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1523, 1524 Reference Thermometers
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Personal Greeting

The Fluke Calibration 1523 and Fluke 1524 Reference Thermometers from Fluke Calibration measure, graph, and record PRTs, thermocouples, and thermistors. These thermometer readouts deliver exceptional accuracy, wide measurement range, temperature logging, and trending, all in a handheld tool you can take anywhere.

Make accurate, consistent measurements… anywhere

You need accuracy for compliance, product yields, energy savings, and consistent results. The Fluke 1523 and Fluke 1524 use current reversal, a technique used in high-end instruments that eliminates thermal EMFs, for precision temperature measurements. Specifications are guaranteed from -10 ºC to 60 ºC ambient. Special precision resistors and a highly stable reference voltage source keep 1523/24 accuracy virtually insensitive to environmental temperature.

Like all Fluke handheld tools, the 1523 and 1524 Reference Thermometers endure rigorous testing in temperature extremes and under harsh conditions of vibration, so you can take them anywhere you need to go.

An optional magnetic hanger allows you to hang the thermometer for easy viewing while freeing your hands to focus on the job.

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, 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.

Monitor trends in the lab or in the field

See trends graphically on the 1523 and 1524 thermometers' 128x64-backlit LCD display. You can change the graph’s resolution at the touch of a button. Now it’s easy to see when the temperature is stable, without statistics or long delays, or monitor processes over time to verify correct operation.

Document on demand up to 25 readings and associated statistics for easy retrieval. You can view the data through the display or by uploading it to a PC via RS-232 connection and 9940 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.

Two models let you make the best choice for your application

The 1523 Reference Thermometer is a versatile single-channel thermometer that measures, graphs and records three sensor types with one tool. Support for PRTs/RTDs, thermocouples, and thermistors provides flexibility to choose the right probe for the job.

The  1524 Reference Thermometers help you do twice the work in half the time. Two channels and three sensor types and high-speed measurement make you more productive and make model 1524 the one reference thermometer you need to own. It has all the features of the 1523, and it’s a temperature logger too. A real-time clock and memory for 15,000 time and date stamped measurements mean everything you are going to need is in this package. Log up to three times per second, or once every hour or other options in between. Download the temperature logger data to a PC for analysis when you need it.

Applications

Calibration, loop checking, plant startup, troubleshooting, maintenance, and repair are some of the varied duties that need a 1523 or 1524 thermometer. Use it for a handy temperature reference and temperature logger in baths, dry-block calibrators, thermowells, clean rooms, engines, heat exchangers, furnaces, freezers, or anything else that must be calibrated, checked, or maintained.

