Working condition
The temperature to ensure accuracy:20±2℃
Ambient temperature: 12~28℃
RH: 30~80﹪
Atmosphere pressure: 94~109Kpa
Power supply: 220V AC±1﹪ 50HZ±1﹪
Dimension and weight:
Computer Measurement System:L×D×H 140×70×120cm,weight:70Kg
0℃ and 100℃ temperature source:L×D×H 70×50×80 cm,weight:30 Kg
Device composition:
Computer::It is domestic brands of Pentium machine or other brand of the same class.
High precision digital multimeter:Six semi-digital multimeter
a. resolution:0.1mV
b. accuracy:±0.005﹪reading±0.0035﹪range
control platform:
it is compose of working platform and control box。
Control box includes constant current source components, switch parts, DC power supply, and standard resistance, such as second-class standard platinum resistance
printer:24 needle printer
0℃ temperature resource:It is composed of mixer and freezing.
100℃temperature resource:It is composed of boiling point of water tanks, heating elements and Thermometer etc.
100℃ temperature error:Deviate 100℃<=±2℃
100℃ temperature stability:temperature change ≤0.04℃ every 10 minutes
100℃ Temperature field uniformity:Max. level differential temperature ≤0.01℃
Accuracy grade:0.005 grades
Pieces of tested thermal resistor:1~4 pieces