304 SS Turbine Flow Meters With 37° Flare Fittings

OMEGA™ FTB-201 Series turbine meters have male flared-end fittings for easy connections. They are built to meet the performance requirements of MS 33656, though they do not carry a military specification. These units come with a mating 2-wire connector and can be supplied with the integrally mounted signal conditioners to provide 4 to 20 mA, 0 to 5V, and factored pulse outputs.

Flow Straightening
Proper application of a turbine flowmeter requires that there be a suitable piping section both downstream and upstream of the meter if it is to achieve optimum accuracy. Whereas an inlet straight pipe run of 10 pipe diameters and an outlet straight pipe run of 5 pipe diameters provide the necessary flow conditioning in general, some applications require an upstream flow straightener. Such applications include custody transfer. A flow straightener consists of a section of piping which contains a suitably dimensioned and positioned thin walled tube cluster to eliminate fluid swirl. (see full specifications for “Typical Turbine Meter Installation Drawing”.

37° Flare Installation Kits
Installation kits with the required up and downstream straight pipe lengths for proper turbine operation are available. Installation kits for turbine meters with 37° flare end fittings consist of two lengths of stainless steel tubing cut to a length appropriate for the upstream and downstream straight pipe runs and flared at one end. Mating sleeves and nuts are included. The kits can be conveniently butt-welded into the piping system. Flow straightening sections may be provided with the installation kit. Kits are available in tubing sizes from ½ to 2 ½”.

Strainers and Filters
Turbine meters are intended for clean fluid service only; where there is any doubt concerning possible particulate impurities in the process fluid, strainers are recommended. A strainer/filter may be required to reduce the potential hazard of fourling or damage that can be caused by foreign matter. Pipe rouge, the extremely fine rust which develops on the inside of some piping, is a serious problem for turbine meters, due to the difficulty in filter out these particles. Consult Omega Flow Engineering Department for applications that may entail pipe rouge.

When using FTB-200 Series units for fluids with viscosities other than 1 centistoke, special calibrations and universal viscosity curves are available, consult OMEGA’s Flow Engineering Department for quote.

Meter Size	Mesh Size	Maximum Partical Size (in)
1/4 to 1/2″	100	0.0055
5/8 to 1 1/4″	70	0.008
1 1/2 to 2 1/2″	40	0.015

SPECIFICATIONS
Accuracy: ±0.5% of reading
Repeatability: ±0.1% of reading
Temperature Range: -268 to 232°C (-450 to 450°F)
Maximum Intermittent Overrange: 150% of maximum range
Materials of Construction:
   Body: 304 SS;
   Rotor: 17-4 PH SS
   Bearings: 440C SS
Installation Kits: 340 SS, 1.7 mm (0.065″) thick
Electrical: Two-wire connector, included
Max Pressure Drop: 0.34 bar (5 psi)

Model No.	37° Flare Fitting Size	Linear Range Water	Max Operating Pressure	Length	Nominal K-Factor pulses/gal	Weight kg (lb)
FTB-201	3/4-16 UNF-3A	0.35 to 3.5 GPM	5000 psi	62 mm (2.45″)	13,000	0.4 kg (1 lb)
FTB-202	3/4-16 UNF-3A	0.75 to 7.5 GPM	5000 psi	62 mm (2.45″)	10,000	0.4 kg (1 lb)
FTB-203	3/4-16 UNF-3A	1.25 to 9.5 GPM	5000 psi	62 mm (2.45″)	6,000	0.4 kg (1 lb)
FTB-204	7/8-14 UNF-3A	1.75 to 16 GPM	5000 psi	70 mm (2.75″)	4,100	0.4 kg (1 lb)
FTB-205	1-1/16-12 UNF-3A	2.5 to 29 GPM	5000 psi	83 mm (3.25″)	2,200	0.4 kg (1 lb)
FTB-206	1-15/16-12 UNF-3A	4 to 60 GPM	3500 psi	89 mm (3.50″)	640	0.9 kg (2 lb)
FTB-207	1-5/8-12 UNF-3A	6 to 93 GPM	3000 psi	99 mm (3.88″)	410	0.9 kg (2 lb)
FTB-208	1-7/8-12 UNF-3A	8 to 130 GPM	2250 psi	111 mm (4.38″)	230	1.4 kg (3 lb)
FTB-209	2-1/2-12 UNF-3A	15 to 225 GPM	1750 psi	121 mm (4.75″)	120	1.8 kg (4 lb)