Direct Read Variable Area Flow Meters

FLD Series

^THB6,911.01 FLDA3220ST

PLACE ORDER

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

Variable Area Flow Meters & Switches - View related products

Description

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

(Specify Model Number)

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Part Number/Desc.

Qty

Description

ALUMINUM FRAMES

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

FLDW3201S

THB7,820.00

Availability: 5 weeks

1 L/min

FLDW3202ST

THB7,635.00

Availability: 5 weeks

1.2 L/min

FLDW3203ST

THB6,915.00

Availability: 1 week

3 L/hr

FLDW3204G

THB7,204.73

Availability: 5 weeks

0.5 mL/min

FLDW3205ST

THB7,204.73

Availability: 1 week

6 mL/min

FLDW3206G

THB6,915.00

Availability: 5 weeks

25 mL/min

FLDW3207ST

THB7,204.73

Availability: 5 weeks

60 mL/min

FLDW3208ST

THB7,005.00

Availability: 5 weeks

115 mL/min

FLDW3209ST

THB6,630.00

Availability: 5 weeks

150 mL/min

FLDW3210G

THB7,858.59

Availability: 5 weeks

250 mL/min

FLDW3211G

THB7,858.59

Availability: 5 weeks

500 mL/min

FLDW3212ST

THB7,390.00

Availability: 5 weeks

750 mL/min

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

FLDA3201C

THB7,005.00

Availability: 5 weeks

2.2 scfh

FLDA3202G

THB7,005.00

Availability: 5 weeks

6 scfh

FLDA3203ST

THB7,204.73

Availability: 1 week

10 scfh

FLDA3204ST

THB7,005.00

Availability: 1 week

18 scfh

FLDA3205ST

THB6,545.00

Availability: 5 weeks

25 scfh

FLDA3206ST

THB7,204.73

Availability: 1 week

50 scfh

FLDA3207ST

THB7,535.00

Availability: 5 weeks

90 scfh

FLDA3208C

THB7,858.59

Availability: 1 week

150 scfh

FLDA3209C

THB7,535.00

Availability: 5 weeks

0.6 scfm

FLDA3210G

THB7,204.73

Availability: 1 week

1 L/min

FLDA3211G

THB7,060.00

Availability: 5 weeks

1.15 L/min

FLDA3212ST

THB7,204.73

Availability: 1 week

2 L/min

FLDA3213ST

THB6,911.01

Availability: 1 week

4 L/min

FLDA3214G

THB7,204.73

Availability: 1 week

5 L/min

FLDA3215ST

THB6,911.01

Availability: 1 week

10 L/min

FLDA3216ST

THB7,858.59

Availability: 5 weeks

16 L/min

FLDA3217ST

THB7,204.73

Availability: 1 week

25 L/min

FLDA3218ST

THB7,230.00

Availability: 1 week

40 L/min

FLDA3219G

THB6,911.01

Availability: 1 week

7 mL/min

FLDA3220ST

THB6,911.01

Availability: 1 week

50 mL/min

FLDA3221ST

THB6,819.71

Availability: 1 week

75 mL/min

FLDA3222G

THB6,911.01

Availability: 1 week

100 mL/min

FLDA3223ST

THB7,005.00

Availability: 1 week

130 mL/min

FLDA3224C

THB7,204.73

Availability: 1 week

250 mL/min

FLDA3225C

