Series RM: 2", 5" or 10" Scale, Interchangeable Bodies* Rate-Master® Polycarbonate Flowmeter is suitable for both gas and liquid applications.

Series VF: Hot-Stamped Scales, Multi-Angle Views of Flow Visi-Float® Acrylic Flowmeter is a clear acrylic body flowmeters suitable for both gas and liquid applications. A few applications are medical equipment, air samplers, gas analyzers, and chemical injectors.

Series VFC/VFCII: Used to Indicate Air or Water Flow, End Connections Visi-Float® Acrylic Flowmeter is a clear acrylic body flowmeter suitable for both gas and liquid applications. A few applications are cabinet purging, remediation, and osmosis skids.

Series DR4: Direct Reading, 127 mm Scale, ±10% FS Accuracy High Flow Glass Flowmeter offers a solution to the problem of fluid flow indication at higher capacity levels. Designed to withstand even the harshest industrial applications.

Series VAT: In-Line, Chemically Inert Variable Area Fluoropolymer Flowmeters are ideal for high purity or corrosive liquid applications. Applications include chemical injectors and deionized water systems.

Series RSF: Dual, Rotatable Direct Reading Scales for Air and Water Rotatable Scale Flowmeters are ideal for the direct flow measurement of air, water, and other commonly used gases. Features borosilicate glass tubes. An application is water and air pollution analysis systems.

Series VA: 65 mm and 150 mm, ±2% FS Accuracy, Interchangeable Flowtubes, PTFE Options, Universal mm Scale Variable Area Glass Flowmeters are designed with easy to read scales. Suitable for metering carrier gases, liquid, and gas measurement in pilot plants, process flow, and level indicating.

Series TVA: 75 mm and 125 mm, 10:1 Turndown, Back Connect, Corrosive Resistant All Fluoropolymer Flowmeters offer solutions for measuring flow rates of highly corrosive or ultra-pure liquids. Applications include chemical injectors and deionized water systems.

Series DR: 65 mm and 150 mm, Interchangeable Flowtubes, Direct Reading Scales Direct Reading Glass Flowmeters are ideal for direct flow measurement of air, water, and other commonly used gases. Shipped completely assembled and include standard panel mounting hardware.

Series MM: 2" or 1-1/2" Scale, Configurable Valve Option Mini-Master® Flowmeter is suitable for both gas and liquid applications with advanced features at a low cost. Compact flowmeter ideal for measuring small volume air.

Series UV: Monitor Water Flow Rates from .25 to 40 GPM, Air Rates from 1 to 100 SCFM Ultra-View™ Polysulfone Flowmeter is a laboratory grade flowmeter with a dual scale that measures flow in GPM and LPM of water, air, and other compatible media.

Series MTF: Customize to Fit Application, 65 mm or 150 mm Variable Area Flow Tubes Multitube Flow System can be configured with up to six different flow tubes with various flow capacities and flow patterns. Ideal for multichannel metering, mixing, or monitoring applications.

Series IF: Air/Water Direct Reading Scale, 304 SS Protective Shield Industrial Direct Reading Flowmeters are directly measure flow rates for water and for air service. Applications include gas or liquid metering and industrial pneumatic or hydraulic systems.

Series VA-K: Interchangeable Flow Tubes and Floats, 150 mm Universal Scales Variable Area Flowmeter Kit is economical. Includes a completely assembled flowmeter and three interchangeable flow tubes. A few applications include air and water analysis, film processing, and pharmaceutical.

Series OMA: Use to Indicate and Manually Control Oxygen Flow Oxygen Flowmeter is for medical applications and manually controlling flow from oxygen generators. Flow levels are kept stable by precision valve and knob adjustment.

Series LFM: Chemically Resistant, In-Line or Panel Mount Options, Adjustable Set Point Indicator Option Polycarbonate Flowmeters are made of precision, injection molded polycarbonate bodies and fittings. They feature dual, direct reading scales measuring in both GPM and LPM.

RKA: Optional extras for both Rate-Master® Flowmeters and Visi-Float® Flowmeters Regulator Kits are available as optional extras. The standard regulator may be used with any Dwyer Series RM or VF flowmeter.

Questions

Question

How are Dwyer flowmeters properly read?

Answer

The flow rate is read at the maximum width portion of the float regardless of shape.

Related

Series VFC/VFCII

Series VF

Series MM

Series RM

Question

What factor is used to correct for different flowmeter inlet pressure?

Answer

If the flowmeter is exhausting to atmosphere, no correction factor is needed. If back-pressure is present due to downstream plumbing or restrictions, this error can be corrected utilizing the conversion curves in our full-line catalog or the following equation.

Pressure: Q2 = Q1 x √((P1 x T2)/(P2 x T1))

Where:
Q1 = Observed Flowmeter Reading
Q2 = Standard Flow Corrected for Specific Gravity
P1 = Actual Pressure (14.7 psia + Gage Pressure)
P2 = Standard Pressure (14.7 psia, which is 0 psig)
T1 = Actual Temperature (460 R + Temp °F)
T2 = Standard Temperature (530 R, which is 70°F)

Related

Series RM

Series VFC/VFCII

Series MM

Series VF

Question

Why are top mounted valves recommended for flowmeters used for vacuum service?

Answer

To maintain atmospheric pressure in the indicating bore and therefore preserve accuracy; an inlet restriction would reduce pressure in the bore. This is essentially the opposite situation to outlet back-pressure in a pressure system which increases pressure in the bore and also affects accuracy. Remember that all standard Dwyer flowmeters are calibrated for standard atmospheric pressure and temperature in the bore.

Related

Series MM

Series RM

Question

Is the Rate-Master® or Visi-Float® Flowmeter compatible with any media?

Answer

The Rate-Master® Flowmeter is manufactured from a polycarbonate plastic and the Visi-Float® Flowmeter is manufactured from acrylic. Compatibility charts need to be reviewed to determine if these materials of construction are compatible with your media.

Related