HBM U2B, Инструкция по монтажу, Страница: 10 / 60

10
U 2B
H BM A03823.3en/de/fr
3 O p erati on on site
3.1 Ambie n t tem p erat u re
For optimum measurement results, keep to the rated temperature range. The
best conditions are constant or
v er y slo w l y changing temperatures. Measure
ment errors due to temperature are the result of une v en w arming (e.g. radiant
heat) or cooling. A radiation shield and allround heat insulation pro v ide noti
ceable impro v ements. H o w e v er, the y should not be allo w ed to form an y kind
of force leakage.
3.2 H u mi d ity
H umidit y ha v e no effect on the measurement capabilit y of the transducer, pro
v ided the y are w ithin the specified limit v alues (protection s y stem IP67 in ac
cordance w ith DI N E N 60529).
NO T E
Mo ist u re s hou l d no t be all o we d t o p e n etrate t h e free e nd o f t h e c onn ec
t o r cable.
3.3 Ambie n t p ress u re
Ambient pressure should be bet w een 0 and 5 bar. Please note that changes
of pressure alter the zero point:
Ne nn last 20 k N 500 N 1 k N 2 k N 5 k N 10 k N
Zer o po i n t m od ificati on
[% se n sitivity/10 mbar]
"
0.004
"
0.141
"
0.071
"
0.035
"
0.014
"
0.007
Ne nn last 50 k N 100 k N 200 k N
Zer o po i n t m od ificati on
[% se n sitivity/10 mbar]
"
0.002
3.4 Con tami n ati on
Dust, dirt and other foreign bodies should not be allo w ed to accumulate to
such an e x tent that part of the measured force is di v erted to the housing so as
to falsif y the measured v alue (force leakage).