Rice Lake Intrinsic Safety Barriers FM Approved Hazardous Area Protection

Rice Lake Intrinsic Safety Barriers – Hazardous Area Protection for Weighing Systems

Rice Lake Intrinsic Safety Barriers are designed to provide safe and reliable operation of weighing systems in hazardous and potentially explosive environments. These barriers limit voltage and current levels entering hazardous locations, ensuring that electrical energy remains below ignition thresholds for combustible gases, vapors, dust, and other hazardous atmospheres.

Engineered for industrial weighing applications, each barrier system incorporates excitation, sense, and signal barriers to protect load cells and associated weighing equipment. Available in both external enclosure and chassis-mount configurations, these intrinsically safe barriers are ideal for use in chemical processing plants, grain handling facilities, petroleum operations, pharmaceutical manufacturing, food processing, and other hazardous-area installations.

Rice Lake utilizes high-quality R Stahl® and Pepperl+Fuchs® barrier technologies that are Factory Mutual (FM) approved and available with additional certifications including UL, CSA, CE, ATEX, IECEx, and cULus approvals depending on model selection.

Key Features

• Intrinsically safe barrier protection for hazardous locations

• Limits voltage and current to safe energy levels

• Excitation, sense, and signal barriers available

• External enclosure or chassis-mount configurations

• Compatible with industrial weighing systems and load cells

• Supports hazardous area instrumentation

• R Stahl® and Pepperl+Fuchs® barrier options

• Factory Mutual (FM) approved designs

• Available UL, CSA, CE, ATEX, IECEx, and cULus certifications

• Designed for explosive and combustible environments

• DIN rail mounting options available

• Suitable for single and multiple load cell installations

• Reliable protection without moving parts

• Industrial-grade construction for long-term operation

• Compatible with intrinsically safe weighing applications

Available Barrier Types

• Excitation Barriers

• Sense Barriers

• Signal Barriers

• RS-232 Communication Barriers

• RS-422 Communication Barriers

• Single Load Cell Barrier Kits

• Multiple Load Cell Barrier Kits

• External Enclosures and DIN Rail Accessories

Common Part Numbers

• 31201 – + Excitation Barrier

• 31202 – ± Excitation Barrier

• 30263 – ± Signal Barrier

• 30264 – ± Sense Barrier

• 31542 – RS-232 Barrier

• 221660 – Pepperl+Fuchs Signal Barrier

• 221661 – Pepperl+Fuchs Sense Barrier

• 221662 – Pepperl+Fuchs Excitation Barrier

• 221779 – Pepperl+Fuchs High-Power Excitation Barrier

• 221663 – Pepperl+Fuchs High-Power Excitation Barrier

Applications

• Hazardous location weighing systems

• Grain elevators and feed mills

• Chemical processing facilities

• Petroleum and fuel operations

• Pharmaceutical manufacturing

• Food and beverage processing

• Bulk material handling

• Dust and combustible atmosphere environments

• Industrial automation systems

• Process control installations

• Tank and hopper weighing systems

• Load cell protection systems

Certifications

• FM Approved

• UL Listed

• CSA Certified

• CE Marked

• ATEX Approved (select models)

• IECEx Approved (select models)

• cULus Listed (select models)

Package Includes
Rice Lake Intrinsic Safety Barrier or Barrier Kit as specified by the selected part number. Enclosures, DIN rails, grounding accessories, and additional components may be sold separately depending on configuration.

Please verify the required barrier type, voltage requirements, certifications, and load cell compatibility before ordering.