The INVALCO high-pressure turbine flow meter (TFM) measures liquid or gas from vacuum to 15,000 psi. Its patented one-piece cartridge carries a rotor on sealed, pre-lubricated ball bearings and a fixed shaft; calibrated replacement cartridges slide out of the female side of the body after removing the union seal and cartridge retainer, with no special tools. The body is 4340 steel (100 ksi minimum yield) with longitudinal and transverse impact requirements at -20 °F, with WECO 1502 union nut, segments and seals standard. Installs vertically or horizontally in any direction.
Key specifications
Pressure rating: 1502 union ends: 15,000 psi (103,000 kPa)
Union ends: 1", 1-1/2" and 2" meters use 2" union ends; 3" uses 3" union ends
Gas ranges / K-factor: 1": 1.1-22 ACFM, 6,200 p/ACF; 1-1/2": 3.0-80 ACFM, 2,500 p/ACF; 2": 4.5-90 ACFM, 1,500 p/ACF
Liquid ranges / K-factor: 1": 4.5-90 GPM, 953 p/gal; 1-1/2": 13-260 GPM, 341 p/gal; 2": 20-400 GPM, 185 p/gal
Linearity / repeatability: +/-1.0% / +/-0.25%
Overrange: 125% of flow range for intermittent periods
Pressure drop: 0.5-0.75 psi at 100% of full range
Output: 100-1,100 Hz; approx. 100 mV @ 100 Hz to 1.5 V RMS @ 1,000 Hz
Temperature: -20 to 250 °F standard; -40 to 250 °F extended option; others on request
Materials: 4340 body; CD4MCu rotor; 316 SS rotor shaft and supports; 316 SS shielded bearings with 440 SS balls and races; 8620 cartridge retainer
Pickup (order separately): Coil 975 Ohm, 400 mH, 10SL-4S connector or leads; optional stainless preamp pickup, 4.5-28 VDC, square-wave NPN output 5 Hz-12 kHz, 10SL-3P connector
How to specify / order
Meter size (1", 1-1/2", 2" or 3") and service (liquid or gas)
Flow range and fluid; operating pressure (to 15,000 psi) and temperature (state if the -40 °F extended range is needed)
End connection (1502 union standard; other end connections and pressures consult factory)
Pickup coil or preamp magnetic pickup, cable and readout electronics (ordered separately)
Spare calibrated cartridge if field exchange is planned
The bulletin has no model code. Bulletin issues to confirm with the factory: the title covers 1"-3" but the gas and liquid capacity tables stop at 2" (no 3" data); the liquid LPM column for 1" (180-3,600) and 1-1/2" (270-5,400) repeats the gas ACFH figures instead of litres per minute; and the pressure-rating line lists 602/1002/1502 classes but only gives the 1502 rating.
Pricing and lead time are quoted per configuration. Send the model code (or your application details), product, flow range, and pressure/temperature to Flow Measurement Services for a quote. Specifications summarized from Smith Meter (INVALCO) bulletin SSIN042 Rev 0.1 (1/19); confirm current data with the factory before ordering.
Smith Meter (formerly FMC Technologies / TechnipFMC Measurement Solutions), now manufactured by Guidant. Flow Measurement Services supplies and services Smith Meter equipment.