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6. Tests
The sample version of the leak detector in the variant DL 400 was tested with
reference to the Technical Description with design drawings and circuit
diagrams as well as installation and operating instructions and software
documentation, for compliance with the requirements of the approval
principles for leak detection systems.
The following tests were carried out:
1.
Test of the electrical equipment (without taking account of explosion
protection).
2.
Switching cycles at various limit temperatures (-25°C to +70°C)
3.
Testing the visual and audible alarm
4.
Pressure and leak tests of the installations
7 Test
results
The Leak detector DL.. fulfilled the requirements stipulated in the approval
principles for leak detection systems. The parts of the sample unit conform
with the Technical Description and drawings. The function tests on sample unit
leak detector type DL400 showed that the unit withstands the loads and
remains fully functional. The parts of the electronic circuit integrated in the unit
remained fully functional even under the temperature loads.
The mechanical function tests and software test produced positive results.
Undefined measured values, incorrect calibrations and failure of the system
cycle triggered the alarm.
The function tests over 440 hours also produced positive test results. Leak
detector DL 400 fulfils the requirements made of it with regard to monitoring
the overpressure generated in the interstitial space with an automatic alarm on
reaching the alarm pressure. The leak detector pump is capable of
compensating for pressure fluctuations caused for example by changes in
temperature. The switching values of the pressure switch (alarm ON > 400
mbar, pump ON <500 mbar) are met as stated in the Technical Description.
The pressure switching values remain within the stated tolerances even at the
limit temperatures of -25°C and +70°C.
Evaluation of continuous operation of the unit as a whole – the unit was
subject to 10,000 load cycles – also produced no notable deviations in the
pressure switching values or restrictions in its functioning ability.
Measurement of the volume flow using a suspended particle flow meter
showed that the volume flow at the stated alarm switching value of 400 mbar
amounts to 85 + 15 l/h (see curves). The flow rate of the pressure pump is
adequately rated.
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Содержание DL 100
Страница 19: ...I I II II III III IV IV 21 21 21 21 20 20 20 20 27 11 2002 P 060 000 Druckleitung Messleitung 19 von 49 ...
Страница 20: ...Ex Ex Ex 17 102 72 73 43 13 27 11 2002 M1 060 000 76 30 21 20 70 20 von 49 ...
Страница 21: ...Ex Ex Ex 73 73 73 230 V 50 Hz 21 02 43 20 13 72 27 11 2002 M2 060 000 71 69 01 09 21 von 49 ...
Страница 22: ...27 11 2002 M3 065 000 45 71 29 69 01 09 103 104 14 Ex Ex Ex 73 73 73 230 V 50 Hz 21 02 43 20 13 22 von 49 ...
Страница 24: ...27 11 2002 SL 853 600 2 6 4 5 3 11 12 1 AC DC 105 106 102 71 01 69 24 1 59 09 76 17 60 Rp 24 von 49 ...
Страница 26: ...22 84 85 85 22 52 98 98 0 Kl 1 0 17 12 2002 P 115 392 21 21 20 20 90 90 26 von 49 ...
Страница 34: ...28 06 2005 Drilling Dimension 200 300 260 220 T 140 8 34 von 49 ...