870 Series
Provides fast, reliable detection of ferrous metals through all non-ferrous materials with high precision.
The 870 Series Ferrous Metal Proximity Sensors deliver highly precise, localized detection of ferrous metals through non-ferrous materials like aluminum, air, or water. It has the largest available sensing distance of 0.45 to 3.4 inches for standard ferrous targets.
Output options include analog-only voltage or a combination of digital and analog signals, allowing for versatile integration into various systems.
Our 870 Series comes in standard in our anodized aluminum A12 housing.
Features
True Zero Speed
No moving parts to fail
3.4"
Large Detection Gap
Ideal detection gap of 0.45 - 2.6 inches
Internal Hysteresis
False trigger immunity for signal integrity
Durable
Vibration, corrosion, and mechanical shock tested
Supply Voltage
Operates between 7 - 30 Volts DC
Voltage output range
Produces 1 - 12 Volt DC Output
Detects through non-ferrous materials
Easy detection through aluminum, titanium and other non-ferrous meterials
High-temperature resilliance
0 to 70 - degree C operational range
Electrical Options
Analog Only
Our Analog Output sensors generate a baseline voltage of 1 V in the absence of a ferrous metal target. As a target approaches the sensor face, the output voltage increases proportionally. The magnitude of this increase is dependent on both the size of the target and its proximity to the sensing face—larger and closer targets yield higher output voltages.
Analog Sensing Range:
0.45 - 3.4 Inches
Ideal Sensing Range:
0.50 - 2.6 Inches
Looking for a different gap?
Our second smallest analog sensors provide detection over the distance of – .13″ to 1.8″ from a large steel plate – offering more precise detection of a target with other ferrous metals nearby while still offering an intermediate gap detection length.
Analog and Digital
Our Digital Output Sensors feature an additional discrete switched-transistor digital output. When a ferrous target approaches the sensor face and exceeds a defined threshold, the digital output changes state. This trigger point is user-adjustable across a configurable detection range, allowing for application-specific sensitivity tuning.
Standard Trigger Distance:
1.40 Inches
Looking for a different gap?
Digital Options:
Our digital output sensors have an additional option of an NPN or PNP output.
NPN (3K pull-up resistor)
Our NPN digital output starts HIGH- approximately 11.8 Volts DC at a supply voltage of 12 Volts - with no target present. At a gap of 1.40 inches, the discrete digital signal switches LOW - approximately 1 volt. Our part numbers refer to this option as "3K".
PNP (Open Collector)
Our open-collector PNP digital output starts LOW- approximately 11.8 Volts DC at a supply voltage of 12 Volts - with no target present, mirroring the analog output. At a gap of 1.40 inches, the discrete digital signal switches HIGH - approximately 1 volt, the opposite of the NPN version. Our part numbers refer to this option as "PO".
Standard Housing
A12 Housing
750 Series comes standard in a larger, anodized aluminum housing.
Al
Anodized Aluminum
Enclosure
NEMA, 1,3,4,6 &IEC IP67
35ft-lbs
Max installation torque
Vibration
10 G's 2 to 2K Hz Sinusoidal
Corrosion Resistance
500 hours salt spray ASTM B-117
0.45" - 3.4"
Max sensing range
Mechanical Shock
100 G's, 11mS Half-Sine
Learn more:
870
Specs
See more specs here:
Series
870
Brand
MagneTech Solutions
Approximate weight
80 grams
Country of Manufacture
United States
Average lead time
5-7 business days
Output options
Analog only, Digital and Analog *(NPN, PNP)
Voltage output
1V - 11.8 V (VCC = 12)
Supply Voltage
7.0 - 30.0 VDC
Detection gap (max limit)
0.45" to 3.40"
Ideal detection gap
0.50" to 2.60"
*Digital Trigger Gap
* 1.40"
Housing options
A12, Custom
Connector options
CB1, Custom
*Current into digital output
* 150.00 mA
Temperature Range
0.0 - 70.0 Degrees Celsius
Frequency Range
0.0 - 6.0 kHz
*
Applies to Digital option only
Shop 870 Series Now
Discover the power of precision with our ferrous metal proximity sensors. Whether you're ready to order or exploring a custom solution, our engineering team offers free consultations, rapid prototype development, and industry-leading 5–7 business day lead times. Every sensor is built with scalability in mind—perfect for one-off projects or full-scale production.
Contact us today to schedule a meeting or get started with your order.
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Address
9200 E. Mineral Ave.
Centennial, CO 80112
Phone
+1 (720) - 319-8788