ATEX Weight Transmitters – Certified Hazardous Area Displays & Controllers
Our ATEX weight transmitters are certified display and control units designed for use with load cells and weighing platforms in potentially explosive atmospheres. Approved for Zone 1, Zone 2, Zone 21, and Zone 22 classified hazardous areas, they provide safe, accurate weight readout and process control in chemical processing, pharmaceutical manufacturing, oil and gas, paint production, and any environment where flammable gases, vapours, or combustible dusts may be present.
In a hazardous area weighing system, the weight indicator is the electrical interface between the load cell and the operator — and as such, it must carry the appropriate ATEX certification for the zone in which it is installed. Our ATEX indicators are available in intrinsically safe (Ex i) designs, where the indicator can be located in a safe area connected to the hazardous zone via a certified safety barrier, and in explosion-proof (Ex d) enclosures for installation directly within the hazardous zone. Panel mount, wall mount, and portable configurations are available to suit a wide range of installation requirements. Many models also support setpoint control, data logging, and connectivity for integration with batch management and process control systems.
Key Features
- ATEX certified for Zone 1, Zone 2, Zone 21, and Zone 22 hazardous area classifications
- Intrinsically safe (Ex i) and explosion-proof (Ex d) designs available for different zone and installation requirements
- Compatible with standard mV/V load cells for use with ATEX platforms, floor scales, and custom weighing systems
- Setpoint control outputs for automated filling, batching, and process control in hazardous areas
- Data logging and connectivity — RS-232, RS-485, and Ethernet for integration with ERP and batch systems
- Panel mount, wall mount, and portable configurations for flexible hazardous area installation
- IP65+ rated enclosures for chemical and washdown environments
- Full ATEX certification documentation supplied as standard
Common Applications
- Chemical processing — weight display and batching control for flammable solvent and reagent handling
- Pharmaceutical manufacturing — process weighing and dispensing control in solvent-rich environments
- Oil and gas — weight indication and control in Zone 1 and Zone 2 process and storage areas
- Paint and coatings production — batching and filling control for flammable raw materials
- Grain and flour milling — Zone 21 and Zone 22 dust hazard weight indication and silo monitoring
- Tank and vessel weighing — continuous weight monitoring and level control in hazardous area installations
All ATEX weight indicators are supplied with full certification documentation. Contact our technical team before purchasing to confirm the correct zone classification, equipment category, gas group, and temperature class for your specific hazardous area installation.
Frequently Asked Questions
Can an ATEX weight tranmitter be located outside the hazardous zone?
Yes — this is one of the key advantages of intrinsically safe (Ex i) system design. The load cell and platform are located in the hazardous zone, connected via a certified Zener barrier or galvanic isolator to an Ex i indicator located in the safe area. This minimises the amount of ATEX-certified equipment required in the hazardous zone and simplifies installation and maintenance. Explosion-proof (Ex d) indicators are installed directly within the hazardous zone.
Will an ATEX weight indicator work with my existing load cells?
ATEX indicators are compatible with standard mV/V load cells, but in a hazardous area installation the load cells themselves must also be ATEX certified for the zone. The complete system — load cells, cabling, junction boxes, safety barriers, and indicator — must be assessed and certified as a whole. Contact our technical team with your existing load cell details and zone classification for compatibility advice.
Can ATEX weight indicators be used for process control and batching?
Yes. Many models in our range include programmable setpoint outputs for controlling valves, pumps, conveyors, and other process equipment based on weight. This enables automated filling, batching, and dosing operations in hazardous areas. Data logging and connectivity options support integration with batch management, ERP, and SCADA systems.
What is the difference between Ex i and Ex d ATEX protection for indicators?
Ex i (intrinsically safe) limits electrical energy in the circuit to levels that cannot ignite an explosive atmosphere — the indicator can be in the safe area with only the sensor in the hazardous zone. Ex d (explosion-proof) contains any internal ignition within a robust enclosure — the indicator is installed directly in the hazardous zone. Ex i is generally preferred for weight indicators as it allows the display to be in the safe area, improving operator access and reducing maintenance complexity.
Is UKAS calibration available for ATEX weighing systems?
Yes. UKAS-traceable calibration certificates are available on request for ATEX weighing systems including indicators and load cells. Calibration in hazardous areas must follow appropriate safe working procedures for the classified zone. Contact our team for calibration, commissioning, and service support specific to your hazardous area installation.
