Quartz Tube Bi-Colour Level Gauges
Quartz tube bi-colour level gauges are reliable and highly visible liquid level measurement instruments designed for continuous level indication in industrial process applications. By utilizing a quartz glass tube combined with a bi-colour indication system, these level gauges clearly display vapor and liquid phases, ensuring safe and accurate monitoring under high temperature and high-pressure conditions.
The bi-colour quartz tube level gauge displays red for vapor phase and green for liquid phase, allowing operators to instantly distinguish fluid states even in harsh environments. With excellent corrosion resistance, pressure resistance, and long service life, quartz tube bi-colour level gauges are widely used in petrochemical, power generation, chemical processing, and other safety-critical industries.
Level Measuring Instruments Description
Bi-Colour Quartz Glass Tube Level Gauges-Features
-
Clear bi-colour level indication: red vapor phase, green liquid phase
-
High-strength quartz glass tube with excellent thermal stability
-
Suitable for high pressure and high temperature applications
-
Multiple material options for corrosive and non-corrosive media
-
Long center-to-center distance options, customizable up to 2000 mm
-
Simple structure with low maintenance requirements
-
Optional electric heating and self-limiting temperature heating
-
Compatible with industrial standard flanges and connections
These features make quartz tube bi-colour level gauges an ideal solution for continuous and reliable liquid level indication.
Quartz Tube Bi-Colour Level Gauges-Applications
Quartz tube bi-colour level gauges are widely applied in:
-
Boilers and steam drums
-
Petrochemical and chemical processing plants
-
Power generation systems
-
Oil & gas production facilities
-
Industrial storage tanks and vessels
-
Process control systems requiring visual level monitoring
-
Safety-critical level indication applications
The high visibility and durability of bi-colour quartz tube level gauges make them suitable for both indoor and outdoor industrial environments.
Level Measuring Instruments Parameter
| Parameter | Specification |
| Bi Color quartz tube Level Gauge-Type | INBC113 |
| Center-Center Distance | 300, 500, 800, 1100, 1400, 1700, 2000 mm (custom made) |
| Indicate Mode | Single color, bi-color (red vapor phase, green liquid) |
| Material | Carbon steel, 304, 316L, 1Cr18Ni9Ti, 0Cr18Ni9, 304 + PTFE lining |
| Nominal Pressure | PN6–PN100 (×0.1 MPa); 304 + PTFE ≤ PN40; PP ≤ 100℃ |
| Working Temperature | Carbon steel ≤ 350℃; Stainless steel ≤ 450℃; 304 + PTFE ≤ 200℃; PP ≤ 100℃ |
| Drain Valve | Drain needle valve (customizable) |
| Vent Valve | Vent needle valve (customizable) |
| Process Flange | DN20 / RF HG/T 20592-09 |
| Heat Steam Interface | ZG1/2″ male screw thread |
| Heat Steam Pressure | ≤ 1.0 MPa |
| Electric Heating | Self-limiting temperature heating (optional) |
| Steel Ball Self-Closing Pressure | ≥ 0.3 MPa |
| Power Supply | 24V DC, 36V AC |
| Environment Temperature | −50 ~ +80℃ |
Instrava OEM/ODM
Tailored Sourcing & Customization: Getting You the Exact Product You Need
As your trusted supplier and sourcing partner, we bridge the gap between your custom requirements and China’s vast manufacturing capabilities.
Finding the right product in a massive supply chain can be challenging. That is where we step in.
As a curated industrial supplier, our core value is simple: we stand in your shoes to help you procure the most optimal products. Whether you are an EPC contractor needing specialized technical compliance, an OEM equipment manufacturer looking for custom branding, or an industrial distributor/trader seeking competitive edge, we customize and tailor products to fit your exact procurement needs.
How We Customize to Fit Your Procurement Needs
For EPC Contractors & Engineers: We custom-configure instruments and devices to match your precise datasheets—tailoring process connections, exotic materials, signal protocols, and managing third-party calibration and testing so you get project-ready solutions.
For OEM Equipment Manufacturers: We provide comprehensive OEM/ODM customization, including custom housing, labeling, branding (private labeling), and tailored technical specifications to seamlessly integrate with your machinery.
For Industrial Distributors & Traders: We offer flexible customization in packaging, product ranges, and technical parameters, helping you differentiate your portfolio and win more local bids.
Why Partner with Us for Custom Sourcing?
One-Stop Engineering Alignment: You don’t have to deal with multiple factories. We translate your technical requirements into precise manufacturer blueprints.
Strict Quality & Compliance Safeguard: We oversee the entire customization and production process in China, ensuring the final customized product meets your local standards and certifications.
Our Ultimate Value: We don’t just sell what’s on the shelf. We find, customize, and deliver the most suitable and cost-effective product for your unique application.
What are quartz tube bi-colour level gauges used for?
Quartz tube bi-colour level gauges are used for continuous visual liquid level monitoring in industrial vessels, boilers, and tanks. They provide clear red and green colour indication to distinguish vapor and liquid phases, making them suitable for high-temperature and high-pressure process control applications.
How does a bi-colour quartz tube level gauge indicate liquid level?
A bi-colour quartz tube level gauge works based on optical refraction and reflection. The liquid phase reflects light as green, while the vapor phase appears red, allowing operators to clearly identify liquid levels even under harsh operating conditions.
What is the maximum working temperature of quartz tube bi-colour level gauges?
The maximum working temperature depends on the material selection. Carbon steel models can operate up to 350℃, stainless steel models up to 450℃, and PTFE-lined versions up to 200℃. This makes quartz tube bi-colour level gauges suitable for high-temperature industrial environments.
Are quartz tube bi-colour level gauges suitable for high-pressure applications?
Yes. Quartz tube bi-colour level gauges support nominal pressure ratings from PN6 to PN100, making them suitable for a wide range of high-pressure industrial applications, including boilers, petrochemical systems, and power plants.
Can quartz tube bi-colour level gauges be customized?
Quartz tube bi-colour level gauges can be customized in terms of center-to-center distance, materials, pressure rating, heating method, valve configuration, and flange standards to meet specific process requirements and operating conditions.
What safety features are included in quartz tube bi-colour level gauges?
Most quartz tube bi-colour level gauges are equipped with steel ball self-closing safety devices, drain and vent valves, and optional heating systems. These features enhance operational safety and reliability in safety-critical and process control applications.
Why Trust Instrava?
We select manufacturers from a neutral, impartial standpoint, always with your best interests in mind.
Our very existence depends on helping you source the products that are the perfect fit for your needs.
Based in China, we are able to conduct on-site inspections of production environments and product quality firsthand.
We help you avoid intermediaries posing as factories.
We facilitate smoother after-sales support, eliminating time zone issues and the delays often associated with dealing directly with factories.
Our multilingual team ensures effective communication.
For a trading startup, every interaction with a client is a precious opportunity—a sign that you are willing to place your trust in us and give us the chance to prove ourselves.
In the digital age, while information is easily accessible, misconceptions often cloud the trust between people.
Instrava relies entirely on trust; it is our core philosophy and the foundation of our existence in society. It is the fundamental basis for our long-term growth and our commitment to serving the community.
Please place your trust in us.
