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Direct Read Rotameters

FLD Series

Direct Read Rotameters

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^$ 95.00 FLDA3220ST

•	Direct Read Rotameters for Air, Water, N₂, H₂, CO₂, Ar, He, and O₂
•	Rib-Guided or Fluted Metering Tubes Facilitate Stable, Accurate Readings
•	Magnifier Lens in Front Shields to Enhance Reading Resolution
•	Interchangeability of Flow Tubes and Floats
•	Ease of Installation and Exchange of Flow Tube
•	Simple Means of Panel Mounting
View related products - Variable Area Flowmeters and Rotameters

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)
Calibrated Accuracy: ±1% 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, 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 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: ¹⁄₈NPT female inlet and outlet connections

To Order (Specify Model Number)

Part Number	Availability	Price	Description	RoHS	Qty.


Aluminum Frames


65mm Water Flow Maximum Flow Rates, Minimum is 10% of Maximum

FLDW3207ST		$95.00	60 mL/min		qty.
FLDW3209ST		$95.00	150 mL/min		qty.
FLDW3211G		$105.00	500 mL/min		qty.

65mm Air Flow Maximum Flow Rates, Minimum is 10% of Maximum

FLDA3201C		$95.00	2.2 scfh		qty.
FLDA3203ST		$95.00	10 scfh		qty.
FLDA3206ST		$95.00	50 scfh		qty.
FLDA3210G		$95.00	1 L/min		qty.
FLDA3211G		$95.00	1.15 L/min		qty.
FLDA3212ST		$95.00	2 L/min		qty.
FLDA3213ST		$95.00	4 L/min		qty.
FLDA3215ST		$95.00	10 L/min		qty.
FLDA3216ST		$105.00	16 L/min		qty.
FLDA3217ST		$95.00	25 L/min		qty.
FLDA3220ST		$95.00	50 mL/min		qty.
FLDA3222G		$95.00	100 mL/min		qty.
FLDA3224C		$95.00	250 mL/min		qty.
FLDA3225C		$95.00	500 mL/min		qty.
FLDA3226G		$95.00	1000 mL/min		qty.

150mm Water Flow Maximum Flow Rates, Minimum is 10% of Maximum

FLDW3401C		$149.00	29 gph		qty.
FLDW3404ST		$149.00	1.2 L/min		qty.
FLDW3405T		$186.00	2 L/min		qty.
FLDW3406S		$139.00	1 mL/min		qty.
FLDW3409G		$139.00	50 mL/min		qty.
FLDW3412C		$139.00	237 200 mL/min		qty.
FLDW3413ST		$139.00	237 500 mL/min		qty.

150mm Air Flow Maximum Flow Rates, Minimum is 10% of Maximum

FLDA3401C		$139.00	2.5 scfh		qty.
FLDA3405ST		$139.00	16.5 scfh		qty.
FLDA3407G		$149.00	55 scfh		qty.
FLDA3410S		$154.00	1 scfm		qty.
FLDA3411ST		$149.00	1.5 scfm		qty.
FLDA3412C		$139.00	1.3 L/min		qty.
FLDA3414G		$139.00	2.5 L/min		qty.
FLDA3418S		$139.00	5 L/min		qty.
FLDA3419G		$139.00	10 L/min		qty.
FLDA3420C		$139.00	10 L/min		qty.
FLDA3421ST		$139.00	17 L/min		qty.
FLDA3422G		$149.00	23 L/min		qty.
FLDA3425S		$139.00	25 mL/min		qty.
FLDA3428ST		$139.00	100 mL/min		qty.
FLDA3429C		$139.00	100 mL/min		qty.
FLDA3430ST		$139.00	150 mL/min		qty.
FLDA3432G		$139.00	300 mL/min		qty.
FLDA3433S		$139.00	500 mL/min		qty.

Stainless Steel Frames


150mm Air Flow Maximum Flow Rates, Minimum is 10% of Maximum

FLDA3501C		$237.00	2.5 scfh		qty.
FLDA3511ST		$247.00	1.5 scfm		qty.
FLDA3512C		$237.00	1.3 l/pm		qty.
FLDA3513ST		$237.00	1.8 l/min		qty.
FLDA3515G		$237.00	4 l/min		qty.
FLDA3518S		$237.00	5 l/min		qty.
FLDA3521ST		$237.00	17 l/min		qty.
FLDA3522G		$247.00	23 l/min		qty.
FLDA3531ST		$237.00	200 ml/min		qty.
FLDA3533S		$237.00	500 ml/min		qty.

65mm Water Flow Maximum Flow Rates, Minimum is 10% of Maximum

FLDW3306G		$190.00	25 mL/min		qty.
FLDW3308ST		$190.00	115 mL/min		qty.
FLDW3310G		$200.00	250 mL/min		qty.
FLDW3311G		$200.00	500 mL/min		qty.

150mm Water Flow Maximum Flow Rates, Minimum is 10% of Maximum

FLDW3506S		$237.00	1 mL/min		qty.
FLDW3510G		$237.00	60 mL/min		qty.
FLDW3513ST		$237.00	500 mL/min		qty.