THB7,204.73

Availability: 5 weeks

500 mL/min

FLDA3226G

THB7,005.00

Availability: 5 weeks

1000 mL/min

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

FLDW3401C

THB10,850.00

Availability: 5 weeks

29 gph

FLDW3402S

THB10,995.00

Availability: 5 weeks

0.22 gpm

FLDW3403C

THB10,710.00

Availability: 5 weeks

0.45 gpm

FLDW3404ST

THB10,710.00

Availability: 5 weeks

1.2 L/min

FLDW3405T

THB11,460.94

Availability: 1 week

2 L/min

FLDW3406S

THB10,030.00

Availability: 5 weeks

1 mL/min

FLDW3407S

THB10,455.49

Availability: 5 weeks

10 mL/min

FLDW3408ST

THB10,455.49

Availability: 5 weeks

20 mL/min

FLDW3409G

THB10,455.49

Availability: 5 weeks

50 mL/min

FLDW3410G

THB10,030.00

Availability: 5 weeks

60 mL/min

FLDW3411G

THB10,030.00

Availability: 5 weeks

100 mL/min

FLDW3412C

THB10,455.49

Availability: 5 weeks

237 200 mL/min

FLDW3413ST

THB10,030.00

Availability: 5 weeks

237 500 mL/min

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

FLDA3401C

THB10,030.00

Availability: 5 weeks

2.5 scfh

FLDA3402G

THB10,165.00

Availability: 5 weeks

5 scfh

FLDA3403G

THB10,031.90

Availability: 5 weeks

8.25 scfh

FLDA3404ST

THB10,030.00

Availability: 5 weeks

10 scfh

FLDA3405ST

THB10,030.00

Availability: 5 weeks

16.5 scfh

FLDA3406C

THB10,031.90

Availability: 5 weeks

23 scfh

FLDA3407G

THB10,710.00

Availability: 5 weeks

55 scfh

FLDA3408ST

THB10,707.79

Availability: 5 weeks

90 scfh

FLDA3409ST

THB10,710.00

Availability: 5 weeks

94 scfh

FLDA3410S

THB10,995.00

Availability: 5 weeks

1 scfm

FLDA3411ST

THB10,710.00

Availability: 5 weeks

1.5 scfm

FLDA3412C

THB10,455.49

Availability: 5 weeks

1.25 L/min

FLDA3413ST

THB10,030.00

Availability: 5 weeks

1.8 L/min

FLDA3414G

THB9,495.00

Availability: 5 weeks

2.5 L/min

FLDA3415G

THB10,030.00

Availability: 5 weeks

4 L/min

FLDA3416S

THB10,165.00

Availability: 5 weeks

4.5 L/min

FLDA3417ST

THB10,030.00

Availability: 5 weeks

4.8 L/min

FLDA3418S

THB10,030.00

Availability: 5 weeks

5 L/min

FLDA3420C

THB10,455.49

Availability: 5 weeks

10 L/min

FLDA3421ST

THB10,165.00

Availability: 5 weeks

17 L/min

FLDA3422G

THB10,710.00

Availability: 5 weeks

23 L/min

FLDA3425S

THB10,029.26

Availability: 1 week

25 mL/min

FLDA3423ST

THB11,450.00

Availability: 1 week

42 L/min

FLDA3426S

THB10,455.49

Availability: 1 week

52 mL/min

FLDA3424C

THB10,710.00

Availability: 5 weeks

60 L/min

FLDA3427C

THB10,165.00

Availability: 5 weeks

75 mL/min

FLDA3428ST

THB10,029.26

Availability: 1 week

100 mL/min

FLDA3429C

Consult Sales

Availability:

