NEW BRUNSWICK SCIENTIFIC innova 4340, Руководство по эксплуатации, Страница: 29 / 87

17
New Brunswick Scientific User’s Guide
2. Set the time by pressing
Δ
or
∇
key until the desired setpoint is
displayed (0.1 - 99.9 hours).
3. While the SET LED is lit, press the START/STOP key. The TIME
indicator will go out and the display will read “OFF”.
4.5 Alarm Functions
Innova shakers have an audible alarm which is activated at predetermined times.
It may be deactivated in the following way:
1.
Press SELECT to light HRS.
2. Simultaneously press the
Δ
and
∇
keys. The SET and MAINT indicators will
flash.
3. While the SET and MAINT indicators are flashing, press the START/STOP
key. The MUTE indicator will light to advise that the audible alarm is
deactivated.
To reactivate the alarm, repeat steps 1-3. The MUTE indicator will be
extinguished when the alarm has been reactivated.
4.6 Temperature
This control consists of an internal electrical interface, an RTD temperature probe,
and an analog output for chart recorder or computer.
4.6.1 Setting the Temperature
To set the temperature setpoint:
1.
Press the SELECT key until the function indicator lights on the
°
C mode. The
temperature can be set from the 4.0
°
C to 60.0
°
C. 4.0
°
C is the minimum when
the ambient temperature is 15
°
C.
2. Increase or decrease the setpoint by pressing the
Δ
or
∇
key.
The temperature alarms, both audible and flashing light, are activated if the
temperature is more than 1.0
°
C higher or lower than the temperature setpoint. The
alarm will automatically deactivate as the unit achieves the set temperature.
4.6.2 Deactivating Temperature Control
If desired, the temperature control system may be shut off during set-up or for
special investigations.
To deactivate the temperature control system: