Modernization of the MOM Q-1500 D ( Paulik-Paulik-Erdey ) Derivatographs and others

The MOM Q-1500 D ( Paulik-Paulik-Erdey ) derivatographs are the equipment of many chemical laboratories. Although the findings quality is enough good, but the further data handling makes serious difficulties. Laborious to measure distance and height of peaks on the paper, the calculation of their surface area, determination of tangents and similar operations consume a lot of time and provide an opportunity to miscalculation. To say nothing of the fact that recorders are very often break down...
Meanwhile remedy the evil is very simple :

Data Acquisition on IBM PC

The DERYWAT System appears in two versions with different properties and advantages.
Both versions works on IBM PC under Windows 95 / 98 / NT / 2000 / XP.

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• The recording version utilizing analog/digital converter card with PCI bus and program DERYCARD for data acquisition.

  Technical specification :

  • analog signals measurement resolution : 4096 levels ( 12 bits )
  • number of data points : up to 20000
  • minimal time interval between points : 2 seconds
  • maximal time of measure with time interval 2 s : 40000 s ( 11h 6' 40'' )
  • maximal number of simultaneous measurements : 1

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• The recording version utilizing analog/digital converter card + temperature control module. The old Hungarian temperature control module is eliminate, and its role take over computer's software DERYPID and an integrated circuit for heating controle.
  No more dependence on archaic, electromechanical device, where senile, plastic racks lose its teeth and the temperature instead of uniformly go up every now and then stop.
  
  What is more, new measurement methods are implement :
  • isothermic, when the operator defines sophisticated methods of thermal cycling ( ramp, drop, soak )
  • quasi-isothermic, when the temperature ramp stops until the phase transition end

  Control software feature :

  • Heater temperature range : -30 .. +1500^oC
  • Temperature Ramp / Drop range : 0.01 .. 50^oC/min
  • Soak time range : 0 .. 10080 min ( 7 days )
  • maximal number of temperature ramp / soak segments : 8
  • PID parameters setting range
    • P : 0 .. 100 %/^oC
    • I : 1 .. 999 s
    • D : 0 .. 240 s
  • Storage capacity of circular buffer with heater temperature history : 10000 points
  • The period for the temperature history : >= 1 s
  • Full history of the temperature, set point and heating power stored in the monitoring file
  • Simultaneous plotting the temperature and the set point as a function of time

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Software features :

• Smoothing of the DTA line
• Removing of the DTA null level drift
• Removing of the DTA bulge ( correction with the measurement of empty crucibles )
• Defining of the DTA peaks
• Calculating of the DTA peaks area
• Smoothing of the TG line
• Defining of the TG inflexion points
• Printing of the user-definable diagrams on any Windows printer
• Saving of the user-definable diagrams to a BMP, GIF, JPG files

Calcium Oxalate


Calcium Sulfate Monohydrate

If you are interested in MOM Q-1500 D ( Paulik-Paulik-Erdey ) derivatograph modernization contact us.