100 mL/min

FLDA3430ST

THB10,165.00

Availability: 5 weeks

150 mL/min

FLDA3431ST

THB10,455.49

Availability: 1 week

200 mL/min

FLDA3432G

THB10,455.49

Availability: 5 weeks

300 mL/min

FLDA3433S

THB10,029.26

Availability: 1 week

500 mL/min

FLDA3434G

THB10,029.26

Availability: 5 weeks

800 mL/min

STAINLESS STEEL FRAMES

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

FLDW3301S

THB14,925.00

Availability: 5 weeks

1 L/min

FLDW3302ST

THB15,063.31

Availability: 5 weeks

1.2 L/min

FLDW3303ST

THB13,825.00

Availability: 5 weeks

3 L/hr

FLDW3304G

THB13,825.00

Availability: 5 weeks

0.5 mL/min

FLDW3305ST

THB14,010.00

Availability: 5 weeks

6 mL/min

FLDW3306G

THB14,010.00

Availability: 5 weeks

25 mL/min

FLDW3307ST

THB13,825.00

Availability: 5 weeks

60 mL/min

FLDW3308ST

THB13,825.00

Availability: 5 weeks

115 mL/min

FLDW3309ST

THB13,825.00

Availability: 5 weeks

150 mL/min

FLDW3310G

THB14,450.00

Availability: 5 weeks

250 mL/min

FLDW3311G

THB14,640.00

Availability: 1 week

500 mL/min

FLDW3312ST

THB14,010.00

Availability: 5 weeks

750 mL/min

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

FLDA3301C

THB13,825.00

Availability: 5 weeks

2.2 scfh

FLDA3302G

THB14,010.00

Availability: 5 weeks

6 scfh

FLDA3303ST

THB14,010.00

Availability: 1 week

10 scfh

FLDA3304ST

THB13,825.00

Availability: 5 weeks

18 scfh

FLDA3305ST

THB14,590.00

Availability: 5 weeks

25 scfh

FLDA3306ST

THB13,825.00

Availability: 5 weeks

50 scfh

FLDA3307ST

THB14,450.00

Availability: 5 weeks

90 scfh

FLDA3308C

THB14,450.00

Availability: 5 weeks

150 scfh

FLDA3309C

THB13,825.00

Availability: 5 weeks

0.6 scfm

FLDA3310G

THB14,415.62

Availability: 5 weeks

1 L/min

FLDA3311G

THB14,415.62

Availability: 5 weeks

1.15 L/min

FLDA3312ST

THB13,825.00

Availability: 5 weeks

2 L/min

FLDA3313ST

THB13,825.00

Availability: 5 weeks

4 L/min

FLDA3314G

THB13,826.47

Availability: 5 weeks

5 L/min

FLDA3315ST

THB13,826.47

Availability: 5 weeks

10 L/min

FLDA3316ST

THB15,245.00

Availability: 5 weeks

16 L/min

FLDA3317ST

THB13,825.00

Availability: 5 weeks

25 L/min

FLDA3318ST

THB14,450.00

Availability: 5 weeks

40 L/min

FLDA3319G

THB14,415.62

Availability: 5 weeks

7 mL/min

FLDA3320ST

THB14,010.00

Availability: 5 weeks

50 mL/min

FLDA3321ST

THB13,825.00

Availability: 5 weeks

75 mL/min

FLDA3322G

THB14,010.00

Availability: 5 weeks

100 mL/min

FLDA3323ST

THB14,010.00

Availability: 5 weeks

130 mL/min

FLDA3324C

THB14,010.00

Availability: 5 weeks

250 mL/min

FLDA3325C

THB13,825.00

Availability: 5 weeks

500 mL/min

FLDA3326G

THB14,010.00

Availability: 5 weeks

1000 mL/min

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

FLDW3501C

THB17,850.00

Availability: 5 weeks

29 gph

FLDW3502S

THB18,415.00

Availability: 5 weeks

0.22 gpm

FLDW3503C

THB17,120.00

Availability: 1 week

0.45 gpm

FLDW3504ST

THB17,850.00

Availability: 5 weeks

1.2 L/min

FLDW3505T

THB18,660.00

Availability: 5 weeks

2 L/min

FLDW3506S

THB17,850.00

Availability: 5 weeks

1 mL/min

FLDW3507S

THB18,610.15

Availability: 5 weeks

10 mL/min

FLDW3508ST

THB18,085.00

Availability: 5 weeks

20 mL/min

FLDW3509G

THB17,850.00

Availability: 5 weeks

50 mL/min

FLDW3510G

THB17,850.00

Availability: 5 weeks

60 mL/min

FLDW3511G

THB17,850.00

Availability: 5 weeks

100 mL/min

FLDW3512C

THB17,850.00

Availability: 5 weeks

200 mL/min

FLDW3513ST

THB17,850.00

Availability: 5 weeks

500 mL/min

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

FLDA3501C

THB18,610.15

