WIKA RVM/U-L-1 Operating Instructions

Operating instruction FWS-RVM/U-L
9 Specifications
Operating Data RVM/U-L-1
Pressure: brass PN 250 bar
Pressure: stainl. steel PN 300 bar
Pressure drop.: 0,02 - 0,4 bar
Temperature max.:
Accuracy:
Electrical Data: SPST N.O.
IP65 ( ) max. 250V
max. 250V
plug connection DIN43650 Form A or C
• 3A •
IP67 (with 1m sealed in cable)
100 VA
M 12x1 plug
not available
Temperature max. 85°C
Atex II 2G EEx m II T6 max. 80°C max. 250V • max. 250V •
(2m sealed in cable IP67) 2A • 60VA 1A • 30VA
EEx m II T6 max. 80°C max. 250V • max. 250V •
2A • 60VA 1A • 30VA
Output signal: The contact switches off, if minimum flow is below setpoint
Power supply:
Cable diameter for IP65: 6 - 8 mm
Grade of pollution:
Other plug types or cable lengths on request
Materials
Wetted parts:
Spring (wetted parts)
Magnets (wetted parts)
Seals (with reducers only) NBR (other on request)
(1) Minimum load 3VA
RVM/U-L-1 RVM/U-L-2
SW D
RVM/U-L-4 17 17
RVM/U-L-2 27 31
RVM/U-L-1 41 47
Overall dimensions mm
WIKA Alexander Wiegand SE & Co. KG
Alexander-Wiegand-Straße 30
DE-63911 Klingenberg/Main
-4-
RVM/U-L-2 RVM/U-L-4
PN 250 bar PN 300 bar
PN 350 bar PN 350 bar
0,02 - 0,3 bar 0,02 - 0,2 bar
100°C (optional 160°C)
±10% of final value
SPDT SPST N.O. SPDT SPST N.O.
max. 250V
max. 230V • max. 200V • max. 200V •
• 1,5A • • 1,5A •
3A • 60VA 1A • 20VA 1A • 20VA
50VA (1) 50VA (1)
max. 125V • max. 125V • max. 125V • max. 125V •
3A • 60VA 1,5A • 50VA 1A • 20VA 1A • 20VA
max. 250V • max. 250V •
not available
2A • 60VA 1A • 30VA
max. 250V • max. 250V •
not available
2A • 60VA 1A • 30VA
not necessary (reed contacts)
4 - 6,5 mm
2 (EN 61058-1)
brass stainl. st.
brass 1.4571 (316 ti)
1.4571 (316 ti)
hard-ferrite
Viton (other on request)
RVM/U-L-4
B G DN T L
47 1/4" 8 10 65
52 1/2" 15 14 90
3/4" 20 21 152
76
1" 25 17 130
All rights reserved
Operating instruction FWS-RVM/U-L
Content
1 Preface
2 Safety hints
3 Principle of operation
4 Installation
5 Electrical connection
6 Switch point adjustment
7 Maintenance
8 Fault finding hints
9 Specifications
SPDT
1 Preface
The flowmonitors type RVM/U-L prove themself through
reliability and simple handling. To use the advantages
of the instrument to the full extent, please take notice
of the following:
Every person, in charge of commissioning and
operating this instrument, must have read and
understand this
specially the safety hints!
2 Safety hints
2.1 General hints
The instructions contained in the operating instructions
must be followed to ensure a safe operation of the
instrument. Further, the additional Legal- and safety-
regulations for the individual application must be
observed. Accordingly this applies for the use of
accessories as well.
2.2 Application as directed
The instruments, type RVM/U-L, serve as monitors
for continuous flow of gaseous media. Any other use
counts as nondirected. If not indicated otherwise, the
scaling of the instruments refer to air. Special applica-
tions, where intermittent loads (e.a. cyclic operation)
could occur, should be discussed and checked with our
technical Staff.
With every start up it should be watched that the
shutoff valves are opened slowly, this is to avoid line
shock, which can damage the instrument.
In general should fast changes of the operating conditi-
ons (pressure, temperature, flow) be avoided.
The instruments, type RVM/U-L, must not be used as
single source to avoid dangerous situations on machi-
nery and in plants.
Machinery and plants must be constructed in that way,
that faulty conditions do not lead the operators into dan-
gerous situations.
2.3 Qualified personnel
The instruments, type RVM/U-L, must only be installed
by qualified personnel, which is capable of using these
instruments in a professional manner. Qualified per-
sonnel are such persons, which are familier with the
erection, installation, commissioning and operation of
these instruments and which hold a corresponding
qualification for this function.
-1-
3 Principle of operation
....................................... 1
..................... 1
................. 1 The instruments type RVM/U-L operate on the principle
...................................... 1 of the float type flow indicator. Through the flowing
................... 2 medium a float is set in motion, whose integrated
......... 3 magnets create a magnetic field. The position of the
........................ 3 float is detected with the switch contact. The float is
........................... 3 reseted to the starting point by means of a spring, which
............................... 4 allows the installation in any position in a system. The
instruments are adjusted for the installation with flow
from bottom to top. The weight of the float influences the
measuring result, therefore a different mounting position
will show discrepancies to the actual flow
4 Installation
operating instruction and 4.1 Process connection
Caution! To avoid the damage of the flowmonitor or the
installation the following requirements must be fulfilled
under any circumstances:
- suitable process connection has to be provided
- connection size to be checked
- thread depth to be checked
- suitable sealing material to be used (liquid sealing
material will damage the flowmonitor if it gets inside)
- professional sealing
4.2 Enviroment conditions
- The flowmonitor must not be used as a supporting
part in a pipe construction.
- The medium must not contain any solid particles.
Magnetic particles will accumulate at the magnetic
float and effect the function.
- Before employment of anti-freeze and anti-corrosive
check compatibility.
Warning! The following requirements must be adhered
to, otherwise the function of the flowmonitor will be
affected or the measuring results will be falsified:
- External magnetic fields will influence the switch
contact. Keep sufficient distance to magnetic fields
(e.a. Electricmotors).
- Piping, process connections or supports made from
ferromagnetic material influence the magnetic field
of the flowmonitor. Keep a space of 100mm to those
materials (e.a. steel).
- The accuracy is influenced by cross-section chan-
ges, branches or elbows in the piping. Provide a
straightening section of 10x DN upstream and 5x
DN downstream of the instrument. Never reduce the
pipe diameter direct ahead of the instrument!
- With liquids ensure through suitable steps the de-
areation of the instrument.