Vortex flow sensing technology relies on measuring the number of vortex pulses generated by a bluff body immersed in the flow stream. The SMC Vortex meter uses dual sensor technology, producing two independent vortex signals which allows for signal amplification and common mode noise reduction. The ALVT-mass is our multivariable vortex meter with a high-accuracy velocity sensor, a precision platinum RTD temperature sensor, and a pressure transducer with flow outputs for both volumetric and mass flow rates.
Our sensors never touch the process fluid; the piezo electric crystal flow sensors are bonded behind a stainless steel wall. The electronics pick up the slightest pressure pulsations generated by the vortices through the stainless steel wall. This design allows meters to have an extremely wide turndown while maintaining an almost unlimited upper end and a high-pressure rating.
| Process Connections: | Threaded, Flanged, Ball Valve, Weldolet |
| Process temperature: | 32 to 590 °F (0 to +310 °C) |
| Operating pressure: | up to 985 psi (68 bar) |
| Velocity Range: | Depends on fluid, pressure and temperature:Liquids: ≤ 1.5~30 feet/sec (0.4~9 m/s)Gas & Steam: 5-300 fps (1.5-90) |
| Accuracy (and linearity): | ± 1% of Reading |
| Repeatability: | ± 0.25% of Reading |
| Turn down ratio: | > 30:1 |
| Material : | 316SS or Carbon Steel |
| Signal output: | 2-wire 4-20ma, Pulse |
| Display: | 2 Lines, 16 Alphanumeric Characters Each |
| Keypad: | 4-button membrane type |
| RAM Back-up: | Lithium Battery |
| Data logger: | 16K, sampling times from 1 to 256 minutes |
| Electronics: | NEMA 4X/IP 66, CE |
| Ex-protection: | UL, CSA, FM, Class I Group B, C, D, Class II Groups E, F, G |
| Cable (remote version): | 300′ (90 meters) max |
| Weight (approximate): | ALVTN-S :13 to 17 lbs (6 to 8 kg)ALVTN-H :17-26 lbs (8-12 Kg)ALVTN-W 20-200 : 4-26 lbs (2-12 Kg)ALVTN-F 20-300 : 2-110 lms (4-50 Kg) |
| Communication: | RS232 |
| Power requirements : | 110/220 VAC, Isolated 14 – 36 VDC |
| NIST traceable: | Liquids and gasses only |
| Data storage: | EPROM storage up to 10 years |
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