Electron Charge-to-Mass Ratio
Appendix A: General Specifications
13
012-14265A
Appendix A: General Specifications
Item
Description
Supply voltage:
110 – 120 V or 220 – 240 V
Supply voltage fluctuations:
±10%
Fuse protection for inputs:
250 V T 315 mA / 2A
Display:
3-1/2 digit display
Using site:
Indoor use
Temperature:
Operating: 0°C to 40°C, Storage: -20°C to 50°C
Operating Altitude:
0 to 2000 meters
Relative humidity:
Noncondensing < 10°C, 90% from 10°C to 30°C, 75% from 30°C to 40°C
Pollution degree:
2
Certifications
CE
Safety compliance:
IEC/EN 61010-1
Overvoltage category:
II
Degree of protections:
IP20
Normal energy protection:
5 J
Item
Description
Tunable DC (Constant Current)
Power Supply, 3.5 A / 6.3 V
0~3.5 A DC, V
24 V (ripple < 1%) for Helmholtz coils; 3.5
Digit Display;
6.3 V AC, I
1 A, 50 / 60 Hz, for Filament, 3.5 Digit Display
Tunable DC (Constant Voltage)
Power Supply II
0~12 V DC, I
1A (ripple < 1%), 3.5 Digit Display;
0~100 V DC / 0~200 V DC (ripple < 1%) (Two ranges),
I
30mA, 3.5 Digit Display
e/m Tube
Filling gas: helium
Pressure: 10-1 Pa
Filament Voltage:
250 V DC
Deflecting Voltage:
150 V DC
Helmholtz Coils
Effective Radius: 158 mm
Number of Turns: 130
Input Current:
3.5 A DC
