MTL4045C 4-20mA Signal Repeater | Zone 0 Certified

MTL4045C Signal Repeater: Reliable 4-20mA Isolation for Hazardous Areas

Product Description

The MTL4045C safely repeats 4-20mA control signals from safe areas to hazardous locations (Zone 0/Div.1). It drives I/P converters or loads up to 800Ω with independent floating circuits. Features open-circuit detection for field wiring faults.

Technical Specifications

• Brand/Model: MTL4045C
• Measurement Range: 4-20mA (1.0-21.4mA under/over range)
• Load Resistance: Max 800Ω
• Accuracy: Better than 20μA at 20°C
• Temperature Drift: <1.0μA/°C
• Ripple: <40μA p-p
• Isolation: 250V AC between zones
• Power: 24V DC (1.0W max)
• Environment: -20°C to +60°C (standard industrial)

Installation Guide

• Connect to terminals: #14(+ve), #13(-ve) for power; #12(+ve), #11(-ve) for input; #3(+ve), #4(-ve) for output
• Max wiring resistance: 200Ω (intact), >47kΩ (open)
• Use shielded cables in noisy environments

Diagnostics & Maintenance

• Fault Detection: Input resistance >47kΩ indicates open circuit
• Green LED confirms power status
• No calibration needed – maintenance-free operation

Compatibility

• Works with any 4-20mA controller (e.g., PLCs, DCS)
• Compatible with I/P converters, valves, transducers
• Accepts 20-35V DC power supplies

Certifications & Safety

• ATEX/IECEx: Zone 0, IIC, T4-T6
• FM: Div.1, Group A
• Entity Parameters: Voc=28V, Isc=93mA

Package & Warranty

• 1× MTL4045C unit, datasheet
• 12-month warranty against defects
• Global shipping via FedEx/UPS/DHL

FAQ

• Q: Does it detect short circuits?
  A: No – only open-circuit detection (MTL4045B detects shorts)
• Q: Can I use it with 24V PLC systems?
  A: Yes – compatible with 20-35V DC supplies
• Q: Is intrinsic safety (IS) barrier needed?
  A: No – it serves as an IS interface itself