Direct Read Variable Area Flow Meters

FLD Series

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^USD$4,895.00 FLDA3220ST

•	Direct Read Variable Area Flow Meters 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 Mounting
View related products - Variable Area Flow Meters & Switches

Designed for direct read flow rates, the FLD Series variable area flow meter is a precision instrument embodying the inherent simplicity, versatility and economy of the classical variable area flow meter. 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

To Order

(Specify Model Number)

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Part Number	Availability	Price	Description	RoHS	Qty.

ALUMINUM FRAMES

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

FLDW3201S	4 Weeks	5,535.00	1 L/min		qty.

FLDW3202ST	4 Weeks	5,335.00	1.2 L/min		qty.

FLDW3203ST	4 Weeks	4,895.00	3 L/hr		qty.

FLDW3204G	4 Weeks	4,895.00	0.5 mL/min		qty.

FLDW3205ST	4 Weeks	4,895.00	6 mL/min		qty.

FLDW3206G	4 Weeks	4,895.00	25 mL/min		qty.

FLDW3207ST	4 Weeks	4,895.00	60 mL/min		qty.

FLDW3208ST	4 Weeks	4,895.00	115 mL/min		qty.

FLDW3209ST	4 Weeks	4,635.00	150 mL/min		qty.

FLDW3210G	4 Weeks	5,335.00	250 mL/min		qty.

FLDW3211G	4 Weeks	5,495.00	500 mL/min		qty.

FLDW3212ST	4 Weeks	5,165.00	750 mL/min		qty.

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

FLDA3201C	4 Weeks	4,895.00	2.2 scfh		qty.

FLDA3202G	4 Weeks	4,895.00	6 scfh		qty.

FLDA3203ST	4 Weeks	4,895.00	10 scfh		qty.

FLDA3204ST	4 Weeks	4,895.00	18 scfh		qty.

FLDA3205ST	4 Weeks	4,635.00	25 scfh		qty.

FLDA3206ST	4 Weeks	4,895.00	50 scfh		qty.

FLDA3207ST	4 Weeks	5,335.00	90 scfh		qty.

FLDA3208C		5,335.00	150 scfh		qty.

FLDA3209C	4 Weeks	5,335.00	0.6 scfm		qty.

FLDA3210G	4 Weeks	4,635.00	1 L/min		qty.

FLDA3211G	4 Weeks	5,000.00	1.15 L/min		qty.

FLDA3212ST	4 Weeks	4,895.00	2 L/min		qty.

FLDA3213ST	4 Weeks	4,895.00	4 L/min		qty.

FLDA3214G	4 Weeks	4,635.00	5 L/min		qty.

FLDA3215ST	4 Weeks	4,895.00	10 L/min		qty.

FLDA3216ST	4 Weeks	5,335.00	16 L/min		qty.

FLDA3217ST	4 Weeks	4,635.00	25 L/min		qty.

FLDA3218ST		5,050.00	40 L/min		qty.

FLDA3219G		4,895.00	7 mL/min		qty.

FLDA3220ST		4,895.00	50 mL/min		qty.

FLDA3221ST		4,635.00	75 mL/min		qty.

FLDA3222G		4,635.00	100 mL/min		qty.

FLDA3223ST	2 Weeks	4,895.00	130 mL/min		qty.

FLDA3224C	4 Weeks	4,635.00	250 mL/min		qty.

FLDA3225C		4,895.00	500 mL/min		qty.

FLDA3226G	4 Weeks	4,895.00	1000 mL/min		qty.

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

FLDW3401C	4 Weeks	7,580.00	29 gph		qty.

FLDW3402S	4 Weeks	7,780.00	0.22 gpm		qty.

FLDW3403C	4 Weeks	7,580.00	0.45 gpm		qty.

FLDW3404ST	4 Weeks	7,580.00	1.2 L/min		qty.

FLDW3405T	4 Weeks	7,780.00	2 L/min		qty.

FLDW3406S	4 Weeks	7,100.00	1 mL/min		qty.

FLDW3407S	4 Weeks	7,100.00	10 mL/min		qty.

