NUBIS MWN 130-NC
Propeller flow sensor with horizontal rotor
axis DN40 to DN300
NUBIS MWN 130-NC
The product is a propeller flow sensor intended for heat meters, with a horizontal rotor axis, aligned in parallel to
the water piping centre line, and a low startup threshold. The latest engineering and processing design solutions
applied in the product provide reliable readings and facilitate integration in non-standard installation configurations,
including intermediate orientations between the horizontal and vertical ones, without any impact on the metrological
ratings.
Application
MWN 130-NC is a propeller flow sensor intended for integration with an indicating calculator of a heat meter. The
propeller flow sensor can be applied in water metering systems with the medium temperature between 0.1°C and
130°C and a maximum operating pressure of the medium at 16 bars (PN 16). The propeller flow sensor can be installed
in horizontal piping (H) with the counter upward or in vertical or tilted piping (V) with the counter to the side - or at
any orientation in between the two (H/V) — of heat supply systems at multi-family houses or industrial facilities
Standard NC pulse transmitter
wiring length: 2 m
Protection against external,
mechanical or magnetic tampering
Reed relay NC pulse transmitter
with the counter mechanism
unit
and magnetic coupling
Rotor assembly with double-sided
(hard) bearings
Interchangeable metering unit
Epoxy powder coating with
superior anti-corrosive resistance
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Advantages
Safety:
protection against:
– magnetic field tampering (anti-magnetic shields),
– mechanical tampering (counter cover).
Convenience of use:
easy installation,
modular design.
Reliability:
robust, heavy-duty design,
unified interchangeable metering unit,
high anti-corrosive and damage resistance performance of the paint coat (made by epoxy powder coating).
Key features
wide measurement range with a low starting threshold,
hard propeller bearings,
environmental class C,
hermetically sealed dial and barrel counter,
counter mechanism rotation lock at 360° of turn,
easy reading by freely rotating the counter at any orientation,
resistant to external magnetic fields Low pressure loss.
Regulatory and standard compliance
Directive 2014/68/EU of the European Parliament and of the Council of 15 May 2014 on the harmonisation of the laws of the
Member States relating to the making available on the market of pressure equipment
EN 1434-1:2007 Heat meters, Parts 1-6
OIML R 75:2002 and OIML R 75:2006 Heat meters, Parts 1-3
EC type examination certificate no. SK 11-MI004-SMU001
Classification of environmental, climate and mechanical conditions: Class B (ref. PN-EN 14154-3:2005:A1)
Classification of mechanical environment conditions: Class M1 (ref. Polish Regulation Dz.U. 2006.12.18)
Classification of electromagnetic environment conditions: Class E1 (ref. Polish Regulation Dz.U. 2006.12.18)
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Table 1. Technical data
Typ MWN 130- 40- 50- 65- 80- 100- 125- 150- 200- 250- 300-
NC NC NC NC NC NC NC NC NC NC
Nominal diameter DN mm 40 50 65 80 100 125 150 200 250 300
Minimum flow rate qi m3/h 0,6 0,6 1 1,6 2,4 4 6 10 40 60
Nominal flow rate qp m3/h 15 15 25 40 60 100 150 250 400 600
Maximum flow rate qs m3/h 30 30 50 80 120 200 300 500 800 1200
Measurement range, R qp / qi - 25 25 25 25 25 25 25 25 10 10
Indicating range - m3 106 107
Resolution of reading - m3 0,0005 0,005 0,05
Maximum
MAP - PN16 PN10
permitted pressure
Operating pressure range - bar od 0,3 do 16 od 0,3 do 10
Maximum pressure loss ΔP - ΔP10 = (0,10 bar)
Temperature range: - - θ min = 0,10°C, θ max = 130°C
Minimum upstream/
dowstream - mm 0
straight-line piping length
Operating orientation - - H,V
Maximum permitted error
Ef % ±(3+0,05 qp/qi) and up to ±5%
(accuracy class 3)
Environmental class - - C
Reed relay NC pulse dm / 3
- 100 1000
transmitter pulse
225
Length L mm 200 200 200 250 250 300 350 450 500
200*
H mm 65 72 83 95 105 120 135 160 193 230
h mm 177 187 197 219 229 257 357 382 427 497
Height
H1** mm 277 287 297 339 349 377 582 607 652 722
Dz mm 150 165 185 200 220 250 285 340 400 460
13,7 /
Weight kg 8,3 10,3 11 16 18,5 40,5 51,5 75,5 103,5
14,2*
* On request.
** Metering unit's removal clear height.
Flange bolt pattern: PN-EN 1092-2 (PS/PN: 10), DIN2532, DIN2501 (PN10), BS4504 (PN10);
PS/PN: 16 (to DN 200) available on request.
H1
Dz H
4
Pressure loss chart
Pressure loss
12 C
C
25 C
C
C
M N NC
65 C
NC
10 C
0N
5N
0N
W 00 N
0N
0N
N N
N N
W 0
W 50
W 80
30
15
mbar kPa
2
N
M N
N
N
N
W
W
M
M
M
M
M
1 000 1 00
1 00 10
10 1
1 0,1
1 10 1 00 1 000 1 0000
Flow [m3/h]
Typical error chart
Error [%]
5
-1
-2
-3
-4
-5
qi qp qs
Flow rate [m3/h]
Connections for a remote transmission of readings and flow rate measurement
WM-BUS
M-BUS
RS232/ RS485 Modbus RTU/Lumbus
white
Reed relay pulse LonWorks
Water meter transmitter (NC) brown Faun RS OPTO
analog outputs (4-20mA/1-10V)
pulse outputs
opto connector
W4
W2
W3
W1
5
The data shown here is current on the date of issue.
The manufacturer has the right to modify and improve the products without notice.
This publication is indicative only and should not be construed as a commercial offer under the Polish Civil Code.
Apator Powogaz S.A.
Jaryszki 1c, 62-023 Żerniki, Poland
Office: sekretariat.powogaz@apator.com, tel. +48 61 84 18 101
Sales / Customer Service: tel.: +48 61 84 18 149
Customer Service Centre Support: handel.powogaz@apator.com
Export: export.powogaz@apator.com
Technical Support: support.powogaz@apator.com, tel. +48 61 8418 131, 134, 294
Warranty Claims: reklamacje.powogaz@apator.com
www.apator.com 2023.022.EN
