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65 mm and 150 mm Variable Area Flow Meters

FL-3600 FL-3700 FL-3800 FL-3900

65 MM AND 150 MM Variable Area Flow Meters | FL-3600 FL-3700 FL-3800 FL-3900

65 MM AND 150 MM Variable Area Flow Meters

TWD6,921 FL-3607G

  • ±2% Full Scale Accuracy
  • Non-Rotating Seal Spindle
  • Easy-to-Read Scale Design
  • Special Lock Nut Design for Easy Tube Replacement
Variable Area Flow Meters & Switches - View related products

Description

The OMEGA™ precision variable-area variable area flow meters for air, water, and gases have up to ±2% of full scale accuracy and 0.25% of full scale repeatability (models ending in "07" or "45" have ±5% FS accuracy). These units feature an easy-to-read millimeter scale and are supplied with correlation charts for air and water. For correlation data for nitrogen, oxygen, hydrogen, helium, argon and carbon dioxide, please refer to the FLT Series flow tubes. Please consult the Engineering Department for details. The scale is fused on the metering tube in 1 mm (332") increments, which enables a user to read the flow rate with the highest accuracy.

The special scale design, where a vertical line runs through the length of the scale and intersects the horizontal scale divisions, reduces parallax and eye fatigue, thus insuring high-accuracy readings. The front polycarbonate shield is also curved to act as a magnifying glass, all of which yields superior performance over other variable area flow meters with standard design.

Easy Flow Tube Replacement
The important advantage of the FL-3600 through the FL-3900 variable area flow meters is their special locknut design, which facilitates the installation and replacement of flow tubes in the field for easy flow range change. The knurled locking nut on top of the tube is backed off with a small Allen wrench or a 1 mm (332") diameter rod, thereby releasing the tube for replacement. The system is designed so that the tube does not rotate while it is tightened into place. Only 2 different standard valves are used: one for flows up to 7000 cc/min of air, the other for higher flow rates. Six different high-resolution valves are used; consult Engineering for details when changing tubes.

Shielded for Pressurized Systems
These variable area flow meters, with precision-bored borosilicate glass metering tubes, are fully shielded against breakage. A white opaque rear shield provides a background to aid in discerning the float position for accurate readings.

Panel Mounting Design
These variable area flow meters are equipped with horizontal ports and NPT threads for easy panel mounting. The ports have external threads and are equipped with panel retaining nuts. No additional mounting hardware is required. Simply drill two holes 131 mm (5.156") apart (center to center) for 65 mm units, 240 mm (9.469") apart (center to center) for 150 mm units. Each hole should be 16 mm (58") in dia.

SPECIFICATIONS
Scales: 65 or 150 mm arbitrary scale
Accuracy: ±2% full scale (±5% FS on FL3607/3707 and FL3845/3945 models)
Repeatability: ±0.25% full scale
Connections: 1/8 FNPT, horizontal
Flow Tube: Borosilicate glass
End Fittings: Anodized aluminum or 316 SS
Side Panels: Aluminum
Valve Orifice: Polyacetal for aluminum models, Kel-F in 316 SS models
O-Rings and Packings: Buna in aluminum models, FKM in 316 SS models
Packings: FKM
Float Stops: PTFE
Max Temperature: 121°C (250°F)
Max Pressure: 200 psig (13.8 bar)
(Specify Model Number)

What Other People Bought: When you see this icon, click on it to expand a list of products that other people have bought when they purchased this model.