FLDW3408ST	4 Weeks	7,100.00	20 mL/min		qty.

FLDW3409G	4 Weeks	7,100.00	50 mL/min		qty.

FLDW3410G	4 Weeks	7,100.00	60 mL/min		qty.

FLDW3411G	4 Weeks	7,100.00	100 mL/min		qty.

FLDW3412C	4 Weeks	7,100.00	237 200 mL/min		qty.

FLDW3413ST	4 Weeks	7,100.00	237 500 mL/min		qty.

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

FLDA3401C	4 Weeks	7,100.00	2.5 scfh		qty.

FLDA3402G	4 Weeks	7,100.00	5 scfh		qty.

FLDA3403G	4 Weeks	7,100.00	8.25 scfh		qty.

FLDA3404ST	4 Weeks	7,100.00	10 scfh		qty.

FLDA3405ST	4 Weeks	7,100.00	16.5 scfh		qty.

FLDA3406C	4 Weeks	7,100.00	23 scfh		qty.

FLDA3407G	4 Weeks	7,580.00	55 scfh		qty.

FLDA3408ST	4 Weeks	7,580.00	90 scfh		qty.

FLDA3409ST	4 Weeks	7,580.00	94 scfh		qty.

FLDA3410S	4 Weeks	7,780.00	1 scfm		qty.

FLDA3411ST	4 Weeks	7,580.00	1.5 scfm		qty.

FLDA3412C	4 Weeks	7,100.00	1.25 L/min		qty.

FLDA3413ST	4 Weeks	7,100.00	1.8 L/min		qty.

FLDA3414G	4 Weeks	6,720.00	2.5 L/min		qty.

FLDA3415G	4 Weeks	7,100.00	4 L/min		qty.

FLDA3416S	4 Weeks	7,100.00	4.5 L/min		qty.

FLDA3417ST	4 Weeks	7,100.00	4.8 L/min		qty.

FLDA3418S	4 Weeks	7,100.00	5 L/min		qty.

FLDA3420C	4 Weeks	7,100.00	10 L/min		qty.

FLDA3421ST	4 Weeks	7,100.00	17 L/min		qty.

FLDA3422G	4 Weeks	7,580.00	23 L/min		qty.

FLDA3425S	4 Weeks	6,720.00	25 mL/min		qty.

FLDA3423ST	4 Weeks	8,000.00	42 L/min		qty.

FLDA3426S	4 Weeks	6,720.00	52 mL/min		qty.

FLDA3424C	4 Weeks	7,580.00	60 L/min		qty.

FLDA3427C	4 Weeks	7,100.00	75 mL/min		qty.

FLDA3428ST	4 Weeks	7,100.00	100 mL/min		qty.

FLDA3429C		Consult sales	100 mL/min		qty.

FLDA3430ST	4 Weeks	7,100.00	150 mL/min		qty.

FLDA3431ST	4 Weeks	7,100.00	200 mL/min		qty.

FLDA3432G	4 Weeks	7,100.00	300 mL/min		qty.

FLDA3433S	4 Weeks	7,100.00	500 mL/min		qty.

FLDA3434G	4 Weeks	7,100.00	800 mL/min		qty.

STAINLESS STEEL FRAMES

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

FLDW3301S	4 Weeks	10,425.00	1 L/min		qty.

FLDW3302ST	4 Weeks	10,225.00	1.2 L/min		qty.

FLDW3303ST	4 Weeks	9,785.00	3 L/hr		qty.

FLDW3304G	4 Weeks	9,785.00	0.5 mL/min		qty.

FLDW3305ST	4 Weeks	9,785.00	6 mL/min		qty.

FLDW3306G	4 Weeks	9,785.00	25 mL/min		qty.

FLDW3307ST	4 Weeks	9,785.00	60 mL/min		qty.

FLDW3308ST	4 Weeks	9,785.00	115 mL/min		qty.

FLDW3309ST	4 Weeks	9,785.00	150 mL/min		qty.

FLDW3310G	4 Weeks	10,225.00	250 mL/min		qty.

FLDW3311G	4 Weeks	10,225.00	500 mL/min		qty.

