MTL MTL4544 | Analog Output Isolator

Product Description

The MTL MTL4544, also cataloged as the MTL4544 Analog Output Isolator, operates as a dedicated hardware component for 4-20 mA signal conversion within intrinsic safety networks. This single-channel device enforces galvanic isolation between the input, output, and power supply circuits. Furthermore, it reproduces analog current loops to drive hazardous area field devices.

Hardware Specifications

Intrinsic Safety Barriers & Surge Voltage Protection Limits

This module functions as a critical intrinsic safety (Ex i) barrier within hazardous area architectures. The device enforces strict galvanic isolation boundaries to prevent high-energy electrical faults from transferring into classified zones. Consequently, the MTL4544 limits available energy to maintain safe operation parameters. Moreover, the unit actively mitigates surge voltage protection limits to safeguard downstream field instruments. Thus, this isolator maintains signal fidelity while strictly adhering to the energy limitation parameters required for explosive atmospheres.

Frequently Asked Questions

Q: Does the MTL4544 support hot-swapping during active loop operations?
A: No. The device does not support hot-swapping while energized. Technicians must de-energize the 24 VDC power supply before inserting or extracting the module to prevent transient voltage spikes that could compromise the intrinsic safety barrier or damage connected field devices.

Q: How does the 0.1% accuracy specification impact total loop error?
A: The 0.1% full-scale accuracy defines the baseline conversion error of the isolator itself. When calculating total loop error, engineers must add this baseline error to the transmitter error, receiver error, and thermal drift contributions to ensure the overall system measurement remains within acceptable control tolerances.

Q: What happens if the output load exceeds the 750 Ohm limit?
A: If the total loop resistance exceeds 750 Ohm, the output current will saturate before reaching the 20 mA setpoint. This saturation causes non-linear signal distortion and prevents the field device from receiving the correct command. Therefore, technicians must verify the total loop resistance, including cable resistance and receiver input impedance, prior to commissioning.

Field Installation Guidelines

First, secure the module onto a standard 35 mm DIN rail, ensuring the mounting clips engage fully to maintain mechanical stability and thermal dissipation. Next, route input and output wiring in separate conduits or trays to prevent capacitive coupling and maintain the integrity of the intrinsic safety separation. Furthermore, verify that all field wiring connections utilize appropriate IP20-rated gland plates or enclosure seals to preserve the environmental rating. Finally, confirm that the 24 VDC power supply is correctly polarized and current-limited before energizing the circuit to prevent reverse polarity damage to the internal isolation components.

Other Attributes

• Country of Origin: France
  Lead Time: In Stock, 2 Working Days

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TEL: +86 18030205725     E-MAIL: manskiwong@cambia.cn

Question 1: Is Our Price Competitive?

NEW-GEN collaborates with over 50 countries worldwide. As a leading supplier in China, we can provide significant discounts to customers based on market demand.

Question 2: What Is The Warranty Period?

We offer a standard one-year warranty for all new and original items.

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