Product Overview
The MTL 8115-DO-DC is an intrinsically safe (IS) DC digital output module from MTL Instruments, a trusted name in industrial protection and control solutions. Engineered specifically for hazardous areas (such as Zone 0/1/2 for gases and Zone 20/21/22 for dusts), this module acts as a critical interface between non-hazardous control systems (e.g., PLCs, DCSs) and field devices like solenoid valves, relays, or indicator lights in high-risk environments. Key features of the MTL 8115-DO-DC include intrinsic safety certification (ATEX, IECEx), 4-channel DC output, and built-in surge protection—ensuring reliable, compliant operation in explosive atmospheres common in oil & gas, chemical, and pharmaceutical facilities. As a core component of MTL’s IS I/O portfolio, the MTL 8115-DO-DC minimizes the risk of ignition, simplifies system compliance, and reduces installation costs by eliminating the need for expensive explosion-proof enclosures, making it an essential choice for operations prioritizing safety and regulatory adherence.
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Technical Specifications
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Parameter
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Value
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Product Model
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MTL 8115-DO-DC
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Manufacturer
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MTL Instruments
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Product Type
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Intrinsically Safe (IS) DC Digital Output Module
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Safety Certifications
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ATEX (Zone 0/1/2, II 1G/2G); IECEx (Ex ia IIC T4 Ga); UL Class I Div 1
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Output Channels
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4 independent DC digital output channels
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Output Voltage Range
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24 V DC (18–32 V DC supply); 0–24 V DC output
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Output Current
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500 mA per channel (max); 1.5 A total per module
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Operating Temperature
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-20°C to +60°C (-4°F to +140°F)
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Power Consumption
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3 W (max at 24 V DC)
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Enclosure Rating
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IP20 (chassis); suitable for panel mounting
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Communication Interface
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Compatible with PLC/DCS via discrete wiring; no proprietary protocol required
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Key Features and Benefits
Intrinsic Safety for Hazardous Areas
The MTL 8115-DO-DC is rigorously certified to meet global intrinsic safety standards (ATEX, IECEx, UL), ensuring it limits electrical energy (voltage, current, and power) to levels too low to ignite flammable gases, vapors, or dusts in Zone 0/1/2 and Zone 20/21/22 areas. This eliminates the need for costly explosion-proof enclosures or purge systems, reducing both upfront installation costs and long-term maintenance expenses. Unlike non-IS modules, the MTL 8115-DO-DC can be directly installed in or near hazardous zones, shortening wiring runs and improving signal reliability—critical for time-sensitive applications like emergency shutdown (ESD) valves in oil refineries.
Robust Performance & Surge Protection
Each of the
MTL 8115-DO-DC’s 4 output channels includes built-in surge and transient protection, shielding connected field devices (e.g., solenoid valves) from voltage spikes caused by lightning, power grid fluctuations, or equipment switching. The module also features short-circuit and overload protection: if a channel detects a short circuit, it automatically limits current to 500 mA per channel, preventing damage to the module or connected devices. This robust design ensures consistent performance even in harsh industrial environments, minimizing unplanned downtime and extending the lifespan of both the module and field equipment.
Flexible Integration & Ease of Use
The MTL 8115-DO-DC is designed for seamless integration with all major PLC and DCS platforms (e.g., Siemens S7, ABB AC 800M, Honeywell Experion) via standard discrete wiring—no proprietary software or adapters required. Its 4 independent channels can be configured to control different devices (e.g., one channel for a valve, another for an indicator light) without cross-interference, offering flexibility for diverse application needs. The module’s compact, DIN-rail mountable design saves space in control cabinets, while clear LED status indicators (power, channel active, fault) simplify troubleshooting for maintenance teams. Hainan Jinlin Mechanical & Electrical supports the MTL 8115-DO-DC with a one-year warranty, plus pre-sales technical support (e.g., verifying IS compliance for your specific hazardous area classification) and after-sales assistance for installation and calibration.
Related Models
- MTL 8115-DI-DC – Digital input counterpart to the MTL 8115-DO-DC, featuring 4 IS DC input channels for monitoring field sensors in hazardous areas .
- MTL 8115-DO-DC-H – High-temperature variant of the MTL 8115-DO-DC, operating up to +75°C (+167°F) for extreme-heat applications (e.g., chemical reactors) .
- MTL 8125-DO-DC – 8-channel version of the MTL 8115-DO-DC, ideal for large-scale systems requiring more output points (e.g., offshore oil platforms) .
- MTL 8115-DO-AC – AC-powered variant of the MTL 8115-DO-DC, designed for applications where AC field devices (e.g., AC relays) are used .
- MTL 8571 – Surge protection module that pairs with the MTL 8115-DO-DC to enhance transient protection in lightning-prone areas (e.g., outdoor pipelines) .
- MTL 8115-DO-DC-EX – Enhanced explosion-proof version of the MTL 8115-DO-DC, certified for Zone 0 areas with highly flammable substances (e.g., hydrogen processing plants) .
- MTL 8116-DO-DC – Redundant power supply model of the MTL 8115-DO-DC, ensuring uninterrupted operation if one power source fails (critical for safety-critical ESD systems) .
Typical Application Areas
As a certified partner of industry leaders such as Bentley Nevada, Honeywell, and ABB, we provide key components for:
- Oil & Gas: Controlling solenoid valves, ESD systems, and pump starters in refineries, offshore rigs, and natural gas processing plants—where the MTL 8115-DO-DC’s IS certification prevents ignition risks .
- Chemical Manufacturing: Operating agitator motors, valve actuators, and alarm systems in Zone 1 areas handling flammable chemicals (e.g., ethanol, benzene) .
- Pharmaceuticals: Managing sterile process valves and indicator lights in dust-hazardous zones (Zone 22) where powdered drugs or excipients are handled, leveraging the MTL 8115-DO-DC’s dust certification .
We prioritize professionalism in pre-sales and after-sales service: our team can assist with hazardous area classification checks, IS loop calculations, and documentation for regulatory audits related to the MTL 8115-DO-DC. All products include a one-year warranty. If you cannot find the model you need, please contact us immediately.
Contact Information