FLDW3312ST	4 Weeks	9,785.00	750 mL/min		qty.

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

FLDA3301C	4 Weeks	9,785.00	2.2 scfh		qty.

FLDA3302G	4 Weeks	9,785.00	6 scfh		qty.

FLDA3303ST	4 Weeks	9,785.00	10 scfh		qty.

FLDA3304ST	4 Weeks	9,785.00	18 scfh		qty.

FLDA3305ST	4 Weeks	10,325.00	25 scfh		qty.

FLDA3306ST	4 Weeks	9,785.00	50 scfh		qty.

FLDA3307ST	4 Weeks	10,225.00	90 scfh		qty.

FLDA3308C	4 Weeks	10,225.00	150 scfh		qty.

FLDA3309C	4 Weeks	9,785.00	0.6 scfm		qty.

FLDA3310G	4 Weeks	9,785.00	1 L/min		qty.

FLDA3311G	4 Weeks	9,785.00	1.15 L/min		qty.

FLDA3312ST	4 Weeks	9,785.00	2 L/min		qty.

FLDA3313ST	4 Weeks	9,785.00	4 L/min		qty.

FLDA3314G	4 Weeks	9,785.00	5 L/min		qty.

FLDA3315ST	4 Weeks	9,785.00	10 L/min		qty.

FLDA3316ST	4 Weeks	10,790.00	16 L/min		qty.

FLDA3317ST	4 Weeks	9,785.00	25 L/min		qty.

FLDA3318ST	4 Weeks	10,225.00	40 L/min		qty.

FLDA3319G	4 Weeks	9,785.00	7 mL/min		qty.

FLDA3320ST	4 Weeks	9,785.00	50 mL/min		qty.

FLDA3321ST	4 Weeks	9,785.00	75 mL/min		qty.

FLDA3322G	4 Weeks	9,785.00	100 mL/min		qty.

FLDA3323ST	4 Weeks	9,785.00	130 mL/min		qty.

FLDA3324C	4 Weeks	9,785.00	250 mL/min		qty.

FLDA3325C	4 Weeks	9,785.00	500 mL/min		qty.

FLDA3326G	4 Weeks	9,785.00	1000 mL/min		qty.

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

FLDW3501C	4 Weeks	12,630.00	29 gph		qty.

FLDW3502S	4 Weeks	13,035.00	0.22 gpm		qty.

FLDW3503C	4 Weeks	11,955.00	0.45 gpm		qty.

FLDW3504ST		12,630.00	1.2 L/min		qty.

FLDW3505T	4 Weeks	13,035.00	2 L/min		qty.

FLDW3506S	4 Weeks	12,630.00	1 mL/min		qty.

FLDW3507S	4 Weeks	12,630.00	10 mL/min		qty.

FLDW3508ST	4 Weeks	12,630.00	20 mL/min		qty.

FLDW3509G	4 Weeks	12,630.00	50 mL/min		qty.

FLDW3510G	4 Weeks	12,630.00	60 mL/min		qty.

FLDW3511G	4 Weeks	12,630.00	100 mL/min		qty.

FLDW3512C	4 Weeks	12,630.00	200 mL/min		qty.

FLDW3513ST	4 Weeks	12,630.00	500 mL/min		qty.

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

FLDA3501C	4 Weeks	12,630.00	2.5 scfh		qty.

FLDA3502G	4 Weeks	12,630.00	5 scfh		qty.

FLDA3503G	4 Weeks	12,630.00	8.25 scfh		qty.

FLDA3504ST	4 Weeks	12,630.00	10 scfh		qty.

FLDA3505ST	4 Weeks	12,630.00	16.5 scfh		qty.

FLDA3506C	4 Weeks	12,630.00	23 scfh		qty.

FLDA3507G	4 Weeks	13,035.00	55 scfh		qty.

FLDA3508ST	4 Weeks	13,035.00	90 scfh		qty.

FLDA3509ST	4 Weeks	13,035.00	94 scfh		qty.

FLDA3510S	4 Weeks	13,235.00	1 scfm		qty.

