CAUTION
In the decay time measurement, it is necessary to apply DC high voltage to the
plate. The voltage should be 1,000 V or higher. If the insulation resistanceofthe
sensor plate is low by dirt or short circuit of conductive lint such as hair etc., it is
not reached to the enough voltage then the red LED, HV OUT lights continuously.
In this case, the measurement cannot be started.
ERROR 1 is displayed on the LCD when it passes one second or longer with the red
LED illuminating. Press POWER button again to suspend measuring.
Check the sensor plate after power off. Clean the plate and supporting insulators
using IPA with soft cloth etc. Remove any lint between the sensor plate and the
back plate. Let it dry completely before power is turned on.
The timer starts when the plate voltage reaches 1,000 volts and it stops whenthe
plate voltage reaches the setting voltage. If there are insufficient ions because of the
ionizer failure etc., the timer cannot stop by the fact the plate voltage does not reach
the setting voltage. In this case, press POWER button again to suspend
measurement and investigate the ionizer.
If the decay time exceeds the setting time of measurement, the display shows"out"
as shown in the figure below.
() ()ab
a Overtime in positive decay time measurement()
b Overtime in negative decay time measurement()
LCD display when overtime
The buzzer beeps once at the end of all measurements. LCD display shows "End".③
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