Microprocessor controlled leak tester 3925-0050 - Hematech ...

Prüfmaschinen
Microprocessor controlled leak tester
3925-0050
In General
Automation and humanization of the workplace are
factors that have to be considered along with quality
assurance. To test batch production parts for leak, it is
therefore necessary to integrate the leak test in the
manufacturing cycle.
Automatic control cycle,
Storage of test programs,
Contamination-free test,
Reproducible measuring results,
Short cycle times with high accuracy,
Clear result signals,
Measured value display,
Variable test pressure and test times to suit the
production of most different components,
User-friendly operation due to interactive user
guidance,
Industrially produced equipment,
Easy maintenance due to modular construction,
Small size.
Differential pressure test method
Differential leak testing has very good sensitivity and
can be easily integrated into most automated systems.
Compressed air serves as the test medium, resulting in
relatively low operating costs and freedom from
contamination.
Low viscosity air quickly penetrates porosity or other
sources of leakage. Cleaning and drying of previously
tested parts, as well as corrosion protection, are not
required. Maintenance of the test system is minimal.
As for all pressure leak test systems leak free test fixtures
and related components are required.
Leak Test FLow Test Volume Test Test systems Test Machines
Operating principle:
The operating principle is based on measuring the pressure
drop or rise in sealed chamber (test part) within a given
measuring time. The measuring system consists of a
differential pressure transducer with automatic zero-point
adjustment.
Operating
The programming of the control parameters is menucontrolled,
no special knowledge is required. All
parameters required by the control program are
highlighted and stored in program memory. A write
protection switch secures data safety; while this switch is
activated, parameters can be read but not modified.
Higher-level control systems are able to communicate with
the leak tester via a parallel interface. A serial interface is
available for connection with a computer or printer.
Pneumatic module
Construction
Microprocessor controlled electronic pressure regulation for
fill- and test pressure, Pneumatic controlled isolation valve
to eliminate temperature influence, Temperature
compensated differential pressure transducer with overload
protection up to 150 bar, Function monitoring,
Optional Leak simulation with precision needle valve
(leak calibrator 3925-0201) can be attached externally).
Electronic module
Construction
Microprocessor system with battery-buffered RAM memory,
alphanumeric control panel for all input functions, 5”
display, write protection key against unauthorized change
of test parameters, monitoring of components and function
procedure, Error message via clear text on display, higherlevel
control systems are able to communicate with the leak
tester via a parallel interface..
HeMaTech Prüftechnik GmbH & Co.KG DE 71409 Schwaikheim
Executive Manager: Harald Hellerich Siemensstraße 7
HRA 2216 Registration office Stuttgart Phone +49 (0)71 95/13 69 -0 E-mail:: info@hematech.de
VAT identification number: DE 814 209 649 Fax +49 (0)71 95/13 69 -29 Internet: www.hematech.de

Technical data:
Microprocessor: Modular system
Program storage: Battery buffered RAM
Measuring sensor: Temperature compensated
transducer for differential
pressure overload
protection 150 bar/g.
Control panel LCD-Display
(320x240 Pixel),
Alphanumeric control
panel for all input functions
Measuring range: 0 ... 3000 Pa
others on request.
Sensitivity: 1 Pa
Measuring unit: (pressure drop or pressure
rise)
Pa; mm WC; mbar; psi;
mm HG, ml/min.
Parameter sets: 99
Pressure ranges: 0 ... -1.0 bar/g; -0.7 … -0.1 bar/g
0 ... 1.0 bar/g; 0.15... 2.5 bar/g;
0.2 ... 6.0 bar/g;
0.5 ... 10.0 bar/g;
0.5 ... 12.0 bar/g,
others on request.
Test parameters: Filling pressure … bar,
Test pressure … bar,
Fill time 0.1 ... 999.9 sec,
Stabilizing time 0.1 ... 999.9 sec,
Measuring time 0.1 ... 999.9 sec,
Rework from ...
Reject from ...
No. of consecutive rejects
Write protection: Switch lock.
Status indicator: Accept
Rework
Reject
Fault
Leak simulation ON
Interfaces: 1 parallel control I/O-port
Control input:
1 Bit Automatic
1 Bit Program Selection
1 Bit Start
1 Bit Leak simulation
ON/OFF
1 Bit Static Test ON/OFF
8 Bit External Program Select
1 Bit Abort Test
Control output:
1 Bit Ready to operate
1 Bit Ready to test
1 Bit Fault
1 Bit Accept
1 Bit Rework
1 Bit Reject
1 Bit Measuring
Leak Test FLow Test Volume Test Test systems Test Machines
1x Serial Port RS 232
for Parameter down load, Counter and
data logging,
max. 4 Serial ports optional available,
RS 323 and/or RS 485 optional.
Profibus DP is optional available.
Chassis: 19"-rack, 3 HU
Dimensions: 170 x 535 x 400 mm (H x W x D)
Power supply: 115 /230 V ± 10%
50 … 60 Hz (auto select)
Power consumption: Approx. 100 VA
Air supply: Approx. 1, 5 bar > Test pressure,
max. 10 bar/g, filtered, dry and oil free
Pneumatic ports: Air supply G 1/4"
optional test medium port G1/4”
Test port G 1/8"
Reference port G 1/8”
Venting: muffler G 1/4"
Weight: Approx. 15 kg
Standard accessories:
Power cord, length approx. 2.5 m
Spare key for write protection
Operating manual
Leak Tester
Order-No.: 3 925-0050
Specifications and technical data are subject to change
without notice
HeMaTech Prüftechnik GmbH & Co.KG DE 71409 Schwaikheim
Executive Manager: Harald Hellerich Siemensstraße 7
HRA 2216 Registration office Stuttgart Phone +49 (0)71 95/13 69 -0 E-mail:: info@hematech.de
VAT identification number: DE 814 209 649 Fax +49 (0)71 95/13 69 -29 Internet: www.hematech.de