Grant Instruments QBH - Manual (Page 7)

QBD, QBA, QBH, 28089 Ver 12
Operating Manual Page 6
www.grantinstruments.com
EN
The digital range of products also contain the following user features:
Timer
Alarm
Offset
Probe selection
Delay Start and Stop
Calibration
Programming (QBH only)
Timer
The timer is used to count down a time period in the range of 1 to 999 minutes. A
buzzer signifies time up, but the heater control is not affected.
1
Press F to enter main menu.
2 Rotate control knob until display shows .
3 Press S to select timer control.
4 Display will show  or . Rotate knob to desired state and press S to select
state.
5 If  is selected the display will flash and show number of minutes. Rotate the
control knob until the desired value is displayed and press S to select. If  is
selected the display will return to the actual temperature.
6 If the timer is set the display will alternate between actual temperature and
time left on the timer.
7 Once the timer has counted down to zero the buzzer will sound and the display
will alternate between  and actual temperature
1 .
8 To cancel the buzzer press either F or S key. The buzzer will cancel automati-
cally after 5 minutes.
9 If the main power to the unit fails the timer will revert to  2 .
Notes:
1
The heater control is not affected by the timer, normal operation continues.
2 The timer value will be retained in memory after the main power has been
turned off.
4. User features - QBD, QBH