THE METER OF CHOICE
Since the late 1970’s, the Vortex direct steam flow meters have been acknowledged as the industry standard for direct steam flow measurement
SIZING INFORMATION
The low-end performance of the meter is a function of the fluid’s
ability to generate a vortex, which using ultrasonic technology is at the
very threshold of when vortices for a given fluid are shed. This threshold
is dependent on fluid velocity, density and Reynolds number. The high end
of the flow meter is amplitude limited, which ultimately impacts the electronics
ability to distinguish one vortex from another. In most cases, this represents
250 ft/sec for gases and 33 ft/sec for liquids.
To guarantee satisfactory performance, we will check every vortex meter
application for suitability and will require process medium, pressure, temperature
and expected minimum and maximum flow rates. For easy reference, we are providing
you with a table (see below) for saturated steam at various pressures. The
tables list the minimum and maximum flow capability, between which a flow
measurement can be made at stated accuracy. Outside those limits, the accuracy
will deteriorate somewhat, the extent of which will depend on the quality
of the installation.
Saturated Steam Flow Range Table
(Steam Flow in lbs/hr)
| Saturated Steam Flow Range Table. (Steam Flow in lbs/hr) | Water/Condensate Range Table. | ||||||||
| Pipe/Meter Size |
5 PSIG | 10 PSIG | 20 PSIG | 50 PSIG | 100 PSIG | 150 PSIG | Meter Size |
Water (GPM) |
Condensate (lbs/hr) |
| Size 0.5" | 13-85 | 14-105 | 17-140 | 23-255 | 30-435 | 35-615 | 0.5" | 1.7-27 | 800-12800 |
| Size 1" | 30-260 | 35-325 | 40-440 | 55-790 | 70-1355 | 80-1915 | 1" | 3.5-82 | 1730-396400 |
| Size 1.5" | 60-625 | 65-765 | 80-1050 | 105-1885 | 135-3235 | 165-4565 | 1.5" | 7-196 | 3540-94600 |
| Size 2 " | 100-1020 | 110-1265 | 130-1740 | 175-3120 | 230-5360 | 270-7565 | 2" | 12-325 | 5875-156720 |
| Size 3 " | 190-1980 | 215-2420 | 250-3355 | 335-6025 | 440-10345 | 520-14600 | 3" | 24-627 | 11330-302550 |
| Size 4 " | 335-3450 | 370-4260 | 435-5860 | 580-10500 | 765-18050 | 905-25490 | 4" | 41-1095 | 19775-528065 |
| Size 6 " | 730-7550 | 810-9330 | 950-12830 | 1275-23000 | 1670-39540 | 2095-55810 | 6" | 80-2400 | |
| Size 8 " | 1565-13500 | 1740-16880 | 2040-22940 | 2730-41160 | 3580-70700 | 4255-99790 | 8" | 187-4290 | |
| Size 10" | 2825-21000 | 3140-25800 | 3680-35470 | 4930-63650 | 6460-109300 | 7675-154300 | 10" | 330-6630 | |
| Size 12" | 4050-30000 | 4500-3700 | 5270-50800 | 7060-91150 | 9250-156550 | 10990-221000 | 12" | 475-9500 | |
