Page 313 - Praxair - Specialty Gases and Equipment Reference Guide

Flow Devices

150 mm Flowmeter

150 MM, Variable Area Flowmeters (Series 150)
Series 150 flowmeters offer an accurate yet economical means
of measuring gas or liquid flow at low pressures and over a wide
range of flow rates. Suitable for both plant and laboratory use,
they are widely used in gas chromatography, atomic absorption
spectroscopy and process control.

Standard Features
n Two (2) floats per tube expand n Ten-to-one (10:1) rangeability.
range of flowmeter. n Metering tubes sealed by
n Interchangeability of control compression.
valve and metering tube n Metering tube assemblies
assemblies without disconnect- contain float stops to prevent 150 mm, Variable
ing from the process piping. float loss during tube assembly Area Flowmeter
n Rib-guided metering tube for removal.
improved float stability and n Available with or without a
accuracy. control valve.
n Ceramic scales, with contrasting Calibration
background for easy viewing,
fired on metering tube. Standard (+ 5% accuracy) calibration is performed using Air at normal
temperature (70 °F) and pressure (14.7 psia). Calibrations for gases other
than air are mathematically derived from the air calibration. Calibration
Optional Features charts for air are shipped with each flowmeter or replacement tube.
Calibration charts for many other gases and gas mixtures are available
n Sapphire, carboloy or tantalum n Baseplate with leveling screws at no additional charge. Specify the required calibration charts when
floats allow range of flowmeter permits bench use. ordering. The accuracy of this calibration is +5% of full scale. All charts
to be changed without replacing n High resolution control valve for are supplied in metric flow metric flow increments (i.e. sccm or slpm)
the tube. precise flow control. unless otherwise specified.

Specifications Materials
n Scale n Performance n Metering Tube n Structural Members (cont.)
Length: 150 mm Accuracy: ± 5% full scale. Borosilicate glass Metering Valve:
Type: Fused on metering Accuracy specified for 100% n Floats Black anodized aluminum
tube with contrasting yellow to 10% of scale reading Glass and 316 stainless steel (standard cartridge valve only),
background (10 to 1 rangeability) (standard). Sapphire, carboloy brass/nickel-plated brass (high
Graduations: 0-150 mm with Repeatability: ± 0.25% of full and tantalum optionally resolution control valve only) or
calibration data scale reading available – refer to Tube 316 stainless steel.
n Capacities n Connections Selection Table (see page E •313) n Shields
Refer to Tube Selection Table 1/8" female NPT threaded and Optional Equipment Window: Clear polycarbonate
Section E – Gas Handling Equipment
adapters with locknuts for Back: Opaque white
n Maximum Operating n Float Stops
Pressure and Temperature front panel mounting Teflon polycarbonate
Ratings n Approximate Weight n Structural Members n Tube Packing and O-rings
200 psig at temperatures 1 lb Side Plates: Black anodized Viton (optional materials
®
up to 200 °F aluminum available)
End Fittings: Black anodized Viton – DuPont Dow
®
aluminum or 316 stainless steel Elastomers, L.L.C.
Ordering Information
Single (1)-Tube Flowmeter Configuration End Blocks Valve Assembly Inlet and Outlet
Part Number Material Materials Adapter Material
PRSFM4300-( ) Without Valve Aluminum Not Applicable Aluminum
PRSFM4310-( ) Without Valve 316 SS Not Applicable 316 SS
PRSFM4301-( ) With Standard Cartridge Valve Aluminum Aluminum Aluminum
PRSFM4311-( ) With Standard Cartridge Valve 316 SS 316 SS l316 SS
PRSFM4302-( ) With High Resolution Control Valve Aluminum Brass, nickel-plated brass Aluminum
and 316 stainless steel
PRSFM4312-( ) With High Resolution Control Valve 316 SS 316 SS 316 SS
Note:
Where ( ) is indicated “Single (1) – Tube Flowmeter Part Number”, complete the part
number by inserting applicable tube number from Tube Selection Table on page E •313.
Example: PRSFM4300-1. Order by complete part number.

E•312 1-877-PRAXAIR www.praxairdirect.com