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Keithley 740 System
Scanning Thermometer
- mV Input Resistance: >1 GW
- Input Current: 800 pA max
- Max Input: 250V rms, 350V peak
- Max Common Mode Voltage: 200V peak to earth
- Thermocouple Loop Resistance: 1 kW
max
- Filter Settling Time: 100 ms
- Scanning Rate:
- Filter Disabled: >20 channels/second
- Filter Enabled: >5 channels/second
- Bench Reading Rate:
- Filter Disabled: 8 readings/second
- Filter Enabled: 4 readings/second
- Logging Interval: One of 12 selectable rates from 50ms
to 1 hour
- Scanning Interval: One of 10 selectable rates from 500ms
to 1 hour
| Type |
Temperature
Range °C |
Temperature
Range °F |
Accuracy |
| mV |
-99.999
to 100.000 mV |
±(0.02% + 3 mV) |
| J |
-100 to 760 |
-148 to 1400 |
±0.4°C or
±0.8°F |
| K |
-100 to 1372 |
-148 to 2501 |
±0.5 °C or
±0.9°F |
| T |
-100 to 400 |
-148 to 752 |
±0.5°C or
±0.8°F |
| E |
-100 to 1000 |
-148 to 1832 |
±0.5 °C or
±0.9°F |
| R |
0 to 1780 |
32 to 3236 |
±1 °C or ±2°F |
| S |
0 to 1780 |
32 to 3236 |
±1°C or ±2°F |
| B |
350 to 1820 |
662 to 3308 |
±1 °C or ±2°F |
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