Part Number/Desc.
Qty
Description
65 mm Flowtubes, Aluminum Frame
  
FL-3607G
TWD6,921
Availability: 5 weeks
 
5.77 cc/min of air, .07 cc/min of water , ±5% FS accuracy
  
FL-3607ST
TWD6,921
Availability: 5 weeks
 
16.77 cc/min of air, .28 cc/min of water, ±5% FS accuracy
  
FL-3607C
TWD6,921
Availability: 5 weeks
 
32.99 cc/min of air, 0.62 cc/min of water, ± 5% FS accuracy
  
FL-3635G
TWD6,921
Availability: 1 week
 
48.7 cc/min of air, 0.59 cc/min of water
  
FL-3635ST
TWD6,920
Availability: 5 weeks
 
145 cc/min of air, 2.38 cc/min of water
  
FL-3613ST
TWD6,920
Availability: 5 weeks
 
298 cc/min of air, 5.78 cc/min of water
  
FL-3610G
TWD6,920
Availability: 5 weeks
 
202 cc/min of air, 2.64 cc/min of water
  
FL-3610ST
TWD6,920
Availability: 5 weeks
 
522 cc/min of air, 12.0 cc/min of water
  
FL-3610C
TWD6,920
Availability: 5 weeks
 
818 cc/min of air, 20.8 cc/min of water
  
FL-3651G
TWD6,920
Availability: 5 weeks
 
††1056 cc/min of air, 20.8 cc/min of water
  
FL-3692G
TWD6,920
Availability: 5 weeks
 
1249 cc/min of air, 26.97 cc/min of water
  
FL-3692ST
TWD6,920
Availability: 1 week
 
2520 cc/min of air, 70.67 cc/min of water
  
FL-3692C
TWD7,375
Availability: 5 weeks
 
3680 cc/min of air, 103.5 cc/min of water
  
FL-3688G
TWD6,920
Availability: 5 weeks
 
2040 cc/min of air, 39.7 cc/min of water
  
FL-3688ST
TWD6,920
Availability: 5 weeks
 
3980 cc/min of air, 108.3 cc/min of water
  
FL-3688C
TWD7,375
Availability: 5 weeks
 
5739 cc/min of air, 169.8 cc/min of water
  
FL-3665G
TWD6,920
Availability: 5 weeks
 
2678 cc/min of air, 52 cc/min of water
  
FL-3665ST
TWD6,920
Availability: 5 weeks
 
4922 cc/min of air, 150 cc/min of water
  
FL-3696ST
TWD6,920
Availability: 5 weeks
 
12,058 cc/min of air, 364 cc/min of water
  
FL-3617ST
TWD6,921
Availability: 5 weeks
 
24,680 cc/min of air, 745 cc/min of water
  
FL-3663ST
TWD7,375
Availability: 5 weeks
 
42,094 cc/min of air, 1261 cc/min of water
  
FL-3663ST-NV
TWD5,035
Availability: 5 weeks
 
42,094 cc/min or air, 1261 cc/min of water, no valve
FL-3663C
FL-3663C
TWD7,375
Availability: 1 week
 
58,500 cc/min of air, 1866 cc/min of water
FL-3663C
FL-3663C
TWD7,375
Availability: 1 week
 
58,500 cc/min of air 1866 cc/min of water
65 mmFlowtubes, 316 Stainless Steel Frame
  
