VA 520 flow meter with integrated DN 25 measuring section with flange
0695 2523
VA 520 flow meter with integrated DN 50 measuring section with flange
0695 2525
VA 520 flow meter with integrated DN 65 measuring section with flange
0695 2527
VA 520 flow meter with integrated DN 80 measuring section with flange
0695 2528
Application-technological features of the flow meters VA 520
Diggital interfaces such as Modbus-RTU, Ethernet (PoE) and M-Bus enable agement systems, building managment systems, PLC, ...
Easy and affordable installation
Units freely selectable via keys on the display m3/h, m3/min, l/min, l/s, kg/h, kg/min, kg/s, cfm
Compressed air counter up to 1,999,999,999 m3 can be reset to "zero" via keypad
Analog output 4...20 mA, pluse output (electrically isolated)
High measuring accuracy even in the lower measuring range (ideal for leakage measurement)
Negligibly small loss of pressure
Calorimetric measuring principle, no additional pressure and temperature measurement necessary , no mechanically moved parts
Comprehensive diagnostic functions can be read out on the display or remote access via Modbus-RTU such as exceeding max./min values °C, calibration cycle, error codes, serial number. All parameters can be read out and changed via Modbus
Technical Data VA 520
Parameters
m3/h, l/min (1000 mbar, 20 °C) in case of compressed air or Nm3/h, Nl/min (1013 mbar, 0 °C) in case of gases
1 pulse per m3 or per litre electrically isolated. Pluse weight can be set on the display. Alternatively, the pluse output can be used as an alarm relay
Supply
18...36 VDC, 5 W
Burden
< 500 Ω
Housing
Polycarbonate (IP 65)
Measuring section
Stainless steel, 1.4404 or 1.4571
Process connection
Flange (in acc. with DIN EN 1092-1 or ANSI 150 lbs or ANSI 300 lbs)
Mounting position
any
Flow measuring ranges VA 520 (max version 185 m/s) for compressed air (ISO 1217: 1000 mbar, 20°C)
Flange DIN EN 1092-1
Measuring section
Outer pipe mm
Inner pipe
Measuring range full scales
L
L1
H
H1
ØD
ØK
n x ØL
mm
m3/h
(cfm)
mm
mm
mm
mm
mm
mm
DN 25
33.7
27.3
290
170
475
275
223.2
165.7
115
85
4 x 14
DN 50
60.3
53.1
1195
700
475*
275
248.2
165.7
165
125
4 x 18
DN 65
76.1
68.9
2050
1205
475*
275
268.2
175.7
185
145
8 x 18
DN 80
88.9
80.9
2840
1670
475*
275
275.7
175.7
200
160
8 x 18
* Attention: shortened inlet section. Please observe the recommended minimum inlet section (length = 15 x inner diameter) on site.