Guidelines For Optimal Temperature Control - Velp Scientifica Ecodryblock Bedienungsanleitung

5. Guidelines for optimal temperature control

Sample and blocks preparation
•
To prevent sample loss due to evaporation and ensure precise thermoregulation of the samples, use sealed
containers during the process;
•
Ensure the liquid volume inside tubes or vials is below the top edge of the block;
•
Select the correct block for the container being used. A block that closely matches the dimensions and shape of the
container maximizes heat transfer efficiency and ensures temperature stability within the samples;
•
Avoid big air gaps between the vessels and block wells.
Accurate temperature reading
•
When using an external temperature probe, ensure it is fully immersed to the bottom of the vessel for accurate
temperature measurement;
•
Ensure proper contact between the heating plate and blocks to achieve optimal thermal conductivity. Both surfaces
should be smooth, flat (not deformed), and free of scratches. Improper contact can lead to unstable temperature
control and slower heating;
•
Use two single blocks or one double block to ensure optimal temperature control. If only one single block is used,
position it on the left side of the heating plate;
•
If the block is supplied with screws (only for "COD" double blocks), it can be secured to the heating plate to prevent
movement, minimize the risk of damage, and enhance thermal performance. Before fastening the block to the plate,
ensure both contact surfaces are perfectly clean and not damaged. Tighten the screws with low torque to not
damage the plate's threads;
•
During operation, consider the physical and chemical properties of the sample, as they can influence temperature
stability and measurement accuracy.
Note: only place compatible blocks on the heating plate
Temperature control with internal sensor
•
When the external probe is not plugged in the unit, the temperature control relies on the internal temperature
sensor, placed on the heating plate;
•
When using the Internal sensor for temperature control, the set temperature is the one of the heating plate,
regardless of the actual temperature of the sample or the blocks;
•
The real temperature of the block, and therefore of the samples, may differ from the set temperature. To
compensate for this, the device allows the user to apply an adjustable temperature offset to the internal probe
reading. To set the offset value,
Temperature control with external sensor
•
For more precise temperature regulation, use the external probe (accessories: Pt1000 code A00000458; Pt100
code A00000268) connected to the dedicated socket (D). In this configuration, temperature control is based on the
external probe, and the set temperature corresponds to the temperature measured by the probe;
•
The use of the external probe allows to thermoregulate directly the sample or the block, ensuring optimal accuracy;
•
The external probe can be positioned in the designated hole of the blocks or directly in the sample. Proper probe
placement is essential to prevent overheating or inaccurate readings;
•
Use sealed vessels to maintain temperature stability during measurement with the external probe.
External probe adjustment
•
Certain sample types or vessel characteristics may cause heat dissipation, causing the sample temperature to differ
from the setpoint. To compensate for this, the device allows the user to apply an adjustable temperature offset to
the external probe reading
•
To set the offset value,
see chap. 4 – User Menu Page – Heat. plate Cal.
see chap. 4 – User Menu Page – Probe Cal.
13