Installation; Controls; Operation; Calibration - Peqlab HX-1 Bedienungsanleitung

Instruction Manual HX-1 & HX-2

4. INSTALLATION

Upon unpacking Digital Block Heater, inspect for damages. If any shipping damages are noticed imme-
diately contact your carrier. Inspect that the following are present: Instruction manual, Power cord, Block
lifter.
Place the unit on a level surface. For optimal function of the unit sufficient ventilation is required. There-
fore allow sufficient room around the unit, at least 5 cm to the wall and surrounding units. Plug the unit
into a properly grounded outlet. At the back of the unit you can find the coupler socket and the power
switch.
The unit is now ready for use.
Using the lifter, insert the block(s) into the system.

5. CONTROLS

ON/OFF power switch
LCD-Display
Arrow keys
Start/Stop key
Start LED
Heating LED
Set Temp LED

6. OPERATION

Power the unit up with the ON/OFF switch at the back of the unit. The unit powers up in set mode. Use
the UP and DOWN arrow keys to set the temperature to the desired operating temperature. Press the
Start key and the unit will begin heating to the set point.
The unit remembers the last set temperature at power down. However, the next time the Start key must
be pressed to cause the unit to start heating to that set temperature.
When first heating up a block, the unit will apply full heat to the block to rapidly increase the tempera-
ture. On this initial heat-up the display will show a temperature overshoot and then settle back to the set
temperature. The actual block temperature (and sample) however do not overshoot but rise to the set
temperature due to the natural heat lag time of the block. This control method allows for the quickest
heat up time without temperature overshoot of the block and the sample.
To change temperature set point, press Stop and then change the set point with the arrow keys. Press the
Start key to start heating control again.

7. CALIBRATION

Calibration allows the unit temperature display to be adjusted or matched to the temperature of a single
sample or to a calibrated thermometer making an independent temperature measure of the block.
The Digital Block Heaters are calibrated at the factory at 37 °C using a standard small hole-pattern
block. If you are using a block with a high heat loss rate such as a block with large holes or a platform
style block, you may choose to recalibrate the unit to your specific application. Also, if you are using
very loose or odd shaped vessels, the calibration function can help you match the display temperature to
your actual sample temperature.
To calibrate the unit for a given block or sample, first turn off the unit using the ON/OFF switch. Then
place a thermometer of known accuracy
PEQLAB_v0312_E
Turns primary power on and off at back side of unit
Displays temperature
Raises/lowers temperature
Switches the unit between set and heating mode
Illuminates red when unit is in heating mode
Illuminates red when unit is in heating mode and unit is actually applying
heat to the block.
Illuminates green when unit is in set mode
1
into the block thermometer hole or a thermocouple or other
7