Description
Design
The ToniCAL Hexa is a further development of the proved ToniCAL Trio (model 7339). It consists of a three piece control device in a support and a separated round ca lorimeter vessel with housing made of stainless steel.
Components of the control device:
Electronic thermostat to guarantee a constant temperature within the measuring vessel and in the measuring cells
Electric calibration unit with access to each measuring cell with variable adjustable voltage from 0 – 3 V DC; thus the five calibration steps could be choosen free
Six high stable, three step, switchable measuring amplifier for the thermo signal voltage which has to be measured
Six indications for the thermo signal with an RS232 serial interface and one indication for the temperature in the measuring vessel
Components of the calorimeter vessel:
Six thermal insolated measuring cells with each two measuring chambers for the placement of the measuring and the inert sample and the corresponding sensors for detection of the thermal voltage
The sensors between measuring and inert sample which are connected in difference
One central and six radial heat sources placed opposite to the axis of the measuring cells
Six independent acting feeding devices for the constant and quick mixing of the reaction partners within the six sample vessels
Working Principle
A defined amount of the pulverized sample is filled into a thin walled measuring vessel (usual test glass) and placed in one of the six measuring cells within the calorimeter vessel. A further vessel (re-usable injection syringe) with the fluid portion is integrated into each sample vessel. Simultaneously or timely independent all measuring cells can be filled with the same or different materials. A totally tempered inert sample with the same filling height is allocated to each measuring chamber.
After the thermal balance is reached in the measuring cell(s) the both reaction partners (normally binding materials and distilled water) will be mixed under pressure within a few seconds.
Using an optional later injection module, designed for two fluid vessels, a further reaction partner (additives as BV, FM or others) can be dosed later and mixed with the ductile sample by means of a manually operated agitator rod. Directly with the mixing of the reaction partners starts the continuous recording of the thermovoltage [mV] as measure for the produced quantity of heat.
All measured values, graphics and test parameters will be stored in a database and can be exported.
The complete data capturing and evaluation for the test is realized by the software ToniDCA, which is installable on a common PC system (limited IBM) from Pentium II with the operation systems Windows 95/98/2000/NT/XP