FLDA3511ST	4 Weeks	13,035.00	1.5 scfm		qty.

FLDA3512C	4 Weeks	12,630.00	1.25 L/min		qty.

FLDA3513ST	4 Weeks	12,630.00	1.8 L/min		qty.

FLDA3514G	4 Weeks	12,630.00	2.5 L/min		qty.

FLDA3515G	4 Weeks	12,630.00	4 L/min		qty.

FLDA3516S	4 Weeks	12,630.00	4.5 L/min		qty.

FLDA3517ST	4 Weeks	12,630.00	4.8 L/min		qty.

FLDA3518S	4 Weeks	12,630.00	5 L/min		qty.

FLDA3519G	4 Weeks	12,630.00	10 L/min		qty.

FLDA3520C	4 Weeks	12,630.00	10 L/min		qty.

FLDA3521ST	4 Weeks	12,630.00	17 L/min		qty.

FLDA3522G	4 Weeks	13,035.00	23 L/min		qty.

FLDA3525S	4 Weeks	12,630.00	25 mL/min		qty.

FLDA3523ST	4 Weeks	13,035.00	42 L/min		qty.

FLDA3526S	4 Weeks	12,630.00	52 mL/min		qty.

FLDA3524C	4 Weeks	13,035.00	60 L/min		qty.

FLDA3527C	4 Weeks	13,325.00	75 mL/min		qty.

FLDA3528ST	4 Weeks	13,325.00	100 mL/min		qty.

FLDA3529C		Consult sales	100 mL/min		qty.

FLDA3530ST	4 Weeks	12,630.00	150 mL/min		qty.

FLDA3531ST	4 Weeks	13,035.00	200 mL/min		qty.

FLDA3532G	4 Weeks	12,630.00	300 mL/min		qty.

FLDA3533S	4 Weeks	12,630.00	500 mL/min		qty.

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

FLDAR3301G	4 Weeks	9,785.00	2.5 scfh		qty.

FLDAR3302ST		9,785.00	10 scfh		qty.

FLDAR3303ST	4 Weeks	9,785.00	22 scfh		qty.

FLDAR3304G	4 Weeks	10,225.00	50 scfh		qty.

FLDAR3305S	4 Weeks	9,785.00	1000 mL/min		qty.

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

FLDAR3501C	4 Weeks	12,630.00	2 L/min		qty.

FLDAR3502ST	4 Weeks	12,720.00	15 L/min		qty.

FLDAR3503S	4 Weeks	13,235.00	25 L/min		qty.

FLDAR3504C	4 Weeks	12,630.00	325 mL/min		qty.

FLDAR3505G	4 Weeks	12,630.00	33 mL/min		qty.

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

FLDC3301G	4 Weeks	9,785.00	1 L/min		qty.

FLDC3302G	4 Weeks	9,785.00	6 L/min		qty.

FLDC3303ST	4 Weeks	9,785.00	10 L/min		qty.

FLDC3304ST	4 Weeks	10,225.00	35 L/min		qty.

FLDC3305ST	4 Weeks	9,785.00	20 mL/min		qty.

FLDC3306G	4 Weeks	9,785.00	55 mL/min		qty.

FLDC3307S		9,785.00	200 mL/min		qty.

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

FLDC3501G	4 Weeks	12,630.00	100 mL/min		qty.

FLDC3502ST	4 Weeks	13,035.00	300 mL/min		qty.

FLDC3503S	4 Weeks	13,235.00	10 L/min		qty.

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

FLDHE3301S	4 Weeks	9,785.00	65 mL/min		qty.

FLDHE3302G	4 Weeks	9,785.00	120 mL/min		qty.

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

FLDHE3501S		Consult sales	1.25 scfh		qty.

FLDHE3502C	4 Weeks	12,630.00	5 L/min		qty.

FLDHE3503ST	4 Weeks	12,630.00	40 L/min		qty.

FLDHE3504G	4 Weeks	12,630.00	100 mL/min		qty.

FLDHE3505C		12,630.00	500 mL/min		qty.

FLDHE3506G	4 Weeks	12,630.00	1500 mL/min		qty.

