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4 to 20mA into 4 to 20mA, fast passive signal transmitter, self-powered

Isolation guaranteed No power supply (self-powered) – Easier cabling Higher reliability Reduced volume & cost

In industrial settings, analog signals resulting from the measurement of physical data (temperature, weight, pressure, frequency, etc.) must be isolated from interference voltages and unevenly referenced grounds.

Our passive transmitter, galvanic isolator, isolated quadrupor, solves these problems. Very easy to use, this link for your control loop does not require any external power supply, nor any adjustment.

In order to ease the possible fine-tuning between sensor and actuator, this “4 to 20mA” transmitter can operate outside its normal range, from 2mA to 60mA, while maintaining its accuracy.

Description

Input 

  • Normal input current (Iin): 4 to 20mA for a load ≤ 500Ω
  • Maximum input range: 2 to 60mA for a load ≤ 150Ω
  • Maximum exploitable voltage of the current source: 18V
  • Voltage drop-out: ≤ 1.6V (at input 4mA) and ≤ 3.2V (at 20mA)
  • Voltage generated on the input: (R load x Iin) + V drop-out

Output

  • Isolation: 2.5kV and 100MΩ / 500V
  • Current precision: more than 0.2%
  • Current regulation: more than 0.1%
  • Normal load: ≤ 500Ω
  • Maximum load: ≤ 720Ω
  • Ripple: ≤ 65µA
  • Switching frequency: fixed, 60kHz
  • Rise time, from 4 to 20mA: ≤ 3ms

Temperature  

  • Temperature drift: < 0.004% per °C
  • Operating: – 30°C to + 70°C
  • Storage: – 50°C to + 100°C

Protections

  • Inversion of the input current
  • Overloads on the input
  • Overloads and short circuits
  • Isolation voltage: 2.5kV (test 1 minute)
  • Vibrations et tropicalization: sealing IP67
  • Extremely low temperature drift

Presentations

  • Case: 53 x 38 x 12,5 mm; for DIN rail; weight: < 50g
  • Connections : 4 points, cross-section 4.5mm2 (screw locking)
  • Other presentations upon request

Standards

  • Marking CE / EN 60950-1 / RoHS
  • Flammability: UL94HB, horizontal test for electric applications
  • MTBF: 500,000 hours

For more information about this 4 to 20 mA → 4 to 20 mA self-powered fast signal transmitter: PDF

Additional information

Weight 250 g
Dimensions 100 x 90 x 60 mm