Heidolph MR Hei-End, Руководство по эксплуатации

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Operation
13
Speed can be set between 30 - 1,400 rpm.
➜ Place vessel with sample and stirring
bar on hotplate.
➜ Turn item on with ON/OFF switch.
➜ Set speed with analog knob.
✓ Actual speed appears in the 3-digit
digital display.
✓ Rotation starts immediately.
Temperature display: actual 36 °C
Speed display: actual 400 rpm
Set temperature
Warning:
Risk of burning!
The hotplate can reach temperatures up to 300 °C.
If you work with temperatures above 50 °C wear safety gloves and
appropriate protective clothing.
Warning:
Risk of ignition!
Infl ammable samples may ignite with high temperatures.
If you work with infl ammable samples set temperature at least 25
°C lower than ignition point of sample.
There are two options to control heating:
▪ Without temperature sensor: temperature will be measured and controlled via
hotplate.
▪ With temperature sensor: temperature will be measured and controlled via sensor
directly in medium (see chapter “Assembly, Connect temperature sensor Pt 1000”.
You can set following temperature range:
▪ Hotplate / temperature sensor: between 20 °C and 300 °C (lower degrees depending
on ambient temperature).
▪ Safety delta: between 10 °C and 25 °C
If temperature raises above set temperature and exceeds safety delta, heating is
automatically cut off.
Working without temperature sensor:
Due to differences in heat conductivity of various materials of
vessels and medium the temperature of hotplate should be set 1½
to 4 times higher, than the desired medium temperature.