CTC DD100970 FFV Proximity Probe Driver

The DD100970 Series is an eddy current probe driver designed for FFV proximity probe systems that require a robust 4–20 mA current loop output. In this configuration, the 4–20 mA loop supplies power to the driver while providing a current signal proportional to dynamic displacement, enabling direct connection into PLC/DCS analog input channels for continuous trending, alarms, and condition monitoring of rotating equipment.

For setup and verification, the DD100970 also includes an isolated voltage output available at both a BNC connector and the terminal block (Vout / Com), supporting commissioning without disrupting loop wiring practices. The unit is upgraded with a SecureLock probe connector for improved connection retention in vibration-prone environments, uses a rugged aluminum enclosure, and operates from a negative DC input range of -17.5 to -30 VDC. It supports a linear range of 10–70 mils (0.25–1.78 mm) and nominal sensitivity of -200 mV/mil (-7.87 V/mm); note that current is specified as 180° out of phase for the 4–20 mA driver.

SKU DD100970 Category

Key Features of the DD100970 Series

  1. 4–20 mA Output Proportional to Dynamic Displacement

    • Provides loop-powered current output for dynamic displacement measurement, ideal for standard industrial analog input integration.
  2. Loop-Powered Architecture for Simplified Wiring

    • The same current loop powers the driver and transmits the signal, supporting robust, noise-tolerant transmission across typical plant wiring runs.
  3. Isolated Voltage Output for Commissioning Access

    • Isolated voltage output is available at both BNC and terminal block (Vout / Com) for verification, troubleshooting, and supplemental monitoring.
  4. SecureLock Probe Connector Upgrade

    • SecureLock connector improves retention and serviceability in high-vibration monitoring applications.
  5. FFV Measurement Range Support

    • Supports a 10–70 mils (0.25–1.78 mm) linear range with defined nominal scaling for consistent channel behavior.
  6. Industrial Aluminum Enclosure

    • Aluminum housing supports durable installation in monitoring panels, machinery skids, and protective enclosures.

Technical Specifications for the DD100970 Series

ParameterSpecification
Model / SeriesDD100970 Series
Device TypeFFV proximity probe driver for eddy current probe
Output (Primary)4–20 mA current loop
4–20 mA Output Proportional ToDynamic displacement
Phase NoteCurrent is 180° out of phase for 4–20 mA driver
Voltage OutputIsolated voltage output (standard)
Voltage Output ConnectionsBNC and terminal block (Vout, Com)
Probe ConnectorSecureLock
Power & Output Connector4-position terminal block & BNC
Input Voltage-17.5 to -30 VDC
Linear Range10–70 mils (0.25–1.78 mm)
Nominal Sensitivity-200 mV/mil (-7.87 V/mm)
Temperature Range-49 to 185°F (-45 to 85°C)
Enclosure MaterialAluminum
Approx. Footprint2.38 in (60.3 mm) × 2.00 in (50.8 mm) (per drawing)
Approx. Height3.36 in (85.3 mm); max shown 3.59 in (91.3 mm)
Mounting Holes4 × Ø0.18 in (Ø4.5 mm)
Supply StatusBuilt to order

Suitable Applications for the DD100970 Series

The DD100970 is well-suited to rotating equipment monitoring systems that need a dynamic displacement signal delivered as a robust 4–20 mA current loop for direct control-system integration, while maintaining voltage output access for commissioning and validation.

  • Dynamic displacement monitoring into PLC/DCS analog input channels
  • Condition monitoring of pumps, compressors, turbines, and motors in critical service
  • Long cable runs where current-loop signaling improves noise immunity
  • Monitoring panel retrofits standardizing on 4–20 mA machinery signals
  • Skid-mounted rotating equipment packages requiring simplified loop wiring
  • Commissioning and troubleshooting using BNC/Vout outputs
  • Industrial environments where SecureLock connectors reduce maintenance events
 
 
 
 
 

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