In the lithium battery industry, roller hearth kilns are core continuous kiln equipment for the high-temperature sintering of key electrode materials such as cathode and anode materials. Accurate monitoring of gas flow, temperature, micro positive pressure/micro negative pressure, etc., inside the kiln is critical to ensuring the materials form the target crystal structure and stable stoichiometric ratio. It is a key link in guaranteeing the electrochemical performance and batch consistency of batteries.
01 Monitoring Requirements for Roller Hearth Kilns
A roller hearth furnace consists of a long kiln body formed by the interconnection of multiple reaction sections; it features a complex gas flow architecture comprising a main inlet, multiple branched inlets, and a main outlet. The unique nature of its operating conditions dictates that monitoring equipment must satisfy the following requirements:
High Precision and Long-Term Stability: Fluctuations in process gas flow and pressure inside the kiln directly affect the sintering atmosphere and crystallinity of materials. Monitoring equipment must have a long-term operational accuracy error of ≤1% and an annual drift of ≤0.5%FS to avoid performance differences between batches.
Low-Pollution Material Requirements: Components in contact with process gases must adopt copper-free, zinc-free, low-precipitation materials such as 316L stainless steel and PTFE to prevent heavy metal ions like copper, lead, and zinc from precipitating and contaminating lithium battery materials.
Working Condition Adaptability: The equipment must adapt to high and low temperature environments, corrosive atmospheres, and dust conditions in the kiln area, with anti-clogging, impact resistance, and a protection rating of IP65 or higher.
Rapid Response and Mathematical Processing Capabilities: Supports millisecond-level response speeds and adapts to the dynamic adjustment of process parameters; simultaneously supports industrial communication protocols such as RS485 and Modbus, enabling real-time data uploading and remote monitoring.
02 Core Products Precisely Matching Full-Scenario Monitoring
Tailored to the monitoring needs of roller hearth kilns, MEOKON has built a core product matrix of “flow + differential pressure + pressure”, suitable for both new line construction and existing kiln renovation.
MD-S975 Gas Flow Monitor
The MD-S975 Gas Flow Monitor is specifically designed for monitoring the flow of process gases in lithium battery roller hearth kilns. It is compatible with various process media such as nitrogen, argon, oxygen, and protective gas, meeting the precise flow control requirements of multi-channel gas inlet and segmented exhaust in kilns:
- Adopts thermal MEMS mass flow measurement technology, immune to temperature and pressure fluctuations, achieving high-precision measurement of ±1%FS with long-term operational stability.
- Components in contact with media are made of copper-free and zinc-free materials, preventing heavy metal precipitation and contamination of lithium battery materials, meeting the cleanliness requirements of the new energy industry.
- Built-in anti-dust and anti-clogging structure design, adapting to dusty process gas conditions in kilns.
- Supports RS485/Modbus communication protocol, which can be directly connected to the kiln DCS system to realize real-time flow data collection, remote monitoring, and closed-loop process control.
MD-S220 Digital Micro Differential Pressure Gauge
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The MD-S220 Digital Micro Differential Pressure Gauge is specially designed for monitoring micro pressure/micro differential pressure inside roller hearth kilns. It enables real-time monitoring of the pressure difference between the inside and outside of the kiln body and between kiln sections, which is key equipment for ensuring stable atmosphere inside the kiln and preventing material oxidation caused by air intrusion:
- Equipped with a high-precision imported micro differential pressure sensor, with a measurement accuracy of ±0.5%FS, capable of capturing tiny pressure fluctuations inside the kiln.
- Equipped with an anti-clogging sampling structure, adapting to dusty and high-temperature conditions in kilns, ensuring long-term operational stability.
- Supports high and low pressure alarms, which can be linked with the kiln control system to realize real-time early warning of pressure anomalies.
- Compatible with the installation method of traditional mechanical micro differential pressure gauges, facilitating the renovation and upgrading of existing kilns and reducing construction costs.
MD-S560 Digital Remote Pressure Gauge
The MD-S560 Digital Remote Pressure Gauge is suitable for pressure monitoring in the main process gas pipe, branch pipes, and exhaust systems of roller hearth kilns, enabling real-time collection and upload of pressure data across the entire gas path:
- Supports 4-20mA analog/RS485 digital signal dual output, with RS485 communication transmission distance exceeding 1000 meters, adapting to the long-distance data transmission needs of kilns.
- Components in contact with media are made of 304/316L stainless steel, compatible with nitrogen, protective gas, and other process media, with corrosion resistance and pollution resistance.
- Features zero calibration and customizable filter parameters, adapting to fluctuations in kiln working conditions and ensuring stable and reliable pressure data.
03 Full-Link Integrated Monitoring Solution
MEOKON provides not only individual products for roller hearth kilns but also a practical, scalable, and cost-effective full-link gas path monitoring solution tailored to the entire lithium battery sintering process, enabling integrated monitoring of all parameters: flow, pressure, and differential pressure.
- Closed-Loop Process Control: Linking flow, pressure, and differential pressure data to achieve precise adjustment of the atmosphere inside the kiln, ensuring consistent process parameters across different temperature zones and batches, and reducing risks of material oxidation and poor crystallization.
- Dual Adaptability for New Lines/Renovations: The solution supports modular configuration, which can be directly adapted to the gas path design of newly built roller hearth kilns or quickly connected to the control system of existing kilns, enabling convenient renovation and construction.
- Cost-Saving and Efficiency-Boosting Advantages: Compared with similar imported products, the MD-S975 eliminates the need for additional cooling devices, long straight pipe sections, and material certification testing, reducing the comprehensive cost per measuring point by 10%-15% while lowering long-term maintenance costs for better economic efficiency.
- Smart Factory Compatibility: The solution supports data integration with MES and SCADA systems, enabling traceability of process data, meeting the compliance requirements of the lithium battery industry for production process data, and reserving expansion space for subsequent smart factory upgrades.
04 Corporate Strength Endorsement
As a national-level “Specialized, Refined, Special, and Innovative” Little Giant enterprise, MEOKON focuses on safe monitoring of “water, wind, and gas” in smart scenarios such as smart fire protection, smart water services, building parks, and digital factories. It provides a three-in-one IoT solution: multi-category IoT sensing terminals, on-site operation and maintenance services directly accessible to customers, and a smart device health management cloud platform. After more than ten years of development, MEOKON has become a leader in wireless smart terminals for safe monitoring of urban “water, wind, and gas”, with over 120 intellectual property rights and 140+ product certifications, delivering stable and reliable smart terminals and IoT perception monitoring solutions to countless customers.
Post time: May-12-2026