TENMARS TM-321N デュアルK型温度メーター (-200 ° C-1372 ° C (-328 ° F ~ 2501 ° F))

General specifications 
LCD display digits : 4 digits LCD display, the largest display 9999
Power: 9V NEDA 1604, IEC 6F22, JIS006Px1pc
Battery life: Approximately 100 hours (alkaline battery)
Operating temperature & humidity: 0°C~50°C (32°F~122°F), <80%RH
Storage temperature & humidity: -10°C-60°C (-4°F~140°F), <70%RH
Weight: Approximately 180g (including battery)
Specifications 
Measurement range: -200°C-1372°C (-328°F~2501°F)
Resolution: 0.1; ≤ 999.9
0.1 ; ≥1000 
Sampling rate: 1 time second
Accuracy (23°C+5°C) (73.4°F+9°F): ±0.1% reading+0.5°C (1°F) Below -100°C (-148°F): ±(0.2% rdg+1°C (2°F)
Temperature coefficient
-100°C-1372°C (-148°F~2501°F): 0.01% reading+0.05°C/°C (0.1°F/°F)outside the specified 18°C -28°C (64°F~82°F) Below-100°C (-148°F): 0.02%rdg+0.1°C/°C(0.2°F/°F)
Temperature Scale: ITS-90 
Accuracy is specified for ambient temperatures between 18-28°C (64-82°F) The above specifications do not include error of thermocouple

Datasheet