Specifications
Input Channels
   1523: 1
   1524: 2
Logging
   1523: 25 readings with statistics
   1524: 15,000 time and date stamped; 25 readings with statistics
Sample interval
(normal)
   1 seconds
Sample interval (fast mode)
   0.3 seconds (see technical manual for details)
Sensor Types
   PRTs, RTDs, Thermistors, and Thermocouples
Thermocouple Types
   C,E,J,K,L,M,N,T,U,B,R,S
Operating temperature
   -10 ºC to 60 ºC (Best accuracy 13 ºC to 33 ºC)
Power requirements
   3 AA alkaline batteries
Size
   96 x 200 x 47 mm
   (3.75 x 7.9 x 1.86 inches)
Weight
   0.65 kg (1.4 lb)
Environmental conditions for best accuracy
   13 °C to 33 °C
Millivolt Range and Accuracy
   –10 mV to 75 mV ± (0.005 % + 5 μV)
Resistance Range and Accuracy
   0 Ω to 400 Ω ± (0.004 % + 0.002 Ω)
   200 Ω to 50 kΩ± (0.01 % + 0.5 Ω)
   50 kΩ to 500 kΩ± (0.03 %)
Temperature Coefficient, Voltage ( –10 °C to 13 °C , +33 °C to 60 °C)
   ± (0.001 %/°C + 1 μV/°C)
Temperature Coefficient, Resistance ( –10 °C to 13 °C , +33 °C to 60 °C)
   0.0008 %/°C + 0.0004 Ω(0 Ω to 400 Ω)
   0.002 %/°C + 0.1 Ω(0 Ω to 50 kΩ)
   0.06 %/°C + 0.1 Ω(50 kΩ to 500 kΩ)
Excitation Current, Resistance
   1 mA (0 Ω to 400Ω)
   10 μA (0 Ω to 50 kΩ)
   2 µA (50 kΩ to 500 kΩ)
Thermocouple equivalent temperature accuracies (readout only)
Type B
   ± 0.85 ºC from 600 ºC to 800 ºC
   ± 0.68 ºC from 800 ºC to 1000 ºC
   ± 0.57 ºC from 1000 ºC to 1800 ºC
Type C
   ± 0.32 ºC from 100ºC to 550 ºC
   ± 0.71 ºC from 550 ºC to 2300 ºC
Type E
   ± 0.52 ºC from -200 ºC to 0 ºC
   ± 0.22 ºC from 0 ºC to 950 ºC
Type J
   ± 0.52 ºC from -200 ºC to 0 ºC
   ± 0.23 ºC from 0 ºC to 1200 ºC
Type K
   ± 0.61 ºC from -200 ºC to 0 ºC
   ± 0.24 ºC from 0 ºC to 1370 ºC
Type L
   ± 0.36 ºC from -200 ºC to 0 ºC
   ± 0.23 ºC from 0 ºC to 1370 ºC
Type M
   ± 0.26 ºC from -20 ºC to 0 ºC
   ± 0.25 ºC from 0 ºC to 400 ºC
   ± 0.22 ºC from 400 ºC to 1400 ºC
Type N
   ± 0.72 ºC from -200 ºC to 0 ºC
   ± 0.28 ºC from 0 ºC to 1300 ºC
Type R
   ± 1.09 ºC from -20 ºC to 0 ºC
   ± 0.97 ºC from 0 ºC to 500 ºC
   ± 0.49 ºC from 500 ºC to 1750 ºC
Type S
   ± 1.05 ºC from -20 ºC to 0 ºC
   ± 0.95 ºC from 0 ºC to 500 ºC
   ± 0.56 ºC from 500 ºC to 1750 ºC
Type T
   ± 0.60 ºC from -200 ºC to 0 ºC
   ± 0.25 ºC from 0 ºC to 400 ºC
Type U
   ± 0.54 ºC from -200 ºC to 0 ºC
   ± 0.24 ºC from 0 ºC to 400 ºC
Note 1:
   Accuracies are based on internal Reference Junction Compensation. Refer to Technical manual for equivalent accuracies with an external reference junction.
1523 and 1524 accuracies with selected probes (±°C)
-200 °C
   5616-12: 0.014
   5615-6: 0.025
   5627A-12: 0.027
   5610-9: n/a
0 °C
   5616-12: 0.021
   5615-6: 0.021
   5627A-12: 0.049
   5610-9: 0.009
100 °C
   5616-12: 0.027
   5615-6: 0.028
   5627A-12: 0.065
   5610-9: 0.009
300 °C
   5616-12: 0.040
   5615-6: 0.043
   5627A-12: 0.103
   5610-9: n/a
420 °C
   5616-12: 0.050
   5615-6: n/a
   5627A-12: 0.130
   5610-9: n/a
Note 2:
   Includes readout accuracy, probe calibration, and probe drift
PRT equivalent temperature accuracy (readout only)
–100 °C
   ± 0.011
0 °C
   ± 0.015
100 °C
   ± 0.019
200 °C
   ± 0.023
400 °C
   ± 0.031
600 °C
   ± 0.039
Thermistor equivalent temperature accuracy (readout only)
0 °C
   ± 0.002
25 °C
   ± 0.003
50 °C
   ± 0.006
75 °C
   ± 0.014
100 °C
   ± 0.030
Model Name Description
1523

