Wilcoxon Sensing Technologies 4-20 mA LPSTM Series Transducer Selection Guide
Product Overview
Wilcoxon's 4-20 mA LPSTM Series transducers are self-contained vibration transmitters designed to integrate vibration data directly into plant control systems like PLCs and DCS. This enables continuous monitoring of critical machinery, allowing plant personnel to trend overall vibration levels, correlate data with operating conditions, and proactively schedule maintenance. These loop-powered sensors offer a cost-effective and convenient solution for predictive maintenance (PdM) strategies, helping to reduce outages and prevent machine failures by providing a reliable indication of overall vibration levels. They are available in various configurations to suit diverse industrial environments and diagnostic needs, including options for hazardous area installations.
Product Attributes
- Brand: Wilcoxon Sensing Technologies
- Product Line: LPSTM Series
- Origin: USA
- Certifications: CSA (U.S. & Canada), LCIE ATEX
Technical Specifications
Measurement Principle: Velocity or Acceleration
Output Signal: 4-20 mA loop powered
Output Calibration Options: Peak, True Peak, RMS (for broadband); Peak, RMS (for frequency banded)
Measurement Units: Velocity (ips) or Acceleration (g)
Full Scale Ranges: User-selectable via model number (e.g., 0.5, 1.0, 2.0, 5.0, 10.0, 20.0, 30.0, 50.0 ips/g)
Frequency Banded Transducers
- Low Frequency (PC420VP-10-B3041): Filters to focus on 3 Hz (180 RPM) to 40 Hz (2400 RPM) for balance and alignment diagnostics.
- High Frequency (PC420AR-10-3223): Filters to focus on 300 Hz (18,000 RPM) to 2,000 Hz (120,000 RPM) for pump cavitation diagnostics.
Dual Output Transducers
- Provide both a 4-20 mA loop signal and a broadband dynamic signal (100 mV/g acceleration or 100 mV/ips velocity).
- Useful for plants with portable spectrum analyzers.
Hazardous Area Installations
- Intrinsically Safe (IS) Models: Certified for CSA Class 1, Div 1, Groups A, B, C, D (T3C) and ATEX EEx ia IIC T3. Part numbers end in -IS.
- Explosion Proof (EX) Models: Certified for CSA Class 1, Div 1/2, Groups A, B, C, D; Class 2, Div 1/2, Groups E, F, G; Class 3, Div 1/2 (T3C) and ATEX EEx d IIC T3 / EEx nA IIC T3. Part numbers end in -EX.
Model Numbering Convention (Partial Example)
| Base Model | Output Type | Range Code | Options |
| PC420 | VP (Velocity Peak) | -10 (1.0 ips) | (Standard) |
| PC420 | VP (Velocity Peak) | -10 (1.0 ips) | -DA (Dynamic Acceleration Output) |
| PC420 | VP (Velocity Peak) | -10 (1.0 ips) | -IS (Intrinsically Safe) |
| PC420VP-10-B3041 | Velocity, Peak Calibrated, Band-limited 3-40 Hz | -10 (1.0 ips) | (Specific Band-Limited Model) |
| PC420AR-10-B3223 | Acceleration, RMS Calibrated, Band-limited 300-2000 Hz | -10 (10 g) | (Specific Band-Limited Model) |
Note: Not all options are available for all models. Refer to individual data sheets for complete option availability. Integral cable sensors typically include 16' of cable.
2412111045_Amphenol-PC421AR-05-IS_C3319167.pdf
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Industrial vibration transducer Amphenol PC421AR-05-IS loop powered sensor for machinery monitoring Images
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