Witeg WB-11, Руководство по эксплуатации, Страница: 21 / 24

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witeg Labortechnik GmbH, WB Precise Water Bath
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The delay time is adjustable from one minute till over 99 hours (00:01 - 99:59) in one
minute steps.

Turn the Jog-Shuttle to choose your desired value and probate it by pushing the
Jog-Shuttle. The delay time starts to run by probating the value.

If you want to change the confirmed value, you have to push the Jog-Shuttle once again.

Turn the Shuttle knob clockwise to increase the time and counter-clockwise to reduce it.

The turn-off delay time will not elapse before the turn-on delay time is executed.
6.4 Set temperature

To reach this menu item you have to push the MODE button in the
menu “set turn-off
delay”

The temperature is adjustable from 0 °C till 100 °C in 0,1 °C-steps.

Turn the Jog-Shuttle to choose your desired value and probate it by pushing the
Jog-Shuttle. The heating process starts shortly after probating the value when there is no
turn-on delay time running.

If you want to change the confirmed value, you have to push the Jog-Shuttle once more.
The PV starts blinking and is adjustable again.

To stop the heating process you have to push the MODE button when the value in PV line
is blinking.

The heating lamp shines, if the heater is activated.
6.5 Temperature Offset (Calibration)
If the temperature measured by you differs from the temperature the device is showing (PV) you
have the possibility to compensate the divergence by the Offset. So you can balance
differences of about ±10 °C.
The Offset is calculated as follows:
Temperature meassured by you
– showed Temperature (PV) = Offset

To reach this menu you have to use the key combination
in the menu item “set
temperature”.

Set the calculated value by turning the Jog-Shuttle. The Offset will be added to the PV
immediately.

Confirm the Offset by pushing the MODE button, you will also reach the previous menu.
6.6 Key lock

To avoid accidental changing of the set values, push the MODE button in the menu item
”set temperature”.

In this menu item can you see the actually temperature in the SV-line and the remaining
time of turn-off delay time in the PV-line. The function of the Jog-Shuttle knob is
deactivated.

Press the MODE button once more to leave the key lock. Than you are in the menu item
“set turn-off delay”.
6.7 Storage function
The WB Precise Water Bath includes a storage function for temperature and timer values. That
is practical if you want to work with the same parameters
often. Then you didn’t need to set
them in every usage.

For storing values you only need to hold the Jog-Shuttle knob pushed for two seconds.
Successful storing is displayed by blinking of the SV for three times.