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Product Details:

Place of Origin: UK
Brand Name: MTL
Certification: CE
Model Number: MTL5549/Y

Payment & Shipping Terms:

Minimum Order Quantity: 15 pcs
Packaging Details: carton
Delivery Time: within 4 week
Payment Terms: T/T payment
Supply Ability: 300 pcs
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Detailed Product Description

MTL5549/Y two-channel, for 4–20mA, HART® valve positioners with line fault detection

MTL5549 accepts 4/20mA floating signals from safe-area controllers to drive 2 current/pressure converters (or any other load up to 800Ω) in a hazardous area. For HART valve positioners, the module also permits bi-directional transmission of digital communication signals. Process controllers with a readback facility can detect open or short circuits in the field wiring: if these occur, the current taken into the terminals drops to a preset level. The MTL4549C and MTL5549Y are very similar to the MTL5549 except that they provide open circuit detection only  

(i.e. no short-circuit detection).


See also common specification

Number of channels


Location of I/P converter

Zone 0, IIC, T4–6 hazardous area if suitably certified

Div. 1, Group A, hazardous location

Working range

4 to 20mA

Digital signal bandwidth

500Hz to 10kHz

Maximum load resistance

800Ω (16V at 20mA)

Minimum load resistance

90Ω (short-circuit detection at < 50Ω)

Output resistance

> 1MΩ

Under/over range capability

Under range = 1mA

Over range = 24mA (load ≤ 520Ω)

Input and output circuit ripple

<40µA peak-to-peak

Communications supported


Transfer accuracy at 20°c

Better than 20µA

Temperature drift

< 1.0µA/°C

Contact Details

Contact Person: Ms. Wendy

Tel: 86-21-58111208

Fax: 86-21-58111208

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