Availability: 5 weeks

2.5 scfh

FLDA3502G

THB17,850.00

Availability: 5 weeks

5 scfh

FLDA3503G

THB17,850.00

Availability: 5 weeks

8.25 scfh

FLDA3504ST

THB18,610.15

Availability: 5 weeks

10 scfh

FLDA3505ST

THB17,850.00

Availability: 5 weeks

16.5 scfh

FLDA3506C

THB18,610.15

Availability: 5 weeks

23 scfh

FLDA3507G

THB18,415.00

Availability: 5 weeks

55 scfh

FLDA3508ST

THB19,202.33

Availability: 5 weeks

90 scfh

FLDA3509ST

THB18,415.00

Availability: 5 weeks

94 scfh

FLDA3510S

THB18,700.00

Availability: 5 weeks

1 scfm

FLDA3511ST

THB18,660.00

Availability: 5 weeks

1.5 scfm

FLDA3512C

THB18,610.15

Availability: 5 weeks

1.25 L/min

FLDA3513ST

THB18,085.00

Availability: 5 weeks

1.8 L/min

FLDA3514G

THB18,610.15

Availability: 5 weeks

2.5 L/min

FLDA3515G

THB17,850.00

Availability: 5 weeks

4 L/min

FLDA3516S

THB18,085.00

Availability: 5 weeks

4.5 L/min

FLDA3517ST

THB17,850.00

Availability: 5 weeks

4.8 L/min

FLDA3518S

THB17,850.00

Availability: 5 weeks

5 L/min

FLDA3519G

THB18,610.15

Availability: 5 weeks

10 L/min

FLDA3520C

THB17,850.00

Availability: 5 weeks

10 L/min

FLDA3521ST

THB17,850.00

Availability: 5 weeks

17 L/min

FLDA3522G

THB18,415.00

Availability: 5 weeks

23 L/min

FLDA3525S

THB18,610.15

Availability: 5 weeks

25 mL/min

FLDA3523ST

THB18,415.00

Availability: 5 weeks

42 L/min

FLDA3526S

THB18,610.15

Availability: 5 weeks

52 mL/min

FLDA3524C

THB18,414.00

Availability: 5 weeks

60 L/min

FLDA3527C

THB18,830.00

Availability: 5 weeks

75 mL/min

FLDA3528ST

THB18,610.15

Availability: 5 weeks

100 mL/min

FLDA3529C

Consult Sales

Availability:

100 mL/min

FLDA3530ST

THB17,850.00

Availability: 5 weeks

150 mL/min

FLDA3531ST

THB19,202.33

Availability: 5 weeks

200 mL/min

FLDA3532G

THB17,850.00

Availability: 4 weeks

300 mL/min

FLDA3533S

THB17,850.00

Availability: 5 weeks

500 mL/min

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

FLDAR3301G

THB13,825.00

Availability: 5 weeks

2.5 scfh

FLDAR3302ST

THB14,010.00

Availability: 1 week

10 scfh

FLDAR3303ST

THB14,010.00

Availability: 1 week

22 scfh

FLDAR3304G

THB15,063.31

Availability: 1 week

50 scfh

FLDAR3305S

THB14,415.62

Availability: 5 weeks

1000 mL/min

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

FLDAR3501C

THB17,851.47

Availability: 1 week

2 L/min

FLDAR3502ST

THB18,610.15

Availability: 5 weeks

15 L/min

FLDAR3503S

THB18,701.39

Availability: 1 week

25 L/min

FLDAR3504C

THB18,085.00

Availability: 4 weeks

325 mL/min

FLDAR3505G

THB17,850.00

Availability: 5 weeks

33 mL/min

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

FLDC3301G

THB14,415.62

Availability: 1 week

1 L/min

FLDC3302G

THB14,415.62

Availability: 1 week

6 L/min

FLDC3303ST

THB14,010.00

Availability: 5 weeks

10 L/min

FLDC3304ST

THB15,063.31

Availability: 5 weeks

35 L/min

FLDC3305ST

THB14,010.00

Availability: 1 week

20 mL/min

FLDC3306G

THB14,415.62

Availability: 1 week

55 mL/min

FLDC3307S

THB14,415.62

Availability: 1 week

200 mL/min

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

FLDC3501G

THB18,610.15

Availability: 5 weeks

100 mL/min

FLDC3502ST

THB18,415.00

Availability: 5 weeks

300 mL/min

FLDC3503S

THB18,700.00

Availability: 5 weeks

10 L/min

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

FLDHE3301S

THB14,415.62

Availability: 5 weeks

65 mL/min

FLDHE3302G

THB14,415.62

Availability: 5 weeks

120 mL/min

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

FLDHE3501S

Consult Sales

Availability:

