Product Overview
The Wilcoxon PC420A-DA series are loop-powered acceleration sensors with dual output capabilities, designed for continuous 24/7 monitoring of overall machine vibration. These sensors integrate easily into existing PLC, DCS, or SCADA systems, providing dynamic signal output for in-depth analysis. They offer a choice of peak equivalent, true RMS, or true peak output, allowing users to select the option that best fits their industrial requirements. The PC420A-DA series helps in trending machine conditions, alerting users to changes, and guiding maintenance prioritization. Manufactured in an approved ISO 9001 facility, these sensors are hermetically sealed and constructed from 316L stainless steel.
Product Attributes
- Brand: Wilcoxon Sensing Technologies (An Amphenol Company)
- Certifications: ISO 9001 approved facility
- Material: 316L stainless steel
- Sealing: Hermetic
- Sensing Element Design: PZT ceramic / shear
- Origin: USA
Technical Specifications
| Specification | Value |
|---|---|
| Model Series | PC420A-DA |
| Output Type | 4-20 mA (proportional to acceleration vibration) + Dynamic Output |
| Dynamic Output Sensitivity | 100 mV/g ( 10%) |
| Dynamic Output Full Scale | 20 g |
| Dynamic Output Frequency Response | 2.5 Hz - 10 kHz ( 3 dB) |
| Dynamic Output Noise (equiv. g) | 2 mg (2.5 Hz - 10 kHz) |
| Dynamic Output Bias Voltage | +3.3 VDC (re: connector pin B) |
| 4-20 mA Output Full Scale | 20 mA ( 5%) |
| 4-20 mA Frequency Response | 10 Hz - 1.0 kHz ( 10%) / 4.0 Hz - 2.0 kHz ( 3 dB) |
| Repeatability | 2% |
| Transverse Sensitivity (max) | 5% |
| Amplitude Nonlinearity (max) | 1% |
| Resonant Frequency (mounted, nominal) | 25 kHz |
| Power Requirements (2-wire loop power) | 12 - 30 VDC at sensor terminals |
| Loop Resistance (max at 24 VDC) | 700 |
| Turn on Time (4-20 mA loop) | < 30 sec |
| Temperature Range | 40 to +85C |
| Vibration Limit | 250 g peak |
| Shock Limit | 2,500 g peak |
| Weight | 162 grams |
| Mounting | 1/4-28 tapped hole |
| Output Connector | 3 pin, MIL-C-5015 style |
| Mating Connector | R6G type |
| Recommended Cabling | J9T3A (3-conductor shielded, yellow Teflon jacket) |
| Connections (Connector Pin) | A: Loop positive (+) B: Loop negative (), dynamic common C: Dynamic output |
| Grounding | Case isolated, internally shielded |
| Accessories Supplied | SF6 mounting stud; calibration data (level 2) |
Model Selection Guide (PC42Ax-yy-DA)
| Parameter | Options | Description |
|---|---|---|
| Output Type (x) | R, P, TP | R = RMS output, P = calculated peak output, TP = true peak output |
| Full Scale (yy) | 05, 10, 20 | 05 = 5 g (49 m/sec), 10 = 10 g (98 m/sec), 20 = 20 g (196 m/sec) |
| Dynamic Output (DA) | DA | Acceleration, 100 mV/g |
Loop Resistance Calculations
| DC Supply Voltage (VDC) | RL (max resistance) | RL (minimum wattage capability) |
|---|---|---|
| 12 VDC | 100 | 1/8 watt |
| 20 VDC | 500 | 1/4 watt |
| 24 VDC | 700 | 1/2 watt |
| 26 VDC | 800 | 1/2 watt |
| 30 VDC | 1,000 | 1/2 watt |
2506301128_Amphenol-PC420ATP-20-DA_C3319159.pdf
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