Performance unit for the generation of a defined ambient temperature for the cement calorimeters of the ToniCAL series

Cement Calorimeter ToniCAL Trio – Model 7339

Computer controlled isothermal heat flow calorimeter with three measuring cells for the continuous determination of the total evolved heat of hydration of binding materials, preferably cement according to ASTM C1702.

Key benefits for the user:

✓ Detection of the initial peak
✓ Self-calibration function by operator
✓ Three thermally insulated measuring cells in one calorimeter vessel, offset by 120°
✓ Rigid, durable measuring instrument for industrial and laboratory tasks
✓ Difference in temperature between measuring cell and ambience
✓ Extension for testing additives by adapting an after-injection module with homogenization function
✓ Test method with great informational value and with very good reproducibility
✓ Independent, timely varying parallel use of the three measuring cells in all operation modes
✓ Very high detection sensitivity by three switchable measuring ranges for different types of binding materials
✓ Evaluation of the results via computer with numerical and/or graphical output

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Categories: Cement, Heat of Hydration (Calorimeter), Testing Instruments

Description
Additional information

Description

Working Principle

A defined quantity of the pulverized sample portion is filled in a thin walled measuring vessel (test glass and placed in one of the three measuring cells in the calorimeter vessel. A further vessel (injection syringe) with the fluid portion is integrated into each sample vessel. Simultaneously or timely independent two or three measuring cells can be filled with the same or different materials.

A totally tempered inert sample with the same filling height and an empty fluid vessel is allocated to each measuring chamber. After the thermal balance is reached in the measuring cell(s) the both reaction partners (normally binding building materials and distilled water) will be mixed under pressure within few seconds.Using an optional later injection module, designed for two fluid vessels, a further reaction partner (additive as BV, FM or others) can be dosed later and mixed with the ductile sample by the aid of a manually operated agitator rod. Directly with the mixing of the reaction partners starts the continuous recording of the thermo voltage [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 detection and evaluation for the test is realized by the software ToniDCA which can be installed on a common PX system (limited IBM) from Pentium II with the operation systems Windows 95/98/2000/NT/XP.

Additional information

Power supply:	Voltage = 115 / 230 V Frequency = 50 / 60 Hz Power = < 250 VA
Dimensions:	Control unit (width x depth x height) 325 x 280 x 310 mm Calorimeter block (height x diameter) 600 x 375 mm
Weight:	Control unit = 25 kg Calorimeter block = 36,5 kg
Integrated measuring cell:	Heating period = <8 h Ambient temperature = 20 °C Ambient temperature area = +3 … 50 °C Working temperature area = ambient temperature + 5K °C
Initial weight:	Solid (depending on grinding fineness) = 10 g Liquid (depending on W/Z value) = 5 g
Detection barrier:	2,25 µW/g