1.25 scfh

FLDHE3502C

THB18,610.15

Availability: 1 week

5 L/min

FLDHE3503ST

THB18,610.15

Availability: 5 weeks

40 L/min

FLDHE3504G

THB17,850.00

Availability: 5 weeks

100 mL/min

FLDHE3505C

THB18,610.15

Availability: 1 week

500 mL/min

FLDHE3506G

THB17,850.00

Availability: 5 weeks

1500 mL/min

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

FLDH3301C

THB13,827.93

Availability: 1 week

1.5 L/min

FLDH3302G

THB14,415.62

Availability: 1 week

3.5 L/min

FLDH3303G

THB13,826.47

Availability: 1 week

6 L/min

FLDH3304ST

THB14,415.62

Availability: 1 week

42 L/min

FLDH3305G

THB13,827.93

Availability: 1 week

35 mL/min

FLDH3306ST

THB13,260.00

Availability: 1 week

100 mL/min

FLDH3307S

THB13,826.47

Availability: 4 weeks

150 mL/min

FLDH3308G

THB14,415.62

Availability: 5 weeks

600 mL/min

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

FLDH3501S

THB18,700.00

Availability: 5 weeks

225 scfh

FLDH3502G

THB17,850.00

Availability: 5 weeks

100 mL/min

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

FLDN3301ST

THB14,415.62

Availability: 1 week

12 L/min

FLDN3302G

THB14,415.62

Availability: 1 week

6 mL/min

FLDN3303ST

THB14,415.62

Availability: 1 week

50 mL/min

FLDN3304S

THB13,827.93

Availability: 1 week

60 mL/min

FLDN3305G

THB14,415.62

Availability: 1 week

120 mL/min

FLDN3306S

THB14,415.62

Availability: 1 week

200 mL/min

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

FLDN3501ST

THB19,202.33

Availability: 5 weeks

1.6 scfm

FLDN3502G

THB18,610.15

Availability: 1 week

2 L/min

FLDN3503G

THB18,610.15

Availability: 5 weeks

100 mL/min

FLDN3504C

THB18,320.00

Availability: 5 weeks

200 mL/min

FLDN3505C

THB18,610.15

Availability: 5 weeks

300 mL/min

FLDN3506S

THB18,610.15

Availability: 1 week

500 mL/min

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

FLDO3301G

THB14,010.00

Availability: 5 weeks

1 L/min

FLDO3302ST

THB13,825.00

Availability: 5 weeks

4 L/min

FLDO3303ST

THB13,826.47

Availability: 1 week

8 L/min

FLDO3304ST

THB14,450.00

Availability: 5 weeks

15 L/min

FLDO3305G

THB14,010.00

Availability: 5 weeks

50 mL/min

FLDO3306ST

THB13,827.93

Availability: 5 weeks

300 mL/min

FLDO3307ST

THB14,450.00

Availability: 5 weeks

500 mL/min

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

FLDO3501S

THB17,850.00

Availability: 5 weeks

1 L/min

FLDO3502S

THB18,610.15

Availability: 1 week

5 L/min

FLDO3503C

THB17,851.47

Availability: 5 weeks

10 L/min

FLDO3504ST

THB17,849.87

Availability: 5 weeks

16.50 L/min

FLDO3505C

THB18,415.00

Availability: 5 weeks

58 L/min

FLDO3506ST

THB18,415.00

Availability: 5 weeks

250 mL/min

FLDO3507S

THB17,850.00

Availability: 4 weeks

400 mL/min

Accessories

FLTR-1

THB3,514.69

Availability: 3 weeks

Tripod for one Variable Area Flow Meter

FLTR-2

THB3,664.06

Availability: 4 weeks

Tripod for 2, 4 and 6 isolated channels or manifolding at top.

FLTR-3

THB3,420.00

Availability: 4 weeks

Tripod for 3 and 5 isolated channels or manifolding at bottom.

Order By Part Number

Part Number

Qty

Part Number

Qty

† All prices on this site are shown in Thai Baht.
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, THB19,202.33