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Series VFC & VFCII Visi-Float® Acrylic Flowmeter

Series RM Rate-Master® Polycarbonate Flowmeter

Series MM Mini-Master® Flowmeter

2" or 1-1/2" Scale, Configurable Valve Option

The Series MM Mini-Master® Flowmeters consists of two series of flowmeters suitable for both gas and liquid applications with advanced features at a low cost. The Series MMA is a 2" (51 mm) scale flowmeter that is user configurable with or without non-removable top or bottom front mounted metering valves. It is constructed from transparent nylon material providing high chemical resistance and is easily disassembled via the provided key for cleaning or reconfiguration. The Series MMF is a 1-1/2" (38 mm) scale compact flowmeter ideal for measuring small volume air. It features bezel type mounting that can be quickly installed from the front of the instrument panel.

Note: Only the MMA is available in the Product Configurator.

Product Applications

Medical equipment
Air samplers
Gas analyzers
Pollution monitors
Chemical injectors
Cabinet purging

Starting at $38.20

Ordering

Filter By

MMA with CC/min Water Scale

MMA with GPH Water Scale

MMA with LPM Air Scale

MMA with LPM Water Scale

MMA with SCFH Air Scale

MMA without Valve

MMF with SCFH Air Scale

MMF with SCFH Air Scale and Bottom Mount Valve

MMF with SCFH Air Scale and Top Mount Valve

Grouped product items
Model	Description	Availability*	Price
MMA-20	Flowmeter, range .2-1.2 LPM air.	1-3 days*	$64.50
MMA-23	Flowmeter, range 1-10 LPM air.	1-3 days*	$64.50
MMA-25	Flowmeter, range 5-50 LPM air.	1-3 days*	$64.50
MMA-36	Flowmeter, range 10-150 cc/min water.	1-3 days*	$64.50
MMA-4	Flowmeter, range .5-5 SCFH air.	1-3 days*	$64.50
MMA-41	Flowmeter, range .25-2.5 LPM water.	1-3 days*	$64.50
MMA-7	Flowmeter, range 5-50 SCFH air.	1-2 Weeks*	$64.50
MMA-9	Flowmeter, range 20-200 SCFH air.	1-3 days*	$64.50
MMF-1	Flowmeter, range .1-1 SCFH air.	1-3 days*	$38.20
MMF-10	Flowmeter, range 1-10 SCFH air.	1-3 days*	$38.20
MMF-10-TMV	Flowmeter, range 1-10 SCFH air.	1-3 days*	$38.50
MMF-2	Flowmeter, range .2-2 SCFH air.	1-3 days*	$38.20
MMF-2-PV	Flowmeter, range .2-2 SCFH air.	1-3 days*	$38.50

Specifications

: MMA
Service:: Compatible gases and liquids.
Wetted Materials:: Body: Nylon 12; O-rings: Buna-N (optional materials available); Float: Black glass, K monel, stainless steel, tungsten carbide.
Temperature Limit:: 130°F (54°C).
Pressure Limit:: 100 psi (6.9 bar) with compression fitting. 50 psi (3.4 bar) with tubing clamp.
Accuracy:: ±4% FS.
Process Connection:: 5/16" OD for push on rubber or plastic tubing with provided spring tubing clamp. Connect to rigid tubing with double compression fitting.
Weight:: 1 oz (28.35 g).
Compliance:: Meets the technical requirements of EU Directive 2011/65/EU (RoHS II).
: MMF
Service:: Compatible gases and liquids.
Wetted Materials:: Body: Styrene acrylonitrile; Float: SS, black glass, nylon; Valve: Polyurethane.
Temperature Limit:: 125°F (51°C).
Pressure Limit:: 50 psi (3.4 bar), Valve option: 10 psi (0.6 bar).
Accuracy:: ±10% FS.
Process Connection:: 1/4" OD for push on rubber or plastic tubing. Connect to rigid tubing with double compression fittings.
Weight:: 0.5 oz (14.17 g).
Compliance:: Meets the technical requirements of EU Directive 2011/65/EU (RoHS II).

Features

Low installation costs with easy mounting
Long operation life with durable construction
Precision molding enables high repeatability
White back on the flow tube allows for better visibility of the float increasing reading accuracy
Side printed scale graduations allows for instantaneous flow reading saving time
Compact bodies require minimal panel space freeing valuable space

Options

These options are available on the Series MMF only:
-PV Metering Valve and Knob
-TMV Top Mounted Valve with Screwdriver Adjustment

Support Library

Product Literature

Manuals

Catalog Pages

Series MM Catalog Page

Approvals

RoHS Letter of Compliance

Drawings

3D Drawing - MMA

Model Chart

EXAMPLE	MMA	3	AT	Series MMA-3-AT Mini-Master® Flowmeter, range .5-2.5 SCFH air, with aluminum tag.
SERIES	MMA			Mini-Master® Flowmeter
RANGE		2 3 4 5 6 7 8 9 10 19 20 21 22 23 24 25 26 27 30 31 32 33 35 36 37 38 40 41 42		.2-1.2 SCFH Air .5-2.5 SCFH Air .5-5 SCFH Air 1-10 SCFH Air 2-20 SCFH Air 5-50 SCFH Air 10-100 SCFH Air 20-200 SCFH Air 30-300 SCFH Air .1-.5 LPM Air .2-1.2 LPM Air .25-2.5 LPM Air .5-5 LPM Air 1-10 LPM Air 2.5-25 LPM Air 5-50 LPM Air 10-100 LPM Air 15-150 LPM Air 1-8 GPH Water 1-16 GPH Water 4-40 GPH Water 5-60 GPH Water 5-50 cc/min Water 10-150 cc/min Water 20-200 cc/min Water 50-500 cc/min Water .1-1.1 LPM Water .25-2.5 LPM Water .3-3.5 LPM Water
OPTIONS			AT LV NIST VIT	Aluminum Tag Less Valve NIST Traceable Calibration Certificate Fluoroelastomer O-rings

FAQ

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

Is a Dwyer Certificate of Conformance offered with any of the flowmeter models?

Answer

A standard Dwyer Certificate of Conformance can be offered with all Dwyer Mini-Master®, Rate-Master®, and Visi-Float® flowmeters on all water ranges (or other compatible liquids).

Related

Series VFC/VFCII

Series MM

Series VF

Series RM

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

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

Which flowmeters are available with NIST traceability?

Answer

All Dwyer Mini-Master®, Rate-Master®, and Visi-Float® flowmeters are available with NIST traceability on all air ranges except for RMA-1, RMA-11, RMA-150, RMA-151, VFA-1, VFA-21 and VFB-60 models.

Related

Series VF

Series MM

Series VFC/VFCII

Series RM

Question

What are wetted materials in following flow meter part numbers? Are they compatible with HCl? MMF-10-TMV MMF-10 MMF-2-TMV MMF-2 Is MMF available in 4or 5 SCFH full scale? What is ball material for these ranges above?

Answer

The Series MMF flowmeters have the following wetted materials: Body: Styrene Acrylonitrile Float: Stainless Steel, Black glass, Nylon Valve: Polyurethane For the -2 range, the ball material is 302 stainless steel. For the -10 range, the ball material is nylon. Unfortunately, these materials are not compatible with HCl. Also, the 4 or 5 SCFH range is NOT a standard range for the MMF. The -10 range number would be the logical choice to pick since the 4 or 5 SCFH range would be encompassed.

Related