Model 50S

SKU 50S Categories ,

McMillan Model 50S Mass Flow Meters are constructed from stainless steel and are capable of measuring virtually any clean, dry gas as low as 0-20 sccm or as high as 0-100 L/minute.

Flow Technology
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Description

McMillan Model 50S Mass Flow Meters are constructed from stainless steel and are capable of measuring virtually any clean, dry gas as low as 0-20 sccm or as high as 0-100 L/minute. Repeatable results are achieved using a patented thermal mass flow sensor design. This proven design minimizes zero drift while maintaining fast response and linear outputs.

Because of the compact size and economical cost of these products, the Model 50S Mass Flow Meters are suitable for a wide variety of industrial, commercial, laboratory and O.E.M. applications.

Thermal mass flow meters feature fast response, virtually zero maintenance, and precise measurement. These are essential qualities for today’s variety of applications.

Features & Options

FLOW RANGES

Flow ranges from 0-20 sccm up to 0-100 L/minute are available. Consult the factory for custom requirements.

POWER

Units may be ordered to operate with either 12 VDC or 24 VDC power. Various power adapters are available for use with 12 VDC versions.

SIGNAL OUTPUTS

Choose from either 0-5VDC or 4-20mA linear outputs.

ACCURACY/LINEARITY

All models have a standard accuracy specification of ±1.5% F.S. accuracy (including linearity). NIST traceable calibration certificates are optional on some models.

FLUID CONNECTIONS

All units have compression-type tube fittings as standard. Consult Product Configurator for available materials and sizes.

ELECTRICAL CONNECTIONS

All units have a 36” (92 cm) output cable, terminated with a 6-pin PS/2 style connector. An optional mating cable assembly, terminated with pigtail leads, is recommended to facilitate wiring.

WETTED MATERIALS

50S units feature stainless steel construction. See specifications for detailed materials in gas path.

DISPLAYS

Units without integrated displays may be used with McMillan’s line of external remote displays. Please request additional information from factory on remote displays available.

CALIBRATION GASES

Units may be calibrated for virtually any clean, dry gas. Several non-standard gas selections are available as indicated in the Product Configurator. Contact factory for calibration information on non-standard gases.

Typical Pressure Drop

Specifications

Compatible Gases
Accuracy (including linearity)

±1.5% Full Scale

Repeatability

±0.25% Full Scale

Pressure Rating

500 psig (34.5 barg)

Pressure Sensitivity

±0.02% Full Scale per psi (per 69 mbar)

Temperature Rating

Operating Range: 10 to 50ºC
Storage Range: 0 to 70ºC

Temperature Sensitivity

±0.15% F.S. or less per ºC

Body Leak Integrity (not including fittings)

1 x 10-7 sccs of He

Wetted Materials

303 Stainless Steel
304 Stainless Steel
316 Stainless Steel
Epoxy

Fitting Material

Stainless Steel

Recommended Filtration

20 microns or less

Compatible gases

Clean, dry gases compatible with wetted materials

0-5 VDC Output Signal

Minimum 2.5 Kohm load

4-20 mA Output Signal

Maximum 300 ohm loop resistance

Warm-Up Time

Less than 5 minutes

Integrated Display

none

Power Requirement

Suffix B: 22-25VDC
Suffix C: 15-25 VDC
Suffix D: 12-15 VDC

Typical Power Consumption

120 mA

Peak Power Consumption

160 mA

Electrical Connections

Integrated 36” (92 cm) cable, terminated with 6-pin Mini-DIN (PS/2 Style)

Settling Time

Typically <1 second for 97% of final value

Reliability

100,000 Hours MTBF

Downloads

CategoriesTitleSummaryFile SizeDownload
Data Sheets (PDF)50X_DS-50X 2405 A.pdf

Latest data sheet for the 50X Series

2 MB

Related Products

McMillan Model 50SD Mass Flow Meters feature an integrated flow rate display and are constructed from stainless steel. They are capable of measuring virtually any clean, dry gas as low as 0-20 sccm or as high as 0-100 L/minute.
McMillan RHODIUM Series Flow Controllers are capable of measuring and controlling virtually any clean, dry gas as low as 0 – 50 sccm or as high as 0 – 10 L/min. Repeatable results are achieved using a platinum-based micro-electromechanical system (MEMS) flow rate sensor device that is manufactured with extreme precision to ensure consistent results from unit to unit.

McMillan S113 Flow Meters feature all-metal construction and are capable of measuring extremely low flow rates. Units are available that measure gases as low as 20 mL/min and as high as 10 L/min. Full scale accuracies of ± 3.0% are standard.

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