Contact
We answer your questions:
Tel.: +49 (0) 71 95-13 69 0
eMail: verkauf(at)hematech.de
Compressed air is used as test medium resulting in low operating costs and freedom from contamination.
Cleaning and drying of previously tested parts, as well as corrosion protection, is not required.
Automation of the workplace nowadays have to be realized even in quality assurance and the equipment used. To test production parts for volume, it is necessary to integrate the leak test in the manufacturing process.
Important features of the VOLUME TESTER 3925-0360 are:
- automatic control cycle
- storage of test programs
- contamination free test
- reproducible measuring results
- short cycle times with high accuracy
- unambiguous results
- measured value display
- programmable test pressures and test times to suit testing to the production of many different components
- user friendly operation with interactive user guidance
- modular design concept for ease of maintenance and service
Operating principle
The operating principle is based on the interdependence of the state variables volume, pressure and temperature. The definition can be deduced by the ideal gas law.
Determination of the volume difference in 2 locked volumes within a given measuring time.
A differential pressure measuring sensor serves as transducer (to reduce the dependency on variations of the filling pressure).
A volume (comparison volume) corresponds to the master volume.
Operation
A write-protect key switch ensures data security. Data can be read but not modified by the operator.
Machine control systems are able to communicate with the leak tester via the standard parallel (discrete I/O) interface or various other optional interfaces.
A serial interface is available to connect the leak tester with a computer or printer. Other optional protocols are available (see technical data).
Pneumatic System
- heavy-duty, robust diferential pressure transducer
• overload protection to 150 bar/g
• temperature compensated
• easy to maintain
- microprocessor controlled electronic pressure regulator for filling and test pressure
Electrical System
- modular design microprocessor system
- battery buffered RAM for data protection
- alphanumeric keypad
- 5 inch color display
- write-protect key switch to prevent unauthorized program changes
- error message as plain text
- menu guided programming and adjustment of parameters
- various interface ports to communicate with control systems (see technical data)
Technical data
| Program storage: | Battery buffered RAM | |
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| Measuring sensor: | Temperature compensated transducer for differential pressure, overload protection 150 bar/g | |
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| Display: | 5 inch color liquid crystal display, 320x240 Pixel | |
| Keyboard: | Alphanumeric | |
| Measuring range: | ± 0 ... 6,000 Pa, others on request |
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| Resolution: | 1 Pa, by means of high resolution SigmaDelta A/D converter, 1 converter per channel |
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| Measuring unit: | ml or l | |
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| Test programs: | up to 99 | |
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| Filling and test pressure: | electronic pressure control with tolerance monitoring 0 ... 1 bar/g (others on request) |
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| Test parameters: | Upstream pressure ... bar Compensation time 0.1 ... 999.9 s Feeding time 0.1 ... 999.9 sec Measuring time 0.1 ... 999.9 sec Lower tolerance limit LT Upper tolerance limit UT No. of consecutive rejects |
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| Write protection: | Key switch | |
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| Status indicator: |
Upper tolerance |
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| Test data storage: | Up to 8,000 tests (internal battery buffered RAM) for larger data storage use front connection for external USB memory stick optional: larger internal memory is available |
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| Interfaces: |
1 parallel control I/O port Control inputs: |
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| Control outputs: 24 V DC; 500 mA short circuit proof 1 Bit Ready to operate 1 Bit Ready to test 1 Bit Error 1 Bit O.K. 1 Bit Lower tolerance 1 Bit Upper tolerance 1 Bit Measuring |
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1x Serial Port RS 232 port or USB 2.0 for transfer of parameters, test results and counter readings. 1x USB 2.0 for transfer of parameters, test results and counter readings. Optional Bus Interfaces: |
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| Housing: | 19" rack mount case, 6 HU | |
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| Dimensions: | 300x590x420 mm (HxWxD) | |
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| Power supply: | 115 /230 V ± 10% 50 ... 60 Hz | |
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| Power consumption: | Approx. 100 VA | |
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| Air supply: | Test air: 1.5 bar > max. test pressure Control air: max. 10 bar/g filtered, dry and oil-free |
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| Pneumatic ports: |
Air supply G 1/4" |
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| Weight: | Approx. 20 kg | |
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| Standard accessories: | Power cord, length approx. 2.5 m, Spare key for write protection, Operating manual |
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| Order-No.: | Volume Tester 3925-0360 | |
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| Specifications and technical data are subject to change without notice |
Contact
HeMaTech Prüftechnik GmbH & Co. KG
Siemensstr. 7
D-71409 Schwaikheim
Measurand Pressure
Tel.: +49 (0) 71 95-13 69 0
Fax: +49 (0) 71 95-13 69 29
eMail: verkauf@hematech.de
ISO 9001:2015