65mm Air Flow Maximum Flow Rates, Minimum is 10% of Maximum

FLDA3302G		$190.00	6 scfh		qty.
FLDA3303ST		$190.00	10 scfh		qty.
FLDA3304ST		$190.00	18 scfh		qty.
FLDA3305ST		$190.00	25 scfh		qty.
FLDA3306ST		$190.00	50 scfh		qty.
FLDA3308C		$200.00	150 scfh		qty.
FLDA3310G		$190.00	1 L/min		qty.
FLDA3312ST		$190.00	2 L/min		qty.
FLDA3313ST		$190.00	4 L/min		qty.
FLDA3314G		$190.00	5 L/min		qty.
FLDA3315ST		$190.00	10 L/min		qty.
FLDA3317ST		$190.00	25 L/min		qty.
FLDA3318ST		$200.00	40 L/min		qty.
FLDA3322G		$190.00	100 mL/min		qty.
FLDA3324C		$190.00	250 mL/min		qty.
FLDA3325C		$190.00	500 mL/min		qty.

65mm Argon Flow Maximum Flow Rates, Minimum is 10% of Maximum

FLDAR3302ST		$190.00	10 scfh		qty.
FLDAR3303ST		$190.00	22 scfh		qty.
FLDAR3304G		$200.00	50 scfh		qty.
FLDAR3305S		$190.00	1000 mL/min		qty.

150mm Argon Flow Maximum Flow Rates, Minimum is 10% of Maximum

FLDAR3504C		$237.00	325 mL/min		qty.
FLDAR3505G		$237.00	33 mL/min		qty.

65mm Carbon Dioxide Flow Maximum Flow Rates, Minimum is 10% of Maximum

FLDC3301G		$190.00	1 L/min		qty.
FLDC3303ST		$190.00	10 L/min		qty.
FLDC3304ST		$200.00	35 L/min		qty.
FLDC3306G		$190.00	55 mL/min		qty.
FLDC3307S		$190.00	200 mL/min		qty.

150mm Carbon Dioxide Flow Maximum Flow Rates, Minimum is 10% of Maximum

FLDC3501G		$237.00	100 mL/min		qty.
FLDC3503S		$252.00	10 L/min		qty.

65mm Helium Flow Maximum Flow Rates, Minimum is 10% of Maximum

FLDHE3301S		$190.00	65 mL/min		qty.
FLDHE3302G		$190.00	120 mL/min		qty.

150mm Helium Flow Maximum Flow Rates, Minimum is 10% of Maximum

FLDHE3502C		$237.00	5 L/min		qty.
FLDHE3503ST		$237.00	40 L/min		qty.
FLDHE3504G		$237.00	100 mL/min		qty.
FLDHE3505C		$237.00	500 mL/min		qty.
FLDHE3506G		$237.00	1500 mL/min		qty.

65mm Hydrogen Flow Maximum Flow Rates, Minimum is 10% of Maximum

FLDH3301C		$190.00	1.5 L/min		qty.
FLDH3302G		$190.00	3.5 L/min		qty.
FLDH3303G		$190.00	6 L/min		qty.
FLDH3305G		$190.00	35 mL/min		qty.
FLDH3306ST		$190.00	100 mL/min		qty.
FLDH3307S		$190.00	150 mL/min		qty.

150mm Hydrogen Flow Maximum Flow Rates, Minimum is 10% of Maximum

FLDH3501S		$252.00	225 scfh		qty.
FLDH3502G		$237.00	100 mL/min		qty.

65mm Nitrogen Flow Maximum Flow Rates, Minimum is 10% of Maximum

FLDN3301ST		$190.00	12 L/min		qty.
FLDN3302G		$190.00	6 mL/min		qty.
FLDN3303ST		$190.00	50 mL/min		qty.
FLDN3305G		$190.00	120 mL/min		qty.

150mm Nitrogen Flow Maximum Flow Rates, Minimum is 10% of Maximum

FLDN3501ST		$247.00	1.6 scfm		qty.
FLDN3502G		$237.00	2 L/min		qty.
FLDN3503G		$237.00	100 mL/min		qty.
FLDN3505C		$237.00	300 mL/min		qty.
FLDN3506S		$237.00	500 mL/min		qty.

65mm Oxygen Flow Maximum Flow Rates, Minimum is 10% of Maximum

FLDO3301G		$190.00	1 L/min		qty.
FLDO3302ST		$190.00	4 L/min		qty.
FLDO3303ST		$190.00	8 L/min		qty.
FLDO3306ST		$190.00	300 mL/min		qty.
FLDO3307ST		$190.00	500 mL/min		qty.

150mm Oxygen Flow Maximum Flow Rates, Minimum is 10% of Maximum

FLDO3501S		$237.00	1 L/min		qty.
FLDO3503C		$237.00	10 L/min		qty.
FLDO3504ST		$237.00	16.50 L/min		qty.
FLDO3505C		$237.00	58 L/min		qty.

Accessories

FLTR-1		$48.00	Tripod for one rotameter		qty.
FLTR-3		$48.00	Tripod for three rotameters		qty.

† All dollar amounts on this site are shown in US currency.

Note: “G” suffix denotes glass float, “ST” suffix denotes 316SS float, “C” suffix denotes carboloy float and “S” denotes sapphire float. For units without valve, add suffix “-NV” to model number and subtract $10 for aluminum; subtract $13 for for 316SS. 1. Minimum flow rate is 10% of the maximum rate shown. 2. For 16 turn, high resolution non-rising stem valve for 150 mm rotameters, add suffix “-HRV” to model number and add $50 for aluminum units and $100 for stainless steel units.
(OPTIONS SHOWN IN THIS "NOTE" ABOVE ARE PRICED IN US$)
Ordering Example: (1) FLDN3501ST 6 turn valve stainless steel unit, with 316SS float, range of 1.6 scfm nitrogen = $247.00

Keywords.:rotameter, variable area flowmeter, flow meter, air flowmeter, water flowmeter, nitrogen flowmeter, argon flowmeter, tube and float, direct read flowmeter, direct read rotameter, flow measurement