Series 50 & 52 BH Pickups
  

Series 50 & 52BH Pickups

 50_52BH
  Dynapar Brand Logo
 

Quick Specs...

  • Speed Range: typically 50 RPM min. to 4000 RPM max.
  • Sine wave output
  • Passive, no external power source required
  • Compact 3/8" & 5/8" diameter packages
  • Rugged, mill-duty construction


Buy Online

Printer-friendly Version

Dimensional Diagrams

 

Overview Industry/Application Specifications Related Info  

Overview / Design Principle:

These variable reluctance, magnetic sensors are the simplest, most economical form of speed sensing. Motion and speed are sensed without mechanical couplings, bearings, linkages or an external power source. A sine wave alternating voltage signal is generated synchronously in the presence of gear teeth made of carbon steel, magnetic stainless steel, or iron (ferrous metal). Output voltage and frequency start at zero with zero target speed, and both increase with the increasing speed of a passing target.

Features and Benefits:

Advantages of magnetic pickups include

  • Ability to generate a wide range of error-free speed signals
  • Moderately priced
  • Reliable operation with little protection required
  • Good for wet, dirty, high temperature environments
  • Many industrial, military, and commercial applications.

The Dynapar Advantage:

  • Innovative, high quality leading edge technology encoder products
  • Broad commercial - industrial grade product line
  • Fast 3 Day Delivery and customized built to order solutions available
  • Global Manufacturing & Service Support
  • Fast-Friendly Customer Service & Technical Support with Multi-Lingual Capabilities
  • Global Network of Authorized Resellers
  • Competitive Product Warranty:  2 Years  

Applications:

Typically used in conjunction with a variety of instruments for indicating or controlling speed, flow rate, etc.

Standard Operating Characteristics
Operating Temperature: 0° to 170°F
Recommended Gap: 0.005 inch
Output: Greater than 0.5 volt peak (2K ohm load) above 3 in./sec.
Cable Length: Maximum recommended cable lengths is 100 feet, but can be extended to 300 feet with minimum speeds above 300 RPM. Line amplifiers are available for longer line lengths. Consult factory.
DC Resistance: 500 to 650 ohms

Electrical Connections
Function
Series 50
Wire Color Code
Series 52BH
Pin No.
Dyn. #14002030010* Cable
Acc'y Color Code
Signal Out
WHT
A
RED
Common
BLK
B
BLK

Note: Wire with 2-conductor shielded cable, such as Belden 8737 should be insulated at sensor and grounded at the instrument.

* This is a cable assembly described in the Encoder Accessories section of this catalog. (A mating connector is also available.) Color-coding information is provided here for reference.


Recommended Dynapar-brand Gears
Gear
Dia.
Bore
Pitch
PPR
50
52BH
16002070081
3-1/10"
3/8"
20
60
X
16002070083
3-7/8"
1/2"
16
60
X
16002070216
5-1/2"
1-1/8"
11
60
X
X
16002070217
5-1/2"
1-3/8"
11
60
X
X
16002070218
5-1/2"
1-5/8"
11
60
X
X
16002600314
5-1/2"
1-7/8"
11
60
X
X
16002600315
5-1/2"
2"
11
60
X
X
16002600316
5-1/2"
2-1/8"
11
60
X
X
16002603317
5-1/2"
2-1/4"
11
60
X
X
16002603318
5-1/2"
2-3/8"
11
60
X
X
16002600319
5-1/2"
2-1/2"
11
60
X
X
16002600320
5-1/2"
2-7/8"
11
60
X
X

50_52BH_diagrams

Application Guidelines

Characteristics required for proper selection and application of variable reluctance sensors include:

  1. Target speeds of interest must be greater than approximately 180 in./min. (60 tooth gear operation: 50 to 4000 RPM), and will generate operational voltage levels typically 0.5 to 2 volts peak-to-peak.
  2. Minimum target length and width dimensions should be greater than and centered on the diameter of the pole tip.
  3. Target spacing must be at least three times the length of the target.
  4. The gap between the target and the tip of the pickups pole should be as small as possible (output voltage is optimized at a gap of 0.005").

For more application information, refer to the "Fundamentals for Applying Magnetic Pickups" discussion in the Application Reference section of this catalog.

Available Specifications:

Related Products & Resources: