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The OS643 series has been discontinued. Please see the OS-PEN9 model as a possible alternative or contact our Temperature Engineering department.| OS643/OS643-LS °C/°F Switchable Detection Element: Thermopile Sighting: Laser Marker 1 mW Backlit LCD Display Analog Output: 1 mV/°C/°F Emissivity: 0.95, Accuracy ± 3% Temperature Range: 0 to 260°C (32 to 500°F ) | |
| OS643E/OS643E-LS Infrared Thermometer °C/°F Switchable Detection Element: Thermopile Sighting: Laser marker 1 mW Backlit LCD Display Emissivity: Adjustable 0.01 to 1.00 Temperature Range: -20 to 400°C, -4 to 752°F | OS643W Switchable from IR to T/C Temperature Range: IR: 32 to 500°F T/C: -58 to 2000°F Accuracy: IR: ± 3% rdg T/C: ± 0.3% rdg + 2°F Analog Output: 1 mV/°C/°F Emissivity: 0.95 Detection Element: Thermopile |
| OS643 | OS643-LS | OS643E | OS643E-LS | OS643W | |
| Backlit LCD | Yes | Yes | Yes | Yes | Yes |
| Resolution (counts) | 1999 | 1999 | 1999 | 1999 | 1999 |
| Laser guide (1mW) | No | Yes | No | Yes | No |
| Emissivity (E) | 0.95 | 0.95 | Adjustable 0.01 to 1.00 | Adjustable 0.01 to 1.00 | 0.95 |
| Range C° | 0 to 260 | 0 to 260 | -20 to 400 | -20 to 400 | IR: 0 to 260 TC: -50 to 1300 |
| Range F° | 32 to 500 | 32 to 500 | -4 to 752 | -4 to 752 | IR: 32 to 500 TC: -58 to 2000 |
| Auto hold | Yes | Yes | Yes | Yes | Yes |
| Auto-power off | Yes | Yes | Yes | Yes | Yes |
