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ABB FAM540 Series Metal Cone Variable Area Flow Meter

Metal Cone Variable Area Flow Meter
FAM540 Series

VA Master FAM540 variable area flowmeters are installed vertically in a pipeline. The flow must travel in an upward direction. Keep the meter as far as possible from pipeline vibrations and powerful magnetic fields. The pipeline should be the same size as the connection size of the flowmeter. Inlet and outlet straight pipe length are not required.

Operation

A variable area flowmeter is specified for a defined set of operating conditions. For liquids and gases, these are pressure and temperature-related properties (density and viscosity) under operating conditions. For gases, in particular, this means operating at a specific pressure and temperature. The specified accuracy of the instrument is always based on these operating conditions.

Pressure drop

The available operating pressure at the flowmeter must be higher than the pressure drop listed for the flowmeter in these specifications. It is important to also consider the pressure drop downstream from the flowmeter due to losses in the pipeline and other fittings.

Damping and compression oscillations when metering gases

If a specific critical volume is exceeded between the closest throttling locations up and downstream of the flowmeter, compression oscillations (float bounce) may occur when the operating pressure is low. If the minimum required upstream pressure listed in this specification is not maintained, then the flowmeter must include a gas damping option

• For metering liquids, gases and steam
• Graphic, 2-line display
• Magnet stick operation - Configuration also possible with closed housing
• Easily adjustable for new operating conditions
• Approvals for explosion protection
  - ATEX Ex d, Ex ia, Ex nA, c, dust-ignition proof
  - IECEx Ex d, Ex ia, Ex nA, dust-ignition proof
  - FM XP, IS, DIP, NI AEx d, AEx ia, AEx nA
  - CSA XP, IS, DIP, NI Ex d, Ex ia, Ex nA

Select a link under the "item" tab below to order.

Table 1Table 2Table 3Table 4Table 5Table 6Table 7Table 8
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Table 1Display Type / Output Signal
AAnalog indicator / Without
BAnalog indicator / Min-alarm
CAnalog indicator / Max-alarm
DAnalog Indicator / Min- and max-alarm
EAnalog indicator / 4 ... 20 mA with HART protocol
FAnalog indicator with LCD display / 4 ... 20 mA with HART protocol
Table 2Housing Material / Cable Entry
1Aluminium / Cable gland M20 x 1.5
2Aluminium / Thread 1/2 in NPT (Ex d with cable gland)
Table 3Explosion Protection
Y 0Without
B 1ATEX / IECEx (Zone 2/21), Ex nA, c, Ex tD 1)
A 4ATEX / IECEx (Zone 1/21), Ex ia, Ex nA, c, Ex tD 1)
A 9ATEX / IECEx (Zone 1/21), Ex d, Ex ia, Ex nA, c, Ex tD 3)
F 3FM / CSA, Class I, Div 1, 2 (Zone 1, 2), XP + IS, NI 3)
F 4FM / CSA, Class I, Div 1, 2 (Zone 1, 2), IS, NI 4)
Table 4Process Connection
F 1Flange
F 2Flange with groove (DIN 2512)
Table 5Connection Size
ADN 15 (1/2 in.)
BDN 25 (1 in.)
NDN 40 (1 1/2 in.)
CDN 50 (2 in.)
DDN 80 (3 in.)
EDN 100 (4 in.)
Table 6Float Design
1Standard
3With gas damping
Table 7Pressure Rating
D2 PN 16
D4 PN 40
D5 PN 63
D6 PN 100
A1 ASME CL 150
A3 ASME CL 300
A6 ASME CL 600
J1 JIS K10
Table 8Design Level
XSpecified by ABB
Design Heating jacket design
Measuring range
See 7.3 "Flow range tables"
Water at 20 °C (68 °F): 28 l/h ... 53 m3/h / 0.125 ... 235 gpm
Air at 0°C and 1013 mbar: 0.83 ... 1550 m3/h Qn / Air at 70°F and 14.7 psia: 0.62 ... 960 scfm
Flow range ratio 10:1
Scales Percentage scale
Direct reading scale
Accuracy Standard class 1.6 acc. to VDI 3513 page 2, optionally 1 % of full scale
Connections Flange acc. to DIN 2501 (DN 50 [2"] ... DN 100 [4"]); acc. to EN 1092-1 (DN 25 [1"])
Flange acc. to ASME B16.5
Heating jacket connection Internal thread G 1/4, at the back of the flowmet
Pressure rating
See 7.2 "Material loads"
Standard pressure rating: PN 40 (PN 16 for DN 100 [4"])
Flange acc. to DIN / EN: PN 16, PN 40, PN 63, PN 100
Flange acc. to ASME CL 150, CL 300, CL 600
Max. perm. operating pressure 100 bar (CL 600), (higher pressures available upon request)
Installation length Heating jacket design: 250 mm (9.84"), meter size DN 15 ... DN 80 (1/2 ... 3")
Materials Metering tube: Stainless Steel 1.4571 (316 Ti)
Insertion cone: Stainless Steel 1 4571 (316 Ti), DN 15 (1/2") only
Flange: Stainless Steel 1 4571 (316 Ti)
Float: Stainless Steel 1 4571 (316 Ti) standard
Stainless Steel 1 4571 (316 Ti) / float head: Hastelloy C (2.4610), optionally
Gas damping: Stainless Steel 1.4571 (316 Ti)
Indicator housing: epoxy-coated aluminium alloy
Housing gasket (O-ring): Buna N
Viewing window: Shatterproof glass
Temperature ranges Permissible temperature of measured medium: -55 ... 400 °C (-67 ... 752 °F)
Permissible ambient temperature: -40 ... 70 °C (-40 ... 158 °F)
Refer to the temperature diagram on page 5.
For Ex designs, see chapter Explosion-protection relevant information.
Gas damping Prevents compression oscillations in case of gas measurements with low operating pressure
Weight (kg) Model Meter size
DN 25 (1") DN 50 (2") DN 80 (3") DN 100 (4")
Display with/without alarm 6.8 10.7 15.7 34
4 ... 20 mA without display 6.8 10.7 15.7 34.1
4 ... 20 mA with display 6.9 10.8 15.8 34.2
SIL classifications SIL2 declaration of conformity for meters with alarm function
Manufacturer's declaration (SIL1) acc. to IEC 61508 / IEC61511 for meters with 4 ... 20 mA current output


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