Ex Proof Temperature Controller in Dubai | Temp Controller in UAE
The ATEX Temperature Controller and Limiter provides precise temperature regulation and independent overtemperature protection for cooling, refrigeration, HVAC, process-control, and industrial thermal systems installed in hazardous environments. As an Ex Proof Temperature Controller in Dubai, it helps facilities maintain stable process temperatures while protecting equipment from unsafe heat buildup.
The range supports applications both inside and outside hazardous areas. Available configurations provide temperature control, safety limitation, and optional power-control functions for systems operating in explosive gas or combustible-dust atmospheres.
The controllers cover a broad measuring range from 0°C to 450°C. Depending on the selected configuration, they operate from 230 VAC or a wide 24–265 VAC supply range. Enclosure protection options include IP64, IP66, and IP20 for field installation or control-cabinet mounting.
Suitable systems support Zones 1 and 2 for gas atmospheres and Zones 21 and 22 for combustible dust. They also integrate with ATEX heating, cooling, ventilation, refrigeration, process piping, vessels, tanks, and temperature-sensitive machinery.
Atex Hub supplies ATEX Temperature Controllers and Limiters across Dubai, Abu Dhabi, Sharjah, the UAE, Saudi Arabia, Qatar, Kuwait, Oman, Bahrain, Europe, Africa, and worldwide.
What Is an ATEX Temperature Controller and Limiter?
An ATEX Temperature Controller and Limiter is a protected control device that monitors a temperature sensor and manages connected equipment according to a selected setpoint.
The controller continuously compares the measured temperature with the desired operating temperature. It then switches or adjusts the connected heating, cooling, ventilation, or process equipment to keep the system close to the required value.
The temperature limiter provides a separate safety function. If the measured temperature rises above the permitted maximum, the limiter interrupts the controlled circuit or sends a shutdown command. This protects equipment, stored materials, processes, and surrounding hazardous areas from excessive surface temperatures.
The controller and limiter can support systems such as:
- Hazardous-area HVAC units
- Industrial refrigeration systems
- Cooling coils and heat exchangers
- Process vessels and storage tanks
- Pipe temperature-control systems
- Electrical heating circuits
- Ventilation and extraction equipment
- Temperature-sensitive production machinery
The controller does not replace the complete HVAC or refrigeration control panel. Instead, it forms an important part of the wider control and safety system.
Key Features of the Explosion Proof Temperature Controller
The Explosion Proof Temperature Controller combines accurate regulation, independent temperature limitation, flexible installation, and hazardous-area protection.
- Wide measuring range: Supports temperature measurement and control from approximately 0°C to 450°C.
- Controller and limiter functions: Regulates normal operating temperature while providing a separate overtemperature safety limit.
- Hazardous-area operation: Suitable configurations can operate directly within explosive gas and dust areas.
- External-panel option: Modular versions can operate outside the hazardous area inside a control cabinet.
- Zone 1 and Zone 2 suitability: Supports gas-hazard applications within the approved system design.
- Zone 21 and Zone 22 suitability: Supports combustible-dust environments.
- Multiple supply options: Available with 230 VAC input or a broad 24–265 VAC supply range.
- High control accuracy: Maintains stable operating conditions and reduces unnecessary temperature fluctuations.
- Independent safety shutdown: Stops the controlled process when temperature exceeds the permitted limit.
- Power-controller option: Selected configurations include temperature control, limiting, and power adjustment in one unit.
- Field-mounted enclosures: Available with IP64 or IP66 protection for demanding industrial environments.
- Control-cabinet mounting: Modular IP20 versions support top-hat or DIN-rail installation outside the hazardous zone.
- User-friendly operation: Clear settings and practical controls simplify commissioning and daily use.
- Low maintenance: Durable components support reliable long-term industrial operation.
- Custom configurations: Modular construction allows project-specific expansion and adaptation.
- Broad temperature-class compatibility: Suitable for ATEX products across different temperature classes when correctly selected.
How Does the Ex Proof Temperature Controller Work?
The Ex Proof Temperature Controller receives a signal from a connected temperature sensor installed on the pipe, vessel, cooling coil, heating element, process line, equipment surface, or controlled medium.
The controller compares the actual temperature with the selected setpoint. When the measured value moves outside the permitted control range, the controller sends a switching or control signal to the connected equipment.
In a cooling application, it can:
- Start a cooling fan when temperature rises
- Activate a refrigeration circuit
- Open a cooling-water valve
- Start a circulation pump
- Control a heat exchanger
- Send a signal to an HVAC control panel
- Stop cooling after reaching the lower setpoint
In heating applications, the controller switches or adjusts the heating circuit to maintain the selected temperature.
The limiter works independently from the normal control function. If temperature rises beyond the approved maximum, it initiates a safety shutdown. This prevents a controller fault, failed relay, damaged sensor, or process upset from allowing uncontrolled overheating.
Selected units also include a power-controller function. This allows the output to match the process demand rather than relying only on simple on-and-off operation.
