Voltage Magnetic Proximity Sensors
Last Updated: April 1, 2025
Description
Voltage Magnetic Proximity Sensors are devices designed to detect the presence of a magnetic field. They operate by sensing changes in the magnetic field around them, which allows them to determine the proximity of a magnetic object. These sensors are typically used to provide a signal or output when a magnetic target is within a certain range.
Working Principle
Magnetic proximity sensors work by utilizing an external magnetic field to detect a target. A typical sensor consists of two ferromagnetic reeds or contact blades that are sealed within a glass casing filled with inert gas. When a magnetic target, such as a permanent magnet, approaches the sensor, the magnetic field causes the contact ends of the reeds to attract each other and make contact. This action closes the circuit and generates a signal. These sensors are particularly useful because they can detect ferromagnetic targets without requiring physical contact, making them ideal for applications where non-contact detection is necessary.
Applications
Magnetic proximity sensors are commonly used in security alarm systems to detect the opening of doors. When a door equipped with a magnetic sensor is opened, the sensor detects the change in the magnetic field and triggers an alarm. They are also used in various industrial applications where detecting the presence or absence of a magnetic object is crucial.
Advantages over other Magnetic Proximity Sensors
One of the key advantages of voltage magnetic proximity sensors is their ability to operate without physical contact, which reduces wear and tear and extends the lifespan of the sensor. Additionally, the glass tube encasing of these sensors provides protection from corrosion, making them suitable for use in harsh environments.
Limitations
A limitation of magnetic proximity sensors is that they are primarily effective for detecting ferromagnetic materials. This means they may not be suitable for applications requiring the detection of non-magnetic materials. Additionally, their performance can be affected by the presence of strong external magnetic fields, which may interfere with their operation.
Considerations
When considering the use of voltage magnetic proximity sensors, it is important to evaluate the initial costs, which can vary depending on the specific type and features of the sensor. Operating expenses are generally low due to their non-contact nature, which minimizes maintenance requirements. However, the accuracy of these sensors can be influenced by environmental factors, so it is crucial to ensure they are installed in appropriate conditions. Durability is enhanced by their corrosion-resistant design, but regular checks and maintenance are recommended to ensure optimal performance. Replacement and maintenance costs are typically low, but these should be factored into the overall cost of ownership.
from Kaman Measuring & Memory LLC dba KMM Precision Measuring
Kaman's Advanced Magnetic Sensing (AMS, AMS-HP, and AMS-XHP) precision non-contact measuring systems designed to detect magnetic materials through non-magnetic barriersDetect target position through non-magnetic, conductive, and non-conductive barriersRMS resolution down to 1 micronStandard... [See More]
- Electrical Output: Voltage
- Power Requirements: DC Powered
- Operation Distance: 0.0 to 0.2756
- Body Shape: Cylindrical; Threaded Barrel
from Fargo Controls, Inc.
Magnetic sensors are actuated by the presence of a permanent magnet. Their operating principle is based on the use of reed contacts, which consist of two low reluctance ferro-magnetic reeds enclosed in glass bulbs containing inert gas. The reciprocal attraction of both reeds in the presence of a... [See More]
- Electrical Output: Voltage; Current
- Switching Frequency: 0.2300
- Operation Distance: 0.3150
- Operating Temperature: -13 to 212
from RS Components, Ltd.
Magnetic Field Sensor, DRV425RTJT [See More]
- Electrical Output: Voltage; Current
from Micro-Epsilon Group
The sensors of the MDS-40-MK series are the new generation of cost-effective and flexible magneto-inductive sensors. In addition to the pre-configured preferred types, a combination of further options (power supply, output, plug,...) for serial or industrial applications is possible. [See More]
- Electrical Output: Voltage
- Switching Frequency: 1
- Operation Distance: 0.0591 to 1.24
- Operating Temperature: -4 to 176
from DigiKey
Digital Switch Special Purpose Analog Voltage Magnetoresistive 8-MSOP [See More]
- Electrical Output: Voltage
- Operating Temperature: -40 to 302
from RS Components, Ltd.
