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Low Temperature Check

Automatic instrument for the determination for both TR TEST and BRITTLENESS POINT




Gibitre Low Temperature Check
is currently installed in
23 countries
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Overview 
Tests at low temperatures permit to evaluate the crystallization effects and to compare viscoelastic properties of rubber and rubber-like materials at low temperatures. Temperature Retraction and Brittleness Point tests are useful for the selection of materials suitable for low-temperature service.

Instrument characteristics 
The structure of the Low Temperature Check has been designed to permit the installation of arrangements for TR and Brittleness point tests.
The structure includes all common parts required for low temperature testing:
• 5 litres thermal insulated stainless steel bath for cooling liquid.
• Heat exchangers for bath cooling - thermal resistance for bath heating
• PT 100 thermal sensor and PID thermoregulator with 0.1°C accuracy for the automatic regulation of both cooling and heating
• Stirrer for bath homogenization
• Compressed air pressure control and cleaning system.
• Electronic card for the complete control fitted with usb port for connection to pc.
• Safety devices: independent bath overheating controller, thermal switch, pneumatic lock for sample holders.
• CE Labelling
Cooling system 
The bath cooling devices provided by Gibitre can be either:
• Nitrogen tank
• Refrigeration unit.

The regulation of the cooling is automatically controlled by the instrument according to the temperature set of the test procedure in use.
 
Temperature Retraction (TR) Test: Instrument Setup 
The arrangement for TR test includes:
• Sample holder for the simultaneous test of 6 samples
• Pneumatic lifting system for the easy handling of the sample holder
• Windows bases software for TR test performance
The Sample Holder makes it possible to:
• Carry out simultaneous testing on 6 samples.
• Read automatically the retraction of each sample with 0.02 mm resolution
• Lock sample position in extended position during test preparation
• Automatically release of test samples at the end of the conditioning time.

TR Test Software 
The software permits to:
• Select the Test Procedure, which autmatically sets the instruments
• Enter samples identification (up to 3 products)
• Cool and condition the samples
• Start the test
• Plot Retraction Curves for each sample
• Calculate test results and statistics
• Check tolerance limits for each product
• Save results and curves in the standard Gibitre SQL Database

Test report 
Can be printed or saved to pdf in one of the available languages. The format of the Test Report can be customized by the user.

Example of test Report
Brittleness point test: Instrument setup 
The arrangement for Brittleness Point test includes:
• Pneumatically actuated striker
• Sample holder for the simultaneous test of 10 samples
• Windows bases software for Brittleness Point test performance
• Datagest software for database management.

The striker is in compliance with international standards and the clearance can be set according to the kind of test (4.8, 5.2, 5.7, 6.4 mm). A pneumatic piston drives the striker and permits to perform the tests while the samples are immersed in the cooling liquid. A pressure regulator enables the speed of the striker to be adjusted in compliance with standards depending from the number of samples and the density of the cooling liquid in use.
The software permits to prepare and store test procedures with custom test conditions.

Software for Brittleness Point 
The Brittleness Point Software permits to:
• Select the Test Procedure, which automatically sets the instrument
• Cool and condition the samples
• Activate the striker at the end of the conditioning time for the sampes
• Record the temperature and the speed of the striker
• Allow the user to enter test results after visual inspection
• Prepare the instrument for the next test Temperature
• Calculate and save Brittleness Point Temperature

Test report for Brittleness Point Test 
Can be printed or saved to pdf in one of the available languages. The format of the Test Report can be customized by the user.

Example of test Report

Datagest program 
The Datagest program is the database management tool always installed in combination with all Gibitre instrument-control programs.
The program permits to:
• Select, filter, print, export and analyse the test results stored with all the instruments connected.
• Prepare test procedures by defining the test conditions and the results to be produced
• Set tolerance limits for each product by manual insertion or using the statistical analysis (mean and standard deviation) of saved results
• Prepare multi-instrument test reports

Gibitre Standard SQL Database 
All the Gibitre programs use a database with SQL structure for saving the results.
The database can be installed inside an SQL instance present on the company server or it can be installed on a PC connected to a measuring instrument. The installation of the Microsoft SQL service (Express version) is included in the delivery.

Industry 4.0 integration 
The instrument and the software have been specifically developed to optimize integration with other environments.
The database in SQL format and the Gibitre_Company_Connect program allows you synchronize your company management software with Gibitre database and to speed up the identification of the tests and to use bar-code readers or similar devices.
The automatic logging service permits to send alarm information to the cloud-service platform of Gibitre Instruments in order to optimize the reaction times of the Service Support.

Cutters for sample Preparation 
Die cutters conforming to international standards for preparing samples for TR-Test and Brittleness Point Test. The cutters are provided with dimension calibration report
Templates for Different TR Samples 
The templates allow you to change the reference distance of the specimen holder support in order to use the different types of specimens required by the ISO 2921 and ASTM D1329 standards.