The available configurations include:
- WEXRBL25: Temperature controller, limiter, and power-controller combination for installation within an ATEX area
- WEXR0025: Temperature controller for explosive gas and dust atmospheres
- WEXEXCMP: Modular controller and limiter for installation outside the ATEX area inside a control cabinet
Applications of the Hazardous Area Temperature Controller
The Hazardous Area Temperature Controller supports temperature regulation and safety limitation across many HVAC, cooling, refrigeration, and process applications.
- Industrial HVAC systems: Controls temperature sensors, cooling stages, and safety shutdown functions.
- Refrigeration plants: Monitors process temperatures and protects equipment from abnormal operating conditions.
- Cold-storage facilities: Supports temperature supervision around hazardous or flammable stored materials.
- Cooling-water systems: Controls pumps, valves, and heat-exchanger circuits according to temperature.
- Air-handling units: Supports supply-air, return-air, coil, and duct-temperature management.
- Hazardous-area ventilation: Activates fans or alarms when equipment temperature exceeds a selected limit.
- Oil and gas facilities: Controls temperatures around process skids, tanks, lines, shelters, and mechanical equipment.
- Chemical plants: Maintains stable temperatures in pipes, vessels, reactors, and production systems.
- Petrochemical facilities: Supports temperature regulation around hydrocarbons and process equipment.
- Refineries: Protects heated and cooled process components from abnormal temperatures.
- Pharmaceutical plants: Supports precise thermal control in production and storage processes.
- Food-processing facilities: Maintains process temperatures and protects temperature-sensitive equipment.
- Marine and offshore facilities: Supports HVAC and process temperature control in harsh and corrosive environments.
- Paint and coating plants: Controls temperatures where solvents and flammable vapours may occur.
- Industrial heating systems: Regulates heating jackets, hoses, pipes, vessels, and container heaters.
Technical Specifications of the ATEX Temperature Controller and Limiter
| Specification | Product Details |
|---|
| Product Type | ATEX temperature controller and safety limiter |
| Main Function | Temperature regulation and overtemperature protection |
| Measuring Range | Approximately 0°C to 450°C |
| Hazardous Gas Zones | Zone 1 and Zone 2 |
| Hazardous Dust Zones | Zone 21 and Zone 22 |
| Installation Options | Inside or outside the hazardous area |
| Controller-Limiter Model | WEXRBL25 |
| Temperature Controller Model | WEXR0025 |
| Control-Cabinet Model | WEXEXCMP |
| WEXRBL25 Supply | 230 VAC |
| WEXRBL25 Protection | IP64 |
| WEXR0025 Supply | 230 VAC |
| WEXR0025 Protection | IP66 |
| WEXEXCMP Supply | 24–265 VAC |
| WEXEXCMP Protection | IP20 |
| Mounting Options | Field mounting or DIN-rail/control-cabinet installation |
| Control Functions | Regulation, limiting and optional power control |
| Configuration | Standard or project-specific modular design |
| Primary Industries | HVAC, chemical, oil and gas, food, pharmaceutical and process industries |
The WEXRBL25 combines temperature regulation, limiting, and power control inside the hazardous area. It operates at 230 VAC, covers 0–450°C, and provides IP64 protection.
The WEXR0025 provides direct temperature regulation in explosive gas and dust atmospheres. It uses 230 VAC, covers 0–450°C, and offers IP66 protection.
The WEXEXCMP provides temperature control and limitation outside the hazardous area. It supports 24–265 VAC, covers 0–450°C, provides IP20 protection, and uses a modular DIN-rail design.
Control Functions, Safety Limitation and Installation Options
The controller and limiter perform two different but connected functions.
The control function maintains the normal operating temperature. It can switch equipment on and off or adjust power according to the difference between the measured temperature and the selected setpoint.
The limiting function protects the process when temperature exceeds a separately defined maximum value. This provides an additional safety layer if the main controller, sensor, switching device, or connected equipment develops a fault.
Important operational benefits include:
- Stable process temperatures
- Reduced overheating risk
- Improved equipment protection
- Lower energy waste
- Better product consistency
- Independent safety shutdown
- Flexible controller placement
- Reduced control-panel complexity
- Integration with alarms and interlocks
- Support for process-specific configurations
Field-mounted versions suit installations where the operator needs the controller inside the classified area. Their IP64 or IP66 enclosures protect against dust and water exposure.
The modular WEXEXCMP version suits projects where the controller remains outside the hazardous area in a safe control cabinet. DIN-rail mounting simplifies integration with relays, contactors, PLCs, circuit breakers, alarms, and building-management systems.
Complete system approval covers combinations of electrical and non-electrical components used according to the approved installation and operating instructions.
Selection, Installation and Maintenance
Correct selection helps the controller maintain reliable operation and hazardous-area compliance.
- Determine the required control temperature and maximum safety limit.
- Confirm that the 0–450°C measuring range covers the application.