Magnetic Field Sensor, DRV425RTJT [See More]
- Electrical Output: Voltage; Current
from Micro-Epsilon Group
MDS-40-D18-SA sensors are industrial-grade, magneto-inductive sensors with optimized price/performance ratio. These stand out due to the common characteristics of this product series and also because of their robust standard housing designed for clamp fastening. The stainless steel housing protected... [See More]
- Electrical Output: Voltage; Current
- Switching Frequency: 3
- Operation Distance: 1.5 to 31.5
- Operating Temperature: -4 to 176
from DigiKey
Digital Switch Special Purpose Analog Voltage Magnetoresistive 8-SOIC [See More]
- Electrical Output: Voltage
- Operating Temperature: -40 to 302
from Micro-Epsilon Group
Magneto-inductive M12 sensors are industrial-grade models for restricted installation spaces. Designed for use in harsh environments and high temperatures up to 120 C, these sensors are available either with connector or integrated cable. MDS-M12 sensors are ideally suitable for applications in... [See More]
- Electrical Output: Voltage
- Switching Frequency: 5
- Operation Distance: 0.0394 to 1.42
- Operating Temperature: -4 to 248
from DigiKey
SWITCH AMR MAGNETIC [See More]
- Electrical Output: Voltage
- Operating Temperature: -4 to 158
from Micro-Epsilon Group
Magneto-inductive M12 sensors are industrial-grade models for restricted installation spaces. Designed for use in harsh environments and high temperatures up to 120 C, these sensors are available either with connector or integrated cable. MDS-M12 sensors are ideally suitable for applications in... [See More]
- Electrical Output: Voltage
- Switching Frequency: 3
- Operation Distance: 5 to 50
- Operating Temperature: -4 to 176
from DigiKey
SWITCH AMR MAGNETIC [See More]
- Electrical Output: Voltage
- Operating Temperature: -40 to 185
from Micro-Epsilon Group
MDS-45 is the industry-standard version of the magneto-inductive sensor. These stand out due to the common characteristics of this product series and also because of their very robust standard housing. They are available in M18 and M30 stainless steel housings. The stainless steel housing is ideally... [See More]
- Electrical Output: Voltage
- Switching Frequency: 3
- Operation Distance: 0.0886 to 1.86
- Operating Temperature: -4 to 176
from DigiKey
SWITCH AMR MAGNETIC [See More]
- Electrical Output: Voltage
- Operating Temperature: -22 to 140
from Micro-Epsilon Group
MDS-45 is the industry-standard version of the magneto-inductive sensor. These stand out due to the common characteristics of this product series and also because of their very robust standard housing. They are available in M18 and M30 stainless steel housings. The stainless steel housing is ideally... [See More]
- Electrical Output: Voltage
- Switching Frequency: 3
- Operation Distance: 2.25 to 47.25
- Operating Temperature: -4 to 176
from DigiKey
OMNIPOLAR MAGNETIC ANALOG SENSOR [See More]
- Electrical Output: Voltage
- Operating Temperature: -40 to 257
from Micro-Epsilon Group
MDS-45 is the industry-standard version of the magneto-inductive sensor. These stand out due to the common characteristics of this product series and also because of their very robust standard housing. They are available in M18 and M30 stainless steel housings. The stainless steel housing is ideally... [See More]
- Electrical Output: Voltage; Current
- Switching Frequency: 1
- Operation Distance: 0.1575 to 1.93
- Operating Temperature: -4 to 176
from DigiKey
OMNIPOLAR MAGNETIC ANALOG SENSOR [See More]
- Electrical Output: Voltage
- Operating Temperature: -40 to 185
from OMEGA Engineering, Inc.
Non-contact linear sensors have an analog output that is proportional to the damping target distance. Their compact yet sturdy design makes them well-suited for industrial, robotics and laboratory use. These sensors utilize inductive technology, which means they are capable of sensing any metal... [See More]
- Electrical Output: Voltage
- Operating Temperature: 32 to 140
- Operation Distance: 0.0400 to 0.3900
- Power Requirements: DC Powered
from GIMATIC S.r.l.
