The intelligent transmitter (iT) series from Wilcoxon is a complete family of 4-20 mA units providing signal conditioning for simplified online vibration monitoring. The iT series lowers the total cost of condition monitoring and predictive maintenance programs deployed by industrial, commercial and municipal facilities.

Each transmitter is custom-designed for individual applications. High- and low-pass filters can also be selected by the user. iT transmitters support accelerometers and piezovelocity transducers and can be configured to output 4-20 mA signal proportional to acceleration, velocity or displacement. The 4-20 mA output can be sent directly to the facility’s existing PLC or DCS for cost-effective continuous vibration monitoring.

iT vibration transmitter modules operate from a 24 Volt DC (nominal) power supply, accepting input directly from IEPE sensors and processing the signal to produce a 4-20 mA loop current proportional to the overall in-band vibration. The input dynamic vibration signal is buffered and presented as an output at the BNC connector and on one set of terminals.


  • Front panel BNC for dynamic signal output
  • Communicates with other iT series modules through integrated communication bus
  • Dynamic signal available for portable data collectors or online systems
  • Slim 17.5 mm case
  • ESD protected
  • Reverse wiring protection
  • Manufactured in an approved ISO 9001 facility
The above description encapsulates the entire product series. Specifications for individual configurations may vary depending on the selection chosen.

Selected Configuration

Model #:

Model iT100M/iT200M Series

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Agency Approvals

  • CE

Tests & Certificates

  • ISO 9001

Operating Temperature

  • -40° to 85° C (-40° to 185° F)

Temperature Effect

  • Temperature Offset, Maximum: 0.1% /° C


  • ≤95% Relative Humidity, Non-Condensing


  • Zero (4 mA) Accuracy: ±0.25 mA


  • Sensor Sensitivities Accepted (Accelerometer): 1.02 to 51 mV/m/sec²
  • Sensor Sensitivities Accepted (Piezo Velocity): 0.39 to 19.7 mV/mm/sec


  • 2%


  • Altitude Limit, Operating: 9,842.52 feet (3,000 meters)

Input Signal

  • Maximum Dynamic Signal Input for Linear Response: ±7 V Peak


  • Frequency Response (Amplitude ± 3 dB): ≤0.3 Hz to 20 kHz
  • Frequency Response (Phase Shift at 1 kHz): 0° ± 1°
  • Frequency Response, Without Filtering, -3 dB (Acceleration): 0.3 Hz to 20 kHz
  • Frequency Response, Without Filtering, -3 dB (Velocity): 2 Hz to 5 kHz
  • High-Pass Filtering, 2 Pole, Pre-Set: 0.3 to 1,000 Hz
  • Low-Pass Filtering, 8 Pole, Pre-Set: 200 to 20,000 Hz

Electrical Connectors

  • BNC Connector

Load Resistance

  • Maximum 4-20 mA Loop Load Resistance: 600 Ohms


  • Output, Buffered Dynamic (Noise RTO, Broadband, 1 Hz to 10 kHz, RMS): ≤0.0001 V

Circuit Protection

  • ESD Protection
  • Reverse Wiring Protection

Turn-On Time

  • 120 Seconds


  • Absolute Maximum Voltage: 32 Vdc
  • Current Draw, Maximum: ≤130 mA
  • Sensor Powering (Constant Current): 3.6 mA ± 20%
  • Sensor Powering (Open Circuit Voltage): Vin - 2 ±1 V
  • Voltage (Vin): 24 ±4 Vdc


  • Snap Fit 35 mm DIN Rail

Sensor/Probe Type

  • Sensor Type: IEPE Accelerometer and Piezo Velocity Transducers