Intrinsically Safe Pre-Amplifiers

Motion Sensors PMX (variable reluctance) and PRX (RF) intrinsically safe preamplifiers offer features similar to our PA1001A preamplifiers / signal conditioners and can be used in hazardous environments with intrinsically safe Variable Reluctance VR or RF sensors (e.g., PC45-X or RF10-X, respectively).

Product Specifications

Unlike our PA1001A preamplifiers, pulse outputs are factory installed and must be indicated when ordering. These preamplifiers are certified to CSA (with NRTL/C) and LCIE to ATEX (2014/34/EU) and IECEx

Input Power

  • 13 to 30 VDC, 35 mA @ 24VDC (Class I, Zone 0, IIC models)
  • 7.5 to 30 VDC, 10 mA @ < 10VDC (Class I, Zone 0, IIA models)
    Reverse polarity protected

RF Sensor Input

  • Modulation carrier frequency: 20 KHz
  • Input frequency: 2 Hz to 5 KHz, adjustable trigger level
  • Carrier adjustment: to allow precise tuning of carrier signal to physical environment (e.g., air gap, wall thickness)
  • Max. air gap: 0.160″ (dependent on target geometry and construction)
  • Preferred coil inductance: 1.0 mH +/- 10%
  • Max. distance from sensor to preamp: 100′

VR Sensor Input

  • Input protected, RF and band pass filtered
  • Input frequency: 10 Hz to 10 KHz, adjustable trigger level
  • Trigger sensitivity: 10 mV RMS min. (note: at 10 mV frequency range 10 Hz to 3 KHz)
  • Input impedance: 40K ohms (nominal)
  • Max. input signal: 60 volts RMS
  • Max. distance from sensor to preamp: 100′

Pulse Output Options

  • All output options must be factory installed
  • Open Collector
  • TTL/CMOS (standard) fanout of 5 TTL/CMOS loads

Interconnection Options

  • Three (3) pin MIL-C-5015 type connector with gold plated pins; mates with MS3106-10SL-3S; other connector types upon request.
  • Pigtail with wires or cables.
  • NPT threaded body with wire or cable pigtail for explosion proof environments.

Physical Dimensions

  • Board diameter: 2.75″
  • Center mounting holes: 2″ and 2.5″

Ambient Temperature

  • CSA Certified Group IIC:
    – Temperature Code T2: -40°C to 125°C
    – Temperature Code T4: -40°C to 51°C
  • CSA Certified Group IIA:
    – Temperature Code T2: -40°C to 100°C
    – Temperature Code T4: -40°C to 51°C
  • ATEX and IECEx Certified Group IIC and IIA:
    – Temperature Code T2: -40°C to 125°C
    – Temperature Code T4: -40°C to 51°C

Enclosures

  • Unit is intended for mounting in a conduit box. Enclosure is not required (unless using in Class II and III locations in which must be enclosed in an approved Class II/III enclosure) but recommended to protect unit from moisture, dirt, etc.

Entity Parameters

  • Group IIC
    To Barrier:
    – Vmax/Ui = 30 VDC, Imax/Ii = 200 mA
    – Pi = 0.75 W; Ci/Ci = 0.0uF, Li/Li = 0.50 mH
    To Sensor:
    – Voc/Uo = 5.9 VDC, Isc/Io = 64 mA
    – Ca/Co = 1 uF, La/Li = 3.5 mH
  • Group IIA
    To Barrier:
    – Vmax/Ui = 30 VDC, Imax/Ii = 190 mA – Pi = 2.55 W; Ci/Ci = 0.0uF, Li/Li = 0.50 mH
    To Sensor:
    – Voc/Uo = 10.5 VDC, Isc/Io = 190 mA
    – Ca/Co = 4 uF, La/Li = 1.5 mH

Approvals

Warranty
Unconditional one (1) year warranty if used within specifications

STANDARD MODELS

Hazardous location: Class I, Zone 0, Group IIC and Class 1, Div. 1 Group A,B,C,D

MODEL NUMBERDESCRIPTIONOUTPUT (Pulse Range)ENCLOSURE COVER TYPE
PMX-001-1For Use With VR SensorOpen CollectorStandard Lid
PMX-001-2For Use With VR Sensor0-5 VDCStandard Lid
PRX-002-1For Use With RF SensorOpen CollectorStandard Lid
PRX-002-2For Use With RF Sensor0-5 VDCStandard Lid

Hazardous location: Class 1, Zone 0 Group IIA and Class 1, Div. 1, Group D

MODEL NUMBERDESCRIPTIONOUTPUT (Pulse Range)ENCLOSURE COVER TYPE
PMX-001-3For Use With VR SensorOpen CollectorStandard Lid
PMX-001-4For Use With VR Sensor0-5 VDCStandard Lid
PRX-002-3For Use With RF SensorOpen CollectorStandard Lid
PRX-002-4For Use With RF Senso0-5 VDCStandard Lid
instrinsically safe speed sensor