Analog sensors [See More]
- Electrical Output: Voltage
- Body Shape: Rectangular
- Power Requirements: DC Powered
- Height: 0.7677
from Red Lion Controls, Inc.
Logic Magnetic Pickup. Detects Steel Sensing Gears or Other Ferrous Targets. Built-in Amplifier for Low-speed Operation. Stainless Steel Case. Epoxy Encapsulated For Oil, Dirt, & Moisture Resistance. 3-pin 5/8"-24 threaded connector. 9 to 30 VDC Powered [See More]
- Electrical Output: Voltage
- Diameter: 8
- Body Shape: Threaded Barrel
from CARLO GAVAZZI Automation Components
The SP.A.1.. magnetic sensors allow to use two different normally closed contacts: the first one has low power (5VA) and can be used as a signal contact; the second one has high power (100VA) and can be used to drive hard loads. The cable output (ended by a connector) may be 3x0.75 mm2, with the... [See More]
- Electrical Output: Voltage
- Operating Temperature: -13 to 176
- Operation Distance: 0.4724 to 3.03
- Power Requirements: DC Powered
from EMX Industries, Inc.
The MVP D-TEK ® Multi-Voltage Vehicle Detector makes it simple to manage your stock. You only need one detector in your stock room and on your truck. The MVP D-TEK ® solves the problem of not knowing which voltage to take for service call or an installation. Reduce the costs of inventory by... [See More]
- Electrical Output: Voltage; Current
- Power Requirements: AC Powered; DC Powered
- Operating Temperature: -40 to 180
- Body Shape: Rectangular
from Lion Precision
ECA100 is a high-precision eddy-current or inductive proximity switch with a nonlinear analog output. The analog output provides linear position sensor feedback while the precision repeatable switched output alerts operators and systems to conditions. User adjustable offset and gain. Vacuum... [See More]
- Electrical Output: Voltage; Switched / Alarm
- Operating Temperature: 39.2 to 122
- Operation Distance: 0.0020 to 0.6800
- Power Requirements: DC Powered
from GIMATIC S.r.l.
Analog sensors [See More]
- Electrical Output: Voltage
- Body Shape: Rectangular
- Power Requirements: DC Powered
- Height: 0.3346
from Red Lion Controls, Inc.
Logic Magnetic Pickup. Detects Steel Sensing Gears or Other Ferrous Targets. Built-in Amplifier for Low-speed Operation. Stainless Steel Case. Epoxy Encapsulated For Oil, Dirt, & Moisture Resistance. 10 foot 3-wire shielded cable. 9 to 30 VDC Powered [See More]
- Electrical Output: Voltage
from EMX Industries, Inc.
The Ultra V-2 D-TEK ™ Vehicle Loop Detector is compact, delivers the full-featured. functionality of the standard D-TEK product line, and has a second output. Housed in a plug-in module, the Ultra V-2 provides a solid-state output indicating vehicle presence. The second output can be used for... [See More]
- Electrical Output: Voltage; Current
- Power Requirements: AC Powered; DC Powered
- Operating Temperature: -40 to 180
- Body Shape: Rectangular
from EMX Industries, Inc.
The ULTRALOOP ™ Series Vehicle Loop Detectors combine small size with full-featured functionality in a DIN rail mount module. The ULTRALOOP ULT-DIN loop detector model has our new DETECT-ON-STOP ™ or (DOS) feature, which allows detection only when a vehicle has come to a complete stop on... [See More]
- Electrical Output: Voltage; Current
- Power Requirements: AC Powered; DC Powered
- Operating Temperature: -40 to 180
- Body Shape: Rectangular
from EMX Industries, Inc.
EMX ’s new stand alone proximity reader is appropriate for use on gates or doors where there is need for resistance to climactic conditions. Benefits include: Supports up to 2000 users. Low energy consumption. Can be used on solar installations. Option of using a built-in contact for doorbell... [See More]
- Electrical Output: Voltage; Current
- Power Requirements: DC Powered
- Operation Distance: 5
- Body Shape: Rectangular