Contact Thermometer (Fluke 52 II) vs Non-contact (Fluke 62 MAX) — Which Is Right?
The Fluke 52 II is a contact thermometer requiring a thermocouple probe, offering ±1°C accuracy suitable for traceable temperature measurements. The Fluke 62 MAX is a fast non-contact IR thermometer whose accuracy depends on emissivity and distance — making it unsuitable for formal calibration work. Both cover overlapping ranges (-20 to +650°C) but serve clearly different use cases.
| Details | Fluke Fluke 52 II Dual-Input Digital Thermometer 52 II | Fluke Fluke 62 MAX Infrared Thermometer 62 MAX |
|---|---|---|
| Starting Price | ฿9,500+ | ฿6,500+ |
| Range | -200–1000 °C | -20–650 °C |
| Accuracy | ±1°C ±1 digit | ±1.5°C or ±1.5% |
| Functions | T1, T2, T1-T2, MAX, MIN, AVG, REL | - |
| Resolution | 0.1°C | - |
| Number of Inputs | 2 (T1, T2) | - |
| Temperature Range | -200 to +1000 °C | -20 to +650 °C |
| Accuracy (at ambient) | ±1°C (±1 digit) | - |
| Supported Thermocouple Types | K, J, T, E | - |
| Accuracy | - | ±1.5°C or ±1.5% (whichever is greater) |
| D:S Ratio | - | 10:1 |
| Emissivity | - | 0.95 (fixed) |
| Response Time | - | < 1 second |
| Protection Rating | - | IP54 |
Our Verdict
Choose the Fluke 52 II when you need accurate, traceable temperature measurement — furnace verification or comparison calibration. Choose the Fluke 62 MAX for fast preliminary checks such as scanning hot motors or detecting hotspots on electrical panels.
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