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Compact High Accuracy Flowmeter
Model FM-1000 Series (65mm)

Description


The FM-1000 Series Flowmeters incorporate the innovative design of the FM-1050 in a more compact unit without reducing standards of accuracy. This is the rotameter of choice for those interested in conserving space. The same ±5% full scale accuracy is guaranteed for the 65mm scale length of these flowmeters.

Unlike the FM-1050 series which use reference scales, the FM-1000 Series flowmeters are direct reading for air, and are available in either English or Metric units. Choose between a black glass or a stainless steel float. These flow tubes are fluted to provide better float stability.

The FM-1000 Series glass metering tubes are enclosed in the Tube Cube®. Protection of the tube, magnified tube scale for easy reading and alignment during replacement are afforded with this unitized holder. Integral fluted float guides for optimum float performance are standard with all tubes unless otherwise specified.


Like the FM-1050 there are three valve options available:

  • No valve for those who just want indication
  • Utility (six-turn) valve for those who desire control as well as indication
  • High accuracy (fifteen-turn) valve for very precise control
Design Features
  • Rugged, compact design
  • Precision tapered, fluted metering tube
  • Tube Cube® unitized glass tube holding assembly
  • Reflective plastic background and 1.5 X magnification lens for excellent readability
  • Safety blow-out back panel
  • Full 10 to 1 (100% to 10% full scale) metering range
  • Low pressure drop for increased flow rates at low feed pressures
  • Easy installation and quick service access
  • Optional utility and high performance valves do not require special fittings
  • Corrosion resistant options: all wetted parts of 316 stainless steel or Monel® with Viton® or Teflon® seals
  • Custom scales and flow curves available
Specifications

Pressure Rating: 250 psig maximum operating pressure
Temperature Rating: 250ºF maximum operating temperature
Accuracy: ±5% of full scale flow rate --- consult factory for higher accuracies
Repeatability: 0.25% of scale reading
Range: 10 to 1, i.e., 100% to 10% of full scale
Scale Readings: Direct reading air. Special other scales available
Shipping Weight: 1 lb

 

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Materials of Construction
 
Wetted End Blocks, Fittings and Internal Parts: Anodized aluminum, brass, 316 stainless steel, Kynar® or Monel®
Seal Materials: Buna-N or Viton® --- standard; Teflon®, EPR, or Kalrez® --- optional
Side Plates: Painted or anodized aluminum
Metering Tube: Borosilicate glass enclosed in Tube Cube holder
Piping Connections: Aluminum, brass, 316 stainless steel or Monel 1/8" female NPT horizontal on inlet and outlet (see Accessories for optional connections)
Float Materials: Black glass or 316 stainless steel --- standard; sapphire, ceramic, Carboloy® or Tantalum --- optional
Scale: Ceramic ink on glass tube, length 65mm


Flow Tube Capacities for FM-1000 Series Flowmeters, Direct Reading
 
Float
Material
Tube
No
Air
(SLPM)*
Tube
No.
Air
(SCFH)*
Tube
No.
Water
(CCM)
Tube
No.
Water
(GPH)
Utility
Valve Size†
HA
Valve Size†
Glass J009 10-130ccm J011 0.02-0.24 J013 0.4-1.5 J015 0.004-0.02 7 2
Stainless Steel J010 20-300ccm J012 0.05-0.65 J014 0.5-6.5 J016 0.01- 0.1 7 2
Glass J109 100-500ccm J111 0.2-1.1 J113 1-8 J115 0.02-0.13 7 3
Stainless Steel J110 200-1000ccm J112 0.4-2.2 J114 4-24 J116 0.06-0.36 7 3
Glass J209 0.1-1 J211 0.2-2.8 J213 2-20 J215 0.02-0.32 8 4
Stainless Steel J210 0.1-2.1 J212 0.2-4.4 J214 5-55 J216 0.05-0.9 8 4
Glass J409 0.5-5 J411 1-11 J413 10-140 J415 0.1-2.2 8 5
Stainless Steel J410 0.5-9.5 J412 2-20 J414 20-280 J416 0.2-4.4 8 6
Glass J509 2-24 J512 5-55 J515 50-600 J518 1-10 9 6
Stainless Steel J510 2-50 J513 10-100 J516 100-1500 J519 2-24 9 6
Carboloy J511 5-70 J514 10-150 J517 0.2-2.2 LPM J520 2-34 9 6

*All air flow rates are at 70ºF and 14.7 psia
†At 10 psig inlet pressure

 

Order Information
Model Series Number of
Metering Tubes
End Blocks/
Seal Material
Valve Types Connections Accessories Connection Orientation Flow Tube
(Capacities)

To build a Rotometer Part Number, use our Rotometer Model Number Builder.

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Model Number Generator for FM-1000 Series Glass Tube Flowmeters

MODEL SERIES
VALVE TYPES ACCESSORIES
J = Model FM-1000 Glass Tube Flowmeter with 65mm tube A = Utility Valve on Inlet 0 = None
NUMBER OF METERING TUBES B = Utility Valve on Outlet 1 = Bezel & Bracket — Clear Anodized Aluminum
1 = Single Tube Unit C = High Accuracy Valve on Inlet 5 = Base Plate Assembly
2 = Two Tube Unit D = High Accuracy Valve on Outlet 7 = Bezel & Bracket — Black Anodized Aluminum
3 = Three Tube Unit G = Valve Plug on Inlet 9 = Clean for Oxygen Service
4 = Four Tube Unit H = Valve Plug on Outlet Z = 1% Accuracy (Full Scale)
END BLOCKS/SEAL MATERIAL K = Valve Cavity only CONNECTION ORIENTATION
1 = Aluminum with Buna-N Seals Y = No Valve/No Plug 1 = Back In and Back Out
3 = Chrome Plated Brass with Buna-N Seals CONNECTIONS FLOW TUBE (CAPACITIES)
4 = 316 Stainless Steel with Viton® Seals 1 = 1/8" NPT Female JXXX = See Capacity Table For FM-1000 Series Flowmeters
5 = Monel® with Viton Seals 2 = 1/4" NPT Female
6 = 316 Stainless Steel with Teflon® Seals 3 = 1/8" Tube Note that the FM-1000 Series are direct reading scale flowmeters for air. Inquire for other tube scales available.
7 = Monel with Teflon Seals 4 = 1/4" Tube
A = Aluminum with Viton Seals 5 = 1/8" Hose
B = Chrome Plated Brass with Viton Seals 6 = 1/4" Hose (3/16"-3/8" Hose Tapered)
D = 316 Stainless Steel with Buna-N Seals D = 1/8" NPT Inlet & 1/4" Hose Outlet
E = 316 Stainless Steel with EPR Seals E = 1/8" NPT Inlet & 1/4" Tube Outlet
F = Monel with Buna-N Seals H = 1/8" Tube Inlet & 1/4" Tube Outlet
K = Kynar® with Viton Seals
L = Kynar with EPR Seals
N = 316 Stainless Steel with Kalrez® Seals


Model FM-1000 Series (65mm) Flowmeter Dimensions