ThermaGuard Expandable Enclosures
ThermaGuard Heated Enclosure Liner
IP65 Protection Standard certified

IP65 Protection Standard

Class 1 Division 2 certified

Class 1 Division 2

Hazardous Area T6 Rating certified

Hazardous Area T6 Rating

PID Controller Enclosures

PID Controller Enclosures by Terrapin Industrial are modular, expandable enclosures designed to protect process control instrumentation in extreme environments. Featuring IP65 protection, Class 1 Division 2 ratings, and optional ThermaGuard Heated Liners, these systems reduce installation time and costs by 30% while maintaining reliable operation in temperatures as low as -60°F.

Our Range of Products

ThermaGuard Expandable Enclosures

ThermaGuard Expandable Enclosures

  • IP65 dust & water protection
  • Fits 1, 2, or 3 instruments
  • Rated to -60°F/-51.1°C
ThermaGuard Heated Enclosure Liner

ThermaGuard Heated Enclosure Liner

  • 30-year heater cable lifespan
  • T6 hazardous area rated
  • 108W to 720W heat output

Frequently Asked Questions

What temperature environments are these enclosures rated for?

ThermaGuard enclosures maintain above 75°F internally in environments as cold as -60°F when equipped with the heated liner.

Are these enclosures rated for hazardous locations?

Can the enclosure be installed around existing instruments?

What materials are the enclosures made from?

How many instruments can one enclosure accommodate?

What is the expected lifespan of the heated liner's heater cable?

Can entry ports be customized in the field?

Didn't find what you're looking for?

Talk to our experts for custom solutions and tailored guidance.

Industries We Serve

Oil & Gas

Oil & Gas

Protects field instrumentation and process control equipment in extreme cold and hazardous classified locations.

Petrochemical & Chemical Manufacturing

Petrochemical & Chemical Manufacturing

Houses PID controllers and instrumentation safely in hazardous T6 areas and harsh chemical processing facilities.

Arctic & Cold Climate Operations

Arctic & Cold Climate Operations

Maintains safe operating temperatures for instruments in sub-zero arctic environments down to -60°F with heated liners.

Power Generation & Marine Offshore

Power Generation & Marine Offshore

Provides weatherproof, modular enclosure solutions for process control instrumentation on offshore platforms and power plants.

Didn't find what you're looking for?

Talk to our experts for custom solutions and tailored guidance.

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Why Oil & Gas and Process Industries Choose Terrapin Industrial

Patented Modular Installation Design

Terrapin's patented expandable enclosures install in stages or fully pre-assembled, reducing total installation time and cost by 30% without taking instruments offline.

Superior Cold & Hazardous Area Protection

IP65-rated GRP enclosures with T6-rated heated liners maintain instrument temperatures above 75°F even in -60°F arctic environments and classified hazardous areas.

Lower Long-Term Maintenance Costs

Individually replaceable parts and a 30-year heater cable life expectancy—versus 5 years for traditional heaters—dramatically reduce lifecycle maintenance costs and downtime.

Request a Quote for PID Controller Enclosures

Submit your requirements and a Terrapin Industrial expert will respond promptly with specifications, pricing, and configuration guidance.

Contact Us Today

For immediate assistance, feel free to give us a direct call at (281)-615-1429 You can also send us a quick email at