MTL4041A Signal Conditioner: Smart HART Communication for Hazardous Areas
Essential Functionality
Connect 4-20mA transmitters in explosive zones with safe-area control systems. Features bi-directional HART communication for remote device setup and monitoring. Works with handheld communicators.
Key Advantages
• Single-channel isolation
• HART signal support (50Hz-8kHz)
• Fast 20ms response time
• Zone 0 hazardous area certified
• Smart transmitter compatible
Technical Specifications
Brand: MTL Instruments
Model: 4041A (Full suffix: MTL4041A-XXX)
Input Range: 4-20mA (1.0-21.5mA over/under)
Accuracy: ±20μA at 20°C
HART Impedance: >230Ω
Voltage Drop: <6.2V max
Load Range: 0-600Ω
Ripple: <50μA peak-to-peak
Temp Stability: <1.0μA/°C
Power: 20-35V DC (50-85mA)
Isolation: 250V AC
Terminal Connections
Transmitter: Terminals 5(+), 6(-)
Output: Terminals 9(+), 11(-)
HHC: Terminals 3/7(+) and 4/8(-)
Power: Terminals 14(+), 13(-)
Safety Certifications
• ATEX/IECEx: Zone 0, IIC T4-T6
• FM/CSA: Div. 1, Group A
• Safety Parameters: Uo=8.6V
Package Contents
• MTL4041A signal conditioner
• Installation guide
• Safety compliance documents
• Terminal layout card
Warranty & Shipping
12-month product warranty. Ships via FedEx, UPS or DHL.
Expert FAQs
Q1: Does the MTL4041A power the transmitter?
A: No, works with separately powered transmitters only.
Q2: Can I connect two HHCs simultaneously?
A: Yes, use both terminal pairs (3-4 and 7-8).
Q3: What’s the maximum HART signal frequency?
A: Supports up to 8kHz bandwidth.
Q4: How accurate is signal transfer?
A: Better than 20μA at room temperature.
Q5: Is calibration required after installation?
A: No, maintains accuracy without recalibration.










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