MTL4549Y Dual-Channel 4-20mA Signal Converter

MTL4549 HART Signal Isolator: Explosion-Proof 4-20mA Control for Hazardous Areas

What It Does

Drive current/pressure converters in explosive zones using safe-area 4-20mA signals. The MTL4549 supports HART digital communication and detects wiring faults automatically. For open-circuit only detection, choose the MTL4549Y model.

Technical Highlights

• Input Range: 1mA (under) to 24mA (over)
• HART Bandwidth: 500Hz–10kHz
• Accuracy: ±20μA at 20°C
• Ripple: <40μA peak-to-peak
• Safety Cert: ATEX, IECEx, UL Class I Div 1
• Load Limits: 90Ω min / 800Ω max

Setup Made Simple

• Connect any HART valve positioner
• No tools needed for wiring
• Green LED confirms power
• Works with all 4-20mA controllers

Smart Diagnostics

• Detects open circuits at <0.5mA
• Flags short circuits at <50Ω (MTL4549)
• Auto-adjusts for temperature drift: <1.0μA/°C

Warranty & Delivery

• 12-month defect warranty
• Shipped via FedEx/UPS/DHL in 24hrs
• Includes isolator, manual

Compare Models

• MTL4544: Single-channel HART isolator
• MTL4544S: Zone 0 certified sink module

FAQ

• Q: Difference between MTL4549 and MTL4549Y?
  A: MTL4549 detects both open/short circuits. MTL4549Y detects open circuits only.
• Q: Max cable length?
  A: 500m with shielded twisted pair.
• Q: HART communication speed?
  A: 1.2 kbps full duplex.
• Q: Works with non-HART devices?
  A: Yes, for standard 4-20mA signals.
• Q: Overload protection?
  A: Yes, auto-limits at 24mA.