Displaying items by tag: EN_196_9 | Ibertest Internacional

COMPUTERISED LANGAVANT-TYPE CALORIMETER

COMPUTERISED SEMI ADIABATIC LANGAVANT-TYPE CALORIMETER

According to Standards: EN 196-9

To determine cement hydration heat by semiadiabatic calorimetry, in J/g.

CONTENT

2 calorimetric bottles(optional up to 7 calorimetric bottles), one of them is the reference bottle which contains a mortar specimen tempered at least 12 months before, so considered inert.
2 Pt-100 3 wire probes:one for the reference bottle and the other for the test one. Max temperature 250ºC, with 3m silicone wire
50 mortar tins
1 Electronic module:4 measuring channels for Pt-100 probes(allowing the connection up to 3 test calorimetric bottles and 1 reference bottle, according to stated in the standard) with RS-232 port for PC connection. If there’s a need to connect more than 4 bottles, it’s possible to supply 2 modules, obtaining this way 8 measuring channels.
2 Pt-100 3 wire probes:one for the reference bottle and the other for the test one. Max temperature 250ºC, with 3m silicone wire. Temperature measuring precision: better than+ 0,3º C.
1 Data acquisition system:formed by on PC, software WINTEST.LANG under WINDOWS, TFT screen and printer.
1 instrumented table:for placing the module/s, PC/s, TFT screen and the printer.

CALORIMETRIC BOTTLE

The calorimetric bottle is formed by a high vacuum Dewar flask, made of silvered Pyrex glass. This cylindrical flask with hemispherical bottom is 95 mm internal diameter, 280 mm high and 120 mm external diameter, closed by an insulating stopper housed in a rigid container used as a support. At the bottom of the flask a rubber disk 85 mm in diameter and 22

5 mm thick supports the specimen and distributes the load over the glass wall.

The flask housing has a wide base to ensure good stability and is very rigid (duralumin 3 mm thick). There is a 5 mm clearance (air) between the housing and the flask, which sits on a 4-5 cm thick base made of a low thermal conductivity material. The upper edge is in contact with a crown-shaped buffer attached to the housing and also made of low thermal c

onductivity material, which holds the flask in place and gives the stopper a support surface to ensure the flask-stopper assembly is airtight. A rubber seal is placed between the edge of the flask and the buffer.

Calorimetric_bottle_langavant

NOTE: All the calorimetric bottles are calibrated by the “Laboratoire Régional des Ponts et Chaussées” (France) and a label attached to each bottle indicates the coefficients of heat loss and heat capacity of the empty bottle.

MORTAR TIN

The mortar tin is a cylindrical container with a lid, with a volume of 850 cm3 and holds the tempered mortar which will form the specimen.
This disposable container is steamtight at pressure of 0.3 bars. It is made of tin and is 80 mm diameter, 165 mm high and 0.3 mm thick.
In the middle of the tin lid, a tube is located to insert the measurement element (thermopar, Pt 100 probe, or thermometer). It is approximately 100 to 120 mm long, in order to reach the central inner part of the specimen.

ELECTRONIC MODULE

4 channels for Pt-100 temperature probes (min -200ºC, max +850ºC)

Rs232 for PC connection.
16 bits A/D converter
Linearity: +/-0,1% F.E.
Temperature deviation: +/-0,01%/ºC at F.E.
Protocol MODBUS RTU/ASCII
Sampling speed: from 0,5 to 2 readings per sec, depending on the number of simultaneous channels.
Isolation 2000 Vac(3 ways).

Exiting current: 0,350 mA.
Compliance with: EN standards, Electromagnetic (CEE/336/89),Immunity EN 61000-6-2.Emissivity EN 61000-6-4
Data transfer speed: max 38,4 Kbps.
Maximum distance: 1,2 Km.

The module is supplied with an appropriate box including power supply.

langavant_data_adquisition

DATA ACQUISITION SYSTEM

PC, flat TFT 17” screen, keyboard, mouse, WINDOWS XP O.S., user license and color printer.
Data Acquisition software WINTEST.LANG, for the hydration heat determination by means of semi adiabatic method.

WINTEST.LANG SOFTWARE

Fully developed by IBERTEST for the Langavant test. WINTEST.LANG designed to work with up to 8 channels at the same time.Allowing a continuous reading of the reference heat and the amount of heat transmitted by the samples placed in the test.
It calculates the hydration heat of each sample showing the test results graphics according to standard.

MAIN FEATURES

Tree structured software with easy test configuration. Allows the viewing of current or saved tests simultaneously.
Simultaneous formula management, up to 7 test bottles and one reference bottle.
Real time graphics, to show the variation of the temperature with time referred to the reference bottle.
Help menu. Consisting of a complete manual for each application.
Temperature Reading periods adjustable by the user or defined by the standard.
User friendly even with people not used to work with PC.
Auto save: test data are stored automatically in the hard drive to be recovered for further analysis.
Test files could be exported to a Excel file (csv)

TELEDIAGNOSIS

(Optional accessory, to be demanded separately) To correct and detect software problems via modem. Fax-modem board is installed in the PC.

This service connects the customers PC with the Technical service of IBERTEST. Written chat, file transfer and distance command of the PC is possible.If needed the Technical service of IBERTEST takes remote control of the customers PC, reviewing the configuration and solving the problema if it’s base on a software problem.

It’s possible to detect and correct other problems with peripherals, without displacing a technician to customers installations.
Reduces costs and machines stopped time. Customer on

Cement Testing Equipment and Materials Testing.

Published in PHYSICAL PROPERTIES

Materials Testing, Cement Equipment, Tensile Steel Test, Universal Devices, blaine finesses, mortar mixer, vicat, le Chatelier, jolting table, Langavant, EN-12390, EN-10002-1, EN-196, ASTM C-305, Quality Control Projects