Intrinsically Safe Pre-Amplifiers

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
  Intrinsically safe to CSA (with NRTL/C) for:
• Ex ia IIC: Class I, Zone 0: Class I, Groups A, B, C, D; Class II, Groups E, F, G; Class III
• Ex ia IIA: Class I, Zone 0: Class I, Group D; Class II, Groups E, F, G; Class III
• LCIE to ATEX (2014/34/EU) for Ex II 1 G; Ex ia IIC T4; Ex ia IIC T2; Ex ia IIA T4; Ex ia IIA T2
• IECEx for Ex ia IIC T4; Ex ia IIC T2; Ex ia
• IIA T4; Ex ia IIA T2
• CE compliant to EMC Directive 2004/108/EC for use in residential, commercial, light industrial and heavy industrial environments

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