- Identify whether the controller will sit inside or outside the hazardous area.
- Select WEXRBL25 when control, limiting, and power adjustment are required in the Ex area.
- Select WEXR0025 for direct hazardous-area temperature control.
- Select WEXEXCMP for modular control-cabinet installation outside the Ex area.
- Confirm the required 230 VAC or 24–265 VAC supply.
- Verify whether IP64, IP66, or IP20 suits the installation environment.
- Confirm the gas or dust zone classification.
- Match the temperature class to the connected equipment and process.
- Use a compatible and correctly positioned temperature sensor.
- Install the control sensor near the normal temperature-control point.
- Position the limiter sensor at the highest likely temperature location.
- Keep sensor wiring separated from high-current power cables.
- Use approved cable glands, terminals, and protective earth connections.
- Test controller and limiter operation during commissioning.
- Confirm the independent shutdown setpoint.
- Inspect sensors, wiring, terminals, seals, and enclosures regularly.
- Record temperature-limit tests according to site maintenance procedures.
- Permit only qualified hazardous-area technicians to modify or repair the system.
Certifications, Standards and Compliance
The ATEX Temperature Controller and Limiter uses system approval with an EC/EU type-examination certificate under Directive 2014/34/EU and supports gas Zones 1/2 and dust Zones 21/22.
Why Choose Atex Hub for Ex Proof Temperature Controllers?
Atex Hub supplies Ex Proof Temperature Controllers and Limiters for hazardous-area HVAC, refrigeration, heating, cooling, ventilation, and process-control projects.
- Supplies Ex Proof Temperature Controllers across Dubai, Abu Dhabi, Sharjah, the UAE, Saudi Arabia, Qatar, Kuwait, Oman, Bahrain, Europe, Africa, and worldwide.
- Provides controllers for gas Zones 1 and 2.
- Supports combustible-dust Zones 21 and 22.
- Offers field-mounted and control-cabinet configurations.
- Supplies combined controller, limiter, and power-controller units.
- Supports temperature ranges up to 450°C.
- Assists with sensor, setpoint, supply-voltage, and enclosure selection.
- Supports HVAC, refrigeration, chemical, oil and gas, pharmaceutical, and industrial projects.
- Supplies sensors, relays, contactors, alarms, barriers, and control accessories.
- Provides technical submittals and hazardous-area documentation.
Frequently Asked Questions
1. What is an ATEX Temperature Controller and Limiter?
An ATEX Temperature Controller and Limiter regulates normal operating temperature and provides an independent overtemperature shutdown function.
2. Is the Ex Proof Temperature Controller suitable for Dubai?
Yes. The Ex Proof Temperature Controller in Dubai supports correctly engineered hazardous-area HVAC, cooling, heating, and process systems.
3. What temperature range does it support?
The controllers provide a measuring range from approximately 0°C to 450°C.
4. Which hazardous zones are supported?
Suitable configurations support Zones 1 and 2 for gas and Zones 21 and 22 for dust.
5. Can the controller operate inside a hazardous area?
Yes. The WEXRBL25 and WEXR0025 configurations support installation within approved hazardous areas.
6. Can it be installed outside the hazardous area?
Yes. The WEXEXCMP configuration mounts inside a control cabinet outside the hazardous area.
7. What supply voltages are available?
Available configurations use 230 VAC or a broad 24–265 VAC supply range.
8. What is the difference between a controller and limiter?
The controller maintains the normal setpoint, while the limiter shuts down the system if temperature exceeds the maximum safe value.
9. Can it control an HVAC cooling system?
Yes. It can form part of a control system for fans, pumps, valves, refrigeration equipment, heat exchangers, and HVAC safety interlocks.
10. Can Atex Hub supply complete temperature-control systems?
Yes. Atex Hub supplies controllers, limiters, sensors, relays, contactors, control panels, alarms, and hazardous-area accessories.
Conclusion
The ATEX Temperature Controller and Limiter provides accurate temperature regulation and independent overtemperature protection for hazardous-area HVAC, cooling, refrigeration, heating, and industrial process systems.
The available configurations cover temperatures from 0°C to 450°C and support installation both inside and outside classified areas. The WEXRBL25 combines temperature control, limitation, and power adjustment. The WEXR0025 provides IP66 hazardous-area temperature control, while the modular WEXEXCMP supports control-cabinet installation with a wide 24–265 VAC input.
Support for Zones 1 and 2 in gas atmospheres and Zones 21 and 22 in combustible-dust environments makes the range suitable for chemical, oil and gas, pharmaceutical, food-processing, refrigeration, ventilation, and industrial thermal-control applications.
For companies seeking a reliable Ex Proof Temperature Controller in Dubai, this range provides precise control, dependable temperature limitation, flexible mounting, and certified hazardous-area protection.
Atex Hub supplies ATEX Temperature Controllers and Limiters across Dubai, the UAE, GCC countries, Europe, Africa, and worldwide.
