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| | | | Fluke 61 | Fluke 62 | Fluke 63 | Fluke 66 | Fluke 68 | | Temperature range | -18 - 275 °C | -30 - 500 °C | -32 - 535 °C | -32 - 600 °C | -32 - 760 °C | | Accuracy | 2% | 1.5% | 1% | 1% | 1% | | Response time | < 500 ms | < 500 ms | < 500 ms | < 500 ms | < 500 ms | | Optical resolution | 8:1 | 10:1 | 12:1 | 30:1 | 50:1 | | Recommended distance to spot | <= 2 m | <= 2 m | <= 2.5 m | <= 4.5 m | <= 7.5 m | | Laser sighting | single-point laser | single-point laser | single-point laser | single-point laser | single-point laser | | Adjustable emissivity | | | | • | • | | Min/Max readings | | -/• | -/• | •/• | •/• | | AVG readings | | | | • | • | | DIF readings | | | | • | • | | Backlit LCD | • | • | • | • | • | | Audible Hi/Lo alarm | | | | •/• | •/• | | Probe input (types) | | | | RTD | RTD | | Data logging (number of measurements) | | | | 12 points | 12 points |
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