PC420A-EX WILCOXON | Alldatasheet

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Wilcoxon Sensing Technologies 8435 Progress Drive Frederick, MD 21701 USA An Amphenol Company Note: Due to continuous process improvement, specifications are subject to change without notice. This document is cleared for public release. Tel: +1 (301) 330-8811 Fax: +1 (301) 330-8873 info@wilcoxon.com buy.wilcoxon.com www.wilcoxon.com 98823 Rev. C.2 09/18 PC420A-EX series Explosion-proof, acceleration loop powered sensor Key features

  • RMS, peak equivalent or true peak detection
  • Explosion-proof certified
  • Provides continuous trending of overall machine vibration
  • Manufactured in an approved ISO 9001 facility Certifications Class I, Div 1, 2 Groups A, B, C, D Class II, Div 1, 2 Groups E, F, G Class III T3C Ta = 85°C max II 2 G Ex d IIC T3 II 3 G Ex nA IIC T3 -40°C ≤ Ta ≤ +85°C For hazardous area locations, sensor must be installed in accordance with installation instructions or local code requirements. Special conditions for safe use: – Conduit seal must be installed within 18 inches (450 mm) of the enclosure. – Use supply wires with spreading suitable for at least 70° C. x (4-20 mA output type) yy (4-20 mA full scale) R = acceleration, RMS output P = acceleration, equivalent peak output TP = acceleration, true peak output 05 = 5 g (49 m/sec2) 10 = 10 g (98 m/sec2) 20 = 20 g (196 m/sec2) Table 1: PC420Ax-yy-EX model selection guide

Wilcoxon Sensing Technologies 8435 Progress Drive Frederick, MD 21701 USA An Amphenol Company Note: Due to continuous process improvement, specifications are subject to change without notice. This document is cleared for public release. 98823 Rev. C.2 09/18 PC420A-EX series Explosion-proof, acceleration loop powered sensor SPECIFICATIONS Accessories supplied: SF20-2 mounting stud; calibration data (level 2) Optional accessories: SF20-1 mounting stud (1/4-28 to 3/8-24) Full scale, 20 mA, ± 5% see Table 1 on page 1 Frequency response: ± 10% ± 3 dB 10 Hz - 1.0 kHz 4.0 Hz - 2.0 kHz Repeatability ± 2% Transverse sensitivity, max 5% Power requirements, 2-wire loop power: Voltage at sensor terminals 14 - 30 VDC Loop resistance1 at 24 VDC, max 700 Ω Turn on time, 4-20 mA loop <10 sec Grounding case isolated, internally shielded Temperature range –40° to +85° C Vibration limit 250 g peak Shock limit 2,500 g peak Sealing epoxy sealed Sensing element design PZT, shear Weight 380 grams Case material 303 stainless steel Mounting 3/8-24 x 3/8 depth tapped hole Output leads, 18 AWG 13 ft. Connections Function Cable color loop positive (+) red loop negative (–) white Tel: +1 (301) 330-8811 Fax: +1 (301) 330-8873 info@wilcoxon.com buy.wilcoxon.com www.wilcoxon.com 1.0" NPT 1.32" 3.40" .40" 1.00"3/8-24 UNF mounting hole Notes: 1 Maximum loop resistance (RL) can be calculated by: RL =

2 Lower resistance is allowed, greater than

10 Ω recommended.

3 Minimum RL wattage determined by:

(0.0004 x RL). DC supply voltage RL (max resistance)2 RL (minimum wattage capability)3

12 VDC 100 Ω 1/8 watt

20 VDC 500 Ω 1/4 watt

24 VDC 700 Ω 1/2 watt

26 VDC 800 Ω 1/2 watt

30 VDC 1,000 Ω 1/2 watt

VDC power – 12 V 20 mA T ypic al cir cuit Model PC420Axx-yy-EX DC powe r suppl yR L Signal measuring equipment Red A, 4-20 plus White B, 4-20 minus PL C / DCS