A new standard in accuracy and versatility.
Measure, graph and record three sensor types with one tool. The Fluke 1523/24 Reference Thermometer readouts deliver high accuracy, wide measurement range, logging, and trending, all in a handheld tool you can take anywhere. For top accuracy, a memory chip inside the probe connector feeds probe calibration information to the readout. In addition, any thermocouple with a mini-thermocouple connector can be read using the optional universal thermocouple adapter. Choose the 1523 for single channel or the 1524 for dual channel measurement.

Monitor trends in the lab or in the field
See trends graphically on the 1523/24 thermometer's 128x64-backlit LCD display. You can change the graph's resolution at the touch of a button. Now it is easy to see when the temperature is stable (without statistics or long delays) or to monitor processes over time to verify correct operation.

Hold readings on the display at the touch of a button, or document up to 25 readings and associated statistics for easy retrieval. Statistics include the average maximum and minimum values, and the standard deviation. View them through the display or by uploading it to a PC via RS-232 connection and 9940 I/O Took Kit software, included free. To monitor and log more data over time, use a PC and optional LogWare II software.

RS-232-to-USB adapters are available for those who prefer USB connectors. Battery power lasts at least 20 hours on three AA batteries, or use the dc power adapter for extended periods of measurement. Power saving features can be enabled or disabled for longer battery life or greater convenience.

INFO-CON connectors ensure correct temperature conversion
Inside the INFO-CON, a memory chip keeps calibration information for the attached probe. Simply plugging in the probe uploads the information to the readout. The connector transfers this information to the 1523/24 automatically, ensuring the correct temperature conversion for accurate, hassle-free measurements.

Probes may be locked by password to specific channels and readouts for security or for system calibration traceability. Plug any thermocouple with mini-thermocouple jacks into an optional universal thermocouple adapter for convenient measurement. Each thermocouple adapter or standard connector supports reference junction compensation (RJC) with its own internal precision thermistor.

Specifications	1523	1524
Measurement Capability	Single Channel: 4-wire RTD, Thermistor, TC, Resistance, Voltage	2 Channel: 4-wire RTD, Thermistor, TC, Resistance, Voltage
Graphing	Yes
Documenting	25 readings
Auto Logging	None	15,000 readings
Statistics	Avg, Stdev, Max, Min
Internal real-time clock	No	Yes
Units	°C, °F, Ω, mV
Environmental Conditions	13 °C to 33 °C and 0 to 90% RH
Storage Temperatures	-20 ° to 70 °C
Resolution and Best Accuracy	PRT & RTD: 0.001 °, ±0.011 °C Thermistor: 0.001 °C, ±0.002 °C Thermocouple: 0.01 °, ±0.22 °C
TC RJC Accuracy	±0.2 °C
TC Types	J, K, T, E, R, S, B, L, U, C, M and N
Dimensions WxHxL	96x200x47 mm
Weight	0.65 kg
Computer Interface	RS-232 – SCPI protocol
Baud Rate	2400, 9600
Power Requirements	3 AA batteries, DC universal power supply
Min. Battery Life	20 hours
Calibration	NIST-Traceable Certificate of Calibration included

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Sample Graphing Display

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T(°C)	5615-6	5627A-12	5610-9
-200	0.025	0.027	n/a
0	0.021	0.049	0.009
100	0.028	0.065	0.009
300	0.043	0.103	n/a
420	n/a	0.130	n/a

Accuracies of selected readout/probe combinations (±°C)
Includes readout accuracy, probe calibration, and probe drift

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Hart Scientific 1523 / 1524 Reference Thermometers
1523	Reference Thermometer, Handheld, 1 Channel
1524	Reference Thermometer, Handheld, 2 Channel, Data Logger
1523-CASE	1523/1524 Readout and Probe Carrying Case
TPAK80-4	TPAK, Meter Hanging Kit
2373-LPRT	Adapter, Lemo to Mini Grabbers (4-wire)
2373-LTC	Adapter, Lemo to Universal TC (TC)
2384-P	Smart Connector, PRT (Gray Cap), Spare
2384-T	Smart Connector, TC (Blue Cap), Spare
Hart Scientific 1523 / 1524 Reference Thermometers
5615-6-P	Secondary Standard PRT, 4.76 mm x 152 mm (0.188 x 6.0 in), –200 to 300 °C
5627A-12-P	Secondary PRT, 305 mm x 6.35 mm (12 x 1/4 in), –200 °C to 420 °C
5610-9-P	Secondary Thermistor, 229 mm (9 in) Immersion Probe, 0 to 100 °C