ABB FAM540 Series Metal Cone Variable Area Flow Meter
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 1 | Table 2 | Table 3 | Table 4 | Table 5 | Table 6 | Table 7 | Table 8 |
| X | X | X | X | X | X | X | X |
| Table 1 | Display Type / Output Signal |
| A | Analog indicator / Without |
| B | Analog indicator / Min-alarm |
| C | Analog indicator / Max-alarm |
| D | Analog Indicator / Min- and max-alarm |
| E | Analog indicator / 4 ... 20 mA with HART protocol |
| F | Analog indicator with LCD display / 4 ... 20 mA with HART protocol |
| Table 2 | Housing Material / Cable Entry |
| 1 | Aluminium / Cable gland M20 x 1.5 |
| 2 | Aluminium / Thread 1/2 in NPT (Ex d with cable gland) |
| Table 3 | Explosion Protection |
| Y 0 | Without |
| B 1 | ATEX / IECEx (Zone 2/21), Ex nA, c, Ex tD 1) |
| A 4 | ATEX / IECEx (Zone 1/21), Ex ia, Ex nA, c, Ex tD 1) |
| A 9 | ATEX / IECEx (Zone 1/21), Ex d, Ex ia, Ex nA, c, Ex tD 3) |
| F 3 | FM / CSA, Class I, Div 1, 2 (Zone 1, 2), XP + IS, NI 3) |
| F 4 | FM / CSA, Class I, Div 1, 2 (Zone 1, 2), IS, NI 4) |
| Table 4 | Process Connection |
| F 1 | Flange |
| F 2 | Flange with groove (DIN 2512) |
| Table 5 | Connection Size |
| A | DN 15 (1/2 in.) |
| B | DN 25 (1 in.) |
| N | DN 40 (1 1/2 in.) |
| C | DN 50 (2 in.) |
| D | DN 80 (3 in.) |
| E | DN 100 (4 in.) |
| Table 6 | Float Design |
| 1 | Standard |
| 3 | With gas damping |
| Table 7 | Pressure Rating |
| D | 2 PN 16 |
| D | 4 PN 40 |
| D | 5 PN 63 |
| D | 6 PN 100 |
| A | 1 ASME CL 150 |
| A | 3 ASME CL 300 |
| A | 6 ASME CL 600 |
| J | 1 JIS K10 |
| Table 8 | Design Level |
| X | Specified 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 |
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| Flow range ratio | 10:1 | ||||
| Scales | Percentage scale Direct reading scale |
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| 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 |
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| 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 |
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| 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 |
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| 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. |
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| 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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