9
①
Press the REL key in the measuring mode.
The REL light turns on to indicate that the measured value is set to "0.00".
②
To cancel, press the REL key again.
The REL light goes out to indicate that the unit has returned to the measuring mode.
Note: The REL function is also cancelled under the following conditions:
- When the unit is turned off
- When the unit enters the setting mode
Note: The function cannot be used in combination with the MAX/MIN function.
○ Alarm function
If the measured value exceeds or falls below the alarm value, the ALARM light flashes and notifies
the user via the contact output. Upper and lower limit alarm values can be separately set.
For setting the alarm, refer to "Setting mode" on page 10.
Alarm operation conditions: Upper limit alarm: Measured value
≦
Alarm value
Lower limit alarm: Measured value
≧
Alarm value
The alarm operation on the unit has a hysteresis of 1 hPa for protection of alarm devices.
The alarm operation is cleared under the following conditions:
Alarm clearing conditions: Upper limit alarm: Measured value
≦
alarm value – 1 hPa
Lower limit alarm: Measured value
≧
alarm value + 1 hPa
* Operation example (upper limit alarm is set to 1050 hPa):
The alarm operation is activated when the measured value is 1050.00 hPa or higher.
The alarm is cleared when the measured value is equal to 1049.00 hPa or less.
Note: The alarm operation is retained while the maximum, minimum or relative value is being
displayed.
The alarm is triggered based on the measured value even while the maximum, minimum or
relative value is being displayed.
Note: The alarm operation is cancelled while in the setting mode. The alarm operation resumes
when the unit is returned to the measuring mode.
Measured value
Alarm operation is activated
Alarm is cleared
1049.00
1050.00
1051.00
