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AC LVDT Position Sensor Heavy Duty LA-25-R Series

For use in:
Steel, Aluminum, and Paper Mills
Industrial Fluid Power Systems
Steam and Hydro Power Plants
Factory Automation Systems
AC LVDT Position Sensor Heavy Duty LA-25-R Series
LA-25-R Series
LVDT Linear Position Sensors
Designed Specifically for Power Generation and Harsh Industrial Environments

Alliance Sensors Group’s LA-25-R series of AC-LVDT linear position sensors have been designed for use in steel, aluminum, and paper mills; fluid power systems; and steam or hydro power plants. These heavy duty sensors use a thick wall aluminum housing (stainless steel available) with an open bore and radial terminations that include a cable in a cord grip, a heavy duty industrial connector, or an optional high temperature connector, with which the LA-25-R is a natural choice as a heavy duty replacement for older through-bore LVDTs with a radial connector found in some steam power plants for valve position.
The core of the LA-25-R is enclosed in a 3/8 inch diameter stainless steel connecting rod assembly from which it can never break loose, and which has a male threaded end for connection to a user’s workpiece or many optional end pieces available from ASG. Because it has an open bore, an LA-25-R has no shaft seal around the operating rod, but it still has an internal stop for the fully retracted core rod to facilitate mechanical setup.
The LA-25-R series LVDT are ideal for roller gap measurement, head box feedback, control valve shaft position, and hydraulic actuator position feedback. They have the ruggedness to withstand the harsh environments in steam power plants; paper, steel, and aluminum mills; industrial fluid power systems; and hydroelectric plants, and can survive industrial wash downs and equipment cleaning operations. Mated with an Alliance Sensors’ model SC-100 DIN-rail-mounting LVDT signal conditioner, an LA-25-R LVDT based system becomes an ideal solution for almost any heavy industrial position measuring applications. For power plant applications, an ASG model S1A is the recommended DIN-rail-mounting LVDT signal conditioner to use with an LA-25-R series LVDT.


Features
  • Stock ranges from 3 inches to 15 inches (75 mm to 375 mm) Full Scale
  • Works in 3-wire, 4-wire, 5-wire, 6-wire, and ratiometric (A-B/A+B) systems
  • 5/16-24 or 8 mm male threaded shaft end
  • Core totally enclosed in 3/8 inch (9.5 mm) diameter core extension rod
  • Open bore for easy cleanout
  • Continuous operation to 250 °F (120 C)
  • Environmentally sealed to IEC IP-68
Options
  • Stainless steel body
  • Alternate termination connectors, including one for 350 °F (175 C) operation
  • Mild radiation resistant version for nuclear power plants (30 Mrads for 40 years)
  • Mounting hardware including flanges, single hole mounting kits, swivel rod eye ends, ball joints, extension rods, holddown clamps, and tie bars for dual-mounted LVDTs
Specifications
Available FS Ranges: 0 to 3, 6, 9, 12, or 15 inches (0 to 75, 150, 225, 300, or 375 mm)
Excitation Frequency: 3 kHz nominal
Excitation Voltage: 3 V ACrms nominal
Full Scale Output: 0.9 V ACrms output (nom.) from differentially connected (S1-S2) secondaries (ref: 3 Vrms excitation); sum of secondaries output is constant over range for ratio- metric (S1-S2)/(S1+S2) operation
Linearity Error: ≤±0.3% of FSO
Operating Temperature: -40 to 120 C (-40 to 250 °F)
Temperature Coefficient: ≤ 0.025% FSO/degree C
Humidity: 95% RH non-condensing
Shock: 1000 g, 11 msec
Vibration: 5-20 Hz, 0.5 inch p-p; 20-2000 Hz, 4.2 g p-p
Ordering Information

Series

Range inches

Termination

LA-25-R-

XX-

XX-

 

03 - 3”

00- cord grip with 1 m cable

 

06 - 6”

03- 6-pin Turck minifast connector

 

09 - 9”

 

 

12 - 12”

 

 

15 - 15”

 

 


Configuration Information

LA-25-R-XX Configurations

LA-25-R-XX

-03

-06

-09

-12

-15

Dim ‘L’

8.12”L

11.87”L

14.87”L

18.87”L

22.87”L

 


AC LVDT Position Sensor Heavy Duty LA-25-R Series
All dimensions and specifications are nominal. With our policy of on-going development and design improvements, specifications may change without notice. Modifications may affect some or all of the mechanical electrical and or performance specifications of our product. Please make sure to contact us for the most up to date information.
Download AC LVDT Position Sensor LA-25-R Datasheet
Download Termination Codes
Download AC LVDT Position Sensor LA-25-R Outline Drawing

Our Technical Support Staff:  We have more than 150 years and three generations in the position sensor business and are expert application engineers at what we sell. We have real world experience and know how to solve your measurement challenges. Need technical help with your measurement application? Call us today 856-727-0250. 

Our Web Site: We are constantly improving our website and adding new sensors to our product offerings.

 

Authorized 

Distributors For:

HGSI Temperature Sensing Products

Temperature Sensing Products

Have a Question?

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