MTL3042 Loop-Powered Isolator 4-20mA Signal Transformer

MTL3042 Loop-Powered Isolator: Precision 4-20mA Signal Transformer

Safe Signal Transfer to Hazardous Areas

The MTL3042 works like a DC transformer. It moves 4-20mA signals between safe and hazardous areas. Powers I/P converters and actuators in Zone 0 with high accuracy.

Technical Specifications

• Brand/Model: MTL3042 Isolation Series
• Voltage Range: 11-35V DC
• Signal Transfer: 4-20mA identical input/output
• Accuracy:
  • ±50μA at 20°C
  • Temperature drift: <2μA/°C
• Response Time: 70ms (to 90% final value)
• Output Capability:
  • Min voltage: 8V@20mA
  • Max voltage: 28V@300Ω
• Ripple Rejection: <100μA peak-to-peak
• Fuse: 50mA semi-time-lag (DIN 41571)
• Weight: 160g (compact design)

Safety & Compliance

• Hazardous Area Certification:
  • Zone 0, IIC, T4-T6
  • Div. 1, Group A
• Entity Parameters:
  • Voc=28V, Isc=93mA
  • Ca=0.13μF, La=4.0mH

Installation Notes

• Power from safe-area side only
• For I/P converters and position actuators
• Use MTL3045 for voltage-sensitive loops
• MTL3043 alternative for cost-sensitive applications

Package & Support

• Contents: Isolator unit, documentation
• Warranty: 12-month quality guarantee
• Shipping: FedEx, UPS, DHL (2-5 business days)

Expert FAQs

• Q: Minimum input voltage?
  A: 11V DC required for operation
• Q: Can it handle signal reversal?
  A: Bidirectional signal transfer supported
• Q: Ripple rejection capability?
  A: <100μA peak-to-peak noise rejection
• Q: Fuse replacement type?
  A: 50mA semi-time-lag (5x20mm glass)
• Q: Power consumption at 24V?
  A: 0.4W typical with 20mA signal