Chapter 5 - Accessories
UM-22100H-U User manual ATEQ D520 Page 102/122
2. OPTIONAL ACCESSORIES
2.1. FLOW MASTER LEAKS
The flow master leaks are used to check the calibration of flow measurement
instruments. They are delivered in a case, attached to a connector which depends on
the value of the flow are delivered with a calibration certificate.
Note: the values displayed in the table above are given for information purposes; in
effect the value of the standard leaks can vary by +/- 15%. The real flow rate of each
master leak is accurately measured and given with an accuracy of +/- 1.5 %.
The master leaks:
9 Must be used with clean and dry air.
9 Must be stored in there boxes when not in use.
9 Must be periodically cleaned in acetone or trichloroethylene.
9 Must be checked periodically, to guarantee there accuracy (our metrology
laboratory can carry out this service).
Option: a second master leak can be integrated if requested for the eventual control of
the first or to replace it during a check.
Nozzle type/flow in dm
3
/h
(air to 15°C and 1013 mbar)
PRESSURE 10 20 35 59 80 112 160
2 kPa
(20 mbar)
0,98 5 17 51 93 180 405
10 kPa
(100 mbar)
2,64 13 40 117 221 387 922
25 kPa
(250 mbar)
4,36 21 64 185 354 607 1473
50 kPa
(500 mbar)
6,54 29 90 262 482 890 1947
100 kPa
(1 bar)
9,6 43 129 372 676 1262
150 kPa
(1,5 bar)
12,4 54 162 468 850 1599
200 kPa
(2 bar)
15,0 65 194 545 1010 1909
250 kPa
(2,5 bar)
17,7 76 227 638 1185
300 kPa
(3 bar)
20,4 88 260 729 1357
350 kPa
(3,5 bar)
23,4 100 293 819 1524
400 kPa
(4 bar)
25,2 110 325 910 1694
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