Tecsis P2590, Руководство по эксплуатации

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!
Caution
Operating instructions 13
BD_BE_460 d 06/2011
GB
1. Safety instructions ... 3. Operating principle
1. Safety instructions
The appropriate national safety regulations (i.e. VDE 0100 /
EN 60 079-14 / EN 837-2) must be observed when installing, commis-
sioning and operating these instruments.
„
Do not work on gauge while under voltage (applies to Model P2590 with
switch and with version without indication)
„
Serious injuries and/or damage can occur should the appropriate regulations
not be observed
„
Only appropriately qualified personnel should work on these instruments
2. General
These operating instructions are based on the following information:
„
EN 837-2: Selection and installation recommendations for pressure gauges
Data sheet DE480: -Differential pressure gauge with integrated working
pressure gauge
- Differential pressure gauge with integrated working
pressure gauge and micro switch
- Differential pressure switch
3. Operating principle
The
j
and
i
measuring medium chambers are separated by an elastic
diaphragm. The differential pressure causes an axial movement (measured
travel) in the diaphragm against the measuring range spring. The measured
travel is proportional to the differential pressure and is transmitted,
„pressure sealed“ and with minimal friction,
via a connecting rod; for:
Model P2590
- with process pressure gauge:
to the movement
- with switch:
to the movement and in addition
to the plungers on the microswitches
- with switch version without indication:
to the plungers on the microswitches