RSLAB 4C Manual De Instrucciones página 18

Character Description
Display temperature when the heating function is swit-
Temp and C°
ched on
Display stirring state when the stirring function is swit-
Mot
ched on
Display hot warning if the hotplate temperature is above
Hot
50 ºC after switching off the heating function
Probe Display when using external probe
Remote Display in case of remote control
Err Display in case of error happening
Rated value Display value in case of heating or stirring function swit-
Real value ching on
If both heating and stirring functions have been started at the same time, heating function
always has higher priority. If in this case speed is changed via the stirring knob, it displays
stirring speed and reverses to temperature in the duration of 5 seconds.
6- INITIALIZATION
Turn on instrument by the power switch.
The "heat" and "stir" LEDs and the LCD display flash about 3 times.
LCD displays the workplate safe temperature limit in "SAFE xxx ºC".
LCD displays residual heat warning "rES On/OFF"
LCD displays stirring bar breakaway monitoring "br On/OFF"
LCD displays the "Probe" characters in case of connecting with external temperature
sensors.
RSLAB-4C are supplied with the following default settings:
- Setting temperature: 25 ºC
- Setting rotary speed: 100 rpm
Instruction manual 50694130
ENGLISH
Pag. 18 Version 1 August 2015
7- FUNCTION: HEATING
The device is controlled by digital temperature control technology, which has two sepa-
rate safe circuits. The hotplate is kept at a constant temperature by a digital control circuit.
The hotplate temperature can also be monitored from a separate, adjustable safe circuit.
The two temperature sensors (Pt1000) internal for temperature control are built into the
hotplate. The single external Pt1000 can monitor the temperature of sample.
If external temperature sensors needed, it must be plugged in before the device is swit-
ched on.
Ensure the external temperature sensor connect firmly before heating.
Set the temperature via turning the temperature control knob slowly to the ideal value.
When the heating function is switched in, the LED "heat" will light up and the LCD will
display the real temperature.
The rated temperature will be displayed on the right-hand side of the LCD as well as
Temp and ºC characters.
The heating function is switched on or off by pushing heating knob.
a. Working with external temperature sensor
The external temperature sensor PT1000 is a standard accessory. If the external tempe-
rature sensor is not plugged in, "Probe" will flash. If plugged in, "Probe" will be shown
on the digital display to indicate that the sensor is operating. The external temperature
sensors' value and actual temperature are displayed. Compared with the temperature
control of the hotplate, the external temperature sensor can control the media temperatu-
re precisely.
Do no insert or remove sensor while heating.
b. Residual heat warning (HOT)
In order to prevent the risk of burns from a hotplate, RSLAB-4C has a residual heat war-
ning function. When the heating function is switched off and the hotplate temperature is
still above 50 ºC, "hot" will flash to warn that there is a hazard of burns from the hotpla-
te.
When the heating plate temperature drops to below 50 ºC, the unit will automatically
switch off. When the plug is pulled out, the residual heat warning function cannot be run.
c. Setting the safety temperature
The safety temperature can be set adjusting the temperature setting key to set the safety
temperature.
Instruction manual 50694130
ENGLISH
Pag. 19 Version 1 August 2015