953 VMAX LDT
The Need for automation is greater today than ever before.
*** Call, email or live chat today with any questions or to place an order! ***
Linear Displacement Transducers (LDT) play an important role in factory automation. They provide accurate,
reliable, absolute position feedback to help automate today’s sophisticated machinery. Sensors must deliver value,
be easy to set up, and interface easily into the host controller.
We know the manufacturing challenges of today are extreme, so we designed and built a sensor to meet and
exceed these demands, regardless of the application or environment. Innovation, proprietary technology and
decades of experience were the key to the development of our 953 VMAX Linear Displacement Transducer.
The 953A VMAX is an accurate, programmable zero & span, auto-tuning, non-contact linear displacement
transducer in a rod-style package. The transducer utilizes our field-proven Magnetostrictive technology to give
absolute position, accurate to 0.01% of the programmable sensing distance. A variety of different outputs are
available, including Analog (Voltage or Current), Digital (Start/Stop or PWM) and SSI (Serial Synchronous Interface).
The 953 VMAX has a variety of truly unique features. The first one is the wide power range of 7 to 30 VDC @ 1
watt. The second is the LDT’s auto-tuning capability, the ability to sense a magnet other than the standard ring
magnet and adjust its signal strength accordingly. All units have a diagnostic LED to display the health of the unit
and to help aid in troubleshooting. Our Analog units offer programmable Zero & Span points, the analog output
is programmable over the entire active stroke length. Units can be ordered in span lengths from 25mm to 7.6M in
1mm increments.
Introducing the 953 VMAX LDT features:
- High Vibration Resistance to 30 Gs (lab tested)
- High Shock Resistance to 1000 Gs (lab tested)
- Wide Input Power Range of 7 to 30 VDC - (no need to specify different models for mobile applications)
- Very Low Power Consumption, 1 Watt Typical, Allows Direct Connection to Display and Control Interface
Modules
- Applications Include All Mobile/Stationary Equipment, or both with the Same Sensor
• High Accuracy with High Resolution – Resolutions to 1 micron
- Sensor Lengths from 1” to 300” (25mm to 7.6M)
• Durability and Reliability Exceeds Competitive Offerings
- Tri-Color Diagnostic LED Indicator, Gives Quick Indication on the Status of the LDT
• Removable Cartridge for Hydraulic Applications
- SSI (Synchronous Serial Interface), 24, 25 or 26 Bit, Binary or Gray Code, Position Updates
- Analog Output, 0-10 VDC, +/-10 VDC, 0-5 VDC, +/-5 VDC, 4-20mA
• Digital Output, Start/Stop, Variable Pulse (PWM), Control Pulse
- Multi-Magnet Option (Digital Start/Stop only)
- Contaminant Resistant - IP68 Rated
• Optional Stainless Steel Cover and Connector
- Drop-in replacement for competitive model units – same Null, Dead bands, threads and connectors
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Specifications for 953A, 953D, and 953SSI VMAX LDTs
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953SSI
Connector
Interface
953D
Connector
Interface
953A
Connector
Interface
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6 Pin 12mm Euro micro, Standard.
Integral cable ass'y, 7 Pin or 8 Pin DIN - Optional
6 Pin 12mm Euro micro, Standard.
Integral cable ass'y, 6 Pin or 8 Pin DIN or 10 Pin
MS- Optional
5 Pin 12mm Euro micro, Standard
Integral cable ass'y, 6 Pin or 8 Pin DIN or 10 Pin
MS- Optional
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Sensor Housing
and Mounting
Hex
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Body length 3.2”, hex base 1 3/4” dia., 3/4”x16x1” thread.
Aluminum housing standard, stainless steel optional.
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Displacement
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1” to 300"
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Dead Band
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2.50" (63.5 mm) standard, (2.25” Minimum)
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Null Zone
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2.00" (50.8 mm) standard, (1.5” Minimum)
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Enclosure Rating
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IP68, IEC 600529
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953SSI
Resolution
953D
Resolution
953A
Resolution
Internal
Output
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English or Metric Units
Metric: 1, 5, 10, 20 micron (5 micron standard)
English: .00005", .0001", .0005", .001"
Consult Factory for Others.
Controller Dependant
0.00006”
16-Bit
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Shock
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1000 Gs (lab tested)
IEC 60068-2-27
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Vibration
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30 Gs (lab tested)
IEC 60068-2-6
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Guide Tube Pressure
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5,000 psi continuous
(10,000 psi spike)
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Approvals
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CE (EMC)
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Input Voltage
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7 to 30 VDC
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Current Draw
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1 watt typical*, 40mA at 24 VDC typica
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953A Zero & Span
Adjustability
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Factory set at Null & Dead Band locations
Field re-settable at any location within active stroke
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953D Repeatability
953A Repeatability
953SSI Repeatability
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Equal to Resolution of Controller
Equal to Resolution
Equal to Output Resolution
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953SSI Measured
Variables
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Single Magnet Displacement, Consult Factory for
Velocity or Differential Operation
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953SSI Output
953D Output
953A Output
Voltage
Current
953A Current Output
953A Voltage Output
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24, 25 or 26 Bit, Binary or Gray Code
(optional parity and error bit),
Position Update
RS = RS422 Start/Stop Pulse
VP = RS422 Variable Pulse (PWM),
Internal/External Interrogation
CP = RS422 Control Pulse
TP = TTL Start/Stop Pulse
0-10 VDC, +/-10 VDC, 0-5 VDC, +/-5 VDC
4-20mA
Max Load Resistance: 500 Ohms
Minimum Load Resistance: 2K Ohm
Output Current: Guaranteed 5mA minimum
Analog Ripple: ≤1 mV maximum
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| Hysteresis
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0.001”
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| Non-linearity
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< 0.01% or +/- 0.005”, whichever is greater,
(+/- 0.002 Typical)
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| Storage Temperature
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e -40° to 221° F
(-40° to 105° C)
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Operating
Temperature:
Head
Guide Tube
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-40° to 185° F (-40° to 85° C)
-40° to 221° F (-40° to 105° C)
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| Diagnostics
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Tri-Color LED beside connector/cable exit
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NOTE: Specifications subject to change and are based on a typical 48” stroke.
*One watt typical at 1ms interrogation time with no recirculations. Faster interrogation times and/or recirculations increase power consumption.
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 Download the Model 953 VMAX LDT brochure in *.pdf format.
*** Call, email or live chat today with any questions or to place an order! ***
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