Speed Sensor for Bulldozer Excavator Road Roller Crane

• Type: Magnetic Displacement Sensor
• Output Signal Type: Analog Type
• Movement: Angular Displacement
• Production Process: Integration
• Material: Stainless Steel
• IP Rating: IP65
• Model NO.: GVS Series
• Certification: CE
• Customized: Customized
• Transport Package: Carton
• Trademark: Yuanben
• Origin: Shanghai
• Production Capacity: 200, 000PCS/Year

Product Description

Speed Sensor For Bulldozer Excavator Road Roller Crane
Description
Shanghai Yuanben has 20 years experience in industrial sensor manufacturing. Produce and customize speed sensor: hall speed sensor, and magnetoelectric speed sensor, for a variety of speed detection and control applications.

GVS series hall speed sensor uses a magnetically biased Hall effect integrated circuit to accurately sense movement of ferrous metal targets. This specially designed I.C., with discrete capacitor and bias magnet, is sealed in a probe type package for physical protection and cost effective installation.
Output is digital, current sinking (open Collector). Reverse polarity protection is standard. If power is inadvertently wired backwards, the sensor will not be damaged.

MEVS speed sensor is basically a permanent magnet with wire wrapped around it. The internal construction of the speed sensor is a magnet, pole piece and coil. A magnetic field (lines of flux) extends from the magnet, through the pole piece and coil out into the air space at the end of the sensor. The return path of the magnetic field is from the air space to the other end of the magnet. As a ferrous toothed ring on the wheel passed the tip of the pole piece, the magnetic field increases and then decreases as the object moves away from the pole piece. The snap or the rapid change in the magnetic field induces an AC voltage signal in the coil. With an ideal target and matching sensor, the induced voltage is in the shape of a sine wave.
The frequency and amplitude of the AC voltage signal are proportional to the speed of the wheel. The amplitude of the wheel speed signal is also directly related to the distance between the wheel speed sensor coil and the toothed ring. The distance is referred to as the air gap. This gap is critical to ensure AC output at lower speeds.


Specifications

Product Type	Hall-Effect Gear Tooth Sensor
Probe Housing	Plastic Probe
Supply Voltage	4.5 Vdc to 24.0 Vdc
Supply Current (max. @ 25 °C)	20mA
Output Type	Square wave signal
Termination Type	Lead Wire
Operating Temperature Range	-40 °C to 150 °C [-40 °F to 302 °F]
Output Voltage	0.4 Vdc max.
Output Current (max.)	40 mA
Vane and Geartooth Target Material	Cold Rolled Steel, 1018 or Low in Carbon (Annealed)
Target RPM	10 RPM min., 3600 RPM max.
Switching Time Rise (10 % to 90 %)	15 µs max.
Switching Time Fall (90 % to 10 %)	1.0 µs max.
Operate Point	3.3 ° ± 1.25 ° [3,28 ° ± 1,13 mm]
Release Point	4.4 ° ± 2.50 ° [4,16 ° ± 2.21 mm]
Availability	Global

* Values measured using 1 kOhm pull-up resistor, millitesla (gauss x 10^-1), and geartooth target dimensions.

Item	Magnetoelectric Type
Voltage Output Min.	12.0V p-p
Coil Resistance	910~1200Ω
Pole Diameter	2.90mm
Surface Linear Speed Min.	10 m/s
Working Temperature	-55ºC ~ 120ºC
Mounting Thread	5/8-18 UNF-2A
Inductance	450mH (Max.)
Working Freqency Max.	15KHz (Typical)
Vibration Grade	Mil-Std 202F Method 204D
Wire Specification	20 AWG Teflon insulated Wire

Testing Condition:
 Gear: 60 teeth, φ186mm Air Gap: 0.5mm Load Impedance: 1.25K

Application: Bulldozer, crane, excavator, machine tool, conveyor belt, flowmeter measurement, transmission and wheel speed.

Model Selection

Model	Pole Diameter	Putout	Thread length	Cable length and Terminal	Mounting Thread	Sensor dimension
MEVS-300 series	¢3.3 Flush ¢3.2×1.65 ¢2.7×0.5 ¢3.3Flush Sealed	0-10 V NPN 0-5 V NPN 0-Vs, NPN 0-Vs, NPN open Collector 0-Vs, NPN/PNP	28 33	3pin MS 3106 3pin MS 3102 4pin Bayonet 6pin Bayonet	11/16"-24UNF
	¢3.3 Flush ¢3.2×1.65 ¢2.7×0.5 ¢3.3Flush Sealed	0-10 V NPN 0-5 V NPN 0-Vs, NPN 0-Vs, NPN open Collector 0-Vs, NPN/PNP	18 33	MS 3106 3pin MS 3102 3pin Micro-c 3pin Bayonet 4pin Bayonet 6pin	11/16"-24UNF
	¢3.3 Flush ¢3.2×1.65 ¢2.7×0.5 ¢3.3 Flush Sealed	0-10 V NPN 0-5 V NPN 0-Vs, NPN 0-Vs, NPN open collector 0-Vs, NPN/PNP	28 33	600 wire & conn. 1000 shield cable 2000 shield cable	11/16"-24UNF
	¢3.3 Flush ¢3.2×1.65 ¢2.7×0.5 ¢3.3 Flush sealed	0-10 V NPN 0-5 V NPN 0-Vs, NPN 0-Vs, NPN open collector 0-Vs, NPN/PNP	28 33	600 single lead 1000 shield cable 2000 shield cable	11/16"-24UNF +1/2-14 NPT

Photos