The INVALCO Model WCM 7300M is an inline, temperature-compensated water cut monitor for the water content of crude oil, condensate and other low-dielectric liquids, from a maximum of 25% down to 1,000 ppm. Digital signal processing and full product temperature compensation correct for the shift in the oil's base dielectric constant with temperature (a typical crude can read about 0.1% high or low for a 10 °F change), giving a true water or S&W cut from 25 to 160 °F. A supplied magnet operates an internal reed switch to page between water cut, process temperature and probe value without opening the condulet.
Key specifications
Full-scale range: 0-25% S&W
Normal variance vs. grind-out: +/- 0.05 (0-5% water), +/- 0.1 (5-10%), +/- 0.15 (10-15%), +/- 0.2 to 0.25 (15-25%)
Power: 20-30 VDC +/-10%, 100 mA max
Outputs: 4-20 mA and 0-5 V for remote readout; relay closure for LACT divert
Display: One-line 16-character LCD (water cut, temperature, probe value); red/green LED for good oil / bad oil / bypass
Approvals: UL Class I Div 1 Groups C & D
Probe sizes and weights: 2" (17" face-to-face, 20 lb); 3" (32", 45 lb); 4" (72 lb); 6" (127 lb); 8" (190 lb); 10" (268 lb); 12" and up consult factory
Applications: LACT units (relay closure to divert high-water oil), pipeline loading, dehydration equipment, fuel oil monitoring, storage and treating (including tank dewatering interface detection)
How to read the model code
Example: WCM 7300M - 460 - BFP = 4" probe, 600# RF, standard carbon steel, flanged, epoxy.
Probe body size: 2 = 2" ID x 17" F-F; 3 = 3" ID x 32"; 4, 6, 8 = 4"/6"/8" ID x 32" (screwed and grooved ends to 3" only)
End connection (2 digits): 00 = screwed, grooved/Victaulic or 150# ANSI RF (all printed as 00); 30 = 300# RF; 60 = 600# RF (SCH 80); 90 = 900# RF; 05 = 150# RTJ; 35 = 300# RTJ; 65 = 600# RTJ (SCH 80); 95 = 900# RTJ (SCH 80); 115 = 1500# RTJ
Material / temperature: B = A53B carbon steel, 0-160 °F; H = carbon steel high temperature, 0-375 °F; S = 316 SS, 0-160 °F; T = 316 SS high temperature, 0-375 °F
Connection style: S = screwed MNPT; G = Victaulic grooved; F = flanged
Last position (labeled "Open"): P = epoxy
Bulletin errors to note: the modeling-code header says "0-20% water" while the text and specifications say 0-25%; the code "00" is printed for three different end connections (screwed, grooved and 150# RF); the worked example is printed as "WCM 730 - 460 - BFP" (dropping "0M"); the model code lists probe sizes only to 8" although the dimension table includes 10"; and the last code group is headed "Open" with only P = epoxy. FMS confirms the full code with the factory at quote.
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 SSIN016 Rev 0.2 (1/23); 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.