HART Signal Conditioner MTL4646 Hazardous Area Converter | Buy Now

MTL4646 Signal Conditioner: Reliable 4-20mA Conversion with HART Communication

Essential Functionality

Drive devices in explosive zones using 4-20mA signals from safe areas. Features bi-directional HART communication for valve control. Automatically detects field wiring faults.

Technical Specifications

• Brand: MTL Instruments
• Model: 4646 (Full suffix: MTL4646-XXX)
• Input Signal: 4-20mA floating
• Accuracy: ±20μA at 20°C
• Load Capacity: 90Ω to 800Ω
• Over Range: 24mA (520Ω max)
• Voltage Output: 16V max at 20mA
• Ripple: <40μA peak-to-peak
• Temp Stability: <1.0μA/°C
• Response Time: 100ms

Fault Detection

• Normal Operation: <6.0V
• Open Circuit: <0.9mA
• Short Circuit: <0.9mA

Safety Certifications

• ATEX/IECEx: Zone 0, IIC
• FM/CSA: Div. 1, Group A
• Safety Parameters: U_o=28V, I_o=93mA

Package Contents

• • MTL4646 signal conditioner
• • Installation manual
• • Terminal connection guide

Warranty & Shipping

12-month product warranty. Ships via FedEx, UPS or DHL.

Expert FAQs

• Q1: What devices work with the MTL4646?
  A: Current/pressure converters, valves, and any load under 800Ω.
• Q2: How does fault detection work?
  A: Current drops below 0.9mA during wiring faults.
• Q3: Can I use this with non-HART devices?
  A: Yes, works with standard 4-20mA equipment.
• Q4: What’s the maximum cable length?
  A: Limited only by 800Ω maximum load resistance.
• Q5: Is calibration needed?
  A: Maintains accuracy without recalibration.