High Accuracy Flowmeter FM-1050

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Specialty Gases and Equipment

(514) 956-7503

Model FM-1050 Series (150mm)

Description

Matheson's FM-1050 Series Flowmeters provide the most accurate indication and precise control of fluids available for a wide range of applications. This versatile meter is functionally and dimensionally interchangeable with other current designs while incorporating many innovative features.

All FM-1050 Series glass metering tubes have integral float guides to assure a guaranteed ±5% (±1% with optional calibration) of full scale accuracy. Both glass and stainless steel floats are included. The meters are available in a range of 150mm reference indicating scales. Be sure to request calibration data for the gas (es) you will be measuring.

Standard with this series is the uniquely designed Tube Cube®. The "cube," a unitized tube holder, aligns the tube quickly and easily for simple tube installation or replacement. The Tube Cube® provides protection during handling, reducing chipped tube ends, broken tubes and misalignment. The 1.5 X scale magnification lens allows for a more accurate reading. End seals in the FM-1050 are direct acting and nonrotating for fast alignment and convenient service access.

FM1050

There are also 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 and repeatability

Design Features

High resolution 150mm scale length
Precision tapered, fluted metering tube
Low pressure drop for increased available flow rates at low feed pressures
Standard front panel mounting requires minimum hardware --- easy installation, quick access
Available utility and high precision metering valves do not require special fittings
Simplified, direct acting, nonrotating compression plug for quick and easy tube sealing

Specifications
Pressure Rating:	250 psig maximum
Temperature Rating:	250ºF maximum
Accuracy:	±5% of full scale flow rate
Optional Accuracies:	±1% and 3% of full scale for reference scales only
Repeatability:	0.25% of scale reading
Range:	10 to 1, i.e., 100% to 10% of full scale
Scale Readings	mm or linear flow with conversion curves and/or factors. Special direct reading scales available
Shipping Weight:	1 lb

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; EPR, Kalrez or Teflon --- 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 and 316 stainless steel --- standard; sapphire, Carboloy or Tantalum --- optional
Scale:	Ceramic ink on glass tube, length 150mm

Click here for additional general information
Click here for Tube Cube information
Click here for Replacement Seal Kits and Parts

Flow Tube Capacities for FM-1050 Series Flowmeters, Reference Scales
Tube No.	Float Material	CO₂ Carbon Dioxide (SCCM)	AR Argon (SCCM)	O₂ Oxygen (SCCM)	Air (SCCM)	N₂ Nitrogen (SCCM)	Natural Gas (SCCM)	He Helium (SCCM)	H₂ Hydrogen (SCCM)	Utility Valve Size	HA Valve Size
E910*	Glass	0.34-108	0.23-88	0.25-97	0.13-104	0.29-108	0.47-162	0.26-144	0.56-269	7	1
E100	Glass & Stainless Steel	6.8-200	4.6-140	5.2-145	6-150	6.5-175	9-270	5.3-160	11.7-360	7	2
E200	Glass & Stainless Steel	11-280	7-220	8-240	10-270	10.5-275	14.5-410	9-260	19-560	7	2
E300	Glass & Stainless Steel	36-750	32-690	35-770	38-840	39-850	56-1180	47-1350	99-2500	7	3
E406	Glass & Stainless Steel	72-1450	75-1490	83-1660	88-1800	90-1850	111-2430	163-3680	278-6509	7	4
		(SLPM)	(SLPM)	(SLPM)	(SLPM)	(SLPM)	(SLPM)	(SLPM)	(SLPM)
E500	Glass & Stainless Steel	0.22-4.4	0.21-4.13	0.24-4.69	0.23-4.6	0.25-5	0.35-6.9	0.51-10.4	0.81-16.2	8	5
E606	Glass & Stainless Steel	0.34-6.6	0.34-6.7	0.38-7.4	0.4-7.6	0.42-7.9	0.53-10	0.81-16.5	1.3-26.4	8	5
E700	Glass & Stainless Steel	0.77-14.4	0.76-14.3	0.85-16.1	0.88-16	0.91-17.2	1.26-22.6	2-39.8	3.09-59.6	9	6
E800	Glass & Stainless Steel	2.05-37.4	2.06-38.1	2.32-43.1	2.4-44	2.47-46	3.21-59.3	5.71-110.7	8.6-161.1	9	6

All flow rates are at 70ºF and 14.7 psia
NOTE: Reference tubes are supplied with correlation charts for air and water flow rates at STP. If you require a correlation chart for other gases or liquids, or at pressures or temperatures other than standard, please indicate such when ordering.
*0-100 calibrated correlated reference tube scale only

Ordering 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.

Model Number Generator for FM-1050 Series Glass Tube Flowmeters
MODEL SERIES	VALVE TYPES	ACCESSORIES
E = Model FM-1050 Glass Tube Flowmeter with 150mm 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	EXXX = See Capacity Table For FM-1050 Series Flowmeters
5 = Monel ® with Viton Seals	2 = 1/4" NPT Female	These are Reference Scale Flowmeters. Be sure to request calibration data for the gas(es) you will be measuring
6 = 316 Stainless Steel with Teflon® Seals	3 = 1/8" Tube
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