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Flameproof Weighing Indicator CTG-F Series: The Safe Weighing Core Built for Hazardous Areas
In oil refineries, chemical processing plants, and pharmaceutical manufacturing facilities, the air itself can be dangerous. The presence of flammable gases, vapors, or combustible dust creates an environment where a single electrical spark—even a microscopic one from a standard electronic device—could trigger a catastrophic explosion. In these designated "hazardous areas," the equipment you use must be engineered to eliminate that risk entirely. Weighing is a critical part of your production process, and it must be done safely.
At UP Scales, we supply the CTG-F Series Flameproof Weighing Indicator—a specialized, explosion-proof terminal designed specifically for these volatile environments. By combining high-precision weighing electronics with a rugged, heavy-duty cast enclosure, the CTG-F Series allows you to safely and accurately measure materials in the most dangerous industrial zones.
What is a Flameproof Weighing Indicator?
A flameproof weighing indicator (often referred to as an explosion-proof indicator) is a weighing terminal housed in an enclosure designed to prevent internal sparks or explosions from igniting the surrounding hazardous atmosphere.
In industrial safety standards, there are two primary methods of protection:
- Intrinsic Safety (Ex ia/ib): Limits the electrical energy in the circuit so it is incapable of causing ignition.
- Flameproof / Explosion-Proof (Ex d): Encases the electronics in a robust housing designed to withstand an internal explosion and prevent flames from escaping into the external environment.
The CTG-F Series utilizes the Flameproof (Ex d) method. Its heavy-duty cast housing is built like a fortress, ensuring that even if a fault occurs inside the indicator, the hazardous gases outside remain safe.
Why Choose the CTG-F Series Flameproof Indicator?
Certified Protection for Zone 1 and Zone 2
The CTG-F Series is engineered for the real world of hazardous operations. It is certified for use in Zone 1 (areas where an explosive atmosphere is likely during normal operation) and Zone 2 (areas where it is unlikely but possible). It is approved for Gas Groups IIA and IIB, covering a wide range of common industrial gases such as propane, ethylene, and solvents.
Heavy-Duty Cast Enclosure
Safety requires structural integrity. The CTG-F indicator is housed in a thick, cast-metal enclosure with securely bolted covers. This robust construction not only contains internal explosions but also protects the sensitive electronics from corrosion, moisture, dust, and physical impact.
High-Visibility Display for Dark Environments
Hazardous areas are often dimly lit or visually obstructed by equipment. The CTG-F Series features a high-contrast, bright LED display. This ensures that operators can clearly read the weight from a safe distance, even while wearing protective gear or working in low-light conditions.
Seamless Integration with Explosion-Proof Systems
To function safely, a flameproof indicator must be paired with the correct load cells. The CTG-F Series is designed to interface seamlessly with explosion-proof load cells (usually intrinsically safe load cells or those housed in their own flameproof enclosures) to create a complete, compliant weighing system. Whether you are weighing chemical drums, solvent tanks, or bulk powders, the CTG-F is the safe brain of the operation.
Technical Specifications
| Feature | Specification |
|---|---|
| Model | CTG-F Series Flameproof Weighing Indicator |
| Protection Method | Flameproof (Ex d) |
| Hazardous Area Rating | Suitable for Zone 1 and Zone 2 |
| Gas Group | IIA and IIB |
| Temperature Class | T1 to T6 (Depending on specific certification) |
| Enclosure Material | Heavy-duty Cast Alloy / Cast Aluminum (Corrosion-resistant) |
| Display | Bright, High-Contrast LED |
| Application | Hazardous area weighing, batching, and inventory control |
| Compatibility | Designed for use with appropriate explosion-proof load cells |
Ideal Applications
The CTG-F Series Flameproof Indicator is essential for any weighing operation located in a hazardous zone:
- Oil and Gas Industry: Weighing chemicals, catalysts, and additives at refineries and petrochemical plants.
- Chemical Manufacturing: Formulation and batching of solvents, resins, and flammable liquids.
- Paint and Coatings: Measuring volatile solvents and pigments.
- Pharmaceuticals: Weighing active ingredients in areas where combustible vapors may be present.
- Hazardous Waste Storage: Inventory management of explosive or flammable materials.
- Mining: Weighing materials where methane or combustible dust is a risk.
Why Buy from UP Scales?
As a trusted supplier of industrial weighing components, UP Scales offers:
- Genuine, Certified Products: We provide indicators that meet strict safety standards for hazardous areas.
- Application Support: We help you match the CTG-F indicator with the correct explosion-proof load cells and wiring to ensure a fully compliant system.
- Competitive Pricing: Direct pricing for critical safety equipment.
- Technical Guidance: Expert advice on installation and hazardous area compliance.
Model CTG-F Series Flameproof Weighing Indicator
Application Hazardous area weighing, batching, and inventory control
Display Bright, High-Contrast LED
Enclosure Heavy-duty Cast Alloy / Cast Aluminum (Corrosion-resistant)
A Flameproof (Ex d) indicator uses a heavy cast enclosure to contain any internal explosion, preventing it from spreading to the hazardous area. An Intrinsically Safe (Ex i) indicator uses electronic barriers to limit energy so that no spark can occur. The CTG-F Series uses the Flameproof method, which is highly robust and widely used in Zone 1/2 environments.
The CTG-F Series is certified for Gas Groups IIA and IIB, which include a wide range of industrial gases such as propane, methanol, ethylene, and solvents. It is not typically rated for Group IIC (which includes acetylene and hydrogen), so you must verify your specific site requirements.
You must use explosion-proof load cells. Standard load cells are not safe for hazardous areas. The CTG-F Series is designed to connect to suitable intrinsically safe or flameproof load cells. Our team can help you select the correct, matching load cells for your system.
No. The window for the LED display is made of heavy-duty, clear glass or armored glass. The bright LED digits are designed specifically to shine through this window, providing excellent visibility for the operator.
Yes, the cast housing required for flameproof protection makes it significantly heavier and bulkier than standard plastic indicators. It is designed to be mounted securely on a wall, column, or machinery using heavy-duty brackets.
