M-50X Fixed Set point Flow Switch
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Explosion proof flow switch with in-line flow ♦ Well suited for corrosive and non-corrosive gases or liquids ♦ UL recognized for hazardous locations ♦ ISSep certied for intrinsic safety and encapsulation ♦ Community Europe compliant ♦ Universal mounting available ♦ Hazardous fluid systems The M-50X Explosion Proof Series low flow monitors increasing and decreasing flow, it utilizes a single moving part which responds to fluid (liquid or gas) flowing within a system. This switch is suitable for a wide range of applications in industrial, biomedical, and OEM products. The flow monitors operate only when fluid flow is positively established. 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 controls. Piston travel is short which ensures low hysteresis. Pressure drop across flow switch varies from 0.035 to 2 psi (at maximum flow rates of air and liquid). Universal mounted units are fitted with a spring which resets the piston. The spring is held in place using an orifice disc. Custom Versions Available Malema welcomes the opportunity to apply its flow sensor experi- ence to work for its customers. Please contact the factory for any special requirements; such as ports, extreme temperature and pres- Retainer Ring Retainer Ring Reed Switch Inside Capsule Illustrated is the M-50X Model with 1/8" ports. Calibration Range * * For lower and higher trip points contact factory. Maximum flows through switch are higher. Set Point Accuracy: ±10% maximum Material Versions * Port Size * Other materials available on request; only the • 1 /8" FNPT 316 SS is ISSep Certied. • 1/A" FNPT Corporate Headquarters West Coast Headquarters Asia Headquarters 1060 S Rogers Circle Boca Roton, FL 33487 3350 Scott Blvd Bldg. 43 Santa Clara, CA 95054 10 Ang Mo Kio St 65 Techpoint #02-14 Singapore 569059

Design Considerations/Construction The M-50X Series comprises a Body, Piston, and Retaining Rings. Selecting a Flow Switch begins with selecting the body; this series is available in 316 Stainless Steel, Monel 400, or Hastelloy 276. The M-50X Series contains one moving part (i .e. the piston) and two retaining rings that are in the fluid path. Construction of the piston is important from a design perspective. We manufacture three types of pistons (it is critical to select the correct piston for your application): 316 Stainless Steel, PTFE Encapsulated, and Special Ail-Metal piston. (1) The...

Reed Switch Ratings as Recognized by UL Installation & Maintenance The standard switch has to be mounted vertically in the position shown on the previous page for normally open conditions or for normally closed conditions (to convert from normally open to nor- mally closed, use yellow and green leads instead of orange and green). Universal units can be mounted horizontally or vertically. Please advise mounting orientation while ordering, so that the factory can calibrate in the required orientation as calibration does change when changing orien- tation (i.e. if a universal mounted unit is...

Dimensional and Cut-Away Drawings Illustrated is the M-50X Model with 1/8" ports. Retainer Ring Retainer Ring - WELDED PLUG Corporate Headquarters West Coast Headquarters Asia Headquarters 1060 S Rogers Circle Boca Roton, FL 33487 3350 Scott Blvd Bldg. 43 Santa Clara, CA 95054 10 Ang Mo Kio St 65 Techpoint #02-14 Singapore 569059

Fixed Flow Setting Information This model is a FIXED flow switch. The flow set point is fixed at the factory and is NOT field adjust- able. Proper calibration of the set point requires the following information. When purchasing a flow switch, use the "Set Point Calibration " form on page i-vi or provide this information on the purchase order. • Increasing or decreasing flow, • Fluid type (i.e. liquid or gas), • Density or specific gravity, • System pressure and temperature, • Flow direction (i.e. upward or downward), and • Mounting orientation (i.e. horizontal or vertical). Ordering...