FL-3707G
TWD11,035
Availability: 5 weeks
 
5.77 cc/min of air, .07 cc/min of water, ±5% FS accuracy
  
FL-3707ST
TWD11,036
Availability: 5 weeks
 
16.77 cc/min of air, .28 cc/min of water, ±5% FS accuracy
  
FL-3707C
TWD11,035
Availability: 5 weeks
 
32.99 cc/min of air, .62 cc/min of water, ±5% FS accuracy
  
FL-3735G
TWD11,035
Availability: 5 weeks
 
48.7 cc/min of air, .59 cc/min of water
  
FL-3735ST
TWD11,035
Availability: 5 weeks
 
145 cc/min of air, 2.38 cc/min of water
  
FL-3713G
TWD11,035
Availability: 5 weeks
 
104 cc/min of air, 1.75 cc/min of water
  
FL-3713ST
TWD11,035
Availability: 5 weeks
 
298 cc/min of air, 7.24 cc/min of water
  
FL-3710G
TWD11,035
Availability: 5 weeks
 
202 cc/min of air, 2.64 cc/min of water
  
FL-3710ST
TWD11,035
Availability: 1 week
 
522 cc/min of air, 12.0 cc/min of water
  
FL-3710C
TWD11,035
Availability: 5 weeks
 
818 cc/min of air, 20.8 cc/min of water
  
FL-3751G
TWD11,035
Availability: 5 weeks
 
††1056 cc/min of air, 20.8 cc/min of water
  
FL-3751ST
TWD11,035
Availability: 5 weeks
 
††2125 cc/min of air, 58.7 cc/min of water
  
FL-3792G
TWD11,035
Availability: 5 weeks
 
1249 cc/min of air, 26.97 cc/min of water
  
FL-3792ST
TWD11,035
Availability: 5 weeks
 
2520 cc/min of air, 70.67 cc/min of water
  
FL-3792C
TWD11,535
Availability: 5 weeks
 
3680 cc/min of air, 103.5 cc/min of water
  
FL-3788G
TWD11,035
Availability: 5 weeks
 
2040 cc/min of air, 39.7 cc/min of water
  
FL-3788ST
TWD11,035
Availability: 5 weeks
 
3980 cc/min of air, 108.3 cc/min of water
  
FL-3788C
TWD11,035
Availability: 5 weeks
 
5739 cc/min of air, 169.8 cc/min of water
  
FL-3765G
TWD11,035
Availability: 5 weeks
 
2678 cc/min of air, 52 cc/min of water
  
FL-3765ST
TWD11,035
Availability: 5 weeks
 
4922 cc/min of air, 150 cc/min of water
  
FL-3796ST
TWD11,035
Availability: 5 weeks
 
12,058 cc/min of air, 364 cc/min of water
  
FL-3717ST
TWD11,035
Availability: 5 weeks
 
24,680 cc/min of air, 745 cc/min of water
  
FL-3763ST
TWD11,535
Availability: 5 weeks
 
42,094 cc/min of air, 1261 cc/min of water
  
FL-3763C
TWD11,535
Availability: 5 weeks
 
58,500 cc/min of air, 1866 cc/min of water
150 mm Flowtubes, Aluminum Frame
  
FL-3845G
Consult Sales  
Availability: 
 
 
18.6 cc/min of air, .196 cc/min of water, ±5% FS accuracy
  
FL-3845ST
Consult Sales  
Availability: 
 
 
61.8 cc/min of air, .956 cc/min of water, ±5% FS accuracy
  
FL-3845C
Consult Sales  
Availability: 
 
 
110 cc/min of air, 1.92 cc/min of water, % FS accuracy
  
FL-3841G
TWD8,005
Availability: 5 weeks
 
48.5 cc/min of air, .53 cc/min of water
  
FL-3841ST
TWD8,005
Availability: 5 weeks
 
141.5 cc/min of air, 2.45 cc/min of water
  
FL-3861G
TWD8,005
Availability: 5 weeks
 
92 cc/min of air, .85 cc/min of water
  
FL-3861SA
TWD8,005
Availability: 5 weeks
 
140 cc/min of air, 1.92 cc/min of water
  
FL-3861ST
TWD8,005
Availability: 5 weeks
 
263 cc/min of air, 4.7 cc/min of water
  
FL-3861C
TWD8,005
Availability: 5 weeks
 
454 cc/min of air, 8.5 cc/min of water
  
FL-3802G
TWD8,005
Availability: 1 week
 
374 cc/min of air, 5.5 cc/min of water
  
FL-3802ST
TWD7,579
Availability: 1 week
 
814 cc/min of air, 20.4 cc/min of water
  
FL-3802C
TWD8,005
Availability: 1 week
 
1222 cc/min of air, 33.7 cc/min of water
  
FL-3803G
TWD8,005
Availability: 5 weeks
 
825 cc/min of air, 16.5 cc/min of water
  
FL-3803ST
TWD8,005
Availability: 1 week
 
1682 cc/min of air, 46 cc/min of water
  
FL-3804G
TWD8,005
Availability: 5 weeks
 
2313 cc/min of air, 53.5 cc/min of water
  
FL-3804ST
TWD8,005
Availability: 5 weeks
 
4562 cc/min of air, 130 cc/min of water
FL-3805G
FL-3805G
TWD8,005
Availability: 5 weeks
 
3807 cc/min of air, 84.3 cc/min of water
  
FL-3805ST
TWD8,005
Availability: 5 weeks
 
7590 cc/min of air, 216.6 cc/min of water
  
FL-3839G
TWD8,005
Availability: 5 weeks
 
8678 cc/min of air, 210 cc/min of water
  
FL-3839ST
TWD8,005
Availability: 5 weeks
 
16,737 cc/min of air, 506 cc/min of water
  
FL-3840G
TWD8,550
Availability: 5 weeks
 
2,2536 cc/min of air, 541 cc/min of water
  
FL-3840ST
TWD8,550
Availability: 1 week
 
41,512 cc/min of air, 1288 cc/min of water
  
FL-3840C
TWD8,550
Availability: 5 weeks
 
59,494 cc/min of air, 1881 cc/min of water
150 mm Flowtubes, 316 Stainless Steel Frame
  
FL-3945G
Consult Sales  
Availability: 
 
 
18.6 cc/min of air, .196 cc/min of water, ±5% FS accuracy
  
FL-3945ST
Consult Sales  
Availability: 
 
 

This product is being discontinued refer to FL3600-FL3800-Series for a possible alternative.