Thermometer Readout, Handheld, 1 Channel, 17025 Accredited Calibration

1524

Thermometer Readout, Handheld, 2 Channel, Data Logger, 17025 Accredited Calibration

1523-P2

1523 Bundled with 5628 PRT, Universal TC INFO-CON Connector, TPAK, and Case

1523-P3

1523 Bundled with 5627A PRT, Universal TC INFO-CON Connector, TPAK, and Case

1523-P4

1523 Bundled with 5615 PRT, Universal TC INFO-CON Connector, TPAK, and Case

1524-P2

1524 Bundled with 5628 PRT, Universal TC INFO-CON Connector, TPAK, and Case

1524-P3

1524 Bundled with 5627A PRT, Universal TC INFO-CON Connector, TPAK, and Case

1524-P4

1524 Bundled with 5615 PRT, Universal TC INFO-CON Connector, TPAK, and Case

Accessories common to all models:

Accessory Description
1523-CASE

Case, 1523/1524 Readout and Probe Carrying

TPAK

ToolPak, Meter Hanging Kit

1929-2

System Verification, PRT with Readout, Accredited.
Choose two temperature points, extra points at additional cost. Available temperature points are –197 °C, -80 °C , –39 °C, 0.01°C, 30 °C, 157 °C, 232 °C, 300 °C, 420 °C, 500 °C, 660 °C.

1929-5

System Verification, Thermistor with Readout, Accredited.
Choose two temperature points; extra points at additional cost. Available temperature points are -30 °C, -20 °C, -10 °C, 0 °C, 10 °C, 20 °C, 30 °C, 40 °C, 50 °C, 60 °C, 70 °C, 80 °C, 90 °C, 100 °C.

1930

System Calibration, PRT with Readout, Accredited.
Choose PRT temperature range for the calibration. Available temperature ranges are –200 °C to 500 °C, –200 °C to 420 °C, –80 °C to 420 °C, –40 °C to 420 °C, –40 °C to 232 °C, 0 °C to 420 °C.

1935

System Calibration, Thermistor with Readout, NVLAP-accredited
Choose thermistor temperature range for the calibration. Available temperature ranges are 100 °C span (6 points over span), 60 °C span (7 points over span), 100 °C span (11 points over span).

5610-9-P

Probe, Precision Thermistor, Stainless Steel (1/8" x 9"), 0

5615-6-P

Probe, PRT, 100 ohm (3/16 x 6 inch),

5609-9BND-P

Probe, PRT, 25 ohm (1/4 x 12 inch), 90

FLUKE80PK

80PK-1, Probe, Thermocouple, Beaded Type K

2370

Cable, RS-232 (1523, 1524)

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

2523-156 Isolator

RS-232 Optical 

2523-256 Isolator

RS-232 Optical 

Priority Gold Instrument CarePlan

Fluke Calibration Priority Gold Instrument CarePlans are available for most calibration products. Please contact your local Fluke Calibration sales representative for details or to request a quote. You may also call the Customer Care Center at 877-355-3225 or send email to careplans@flukecal.com.

Silver CarePlan

Fluke Calibration Silver CarePlans are available for most calibration products. Please contact your local Fluke Calibration sales representative for details or to request a quote. You may also call the Customer Care Center at 877-355-3225 or send email to careplans@flukecal.com.

Fore more information, click here!

Product Manuals

1523, 1524 Technical Guide 

1523, 1524 Technical Guide (rus) 

1523, 1524 Technical Guide Supplement

1523, 1524 Users Guide 

1523, 1524 Users Guide (chi)

1523, 1524 Users Guide (fre)

1523, 1524 Users Guide (ger) 

1523, 1524 Users Guide (ita)

1523, 1524 Users Guide (jpn)

1523, 1524 Users Guide (rus)

1523, 1524 Users Guide (spa)

1523, 1524 Statement of Memory Volatility

Brochures

1523/1524 Reference Thermometers Brochure 

Petrochemical industry calibration solutions 

Решения по калибровке для нефтехимической промышленности (Russian)

Soluciones de calibración de la industria petroquímica (Spanish) 

