1. scan switch parasitic potential≤0.4μV
2. resolution: max potential measuring: 0.1μV max resistance measuring: 0.1mΩ
3. accuracy : potential measuring: ≤0.01%
Resistance measuring: ≤0.01%
Thermocouple checking≤1.2℃
Thermoresistance checking≤0.05℃
4. Constant stability :
temperature change after thermocouple checking processing constant≤0.2℃/min tank temperature change after thermocouple checking processing constant≤0.4℃/min
5. cold automatic compensation: when cold temperature （20±10）℃, compensation error≤0.2℃
6. checking temperature: thermocouple : 300～1100℃
thermoresistance : 300～1100℃
7. checking count: thermocouple can checking 1～5 same time
thermoresistance can checking 1～5 same time
8. continuous checking point one time: thermocouple: four points thermoresistance:: three points
9. checking time: thermocouple checking, about 30 min per 100℃
10. do data processing according tor national metrology and verification
11. working environment , environment temperature: 20℃±3℃ relative humidity: ≤75%
12. supply power AC 220V±10% 50±1HZ
Grounding resistance: ≤4Ω
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