| General |
| Backlit display for use in poorly lit areas |
Fluke 61: Yes
Fluke 65: Yes
Fluke 63: Yes
Fluke 66: Yes
Fluke 68: Yes |
| Holds temperature readings |
Fluke 61: Yes
Fluke 65: Yes
Fluke 63: Yes
Fluke 66: Yes
Fluke 68: Yes |
| Range |
Fluke 61: -18 to 275 °C (-0 to 525 °F)
Fluke 65: -40 to 500 °C (-40 to 932 °F)
Fluke 63: -32 to 545 °C (-25 to 999 °F)
Fluke 66: -32 to 600 °C (-25 to 1100 °F)
Fluke 68: -32 to 760 °C (-25 to 1400 °F) |
| MIN/MAX/AVG |
Fluke 61: N/A
Fluke 65: MIN/MAX
Fluke 63: MAX
Fluke 66: All
Fluke 68: All |
| Datalogging |
Fluke 61: N/A
Fluke 65: N/A
Fluke 63: N/A
Fluke 66: Yes
Fluke 68: Yes |
| Distance to spot ratio |
Fluke 61: 8:1
Fluke 65: 8:1
Fluke 63: 12:1
Fluke 66: 30:1
Fluke 68: 50:1 |
| Hi-Lo Alarm |
Fluke 61: N/A
Fluke 65: N/A
Fluke 68: N/A
Fluke 66: Yes
Fluke 63: Yes |
| Optional RTD probe (contact temperature measurement) |
Fluke 61: N/A
Fluke 65: N/A
Fluke 63: N/A
Fluke 66: Yes
Fluke 68: Yes |
| Emissivity |
Fluke 61: Fixed at 0.95
Fluke 65: Fixed at 0.95
Fluke 63: Fixed at 0.95
Fluke 66: Digitally adjustable (from 0.1 to 1.0 by 0.01)
Fluke 68: Digitally adjustable (from 0.1 to 1.0 by 0.01) |
