Make accurate, consistent measurementsÉ anywhere.
You need accuracy for compliance, product yields, energy savings, and consistent results. The 1523 uses current reversal, a technique used in high-end instruments that eliminates thermal EMFs, for precision temperature measurements. Specifications are guaranteed from -10 ¡C to 60 ¡C ambient. Special precision resistors and a highly stable reference voltage source keep the 1523 accuracy virtually insensitive to environmental temperature.
Like all Fluke handheld tools, the 1523 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 thermometerÕs 128x64-backlit LCD display. You can change the graphÕs resolution at the touch of a button. Now itÕs 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.
Applications
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.
Calibration, loop checking, plant startup, troubleshooting, maintenance, and repair are some of the varied duties that need a 1523 thermometer. Use it for a handy temperature reference in baths, dry-block calibrators, thermowells, clean rooms, engines, heat exchangers, furnaces, freezers, or anything else that must be calibrated, checked, or maintained.
Key features
Measure, graph and record three sensor types with one tool
The 1523 Reference Thermometer measures, graphs, and records PRTs, thermocouples, and thermistors. This thermometer readout delivers exceptional accuracy, wide measurement range, logging, and trending, all in a handheld tool you can take anywhere.
The 1523 lets you handle field applications, laboratory measurements, and data logging with ease.
Three sensor types
- PRTs: Ð200 ¡C to 1000 ¡C
- Thermocouples Ð200 ¡C to 2315 ¡C
- Precision thermistors: Ð50 ¡C to 150 ¡C
Accuracy
- PRTs: up to ±0.011 ¡C
- Thermocouples: ±0.24 ¡C for J,K,L,M
- Precision thermistors: ±0.002 ¡C
Fast mode
- PRTs: 0.45 seconds per sample
- Thermocouples: 0.3 second per sample
- Precision thermistors: 0.3 seconds per sample
Graphical display
- 128x64 backlit LCD graphic display
- Plot and scale trends in real time
- Simultaneous dual channel readings
| Specifications | |
| Input channels | 1 |
| Logging | 25 readings with statistics |
| Sample interval (normal) | 1 second |
| 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¡C to 60¡C (Best accuracy 13¡C to 33¡C) |
| Power requirements | 3 AA alkaline batteries |
| Size | 96 x 200 x 47 mm (3.75 x 7.9 x 1.86 in) |
| Weight | 0.65 kg (1.4 lb) |
| Environmental conditions for best accuracy | 13¡C to 33¡C |
| Millivolt range and accuracy | Ð10 mV to 75 mV ±(0.005% + 5 _V) |
| Resistance range and accuracy | 0 ½ to 400 ½ ±(0.004% + 0.002 ½) 200 ½ to 50 k½ ±(0.01% + 0.5 ½) 50 k½ to 500 k½ ±(0.03%) |
| Temperature coefficient, voltage (Ð10¡C to 13¡C , +33¡C to 60¡C) | ±(0.001%/¡C + 1 _V/¡C) |
| Temperature coefficient, resistance (Ð10¡C to 13¡C , +33¡C to 60¡C) | 0.0008%/¡C + 0.0004 ½ (0 ½ to 400 ½) 0.002%/¡C + 0.1 ½ (0 ½ to 50 k½) 0.06%/¡C + 0.1 ½ (50 k½ to 500 k½) |
| Excitation current, resistance | 1 mA (0 ½ to 400 ½) 10 _A (0 ½ to 50 k½) 2 µA (50 k½ to 500 k½) |
| Thermocouple Equivalent Temperature Accuracies (readout only) | |
| Type B | ±0.85¡C from 600¡C to 800¡C ±0.68¡C from 800¡C to 1000¡C ±0.57¡C from 1000¡C to 1800¡C |
| Type C | ±0.32¡C from 100¼C to 550¡C ±0.71¡C from 550¡C to 2300¡C |
| Type E | ±0.52¡C from -200¡C to 0¡C ±0.22¡C from 0¡C to 950¡C |
| Type J | ±0.52¡C from -200¡C to 0¡C ±0.23¡C from 0¡C to 1200¡C |
| Type K | ±0.61¡C from -200¡C to 0¡C ±0.24¡C from 0¡C to 1370¡C |
| Type L | ±0.36¡C from -200¡C to 0¡C ±0.23¡C from 0¡C to 1370¡C |
| Type M | ±0.26¡C from -20¡C to 0¡C ±0.25¡C from 0¡C to 400¡C ±0.22¡C from 400¡C to 1400¡C |
| Type N | ±0.72¡C from -200¡C to 0¡C ±0.28¡C from 0¡C to 1300¡C |
| Type R | ±1.09¡C from -20¡C to 0¡C ±0.97¡C from 0¡C to 500¡C ±0.49¡C from 500¡C to 1750¡C |
| Type S | ±1.05¡C from -20¡C to 0¡C ±0.95¡C from 0¡C to 500¡C ±0.56¡C from 500¡C to 1750¡C |
| Type T | ±0.60¡C from -200¡C to 0¡C ±0.25¡C from 0¡C to 400¡C |
| Type U | ±0.54¡C from -200¡C to 0¡C ±0.24¡C from 0¡C to 400¡C |
| Accuracies are based on internal Reference Junction Compensation. Refer to Technical manual for equivalent accuracies with an external reference junction. | |
| 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 |
| Includes readout accuracy, probe calibration, and probe drift | |
| PRT Equivalent Temperature Accuracy (readout only) | |
| Ð100¡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 |
