7
Note 1: The measurement output current may reach as high as approximately 1.4 times the
maximum value. When a current in excess of the measurement output current’s
maximum value is output, the set measurement voltage may drop.
Note 2: The measurement accuracy is defined as
±
10% of the indicated measured value
displayed on the screen.
2) Measuring Time (Sampling Cycle)
Approx. 200 ms
2.2 Function Specifications
1) CHARGE Function
This function charges the sample to be measured by applying the Selected measuring
voltage when the CHARGE switch is pushed.
Internal Resistance
SM-8213: Approx. 0
Ω
SM-8215: Approx. 30k
Ω
SM-8220: Approx. 30k
Ω
2) DISCHARGE Function
This function discharges a residual voltage on the sample after measurement when the
DISCHARGE switch is pushed.
Internal Resistance
All models: Approx. 100k
Ω
3) HV-EN (High Voltage Enable) – Interlocking Function
This function externally controls to make the output of measuring voltage on or off.
This function is used in combination with an interlock switch on the measuring jig so as to
prevent an electrical shock during measurement.
4) TIMER Function
This function determines the voltage charging time and the measuring time, respectively,
within a range from 1 to 999 seconds. After the set time is up, the measured value is shown
held.
5) COMPARISON and JUDGMENT Function
This function makes a comparison of the measured value with the preset judgment value,
and if the measured value is less than the judgment level, it makes the alert buzzer sound,
closing the incorporated relay contacts.
6) RS-232C Interface Function
This function allows a control of an optional printer via RS-232C interface.
The optional printer prints measured data.
7) REMOTE MEASUREMENT Function
This function allows a remotely controlled measurement by means of a remote switch.