Soluções de calibração do setor petroquímico (Portuguese) 

 Kalibrierlösungen für die petrochemische Industrie (German) 

Solutions d'étalonnage pour l'industrie pétrochimique (French) 

石油化学産業における校正ソリューション 

Pharmaceutical industry calibration solutions 

Решения по калибровке для фармацевтической промышленности (Russian) 

Soluciones de calibración para la industria farmacéutica (Spanish) 

Solutions d'étalonnage pour le secteur pharmaceutique (French) 

Kalibrierlösungen für die Pharmaindustrie (German) 

Soluções de calibração do setor farmacêutico (Portuguese)

医薬品産業における校正ソリューション

Power and utilities industry calibration solutions 

Soluciones de calibración de la industria de energía y servicios (Spanish)

Решения в области калибровки приборов для измерения при производстве электроэнергии и эксплуатации инженерно-технических систем 

Soluções de calibração do setor de serviços públicos e energia (Portuguese)

Kalibrierungslösungen für die Energie- und Versorgungsindustrie (German) 

Solutions d'étalonnage pour le secteur de la distribution d'énergie (French)

電力産業における校正ソリューション 

Temperature Calibration Applications and Solutions

Etalonnage de la température APPLICATIONS ET SOLUTIONS

Calibración de temperatura Aplicaciones y soluciones

Calibração de Temperatura Aplicações e soluções 

Temperaturkalibrierung Anwendungen und Lösungen

Application notes

Industrial temperature readout and probe selection guide 

Anleitung zur Auswahl von Temperaturanzeigegeräten und Messfühlern für den Industrieeinsatz (German) 

Guide de sélection des afficheurs et sondes de températures industrielles (French) 

Guía para la elección de sonda y lectura de temperatura industrial (Spanish) 

уководство по выбору промышленных показаний и зонда температуры (Russian) 

Guia de seleção de instrumento de leitura e sonda de temperatura industrial (Portuguese) 

工业测温仪和探头选型指南 (Chinese)

Probe-to-Readout Adapter Guide 

Temperature Calibration Equipment: A Technician's Guide

Temperature measurement and calibration: What every instrument technician should know 

Temperaturmessung und -kalibrierung (German) 

Mesure et étalonnage thermique (French) 

Medición y calibración de temperatura (Spanish) 

English: Thermocouple App Notes Series, 1 of 4 - Thermocouple Fundamentals 

Korean: 열전대 응용시리즈 첫번째 - 열전대의 기본사항 

German: Thermocouple App Notes Series, 1 of 4 - Grundlagen zu Thermoelementen 

French: Thermocouple App Notes Series, 1 of 4 - L'essentiel des thermocouples 

Spanish: Thermocouple App Notes Series, 1 of 4 - Nociones básicas de los termopares 

Russian: Thermocouple App Notes Series, 1 of 4 - Основные сведения о термопаре 

 English: Thermocouple App Notes Series, 2 of 4 - How to Select Thermocouple Calibration Equipment 

German: Thermocouple App Notes Series, 2 of 4 - Auswahl von Geräten zur Kalibrierung von Thermoelementen 

French: Thermocouple App Notes Series, 2 of 4 - Guide de sélection d'équipement d'étalonnage de thermocouple 

Russian: Thermocouple App Notes Series, 2 of 4 - Как выбрать оборудование для калибровки термопары 

Spanish: Thermocouple App Notes Series, 2 of 4 - Cómo elegir un equipo de calibración de termopares 

Data sheets

1523/1524 Reference Thermometers Data Sheet

1524探头参数设置示例(简体中文)

Referenzthermometer 1523/1524 

Termómetros de referencia 1523/1524 

Thermomètres de référence 1523/1524 

1523/1524 基準温度計 

1523/1524 기준 온도계 

Эталонные термометры 1523/1524

1523/1524 参考 测温仪 

Software

IO Toolkit v1.0

Video

1523 and 1524 Reference Thermometers Demo Video

Safety, Sevice and Product notices

Reference Thermometers Battery Life Notification