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M-60 Fixed Set point Flow Switch0 pages
Non-Adjustable Flow Switches
M-60 Series
Fixed setting flow switch
with in-line flow
Features
• For corrosive and non-corrosive liquids or
gases
• Senses increasing or decreasing flow
• Very accurate custom flow settings
• Hermetically sealed
• All-Teflon® switch available
• Universal mounting available
Operation
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. The
spring is held in place using an
Illustrated is the M-60
Model with 1/4” ports.
orifice disc.
Applications
•
•
•
•
•
•
Sample flow monitoring
Alarm actuation
Purge flows
Loss of flow protection
Semiconductor etch tools
Laser cooling equipment
Calibration Range *
Air:
25,000 - 55,000 scc/min
Water: 750 - 1,600 cc/min
* 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
• PVC
• Aluminum (Anodized) • 316 Stainless Steel
• Brass
• Teflon®
* Other materials available on request.
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
Port Sizes
• 1/4” FNPT
Catalog # 217:
1
Non-Adjustable Flow Switches
The M-60 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 used in semiconductor, industrial,
biomedical, and OEM products. The flow monitors operate
only when fluid flow is positively established. The M-60 is
available standard with 1/4” FNPT connections.
