MS-212 Ultra-miniature Cylindrical Sensor
Features
10W Contact Rating. Normally Open contact. Two sensitivity bands. Sputtered Ruthenium Contact.
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
 | 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
 | 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 Form | A | |
| Contact Rating (max) | W/VA | 10.0 |
| Switching Current (max) | A | 0.5 |
| Carry Current (max) | A | 0.50 |
| DC Switching Voltage (max) | VDC | 100 |
| Breakdown Voltage (min) | VDC | 150 |
| Contact Resistance (max) | mΩ | 200 |
| Insulation Resistance (min) | Ω | 109 |
| Capacitance (typ) | pF | 0.2 |
Miscellaneous
| Operate Time (max) | ms | 0.35 |
| Bounce Time (max) | ms | 0.30 |
| Release Time (max) | ms | 0.15 |
| Resonance Frequency (typ) | Hz | >2000 |
| Operating Frequency (max) | Hz | 500 |
| Operating Temperature Range | °C | -40 to +140 |
| Shock Resistance (½Sin wave for 11ms) | G | 30 |
| Vibration Resistance (10-2000 Hz) | G | 20 |
Ordering Code
MS-212-(Operate Band Code)-(Cable Length in mm)-(Cable Termination Code)
| Operate Band Code | ||
| 1 | AT | 10-15 |
| 2 | AT | 15-20 |
| Cable Termination Code | Termination Type |
| S | Stripped to 5.0 mm |
| T | Stripped 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
 | 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
 | 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
 | 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
 | 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
 | 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
 | 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
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Reed Sensors in Pediatric Feeding tubes
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Reed Sensors in Hotel Security Card Readers
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Reed sensors in Automobile Sun Visors
 | 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
 | 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
 | Greeting Card Even in the digital age of Smart phones, people do like to mail out or hand over greeting cards taped to gifts, to Continue reading Nov 7, 2020 |
Reed sensors in Radio-controlled Gliders and 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
 | Slot Car Racing Slot car racing (also called slot racing) is a competitive hobby of racing with powered miniature autos which are Continue reading Nov 7, 2020 |
Reed switches and Reed sensors in Spirometers
 | 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
 | 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 |