Product Overview
The MTL 8142-DO-DC is a high-performance intrinsically safe (IS) digital output module developed by MTL, a global leader in industrial explosion protection and signal conditioning solutions. As a core component for hazardous area automation, this module is engineered to safely drive low-power field devices—such as solenoid valves, indicator lights, and small relays—in explosive environments (e.g., oil refineries, chemical plants, and gas processing facilities). The MTL 8142-DO-DC achieves intrinsic safety certification (ATEX/IECEx Zone 0/1) by limiting electrical energy (voltage/current) to levels that cannot ignite flammable gas-air mixtures, eliminating fire and explosion risks. With its robust surge protection (up to 2 kV) and ability to filter electromagnetic interference (EMI), the MTL 8142-DO-DC ensures reliable operation in harsh industrial conditions, including high humidity, dust, and temperature fluctuations. Seamlessly integrating with standard DCS/PLC systems (e.g., Siemens S7, Allen-Bradley ControlLogix), the MTL 8142-DO-DC enables safe, efficient control of field devices in hazardous areas while simplifying system integration and reducing maintenance costs.
Hainan Jinlin Mechanical & Electrical is a distributor of industrial control products, specializing in a wide range of brands. We possess extensive industry knowledge and market insights. Adhering to the "Customer First, Forge Ahead" business philosophy, we provide high-quality customer service. We're here for you, dedicated to meeting your needs!
Technical Specifications
|
Parameter
|
Value
|
|
Product Model
|
MTL 8142-DO-DC
|
|
Manufacturer
|
MTL (Measurement Technology Ltd.)
|
|
Product Type
|
Intrinsically Safe Digital Output Module
|
|
Output Channels
|
2 isolated digital output channels
|
|
Output Current
|
0-500 mA per channel (max)
|
|
Output Voltage
|
0-24 V DC (nominal); 18-32 V DC (range)
|
|
Intrinsic Safety Certification
|
ATEX/IECEx Ex ia IIC T4 Ga (Zone 0); Class I, Div 1, Groups A-D (UL/CSA)
|
|
Surge Protection
|
2 kV (line to ground, per IEC 61000-4-5)
|
|
Operating Temperature
|
-20°C to +60°C (-4°F to +140°F)
|
|
Communication Interface
|
Passive signal conditioning (no active protocol; interfaces with DCS/PLC digital outputs)
|
|
Mounting Type
|
DIN rail (35mm standard, EN 50022)
|
|
Power Consumption
|
<2 W (typical, at 24 V DC)
|
|
Isolation
|
500 V AC (channel to ground; channel to channel)
|
Key Features and Benefits
Certified Intrinsic Safety for Hazardous Areas
The MTL 8142-DO-DC holds global intrinsic safety certifications (ATEX/IECEx Zone 0, UL/CSA Class I Div 1), making it suitable for the most dangerous explosive environments (e.g., hydrogen, propane, or gasoline vapor atmospheres). By limiting output energy to <1.2 W per channel, the module prevents electrical arcs or sparks that could ignite flammable mixtures—eliminating the need for expensive explosion-proof enclosures and reducing installation costs. This certification ensures compliance with international safety standards, minimizing regulatory risks for end-users.
Robust Surge & EMI Protection
Equipped with integrated surge protection (2 kV line-to-ground) and EMI filtering (compliant with IEC 61000-6-2), the MTL 8142-DO-DC safeguards against voltage spikes caused by lightning, motor switching, or power grid fluctuations—common issues in industrial settings. The EMI filtering ensures stable signal transmission, preventing false triggers or device malfunctions due to electrical interference from nearby motors, drives, or high-voltage equipment. This protection extends the lifespan of connected field devices and reduces unplanned downtime.
Flexible Integration with DCS/PLC Systems
The
MTL 8142-DO-DC operates as a passive signal conditioner, requiring no proprietary software or communication protocols to integrate with standard DCS/PLC digital output modules. It simply connects between the DCS/PLC output and the hazardous-area field device, converting non-IS signals to IS signals without modifying existing control logic. This plug-and-play compatibility supports retrofits of legacy systems and new installations alike, reducing engineering time and ensuring compatibility with multi-vendor automation architectures.
Isolated Channels & Reliable Performance
Each output channel of the MTL 8142-DO-DC features 500 V AC isolation from ground and other channels, preventing cross-talk between channels and protecting the DCS/PLC from ground loops or fault currents in the hazardous area. The module’s industrial-grade components (e.g., high-temperature capacitors, ruggedized PCBs) ensure reliable operation in extreme conditions—from -20°C cold storage to +60°C chemical plant environments. With a mean time between failures (MTBF) exceeding 1 million hours, the MTL 8142-DO-DC minimizes maintenance requirements and ensures long-term system availability.
Cost-Effective Hazardous Area Control
By eliminating the need for explosion-proof enclosures (which can cost 5-10x more than standard devices), the MTL 8142-DO-DC significantly reduces upfront installation costs. Its compact DIN rail design (2 channels in a 17.5mm width) saves rack space, while low power consumption (<2 W) lowers energy costs. Additionally, the module’s ability to drive up to 500 mA per channel supports a wide range of field devices (e.g., 24 V DC solenoid valves, LED indicators), reducing the number of modules needed for multi-device applications.
Related Models
- MTL 8141-DO-DC – 1-channel intrinsically safe digital output module, ideal for single-device applications (e.g., standalone solenoid valves).
- MTL 8144-DO-DC – 4-channel variant, offering high density for multi-device hazardous area control (e.g., chemical reactor instrument panels).
- MTL 8152-DO-AC – AC-powered version (110/240 V AC output), designed for driving AC field devices (e.g., AC relays, incandescent lights) in hazardous areas.
- MTL 8142-DI-DC – Companion intrinsically safe digital input module, paired with the MTL 8142-DO-DC for complete IS I/O control in hazardous areas.
- MTL 8142-DO-DC-T – High-temperature variant (operating range: -40°C to +70°C), optimized for extreme environments like offshore oil rigs or desert refineries.
- MTL 8142-DO-DC-R – Redundant power input model, ensuring continuous operation during power supply failures (critical for safety-critical applications like emergency shutdown valves).
- MTL 8162-AO-DC – Intrinsically safe analog output module, complementary to the MTL 8142-DO-DC for controlling variable-speed devices (e.g., proportional valves) in hazardous areas.
Distributor & Service Highlights
As a certified partner of MTL, Bently Nevada, and Honeywell, we provide critical explosion protection components for oil & gas, chemical, and pharmaceutical industries. For the MTL 8142-DO-DC, we offer:
- Pre-sales Support: Expert consultation to verify intrinsic safety compatibility with your hazardous area classification (e.g., Zone 0 vs. Zone 1) and connected field devices, ensuring compliance with local safety regulations.
- After-sales Service: Dedicated troubleshooting, certification verification, and a one-year warranty on all purchases. Our team of MTL-trained technicians can assist with installation checks to confirm IS integrity.
- Fast Availability: Expedited delivery for emergency replacements, minimizing downtime in critical hazardous area operations (e.g., refinery turnarounds or chemical batch production).
If you cannot find the model you need (including the MTL 8142-DO-DC or related intrinsic safety modules), please contact us immediately.
Contact Information