61.8 cc/min of air, .956 cc/min of water, ±5% FS accuracy
  
FL-3945C
Consult Sales  
Availability: 
 
 
110 cc/min of air, 1.92 cc/min of water, ±5% FS accuracy
  
FL-3941G
TWD14,699
Availability: 5 weeks
 
48.5 cc/min of air, .53 cc/min of water
  
FL-3941ST
TWD14,700
Availability: 5 weeks
 
141.5 cc/min of air, 2.45 cc/min of water
  
FL-3961G
TWD14,700
Availability: 5 weeks
 
92 cc/min of air, .85 cc/min of water
  
FL-3961SA
TWD14,700
Availability: 5 weeks
 
140 cc/min of air, 1.92 cc/min of water
  
FL-3961ST
TWD14,700
Availability: 5 weeks
 
263 cc/min of air, 4.7 cc/min of water
  
FL-3961C
TWD14,704
Availability: 5 weeks
 
454 cc/min of air, 8.5 cc/min of water
  
FL-3902G
TWD14,700
Availability: 5 weeks
 
374 cc/min of air, 5.5 cc/min of water
  
FL-3902ST
TWD14,700
Availability: 5 weeks
 
814 cc/min of air, 20.4 cc/min of water
  
FL-3902C
TWD14,700
Availability: 5 weeks
 
1222 cc/min of air, 33.7 cc/min of water
  
FL-3903G
TWD14,700
Availability: 5 weeks
 
825 cc/min of air, 16.5 cc/min of water
  
FL-3903ST
TWD14,704
Availability: 5 weeks
 
1682 cc/min of air, 46 cc/min of water
  
FL-3904G
TWD14,700
Availability: 5 weeks
 
2313 cc/min of air, 53.5 cc/min of water
  
FL-3904G-HRV
TWD20,580
Availability: 5 weeks
 
2313 cc/min of air, 53.5 cc/min of water with 16 turn high resolution valve
  
FL-3904ST
TWD14,704
Availability: 5 weeks
 
4562 cc/min of air, 130 cc/min of water
  
FL-3905G
TWD14,700
Availability: 5 weeks
 
3807 cc/min of air, 84.3 cc/min of water
  
FL-3905ST
TWD14,704
Availability: 5 weeks
 
7590 cc/min of air, 216.6 cc/min of water
  
FL-3939G
TWD14,699
Availability: 5 weeks
 
8678 cc/min of air, 210 cc/min of water
  
FL-3939ST
TWD14,704
Availability: 5 weeks
 
16,737 cc/min of air, 506 cc/min of water
  
FL-3939ST-HRV
TWD20,580
Availability: 5 weeks
 
16,737 cc/min of air, 506 cc/min of water with 16 turn high resolution valve
  
FL-3939ST-HRV
TWD20,580
Availability: 5 weeks
 
16737 cc/min of air, 506 cc/min of water with 16 turn high resolution valve
  
FL-3940G
TWD15,155
Availability: 5 weeks
 
22,536 cc/min of air, 541 cc/min of water
  
FL-3940ST
TWD15,154
Availability: 5 weeks
 
41,512 cc/min of air, 1288 cc/min of water
  
FL-3940ST-HRV
TWD21,035
Availability: 5 weeks
 
41,512 cc/min of air, 1288 cc/min of water with 16 turn high resolution valve
  
FL-3940C
TWD15,155
Availability: 5 weeks
 
59,494 cc/min of air, 1881 cc/min of water
ACCESSORIES
  
FLTR-1
TWD2,862
Availability: 1 week
 
Tripod, one tube
  
FLTR-5
TWD3,400
Availability: 4 weeks
 
Tripod for 2 to 5 single Variable Area Flow Meters.
All prices on this site are shown in Taiwan Dollars.
Note: Comes complete with correlation tables (one each for air and water) printed on the back of the instruction sheet.

Suffix "G" denotes glass float
Suffix "ST"
Suffix "C" denotes carboloy float
Suffix "SA" denotes sapphire float.

Models ending in "07" or "45" have ±5% FS accuracy.

For units without valve, add suffix "-NV" to model number; 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; consult Flow Engineering for price.