Standard Calibration service for Low Temperature Check 
The calibration is performed with reference to the requirements of ISO 2921 and ISO 812 standards.
The service includes:
• Ordinary maintenance of the instrument
• Calibration of the temperature of the cooling bath at 4 temperatures (0, -5, -35, -70°C).
• Calibration of the heating speed (gradient) of the cooling bath
• Calibration of the time reading device
• Calibration of the displacement of the 6 extensometers for TR Test (at 50, 70, 100 mm run).
• Verification of the pre-load force on the extensometers
• Calibration of the speed of the striker.
• Calibration of the distance between the nose of the striker for Brittleness point test and the sample holder.
• Issue and e-mail shipment of the Calibration Certificate with traceability to primary standards.

Sample Calibration Report

Hardware requirements 
• Programs can be installed on standard PCs with WINDOWS 7, 8 or 10 OPERATING SYSTEMS.
• The CONNECTION between the instruments and the PC is made using the USB CABLE supplied with the instrument.
• The programs are COMPATIBLE WITH ANTIVIRUS, and other programs installed on the PC.

Safety devices 
The instrument is equipped with:
• Safety sensor for automatic blocking of heating at room temperature
• Safety Push-button
• CE Labelling

Development and production 
The instrument is totally developed and produced in the plant of Gibitre Instruments in Italy.
All the mechanical parts are produced in the company workshop using modern CNC machines.
Components and sensors from well-known brands are selected in order to ensure the maximum reliability in the measures
Internal trained personnel takes care of all the production stages: assembly, start-up, calibration, packing, shipment and installation.

 
Technical specifications
Reference Standards
Standards the instrument complies with:  FIAT 50416; FIAT 50419; ASTM D1414; ISO 974; ASTM D746; ISO 812; ISO 2921; ASTM D1329; ASTM D2137;  
Test Temperature
Cooling systems  With Refrigeration unit or
With Liquid nitrogen tank 
Test Temperature  -120 ÷ +20 °C (with liquid nitrogen tank)
-70 ÷ +20 °C (with refrigeration unit) 
Temperature Control  The regulation of the temperature is performed automatically by the instrument according to the temperature set in the selected test Procedure.
The regulation is made by means of thermo-regulator with PID microprocessor with 0.1 °C accuracy 
Temperature Retraction (TR) Test
Sample holders for TR Test  Permits to test 6 samples at the same time
Resolution for retraction reading: 0.02 mm 
Software for TR Test  The program Gibitre-TR-test, compatible with Windows 7, 8 and 10, controls the complete test sequence and permits to save test results and retraction curves in the standard SQL gibitre database  Numerical Test Data - TR test  TR-Test: TR10, TR30, TR50, TR70, TRx (x customer defined) Time at set TR.  Graphic representation and printout  Curves of % Retraction vs. Temperature for each sample. Temperature vs Time  Lifting System  Pneumatic system for lifting sample holder for TR-Test. 
Brittleness Point Test
Sample holders  Sample holder for 10 samples.  Software for Brittleness Point Test  The program Gibitre-Brittleness-test, compatible with Windows 7, 8 and 10, controls the complete test sequence and permits to save temperature retraction temperature in the standard SQL gibitre database  Test Results Stored - Brittleness Point  Test temperature, Striker Speed, Result of visual inspection (passed - failed)   Speed of striker for Brittleness Point test  Pressure regulator for pneumatic piston Striker with automatic or manual start-up  Gap between striker and sample holder   Can be set to: 4,8 5,2 5,7 6,4 mm 
Construction Characteristics
Test chamber  Test chamber capacity of 5 litres; Stainless steel chamber equipped with mixer to ensure the temperature of the test bath is uniform (ethyl alcohol - silicon oil).  Weight  120 Kg  Power Supply  220 VAC,50/60 Hz, single phase (110 VAC, 60 Hz on request)  Electrical Power  750 Watt  Compressed air  Min 6 bar. Air treatment unit (cleaning and lubrication) is included.  Instrument dimensions  (Width x Depth x Height) 700 x 710 x 1500 mm 
Safety Devices
Safety Devices  Safety Pushbutton
Safety temperature limit switch
CE labelling  
Labelling  CE Labelling 
Calibration
Calibration Report  Calibration report with traceability to primary standards in conformity with the Calibration requirements specified in ISO 2921 and ISO 812 standards.  Calibrated parameters  • Temperature of the bath (0, -5, -35, -70°C)
• Heating speed of the cooling bath
• Test Time
• Displacement and pre-load of the 6 extensometers for TR Test
• Speed of the striker for Brittleness Point
• Distance between striker and sample holder 
Personal Computer (optional)
Minimum configuration  Intel Core i3 2 GB RAM  Compatible Operating Systems  Windows 7, 8 and 10 (64 bit)  Connection to the instrument  USB port  Software usage Languages  Italian, English, French, Spanish, German, Portuguese, Russian, Chinese, Japanese, Turkish, Polish, Czech 
Download
Product leaflet

General catalogue

Calibration certificate
example
CE certificate
example
 
 
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