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M-50/55 flow switches0 pages
Non-Adjustable Flow Switches
M-50/55 Series
Fixed setting flow switch
with in-line flow
Features
• Very accurate custom flow settings
• For corrosive and non-corrosive liquids or
gases
• All-Teflon® switch available
• Senses increasing or decreasing flow
• Hermetically sealed
• Universal mounting available
The M-50/55 low flow, flow switches monitor increasing and
decreasing flow. They utilize a single moving part which
responds to fluid (liquid or gas) flowing within a system. These
switches are suitable for a wide range of applications in
industrial, biomedical, and OEM products. The flow monitors
operate only when fluid flow is positively established.
Applications
• Pure water control for sample stations
• Laser equipment
• Pollution sampling equipment
Calibration Range *
The operating principle is based on a free floating magnetic
piston which responds only to the motion of fluids within the
line, not to static or system pressures. In the presence of fluid
flow, controlled movement of the piston actuates an external
hermetically sealed reed switch thus producing the required
signal. This signal can be
used to actuate audible or
visual alarms as well as
relays, or other control.
Piston travel is short which
insures low hysteresis.
Pressure drop across flow
switch varies from 0.035 to
2 psi (at maximum flow
rates for air and for liquid).
Universal mounted units
are outfitted with a spring
which resets the piston.
Illustrated is the M-50
The spring is held in place
Model with 1/8” ports.
using an orifice disc.
Custom Versions Available
Malema welcomes the opportunity to apply its flow sensor
experience to work for its customers. Please contact the factory
for any special requirements; such as ports, extreme temperature
and pressure capabilities, etc.
malema flow sensors
M-50
Air:
50 - 5,000 scc/m
Water:
1 -170 cc/m
M-55
Air:
5,000 - 25,000 scc/m
Water:
170 - 750 cc/m
* For lower and higher trip points contact factory.
Maximum flows through switch are higher.
Specifications
Set Point Accuracy:
Repeatability:
Hysteresis:
±10% maximum
±2%
15%
Material Versions *
• Acrylic
• 316 Stainless Steel
• Aluminum (Anodized) • Teflon®
• Brass
* Other materials available on request.
Port Sizes
M-50
• 1/8” FNPT
• 1/4” FNPT
M-55
• 1/8” FNPT
Catalog # 215:
1
Non-Adjustable Flow Switches
Operation
