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    • GUI Software for SC-100
    • GUI Software for S1A

Corporate Info

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  • News Articles
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    • True Cost of Ownership - parts 1, 2, and 3
    • LVIT Technology Factory Automation
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    • Industrial Trends
    • Position Sensor Technology Comparison for hydraulic cylinder feedback
    • Bridge Monitoring Systems
    • GE Position Sensors on Power Gen Turbines
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    • LVIT Technology™ Solves the Age Old Problem- Reliability vs Cost
    • S1A Used to Solve Multi-channel LVDT Measurement System Susceptibly
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LVDT Signal Conditioner DIN Rail Mounted S1A Series SUPERCEDED BY S2A

For use in:
Steam Valve Position Feedback
Governor and Throttle Valves
Interceptor and Stop Valves
Boiler Feedwater Pumps
Turbine Control Systems
LVDT Signal Conditioner DIN Rail Mounted S1A Series SUPERCEDED BY S2A
S1A
LVDT Signal Conditioner
Advanced Smart AC-LVDT Signal Conditioner Module

The S1A DIN-rail-mounting smart LVDT Signal Conditioner module from Alliance Sensors Group ends the difficulties that accompany AC-LVDT setup with built-in null indicators and front panel pushbuttons to set zero and full scale output. Engineered to work with the widest range of AC-LVDTs and inductive half-bridge LVRTs, the S1A module offers a choice of 4 excitation frequencies and 8 analog outputs, operates LVDT sensors with over a 40 dB dynamic range of AC output, indicates most common system failures, and incorporates a 2-wire RS-485 digital communications port. Along with color-coded plug-in screw terminal connectors and a 2 year warranty, these are just a few of the many advanced features that make Alliance Sensors Group’s S1A module a truly superior smart LVDT signal conditioner.


Features
  • Smart setup with front panel push buttons --- no pots, no calculations
  • Built-in null indication --- front panel LEDs and DC null voltage output
  • Auto-mastering provides fail-safe excitation syncing for multiple units
  • Self-diagnostics for LVDT failure or disconnect; open-collector output
  • Half-duplex digital communications via RS-485 2-wire multi-drop bus
  • Hot swapability --- setup can be saved and reloaded via RS-485 port
Options
  • USB to RS485 cable
Specifications
Operating Power: +15 to +30 V DC (+24 V nominal), 60 mA max. at 24 V DC; +15 V DC and -15 V DC needed for ±10 V DC bipolar output
Excitation Voltage: 3.0 Vrms (nominal) push-pull drive (factory default) 4.5 Vrms (nominal) push-pull drive (via jumper change) 1.5 Vrms (nom) single ended drive (for low impedance primary)
Excitation Frequencies: 1 kHz, 3 kHz, 5 kHz, 10 kHz (nominal)
Auto-Master Syncing: Master output couples up to fifteen slave units; if master fails, new master is automatically generated for fail-safe excitation
LVDT AC Output Range: 50 mVrms to 5000 mVrms at LVDT ís full scale position
Analog DC Outputs: 0 - 5 V, 1 - 5 V, 0.5 - 4.5 V, 0.5 - 9.5 V, 0 -10 V, -10 to +10 V, 0 -20 mA sourcing, 4 -20 mA sourcing
Loop Resistance: 850 Ohms max. with 24 V DC supply
Output Non-Linearity: ±0.025% of Full Span Output (FSO)
-3 dB Response: 10% (minimum) of excitation frequency (normal setting); 10 Hz (default) user adjustable (low noise setting)
Noise and Ripple: ≤2.5 mVrms (voltage output); ≤5 μArms (current loop output)
Fault Detection: Open LVDT winding, cable disconnected, loss of excitation
Failure Indication: Flashing LED's; analog output out of range; open-collector switch
Null Detection: Front panel LEDs
Null Output Signal: Up to +/-3VDC
Operating Temperature: 0 to 75 C
Temperature coefficient: +/-0.002% of FSO/C (combined zero and span shift)
Zero Set: Front panel push button or RS-485 command
Full Scale Set: Front panel push button or RS-485 command
Digital Interface: RS-485 2-wire multi-drop network, 16 addresses
Configuration Information

LVDT Signal Conditioner DIN Rail Mounted S1A Series SUPERCEDED BY S2A
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 S1A LVDT Signal Conditioner Datasheet
S1A & SC-100 RS485 quick start
Download S1A LVDT Signal Conditioner Operating Manual
Downloadable GUI Software for S1A or SC-100

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.

 

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Distributors For:

HGSI Temperature Sensing Products

Temperature Sensing Products

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