For NIST traceable certificate for air, add suffix "-NISTAIR" to model number; add $225 to price.

For NIST traceable certificate for water, add suffix "-NISTWATER" to model number; add $275 to price.

For oxygen cleaning add "-02CLEAN" to model number, add $125 to price.

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

††New flow rate values effective on purchases after March 1, 2013 only.


Option Descriptions:


(1) Variable Area Flow Meter Types select from:
36 for 65 mm flowtube aluminum frame
37 for 65 mm flowtube 316 SS frame
38 for 150 mm flowtube aluminum frame
39 for 150 mm flowtube 316 SS frame

(2) Flow Tube and Float by Range select from:
07G for 65 mm 5.77 cc/mi air 0.07 cc/min water
07ST for 65 mm 16.77 cc/mi air 0.28 cc/min water
07C for 65 mm 32.99 cc/mi air 0.62 cc/min water
35G for 65 mm 48.7 cc/mi air 0.59 cc/min water
35ST for 65 mm 214.5 cc/mi air 2.38 cc/min water
13G for 65 mm 104 cc/mi air 1.75 cc/min water
13ST for 65 mm 298 cc/mi air 5.78 cc/min water
10G for 65 mm 202 cc/mi air 2.64 cc/min water
10ST for 65 mm 522 cc/mi air 12 cc/min water
10C for 65 mm 818 cc/mi air 20.8 cc/min water
51G for 65 mm 986 cc/mi air 20.5 cc/min water
51ST for 65 mm 1946 cc/mi air 55.6 cc/min water
92G for 65 mm 1249 cc/mi air 26.97 cc/min water
92ST for 65 mm 2520 cc/mi air 70.67 cc/min water
92C for 65 mm 3680 cc/mi air 103.5 cc/min water
88G for 65 mm 2040 cc/mi air 39.7 cc/min water
88ST for 65 mm 3980 cc/mi air 108.3 cc/min water
88C for 65 mm 5739 cc/mi air 169.8 cc/min water
65G for 65 mm 2678 cc/mi air 52 cc/min water
65ST for 65 mm 4922 cc/mi air 150 cc/min water
96ST for 65 mm 12058 cc/mi air 364 cc/min water
17ST for 65 mm 24680 cc/mi air 745 cc/min water
63ST for 65 mm 42094 cc/mi air 1261 cc/min water
63C for 65 mm 58500 cc/mi air 1866 cc/min water
45G for 150 mm 18.6 cc/mi air 0.196 cc/min water
45ST for 150 mm 61.8 cc/mi air 0.956 cc/min water
45C for 150 mm 110 cc/mi air 1.92 cc/min water
41G for 150 mm 48.5 cc/mi air 0.53 cc/min water
41ST for 150 mm 141.5 cc/mi air 2.45 cc/min water
61G for 150 mm 92 cc/mi air 0.85 cc/min water
61SA for 150 mm 140 cc/mi air 1.92 cc/min water
61ST for 150 mm 263 cc/mi air 4.7 cc/min water
61C for 150 mm 454 cc/mi air 8.5 cc/min water
02G for 150 mm 374 cc/mi air 5.5 cc/min water
02ST for 150 mm 814 cc/mi air 20.4 cc/min water
02C for 150 mm 1222 cc/mi air 33.7 cc/min water
03G for 150 mm 825 cc/mi air 16.5 cc/min water
03ST for 150 mm 1682 cc/mi air 46 cc/min water
04G for 150 mm 2313 cc/mi air 53.5 cc/min water
04ST for 150 mm 4562 cc/mi air 130.4 cc/min water
05G for 150 mm 3807 cc/mi air 84.3 cc/min water
05ST for 150 mm 7590 cc/mi air 216.6 cc/min water
39G for 150 mm 8678 cc/mi air 210 cc/min water
39ST for 150 mm 16737 cc/mi air 506 cc/min water
40G for 150 mm 22536 cc/mi air 541 cc/min water
40ST for 150 mm 41512 cc/mi air 1288 cc/min water
40C for 150 mm 59494 cc/mi air 1881 cc/min water

(3) Options select from:
Nothing(leave field blank) for no options (standard unit)
-NV for no valve option
-HRV for 16-turn high resolution non-rising stem valve (150 mm models only)
Note: All combinations may not be valid, check spec sheet for valid part numbers.
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