RKI Instruments EC-600, Руководство по эксплуатации

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69
12-2. Definition of terms
ppm Gas concentration indicated in the unit of one-millionth of the volume
Calibration Find relationship of the readings, display values or setpoints with the actual values
by using the calibration gas, etc.
Maintenance
mode When maintenance is performed on the monitor, the alarm contact is disconnected,
and a signal to indicate the maintenance mode status is sent out to the external
output signal. As a result, maintenance can be performed on a single unit of the
monitor.
Initial clear
The reading is unstable for seconds after the power is turned on. To prevent
malfunctions for that period, the alarm contact is deactivated. In addition, a signal to
indicate the initial clear status is sent out to the external output.
Zero
suppression A function to cut off the influences of environmental changes, interference gases,
etc.
Alarm delay time A function which temporarily suspends activation to prevent a false alarm caused by
noise from its outside.