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Rotameters designed for direct read flow rates,
the FLD Series gas 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
Rotameters Helio (more models available)
model
Leng.
Range
FLDHE3301S
65mm
65 mL/min
FLDHE3302G
65mm
120 mL/min
FLDHE3502C
150mm
5 L/min
FLDHE3503ST
150mm
40 L/min
FLDHE3504S
150mm
100 mL/min
FLDHE3505C
150mm
500 mL/min
FLDHE3506G
150mm
1500 mL/min
Rotameters Argon (more models available)
model
Leng.
Range
FLDAR3305S
65mm
1000 mL/min
FLDAR3501C
150mm
2 L/min
FLDAR3502ST
150mm
15 L/min
FLDAR3503S
150mm
25 L/min
FLDAR3504C
150mm
325 mL/min
FLDAR3505G
150mm
33 mL/min
Rotameters CO2 (more models available)
model
Leng.
Range
FLDC3301G
65mm
1 L/min
FLDC3302G
65mm
6 L/min
FLDC3303ST
65mm
10 L/min
FLDC3304ST
65mm
35 L/min
FLDC3305ST
65mm
20 mL/min
FLDC3306G
65mm
55 mL/min
FLDC3307S
65mm
200 mL/min
FLDC3501G
150mm
100 mL/min
FLDC3502ST
150mm
300 mL/min
FLDC3503S
150mm
10 L/min
Rotameters Hydrogen (more models available)
model
Leng.
Range
FLDH3301C
65mm
1.5 L/min
FLDH3302G
65mm
3.5 L/min
FLDH3303G
65mm
6 L/min
FLDH3304ST
65mm
42 L/min
FLDH3305G
65mm
35 mL/min
FLDH3306ST
65mm
100 mL/min
FLDH3307S
65mm
150 mL/min
FLDH3308G
65mm
600 mL/min
FLDH3502G
150mm
100 mL/min
Rotameters Oxygen (more models available)
model
Leng.
Range
FLDO3301ST
65mm
1 L/min
FLDO3302ST
65mm
4 L/min
FLDO3303ST
65mm
8 L/min
FLDO3304ST
65mm
15 L/min
FLDO3305G
65mm
50 mL/min
FLDO3306T
65mm
300 mL/min
FLDO3307ST
65mm
500 mL/min
FLDO3501S
150mm
1 L/min
FLDO3502S
150mm
5 L/min
FLDO3503C
150mm
10 L/min
FLDO3504ST
150mm
16.50 L/min
FLDO3505C
150mm
58 L/min
FLDO3506ST
150mm
250 mL/min
FLDO3507S
150mm
400 mL/min
Rotameters Nitogen (more models available)
model
Leng.
Range
FLDN3301ST
65mm
12 L/min
FLDN3302G
65mm
6 mL/min
FLDN3303ST
65mm
50 mL/min
FLDN3304S
65mm
60 mL/min
FLDN3305G
65mm
120 mL/min
FLDN3306S
65mm
200 mL/min
FLDN3502G
150mm
2 L/min
FLDN3503G
150mm
100 mL/min
FLDN3504C
150mm
200 mL/min
FLDN3505C
150mm
300 mL/min
FLDN3506S
150mm
500 mL/min
Rotameters Air 65mm (more models available)
model
Range
model
Range
model
Range
model
Range
FLDA3*10G
1 L/min
FLDA3*15ST
10 L/min
FLDA3*20ST
50 mL/min
FLDA3*25C
500 mL/min
FLDA3*11G
1.15 L/min
FLDA3*16ST
16 L/min
FLDA3*21ST
75 mL/min
FLDA3*26G
1000 mL/min
FLDA3*12ST
2 L/min
FLDA3*17ST
25 L/min
FLDA3*22G
100 mL/min
FLDA3*13ST
4 L/min
FLDA3*18ST
40 L/min
FLDA3*23ST
130 mL/min
FLDA3*14G
5 L/min
FLDA3*19G
7 mL/min
FLDA3*24C
250 mL/min
Rotameters Air 150mm (more models available)
model
Range
model
Range
model
Range
model
Range
FLDA3**12C
1.3 L/min
FLDA3**18S
5 L/min
FLDA3**23ST
42 mL/min
FLDA3**30ST
150 mL/min
FLDA3**13ST
1.8 L/min
FLDA3**19G
10 L/min
FLDA3**26S
52 mL/min
FLDA3**31ST
200 mL/min
FLDA3**14G
2.5 L/min
FLDA3**20C
10 L/min
FLDA3**24C
60 mL/min
FLDA3**32G
300 mL/min
FLDA3**15G
4 L/min
FLDA3**21ST
17 mL/min
FLDA3**27C
75 mL/min
FLDA3**33S
500 mL/min
FLDA3**16S
4.5 L/min
FLDA3**22G
23 L/min
FLDA3**28ST
100 mL/min
FLDA3**34G
800 mL/min
FLDA3**17ST
4.8 L/min
FLDA3**25S
25 mL/min
FLDA3**29C
100 mL/min
* Insert "2" for aluminium frame or "3" for SS frame
**Inserte "4" for aluminium frame or "5" for SS frame
Rotameters Water 65mm (more models available)
model
Range
model
Range
model
Range
model
Range
FLDW3*01S
1 L/min
FLDW3*04G
0.5 mL/min
FLDW3*07ST
60 mL/min
FLDW3*10G
250 mL/min
FLDW3*02ST
1.2 L/min
FLDW3*05ST
6m L/min
FLDW3*08ST
115 mL/min
FLDW3*11G
500 mL/min
FLDW3*03ST
3 L/hr
FLDW3*06G
25 mL/min
FLDW3*09ST
150 mL/min
FLDW3*12ST
750 mL/min
Rotameters Water 150mm (more models available)
model
Range
model
Range
model
Range
model
Range
FLDW3**04ST
1.2 L/min
FLDW3**07S
10 mL/min
FLDW3**10G
60 mL/min
FLDW3**13ST
500 mL/min
FLDW3**05ST
2 L/min
FLDW3**08ST
20 mL/min
FLDW3**11G
100 mL/min
FLDW3**06S
1 mL/min
FLDW3**09G
50 mL/min
FLDW3**12C
200 mL/min
* Insert "2" for aluminium frame or "3" for SS frame
**Inserte "4" for aluminium frame or "5" for SS frame
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