Thru View Industrial Flowmeters for 0.54 thru 120 GPM liquids, 3.20 thru 1000 SCFM gases
Typical Flow Applications:
- Cooling water
- Compressed Air
- Nitrogen, oxygen, argon, carbon dioxide and other gas flows
- Light oils
Features & Benefits:
- Tough, simple & accurate meters for water, oils, coolants, compressed gases, lubricants, & other general industrial applications.
- Extended flow ranges averaging 25 to 1.
- Disassembles in less than a minute without removing the meter from the pipeline.
- The knife-edged flow indicator eliminates parallax & is visible in most dirty fluids.
- Brass or T-316 stainless bodies & internals, with polysulfone, glass, or PVC sight tube options.
- Standard 3/4 and 1-1/2 female NPT connections or optional flanges. Pipe adapters may be used for other sizes without affecting accuracy.
- 360° rotation of scale on plastic sight tube models. Special scales for other units or fluids & multiple scaling offered.
- Options include alarms, pressure gage on meter, oxygen cleaning, & panel mounts.
- Economically priced, with standard deliveries of 12 weeks, & 2448 hour express service offered for most models.
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SPECIFICATIONS REPEATABILITY: ±1/4% of indicated flow rate. RANGEABILITY: 25 to 1 average. MATERIALS: Brass or T-316 stainless steel for body and internals; Polysulfone, PVC, or glass for meter sight tube (see “Sight Tube Options” for description). Stainless internals, which tend to be more abrasion resistant, can be supplied in brass bodies for liquids that contain abrasive particles. SCALES: Standard direct reading (GPM or LPM Liquid, Sp. Gr. = 1.00 or SCFM Dry Air @100 psig, 70°F.) or percentage scale. Scales are photo-etched, anodized aluminum. Special scales for other flow units or media conditions, or mylar scales for corrosive environments, are available at extra cost. Liquid meter scales for LPM Liquid, Sp. Gr. = 1.00, are stocked. Scale length is approximately 3.2 for Size 6 meters, 5.2 on Size 12 units. OPERATING LIMITS: Please Download Full Specifications. “O” RINGS: Buna N standard; Viton, Ethylene-Propylene (EPR), Silicone, Neoprene, and Teflon optional. OPTIONS: Flanged connections, Flo-Sentry Alarms, panel mount kits, pressure gages installed on the meter, special or multiple scaling, & safety devices available. Custom options such as viscosity calibrations are by quotation only. |
SIGHT TUBE OPTIONS: PVC: Transparent, molded PVC sight tube with same chemical resistance as standard Type 1, Grade 1 PVC. Resistant to many acids, alkalis, salt solutions, and other corrosives. Attacked by nonpolar solvents including some chlorinated hydrocarbons, and aromatics. Maximum temperature 140°F. BOROSILICATE GLASS: Satisfactory for most acids, hot solutions (to 240°F.) below pH-12, and strong alkalis (to 20%) up to 100°F. Not recommended for water above 200°F., steam, fluorine, or hydrofluoric acid. Temperatures to 400°F. acceptable with non-attacking fluids. Glass sight tubes are permanently bonded in a steel sleeve for mounting to the meter body, and safety shielding and a Safety Buffer (a resilient cushion of PVC or Teflon mounted inside the top of the glass tube) are strongly recommended. HIGH PRESSURE MODELS: Incorporate additional reinforcing at the body/sight tube gland. Safety shielding, such as MEMFlo's Safety Guard Tube, is strongly recommended with all high pressure models. |
DIRTY FLUIDS
Unlike tapered tube rotameters, Thru View Flowmeters have a sharp-edged float indicator disk that is always within a few thousandths of an inch of the cylindrical sight tube wall. Because of this near proximity, the edge of the disk remains visible regardless of flow rate even in many dirty fluids.
As a rule, the indicator disk is visible in most thinner oils and light colored liquids. Visibility in black, viscous liquids is unlikely. MEMFlo All Metal Flowmeters can be used for these liquids.
Selecting MEMFlo “Thru View” Flowmeters
To choose a MEMFlo “Thru View” Flowmeter, please use the Sizing Calculators to obtain the correct equivalent flow. Find either the closest or next larger flow (whichever you prefer) in the “Designator & 100% Flow Column” of the Capacity Tables. Please review the Operating Limits in Table 5 to chose a model style rated for your service conditions. To build the proper model number, please see Page 6. When ordering or requesting a quotation, please specify:
- The Fluid Name
- Density or Specific Gravity
- Operating & Maximum Pressures & Temperatures
- Flow Rate (normal, minimum & maximum)
- Desired Accessories or Options (alarms, panel mounts, pressure gages, etc.)
- Special or Unusual Considerations (viscosity, environmental factors, etc.)
