Mini-Master Flowmeters from Dwyer Instruments

Offering advanced features at low cost, the Dwyer Series MM flowmeters are ideal for a wide range of OEM and user application in medical equipment, air samplers, gas analyzers, pollution monitors, chemical injectors, cabinet purging, etc.

The standard Model MMA flowmeter is suitable for both gas and liquid applications. It can be configured by the user with the parts provided to have non-removable top or bottom from mounted metering valves or no valve at all. The transparent nylon material provides high chemical resistance, low moisture absorption and is transparent to facilitate routine inspection. Using the assembly key provided, the flowmeter can be disassembled anytime for cleaning or reconfiguration. In OEM quantities, ultrasonically welded caps or interchangeable mole cores enable production of the Mini-Master® A flowmeter with a low profile or flat front surface where no valve is required.

The Mini Master® A is practically unbreakable, mounts easily, and is easy to read. Two 5/16" O.D. mounting-connection tubes permit quick push-on connection of rubber or plastic tubing. A bottom clip for "stand up" mounting is also provided.

Despite its compactness, the Mini-Master® A flowmeter features a 2" scales which combined with precision molding, enables highly repeatable readings to be made to within ±4% accuracy.

Where a compact flowmeter is required to measure small volume air flows, the Model MMF is recommended. Easy to mount, they require a minimum of panel space. A white back on the flow tube makes the ball float easy to see. The scale is highly visible and easy to read. Scale graduations are printed on aluminum alongside the flow tube (not on it), so the position of ball float is instantly visible.

The Model MMF's bezel type mounting is modern, attractive and quickly installed from the font of instrument panel. Two ¼" O.D. mounting-connection tubes are integrally molded with flowmeter body. They can be back connected to flexible rubber or plastic tubing and held in place with two spring retainers which are furnished. If preferred, connections may be made to metal or rigid plastic tubing with a double compression fitting or nylon tube union such as Dwyer Part No. A-328.

Excellent repeatability and ±10% accuracy make the Mini-Master® F flowmeter an excellent value at its low cost.

Mini-Master® Flowmeters

Model MMF mounts easily from front of panel. Drill two 9/32" or 5/16" diameter holes in panel on 2 1/16" centers. Insert mounting connector spuds. From rear, slide on the two spring retainers (furnished) and push on rubber or plastic tubing.

Model MMF connections. Connector at top, installed in panel, has retainer and flexible tubing in place. Connector at bottom shows alternative connection with metal or rigid plastic tubing, using a double compression nylon tube union (as Dwyer Part No. A-328).

MODEL MMA
Molded entirely from nylon 12. Measure and control air/gas flow from
.1-200 SCFH, water/liquid flow from 1 to 60 GPH.

SPECIFICATIONS
Meter Body, Bezel, Tube, Valve and Knob	Nylon 12
Floats	Black glass, K Monel, stainless steel, tungsten carbide
Connections	Molded with body. 5/16" O.D. for push-on rubber or plastic tubing with spring tubing clamp provided. Connect to rigid tubing with double compression fitting.
Scale	Lithograph printed on aluminum. Clear epoxy coated.
Pressure Rating	To 100 PSI (maximum) with compression fitting. To 50 PSI with tubing clamp.
Temperature	130°F
Scale length	2"
Accuracy	±4% of full scale.
"O" Rings	Buna-N; optional materials available.
Color	Clear. Knob and assembly key dyed black.

Series MMA MINI-MASTER Models and Ranges
Range SCFH Air	Ordering Number	Range LPM Air	Ordering Number	Range GPH water	Ordering Number
.5-2.5 .5-5 1-10 2-20 5-50 10-100 20-200 30-300	3 4 5 6 7 8 9 10	.2-1.2 .25-2.5 .5-5 1-10 2.5-25 5-50 10-100 15-150	20 21 22 23 24 25 26 27	.5-8 1-16 4-40 5-60	30 31 32 33
				CC/Min. Water
				5-50 10-120 20-200 50-500	35 36 37 38
				LPM Water
				.1-1.1 .25-2.5 .3-3.5	40 41 42

MODEL MMF
Molded entirely from SAN. To indicate or manually control small
volume air or non-corrosive gas flow from .1 to 100 SCFH.

SPECIFICATIONS
Meter Body, Bezel, Tube, Valve and Knob	Styrene-acrylonitrile.
Floats	Stainless Steel, Black Glass and Nylon
Connections	Molded with body, ¼" O.D. For push-on rubber or plastic tubing, or connect to metal or rigid plastic tubing with compression fittings.
Scale	Lithograph printed on aluminum. Clear epoxy coated.
Pressure Rating	To 50 PSI maximum. (Valve Model leak-tight below 10 PSI).
Temperature Rating	To 125°F maximum.
Scale length	1 ½"
Accuracy	±10% of Full Scale; better accuracy between 10% and 90% of Full Scale.
	OPTIONS	CODE
Metering Valve and Knob	Molded Polyurethane	PV
Top Mounted Valve with Screwdriver Adjustment	Molded Polyurethane (for vacuum service only)	TMV

MINI-MASTER® Ranges-Series MMF
Model MMF - 1 ½" Scale
Range SCFH Air	Ordering Number
.1-1 .2-2 1-10 5-50 10-100	1 2 10 50 100
NOTE: For OEM quantity applications, special ranges and scales also available.