MTL 5544D Frequency/Pulse Isolator | Frequency Input, 4-20mA Output, IS, DIN Rail, ATEX/FM/CSA

MTL 5544D Frequency/Pulse Isolator | Frequency Input, 4-20mA Output, IS, DIN Rail, ATEX/FM/CSA

MTL 5544D frequency isolator specifications. Converts frequency/pulse inputs to 4-20mA output, galvanic isolation, 24V DC, hazardous area certified, dual-channel.

Product Overview

The MTL 5544D is a dual-channel frequency-to-current converter and isolator designed for pulse and frequency signals from hazardous areas. It accepts frequency or pulse inputs from devices like turbine flow meters, tachometers, and proximity sensors, converts them to an isolated 4-20mA output, and provides intrinsic safety (IS) isolation for the control system. The "D" version indicates specific configuration options within the 5544 series.

Technical Specifications

Key Features

• Frequency Input:​ Accepts frequency/pulse signals up to 10kHz

• Multiple Input Types:​ Configurable for Namur, contact, or voltage pulse inputs

• Frequency-to-Current Conversion:​ Converts frequency to proportional 4-20mA output

• High Accuracy:​ ±0.1% analog accuracy, ±0.01% frequency accuracy

• Dual Independent Channels:​ Two fully isolated frequency input channels

• Intrinsic Safety:​ Certified for Zone 1/21 hazardous locations

• Complete Isolation:​ 500V isolation prevents ground loops and protects systems

• Active Output:​ 4-20mA 2-wire output capable of driving loads up to 600Ω

• Software Configurable:​ Input type, frequency range, scaling via PC

• Visual Diagnostics:​ Per-channel LEDs indicate power status and input activity

• Linear/Non-linear Scaling:​ Configurable scaling curves for different applications

Applications

• Turbine flow meter signal conditioning

• Tachometer and speed measurement

• Proximity switch and encoder interfaces

• Pulse output flow totalization

• Vibration monitoring systems

• Safety instrumented systems (SIL 2 capable) for speed monitoring

Important Notes

1. The 5544D converts frequency/pulse signals to 4-20mA analog output

2. Input type (Namur, contact, voltage) must be configured via software

3. Frequency range and scaling must be set according to the field device specifications

4. Configuration is required via MTL software for proper operation

5. The 4-20mA output is active and requires an external 24V DC supply for the output loop

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About ACH

Founded in 2012, ACH is a top-tier distributor of industrial automation products, supplying genuine devices from leading brands like ABB, P+F, E&H, AB, MTL and EMERSON to emerging markets worldwide. Our mission is to provide 100% Genuine products at the most competitive prices, helping customers reduce costs and strengthen their market position.

Frequently Ask & Questions

Are preferential prices available?

Long-term brand partners can get competitive product prices. At the same time, ACH controls the profit per order to 5%, providing the most competitive prices.

Are the Products Genuine OEM Units?

Yes, all products from ACH are certified genuine OEM units. We acquire our inventory through official OEM channels and trusted third-party suppliers, ensuring every item is authentic and reliable.

How will you arrange shipment?

We'll handle the shipping for you. Through our partnerships, we can secure competitive rates with major carriers like FedEx, DHL, TNT, and UPS, ensuring a smooth and cost-effective delivery.

What is the warranty of goods?

One-year Warranty.

How long is the logistics cycle of the product?

Products are divided into spot and futures, and the delivery period of different brands of products is also different. For details, please contact the ACH business manager.