Reed Relays and
Electronics India Limited
Manufacturer of Reed Switches, Reed Sensors and Reed-based products
Reed Relays and Electronics India Limited Incorporated in 1971

MS-212 Ultra-miniature Cylindrical Sensor

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Features

10W Contact Rating. Normally Open contact. Two sensitivity bands. Sputtered Ruthenium Contact.

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Benefits

Omni-polar. Does not require power for operation. RoHS Compliant. Not ESD Sensitive. Various Cables and Connectors Available.

Description

These ultra-miniature cylindrical magnet sensors are suitable for low level switching applications, and have a size advantage over the other cylindrical sensors. Various activating distances are available depending on the magnet and the AT band used. This sensor can be supplied with non-standard connectors on request. All sensors are tested 100% for operate and release AT, Contact Resistance and Variable Contact Resistance before packing. Cylindrical sensors can be used in pneumatic cylinder end position sensing applications. Being an omni-polar device, this sensor can be actuated with either a north pole or a south pole or both. Choosing the right AT band, magnet strength, and operating axis, will restrict the number of operates and releases to one.

Cylindrical and Rectangular Magnets

Standard magnets-RRE Drawing of Cylindrical MagnetsDrawing of Rectangular Bar Magnets starFeaturesNdFeB High Energy. Nickel coated. Energized Continue reading ->

Nov 18, 2020

Actuation Distances for MS-212 Cylindrical Sensor

MS-212 actuation-magnet parallel to sensor Operate and release distances for the MS-212 ultra-miniature cylindrical sensor in the two standard AT bands when actuated (as shown in Continue reading ->

Oct 30, 2020

Electrical

Contact FormA
Contact Rating (max)W/VA10.0
Switching Current (max)A0.5
Carry Current (max)A0.50
DC Switching Voltage (max)VDC100
Breakdown Voltage (min)VDC150
Contact Resistance (max)200
Insulation Resistance (min)Ω109
Capacitance (typ)pF0.2

Miscellaneous

Operate Time (max)ms0.35
Bounce Time (max)ms0.30
Release Time (max)ms0.15
Resonance Frequency (typ)Hz>2000
Operating Frequency (max)Hz500
Operating Temperature Range°C-40 to +140
Shock Resistance (½Sin wave for 11ms)G30
Vibration Resistance (10-2000 Hz)G20

Ordering Code

MS-212-(Operate Band Code)-(Cable Length in mm)-(Cable Termination Code)

Operate Band Code
1AT10-15
2AT15-20
Cable Termination CodeTermination Type
SStripped to 5.0 mm
TStripped and Tinned

Example: MS-212-1-500-T denotes MS-212 Magnet Sensor in 10-15 Operate Band (AT), with 500 mm cable length and Tinned Cable ends.

Other Special Configurations: Lower Static Contact Resistance, Dynamic Contact Resistance Limit, Special Release Limits.

Usage Notes

Here are some of the recommended usage notes to ensure maximum durability of this product. The complete usage notes are available here.

Ampere Turn Selection

Reed Sensor Manufacturer Cross Reference For any application, it is important to select the correct Ampere Turn (AT) or magnetic sensitivity of a Reed Switch, Reed Sensor or Continue reading ->

Aug 27, 2020

Effects of Temperature

Thermal sensor The normal operating temperature range for a reed contact is -40°C to +200°C, but too steep a rise or drop in temperature may Continue reading ->

Aug 27, 2020

Product Handling

Dropping Reed switch Reed Switch Handling Reed Switches, Reed Sensor and Magnet Sensors are sensitive devices that easily develop micro cracks in the glass Continue reading ->

Aug 31, 2020

Ferro-magnetic parts

Ferromagnetic parts Reed Switches use an alloy of Nickel and Iron with a few other elements that make the alloy Ferro-magnetic and having a low Remanence. Continue reading ->

Sep 4, 2019

Cable Handling

Twisting cables nearer to housing Magnet Sensor Cable Handling When using Reed Switches soldered to cables, or when using off the shelf Magnet Sensors with cables, some Continue reading ->

Sep 4, 2019

Reed Contact Protection Circuits

Inductive Load Protection Circuit It is assumed that the ideal reed switch load is a Resistive Load, but it is almost impossible to reduce any load to purely resistive. Continue reading ->

Aug 31, 2020

Applications

Although we can never restrict the use of a reed sensor to a particular field, the following is a list of some of the applications that the MS-212 Magnet Sensor is known to perform well.

Reed sensors for detecting Ignition Key

key ignition Automobile Key The Ignition key on an automobile comes in two types, a manual key or a start button as is the case in the newer Continue reading ->

Nov 7, 2020

Reed Sensors in Pediatric Feeding tubes

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Nov 6, 2020

Reed Sensors in Hotel Security Card Readers

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Nov 18, 2020

Reed sensors in Automobile Sun Visors

Automobile Sun Visor Automobile Sun Visor Automobiles are fitted with visors that can be swiveled downwards and outwards to block the sun from the driver or Continue reading ->

Nov 7, 2020

Reed switches in Lightsabers

Light Saber Light Sabers are weapons used by the Jedi and the Sith, in the fictional Star Wars Universe, set in a galaxy far, far, Continue reading ->

Nov 7, 2020

Reed sensors to control Automobile Sun-roofs

automotive sunroof Automobile Sun Roof An automotive sun-roof, usually made of tinted glass, is a movable panel that can be opened or closed, fully or Continue reading ->

Nov 7, 2020

Magnet sensors in Musical Greeting Cards

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Nov 7, 2020

Reed sensors in Radio-controlled Gliders and model Airplanes

Reed switches in model airplanes Model Airplane Radio controlled aircrafts, gliders and helicopters come in various sizes from simple ones with few controls to more Continue reading ->

Nov 7, 2020

Reed switches and Reed sensors in Lap counter in slot car racing tracks

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Nov 7, 2020

Reed switches and Reed sensors in Spirometers

Spirometer Spirometer for Lung Function Testing A Lung function test or Pulmonary Function test, PFT for short, is a system to evaluate the Continue reading ->

Nov 6, 2020

Miniature Reed sensors in activating Dentist’s Drill

Dentist Drill Denstist's Drill A dental drill or hand-piece is a hand-held, mechanical instrument used to perform a variety of common dental Continue reading ->

Nov 6, 2020

MS-212 Ultra-miniature Magnet Sensor
MS-212 Ultra-miniature Cylindrical Sensor: 2.6 mm diameter, 10W, omnipolar, suitable for low level switching, complete data sheet and technical specifications.
Brand: RRE
Manufacturer: Reed Relays and Electronics
Model: MS-212
4.2 based on 6 reviews