Eaton MTL831B Simulated multiplex transmitter

Specific Parameters

Brand Eaton

Product Series Eaton MTL830 Series Intrinsically Safe Transmitter

Product Type Intrinsically Safe Analog Multiplexer Transmitter

Model MTL831B

Intrinsically Safe Rating Suitable for Zone 0 Hazardous Areas

Input Type Up to 16 thermocouples/millivolt sources (max ±60mV), or 15 2/3/4-wire RTDs

Signal Transmission Single-pair data highway transmission, supporting dual redundant data highways

Transmission Distance Up to 2km in hazardous areas, up to 3km in safe areas

Power Supply Powered by data highway, no independent on-site power supply required

Supply Voltage 12-32VDC

Power Dissipation Maximum 160mW at 12V with 20mA signal

Output Signal Digital signal (transmitted to receivers such as MTL838B via proprietary protocol)

Fuse Specification 50mA, 5×20mm glass fuse, compliant with DIN 41571, semi-time-lag (M)

Ripple Coefficient Input and output circuit ripple ≤1mA peak-to-peak

Installation Method Compatible with ENC8/ENC83 series enclosures

Physical Weight 1000g

Warranty Period 12 Months

Origin United States

Supporting Equipment Compatible with MTL838B receiver, MTL3052 isolator, MTL4220 earth fault detector

Product Performance

Intrinsically safe design can be directly used in Zone 0 hazardous areas without additional explosion-proof measures, effectively ensuring equipment operation and personnel safety in high-risk scenarios.

Supports mixed access of thermocouple, millivolt source and RTD signals, enabling simultaneous collection of multiple types of signals with a single device, greatly improving system integration and reducing the number of deployed devices.

Integrates signal transmission and power supply via a single-pair data highway, eliminating the need for on-site power cables, reducing construction costs and line complexity, and adapting to long-distance transmission needs.

Two MTL831B units can share the same data highway to connect to a safe-area receiver, expandable to 32 multiplexed inputs, flexibly adapting to the needs of projects of different scales.

Equipped with fault self-protection function, the device can continue to work when a single link fails. Optional earth fault protection (connect terminal 8 to MTL4220) ensures timely fault response without affecting overall operation.

Compatible with low-capacitance and low-resistance cables for transmission, the transmission distance of 2km in hazardous areas and 3km in safe areas can meet the cross-area signal transmission needs of most industrial sites.

Compact structure is compatible with ENC8/ENC83 series dedicated enclosures. The enclosures with IP67 protection level are dustproof and waterproof, ensuring stable operation in harsh industrial environments.