Set Speed; Set Temperature; Justification; Set Delay Time - Wisd MSH-20D Bedienungsanleitung

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6.2 Set speed

 First menu item after switching the device on is the menu "set speed". The stirring lamp is
blinking. You can recognize the menu at "RPM" behind SV and PV.
 Speed is from 80 rpm till 1500 rpm adjustable in 5 rpm-steps.
 If there is showed "O RPM" in the SV-line, there is no value stored and you can start the
stirring process by turning the Jog-Shuttle knob clockwise.
 If "STIRRING" is blinking on the LCD there is a speed value stored. The saved value is
showed in the SV you can start the stirring process by pushing the Jog-Shuttle knob.
 In both cases is the speed during the stirring process variable. To change the SV you only
have to turn the Jog-Shuttle knob clockwise to increase the speed and counter-clockwise
to reduce it.
 To stop the stirring process manually, you have to push the Jog-Shuttle knob again or
decrease the speed till "0" by turning the Jog-Shuttle knob counter-clockwise.
 The set speed is increasing gradually, so it could takes some time till the SV is climaxed.

6.3 Set temperature

 When you push the MODE button in the menu item "set speed" you reach the menu item
"set temperature". You can recognize this menu at "°C" behind the SV and PV.
 The temperature is adjustable from 25 °C till 380 °C in 0,5 °C-steps.
 Push the MODE button once again if you want to work without the heating function. Then
you reach the next menu (see point 7.5) without collimated temperature value.
 Choose your desired temperature by turning the Jog-Shuttle and confirm the set value by
pushing the Jog-Shuttle.
 For changing the confirmed value again, you first have to push the Jog-Shuttle knob
again. "HEATING" starts to blink at the LCD and the temperature is adjustable again.
 When the heating lamp is shining, the heater is activated.

6.4 Justification

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 ±20 °C.
The Offset is calculated as follows:
Temperature meassured by you – showed Temperature (PV) = Offset
 To reach this menu you have use the keyboard shortcut in the menu item "set
temperature".
 Set the calculated value by turning the Jog-Shuttle. The Offset will be added to the PV
immediately.
 Save the offset by holding the Jog-Shuttle pushed until the values in PV and SV line starts
blinking.
 Push the MODE button to leave the justify menu.

6.5 Set delay time

 The delay timer serves as automatically stop function. It turns off the stirring and heating
process after elapsing of the timeframe you set.
 To reach the timer menu you have to push the MODE button in the menu item "set
temperature". You can recognize this menu by the blinking timer lamp.
 By renewed using of the MODE button you reach the key lock without setting delay time.
 The delay time is adjustable from one minute till over 99 hours (00:01 - 99:59) in one
minute steps.
witeg Labortechnik GmbH, WiseStir
19
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MSH-D Hotplate Magnetic Stirrer