 12019 7
  • Fluke Calibration 1502A/1504 Thermometer Readouts

Key features

  • 1502A: accuracy up to ±0.006 °C.
  • 1504: accuracy up to ±0.002 °C plus ability to measure thermistor temperature sensors.
  • 1502A: covers –200°C to 962°C
  • 1504: covers 0 to 100°C
  • Can take readings up to twice per second, making the calibration process faster.

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Product overview: Fluke Calibration 1502A/1504 Thermometer Readout

Precision thermometer readouts for laboratory and field use

1502A Tweener PRT Readout

The Fluke Calibration 1502A Tweener offers precision temperature measurement with:

  • Accuracy up to ±0.006 °C
  • Resolution of 0.001 °C across the entire range
  • Compatibility with 100-ohm, 25-ohm, and 10-ohm RTD probes
  • Smallest unit in its class, ideal for field or bench use

Advanced Features

  • Programmable to match a probe’s constants for maximum linearity and accuracy
  • Displays temperature in °C, °F, K, or resistance in ohms
  • Reads standard industrial IEC-751 / “385 ALPHA” RTDs with no programming required
  • Accepts ITS-90 subranges 4 and 6–11, with formulas built into firmware
  • Calibration is done digitally via front-panel—no need to open the device
  • Comes with RS-232 interface; optional IEEE-488 interface available

1504 Tweener Thermistor Readout

Need higher precision in a narrower temperature range? The Model 1504 Tweener offers:

  • Accuracy up to ±0.002 °C
  • Resolution of 0.0001 °C
  • Designed specifically for thermistors—more robust, shock-resistant sensors with faster response times
  • Ideal for applications requiring high sensitivity and reliability in limited temperature spans

Software Compatibility

Enhance your workflow with Fluke software tools:

  • 9934 LogWare: Real-time data acquisition, graphing, and analysis
  • MET/TEMP II: Use Tweeners as reference thermometers for automated calibrations

Specifications: Fluke Calibration 1502A/1504 Thermometer Readout

Specifications1502A1504
Temperature Range†−200 °C to 962 °C (−328 °F to 1764 °F)Any thermistor range
Resistance Range0 Ω to 400 Ω, auto-ranging0 Ω to 1 MΩ, auto-ranging
ProbeNominal RTPW: 10 Ω to 100 Ω
RTD, PRT, or SPRT		Thermistors
CharacterizationsITS-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 to 20 Ω: 0.0005 Ω
20 Ω to 400 Ω: 25 ppm		0 Ω to 5 KΩ: 0.5 Ω
5 KΩ to 200 KΩ: 100 ppm
200 KΩ to 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 Range16 °C to 30 °C13 °C to 33 °C
Resistance Resolution0 Ω to 20 Ω: 0.0001 Ω
20 Ω to 400 Ω: 0.001 Ω		0 Ω to 10 KΩ: 0.01 Ω
10 KΩ to 100 KΩ: 0.1 Ω
100 KΩ to 1 MΩ: 1 Ω
Temperature Resolution0.001 °C0.0001 °C
Excitation Current0.5 and 1 mA, user selectable, 2 Hz2 and 10 µA, automatically selected
Measurement Period1 second
Digital FilterExponential, 0 to 60 seconds time constant (user selectable)
Probe Connection4-wire with shield, 5-pin DIN connector
CommunicationsRS-232 serial standard
IEEE-488 (GPIB) optional
Display8-digit, 7-segment, yellow-green LED; 0.5-inch-high characters
Power115 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)
Weight1.0 kg (2.2 lb.)
CalibrationISO 17025-accredited calibration provided
†Temperature ranges and accuracy may be limited by the sensor you use.

Models: Fluke Calibration 1502A/1504 Thermometer Readout

Fluke 1502A
Fluke Calibration 1502A-156 Thermometer Readout
−200°C to 962°C (−328°F to 1764°F)
Part#: 1648927
UPC#: 0 95969 12019 7
1502A-2506
Tweener PRT Readout, with IEEE-488

Fluke 1504
Fluke Calibration 1504 Thermometer Readouts
Any thermistor range
Part#: 1648966
UPC#: 0 95969 12023 4
1504-2506
Tweener Thermistor Readout, with IEEE-488

9934-M
LogWare, Single Channel, Multi User
Part#: 1658732
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