Designed for direct read flow rates, the FLD Series rotameter is a precision instrument embodying the inherent simplicity, versatility and economy of the classical rotameter. It is particularly suitable for metering carrier gases in chromatography, indicating and controlling gases in manufacturing processes, liquid and gas measurement in laboratories, pilot plants, flow and level indicating, etc. Shipped completely assembled, flow meters include standard mounting fittings in a choice of materials, side plates, thick protective magnifying front shield and back plate, built-in control valve, and flow tubes. Panel-mounting style is convertible to bench mounting through the use of the optional acrylic tripod, FLTR-1. The tripod has a built-in spirit leveler and leveling screws.
Meters come with built-in 6 turn needle valves, high precision metering valves with “non-rising stems” 16 turn, or with no valves. The higher cost of the high resolution valves is justified whenever high sensitivity control and resolution are desirable-particularly in conjunction with metering tubes of very low flow rates. Generally, for gas metering it is recommended that valves are positioned at inlets (bottom) for liquids valves may be positioned either at inlets or outlets (top). For vacuum services, valves must be mounted at outlets. If unspecified at the time of ordering, meters will be shipped with valves mounted at the inlets.
SPECIFICATIONS Standard Accuracy: ±5% of full scale (FS) Repeatability: ±0.25% Useful Flow Range: 10:1 minimum Maximum Operating Pressure: 200 psig/13.8 bars Maximum Operating Temperature: 121°C (250°F)
Construction Flow Tubes: Heavy walled borosilicate glass Floats: Glass, red sapphire, 316 stainless steel, carboloy and tantalum Choice of Mounting Fittings in Contact with Fluids: Aluminum, black anodized or 316 stainless steel Side-Panels: Aluminum, black anodized Front Shield: Polycarbonate resin with longitudinal magnifier lens for enhanced reading resolution Back Plate: 1/8' thick white acrylics O-Rings and Packing: Buna O-rings in aluminum/brass model. FKM O-rings in stainless steel meters Optional: Perfluoroelastomer and EPR Connections: 1/8 NPT female inlet and outlet connections