LabKit-rcf Heat Flow Reaction Calorimeter

LabKit-rcf is a reaction calorimeter with sophisticated equipment for heat flow calorimetry. The automatic laboratory process plant is suitable, among other things, for syntheses in the temperature range from -40 to +200 °C. The system is expandable with the additional modules and components which are offered.

System construction

A double-walled 2 litre reaction vessel is used as the standard vessel.
Other vessels are possible.

The reaction vessel is temperature-controlled using a powerful heating/cooling thermostat, enabling fast temperature control for an isothermic mode of operation.

The reaction calorimeter may be extended for thermal balance calorimetry and may be expanded using options such as:

  • Inerting
  • Vacuum
  • Distilling
  • Reflux

When distilling with reflux separators, the reflux separation ratio may be adjusted via an electrically controllable reflux separator.

Measurement method

The heat flow method is based on the measurement of the temperature difference between the reactor contents and medium in the vessel jacket.

The heat transition coefficient cannot be theoretically calculated. Since it can vary significantly during the course of a reaction (e.g. as a result of a change in the viscosity, the specific heat of the reaction mixture or due to boundary layer formation), it is determined by calibration with a defined heat output before and after the reaction.

Frame Square anodised aluminium profile, electrical lowering equipment for the reactor vessel, stainless steel drip tank
Reactor 2-litre double-walled glass vessel, temperature control jacket , PTFE bottom drain valve, cover with centre neck and 6 connecting pieces, relief valve 200 mbar, air escape valve
Stirrer ViscoPakt®-rheo-57 precision stirrer drive with speed control and torque measurement, anchor stirrer
Heating/cooling system Heating/cooling thermostat, -40…+200 °C, air/compressor cooling, heating power 1.5 kW, cooling power up to 0.48 kW (200 °C)
Dosing station One GraviDos® dose loop for liquids (controlled dropping funnel), 500 ml receiver tank, gravimetrically controlled
Automation LabManager® 3 interfaces 8 Pt100 precision temperature measurement inputs, 8 analogue inputs (current and voltage), 4 RS232 interfaces, 4 GraviDos® connections, 4 digital inputs, 8 digital outputs, controllable calibration heating device 50 W glass lance (optionally stainless steel)

HiTec Zang OS, TFT monitor, uninterrupted power supply with UPS management software
Sensors Calibrated temperature sensors for: reactor, thermostat, influx, reflux, head temperature and the environment, pressure sensor: 0…1.600 mbar absolute, stirrer: speed, torque
Materials Mainly borosilicate glass, PTFE, PVDF, Viton, stainless steel material 1.4571 (changes are possible)
Analysis KalDas calorimetry analysis software
Product code Description
VL-LABKITRCF1 LabKit-rcf, reaction calorimeter for heat flow calorimetry
VL-LABKITRCONLF HiText program for simple online heat flow analysis
SF-PID8 Controller module with 8 PID and application oriented controllers
SA-KALDAS3 Analysis program for heat flow and thermal balance calorimetry on LabKit-rcb
SL-DIAPROT HiText module dialogue and report forms with charts and tables
SI-LABVIPCALO LabVision® software package for VL-LABKITRCF1 and VL-LABKITRCB1