Malema M-200X Operating Instructions And Quick Start Manual Download Page 3

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Introduction

The M-200X Series flow switches are engineered and field tested for sensing increasing and decreasing flow rates of gases or 

liquids. Pressure variation effects are minimal. This series features such versatility, economy, and accuracy that they can be used 

in virtually any application requiring fool-proof inexpensive flow detection.

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 hermeti

-

cally 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 liquid). Universal mounted units are outfitted with a spring which resets the piston. 

The spring is held in place using a perforated disc.

   

 

 

 

 

     llustrated is the M-200 Model with 1/2” ports.

Storage and Handling

Storage conditions

Store the product under packed condition in an anti-static bag. The storage place shall be free from moisture, mechanical shock 

and vibration. The ambient temperature shall be between 0°C and 60°C and the humidity between 5% and 80% R.H. without 

condensation.

Unpacking and Product Inspection

On delivery, check the product for damage. Confirm that the model code on the label matches the specification in the purchase 

order.

Installation Instructions

This product can be mounted in any orientation. Adequate filtration and sealing procedures should be used when mounting in

flow lines. 

Operating Environment

Choose a location with an ambient temperature of 10-35

°

C and relative humidity value <80% RH without exposure to direct 

sunlight. Avoid environments with high electromagnetic noise or vibration. Make sure that the module is protected from corrosive 

liquid or water splashes. For best performance avoid corrosive environments since they may degrade the performance of

the electronics after a period of time. Easy access for maintenance and inspection is always recommended.

Construction

The M-200 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. The M-200 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 All-Metal Piston.

1.  The standard piston is a 316 Stainless Steel piston with epoxy to hold the magnet in place. This piston is recommended for 

      non-aggressive fluids and inert gases. Stainless Steel retaining rings are typically used with this piston type.

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Summary of Contents for M-200X

Page 1: ...malema com M 200X Explosion proof adjustable flow switch with right angle Flow Operating Instructions and Quick Start Guide ...

Page 2: ...tents Introduction 03 Operation 03 Storage and Handling 03 Installation Instruction 03 Construction 03 Specification 05 Certification 06 Dimensional drawings 06 Flow Setting Information 07 Ordering Information 07 Warranty 08 ...

Page 3: ...without condensation Unpacking and Product Inspection On delivery check the product for damage Confirm that the model code on the label matches the specification in the purchase order Installation Instructions This product can be mounted in any orientation Adequate filtration and sealing procedures should be used when mounting in flow lines Operating Environment Choose a location with an ambient t...

Page 4: ...N C Normally closed 1 Loosen allen set screws 4 40 on face of body These are the set screws holding the reed switch in place 2 Move the reed switch downwards until it shows a closed contact on the multi meter 3 Tighten 4 40 allen set screws on face of the body 4 Cycle until on and off by turning upside down to simulate flow This may necessitate some refinement of the exact location of the reed swi...

Page 5: ...y Set point Differential Deadband Repeatability Higher accuracy units available 10 maximum 15 2 maximum Reed Switch Data Electrical Ratings Reed Switch Switching Voltage Breakdown Voltage DC Resistive AC Resistive Switching Current 10 Watts SPST or 3 Watts SPDT Hermetically Sealed UL Recognized File E47258 Operating temperature 40 C to 125 C 200 VDC 170 VDC for SPDT 250 VDC 200 VDC for SPDT 10 VA ...

Page 6: ...tions 2 Certified for ATEX and IECEX directives Details can be found on http www malema com certifications 3 Certified for CE compliance under ATEX 2014 34 EU directive Details can be found on http www malema com certifications Certifications Dimensional drawings Illustrated is the M 200X model with 1 2 ports Port size A B C D E F G 3 8 3 25 1 250 1 00 0 500 1 070 2 75 3 50 1 2 3 25 1 250 1 00 0 5...

Page 7: ...proximity to such interferences or relocate the flow switch away from them appropriately 07 This model is a adjustable flow switch The flow set point is fixed at the factory and is field adjustable 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 Cal...

Page 8: ... to the buyer Service and Repair To return the products please obtain an RMA number for the product by contacting Malema Sensors Corporate Office Boca Raton at 800 637 6418 or 561 995 0595 All returns of equipment must go to the following address Malema Sensors 1060 S Rogers Circle Boca Raton FL 33487 USA NOTE Specifications are subject to change without notice Warranty 08 2018 Malema Engineering ...

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