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

FLDH3301C	4 Weeks	9,785.00	1.5 L/min		qty.

FLDH3302G	4 Weeks	9,785.00	3.5 L/min		qty.

FLDH3303G	4 Weeks	9,785.00	6 L/min		qty.

FLDH3304ST	4 Weeks	9,785.00	42 L/min		qty.

FLDH3305G	2 Weeks	9,785.00	35 mL/min		qty.

FLDH3306ST	4 Weeks	9,260.00	100 mL/min		qty.

FLDH3307S	4 Weeks	9,785.00	150 mL/min		qty.

FLDH3308G	4 Weeks	9,260.00	600 mL/min		qty.

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

FLDH3501S	4 Weeks	13,235.00	225 scfh		qty.

FLDH3502G	4 Weeks	12,630.00	100 mL/min		qty.

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

FLDN3301ST	4 Weeks	9,785.00	12 L/min		qty.

FLDN3302G	4 Weeks	9,785.00	6 mL/min		qty.

FLDN3303ST	4 Weeks	9,785.00	50 mL/min		qty.

FLDN3304S	4 Weeks	9,260.00	60 mL/min		qty.

FLDN3305G	4 Weeks	9,785.00	120 mL/min		qty.

FLDN3306S	4 Weeks	9,260.00	200 mL/min		qty.

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

FLDN3501ST	4 Weeks	13,035.00	1.6 scfm		qty.

FLDN3502G	4 Weeks	11,955.00	2 L/min		qty.

FLDN3503G	4 Weeks	13,325.00	100 mL/min		qty.

FLDN3504C	4 Weeks	12,630.00	200 mL/min		qty.

FLDN3505C	4 Weeks	12,630.00	300 mL/min		qty.

FLDN3506S	4 Weeks	12,630.00	500 mL/min		qty.

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

FLDO3301G	4 Weeks	9,785.00	1 L/min		qty.

FLDO3302ST	4 Weeks	9,785.00	4 L/min		qty.

FLDO3303ST	4 Weeks	9,785.00	8 L/min		qty.

FLDO3304ST	4 Weeks	10,225.00	15 L/min		qty.

FLDO3305G	4 Weeks	9,785.00	50 mL/min		qty.

FLDO3306ST	4 Weeks	9,785.00	300 mL/min		qty.

FLDO3307ST	4 Weeks	10,225.00	500 mL/min		qty.

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

FLDO3501S	4 Weeks	12,630.00	1 L/min		qty.

FLDO3502S	4 Weeks	12,630.00	5 L/min		qty.

FLDO3503C	4 Weeks	12,630.00	10 L/min		qty.

FLDO3504ST	4 Weeks	12,630.00	16.50 L/min		qty.

FLDO3505C	4 Weeks	13,035.00	58 L/min		qty.

FLDO3506ST	4 Weeks	13,035.00	250 mL/min		qty.

FLDO3507S	4 Weeks	12,630.00	400 mL/min		qty.

Accessories

FLTR-1	3 Weeks	2,490.00	Tripod for one Variable Area Flow Meter		qty.

FLTR-2	3 Weeks	2,490.00	Tripod for 2, 4 and 6 isolated channels or manifolding at top.		qty.

FLTR-3	3 Weeks	2,360.00	Tripod for 3 and 5 isolated channels or manifolding at bottom.		qty.

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

Note: Comes complete with operator's manual.

Minimum flow rate is 10% of the maximum rate shown.

“G” suffix denotes glass float, “ST” suffix denotes 316 SS float, “C” suffix denotes carboloy float and “S” denotes red sapphire float.

For units without valve, add suffix "-NV" to model number and subtract $10 for aluminum; subtract $13 for for 316SS.

For 16 turn, high resolution non-rising stem valve for 150 mm variable area flow meters, add suffix "-HRV" to model number and add $60 for aluminum units and $120 for stainless steel units.

For O2 Cleaning add "-O2CLEAN" to the part number and $125 to the price.

No NIST traceable calibration is available.

(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, USD$13,035.00

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Direct Read Variable Area Flow Meters