LN series
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MAX FLOW SIZES FROM 80 TO 500 GPM (300 TO 1800 LPM) MAX LIQUID PRESSURE 300 PSI (20.69 BAR) MAX LIQUID PRESSURE 1000 PSI (68.97 BAR) Flow meters, Flow switches and Flow transmitters A Large Vane Style For Liquids CSA Certified NRTL/C CE Marked (as noted) NIST Traceable Calibration Certificate Available DESCRIPTION These variable-area flow meters have a spring-loaded swinging vane. Mounting is in-line and in any position. Straight pipe runs, before or after the meter, are not required. The all-mechanical sensing system directly drives the pointer, switches and transmitters. This swinging vane can be manually operated with a wrench (factory supplied) to verify or adjust switch points or to free the vane should it become lodged by debris in the fluid. READOUTS The flowmeter has outputs both visual and electronic. Visual displays are either pointer (with inscribed scale) or numeric. Signal outputs can be mechanical switch closure, 4-20 mA analog or both (for signal redundancy). The switches can be general purpose or rated for hazardous locations (all classes, groups and divisions). The 4-20 mA transmitters are Intrinsically Safe if used with approved barriers. CALIBRATION All flow meters are individually calibrated for fluids with the viscosity you specify (up to 3000 SSU/660 Centistokes). We also compensate for your fluid’s specific gravity. For NIST Traceability please consult factory. CONSTRUCTION MATERIALS The meter body, internal moving parts, and seals are offered in a variety of materials to suit a wide range of applications: water, synthetic and petroleum based oils, paint, some corrosives, solvents, air and gases. See selections in the “How to Order” section. LINE CONNECTION Ports can be from 1-1/2 to 4 inches. All connections and types are specified in the “How to order” section. Fluid enters at A, passes around the semi-circular vane B, exits at outlet C. The vane resists the flow because of the spring D. The further the vane is pushed the larger the passageway E becomes. This minimizes pressure drop. The vane shaft turns to operate the pointer F and remote signal devices such as the switch G. Viton® and Kalrez™ are registered trademark for DuPont Performance Elastomers. LN Series

Select appropriate symbols and build a model code number, as in example shown: EXAMPLE: SERIES BY PRESSURE RATING Normal pressure (300 PSI) High pressure (1000 PSI) HOUSING MATERIAL Aluminum Aluminum (hard coated) Brass Cast iron Cast iron, nickel plated Aluminum with brass center section Carbon steel Stainless steel (316) Carbon steel, nickel plated WHERE USED Lube oil Lube oil with exterior corrosion protection Water Oil Water, oil with exterior corrosion protection Water Oil Chemicals, corrosives Water, oil with exterior corrosion protection INTERNAL MOVING PARTS Stainless steel (300...

SERVICE Weatherproof (Type 4) Available on all boxes = W Weatherproof, corrosion proof (Type 4X) Available on all boxes = X FLOW DIRECTION Left to right = R Right to left = L Up = U Down = D SPECIAL OPTIONS High-temp- 400°F for A & R Box, 300°F for transmitter options Stainless steel ID tag for customer supplied information Pin connector (See explanation for special options.) CSA enclosure / PVC window Tempered glass window Dual spring (for higher flows) SWITCH SETTING No symbol = Lowest possible setting (usually 10% of maximum flow) Desired set point is assumed to be in flow units already...

CONTROL BOX SELECTION GUIDE Standard Offering: Control Box “R” “R” box is selected for greater resolution (more increments on the inscribed scale). It holds switches (general purpose and hazardous location all classes groups and divisions) and 4-20mA transmitter. Switch (standard service) and transmitter are offered in this control box together when signal redundancy is desired. You get this control box when you order any CONTROL BOX & READOUT starting with an “R” (see "How to Order" page). Examples: R1WR is a one switch, weatherproof box with flow from left to right. This control box is...

SPECIAL OPTIONS High temperature: (option HT) requires seals of Viton®, EPR, Kalrez™ or Teflon (compatible with fluid). A thermal barrier (heat-resistant cloth) is added between the housing and the control box, which must be used with service option "W" (weatherproof) or "X" (corrosion resistant). A metal scale is provided. Multi-pin connector: Pin conCE marked switches: (option CE) nectors (option PC) are available SPDT 3-wire switch for general for rapid field installation. Meters purpose use. Standard on switches are provided with the male half of 1, 1B, 2 and 2B, optional on 3, 4, 61,...