Product Introduction
1. Product Overview of Near-Infrared Online Thickness Gauge Supplier, Coating Web Inspection Instrument
The near-infrared online thickness gauge relies on the principle of near-infrared spectral absorption and is a non-contact online thickness and basis weight detection device for rolls. The entire system consists of an optical detection unit, servo scanning mechanism, data acquisition module, and industrial control software. It can be directly installed on roll production lines such as coating machines, casting machines, and laminating machines. The equipment can perform continuous, non-destructive online detection of flexible substrates such as polymer films, organic coatings, lithium battery separators, nonwoven fabrics, and adhesive tapes without stopping for sampling. It monitors the thickness uniformity across the full roll in real time, supports signal output for closed-loop adjustment of the production line, stabilizes product quality, and reduces waste loss. Widely used in roll industries such as lithium batteries, optical films, packaging, waterproof materials, and self-adhesive labels, it supports digital quality control in production.
2. Product Introduction of Near-Infrared Online Thickness Gauge Supplier, Coating Web Inspection Instrument
The near-infrared online thickness gauge adopts an optical non-contact measurement method. The measuring probe does not contact the material, preventing scratches or pressure damage to flexible rolls. A servo scanning mechanism drives the optical probe to scan across the full width of the roll, collecting thickness data in real time and generating information such as thickness curves, extreme values, and averages. The system features built-in data storage, over-limit audible and visual alarms, and production report export functions. It supports RS485, 4-20mA, Ethernet, and other signals, interfacing with PLCs, host computers, and MES systems to achieve closed-loop automatic control of coating application amount. It can be custom-designed based on production line width, material speed, and the substrate being measured, adapting to wide/narrow web and high-speed/medium-low-speed coating roll production lines. Compared with traditional contact thickness measurement and manual sampling inspection, it avoids issues such as sampling omissions, substrate scratches, and detection delays, making it an online inspection solution for improving quality and reducing consumption in roll coating processes. Suitable for detecting organic substrates such as organic coatings, polymer films, paper-based coatings, hot-melt adhesive layers, separators, release films, and aluminum-plastic films.
3. Functional Features of Near-Infrared Online Thickness Gauge Supplier, Coating Web Inspection Instrument
- Non-contact non-destructive measurement: Optical detection, probe does not touch material, no indentations, protects roll surface.
- Full-width servo scanning monitoring: Transverse scanning across the full roll, continuous thickness collection, real-time display of thickness curves.
- Simultaneous thickness and basis weight detection: Single device simultaneously outputs two key process data sets: thickness and basis weight.
- Automatic alarm for thickness over-limit: Customizable upper and lower limit thresholds, over-limit audible/visual + software pop-up alarm to intercept defective products.
- Closed-loop linkage control of production line: Outputs analog/digital signals, links with coating equipment to automatically adjust coating amount.
- Production data storage and traceability: Automatically saves production records, supports historical curve query and report export.
- Intelligent algorithm anti-interference: Built-in temperature compensation algorithm reduces the impact of dust and ambient temperature drift on measurement accuracy.
- Rich communication interfaces: RS485, 4-20mA, Ethernet, compatible with PLC, host computer, and MES system integration.
- Multi-substrate compatible detection: Films, coating layers, nonwoven fabrics, lithium battery separators, adhesive tapes, and packaging films can all be measured.
- Modular machine structure: Simple installation and commissioning, easy maintenance, can upgrade and retrofit old roll production lines.
- Remote data viewing: Supports remote access to thickness data, facilitating process personnel to monitor production line status remotely.
- Micron-level high-precision detection: Captures subtle thickness fluctuations, optimizes processes, and improves finished product yield.
4. Technical Parameters of Near-Infrared Online Thickness Gauge Supplier, Coating Web Inspection Instrument
Table
| Item | Parameter specifications |
|---|---|
| Measurement principle | Near-infrared spectral absorption method |
| Measurement method | Servo transverse scanning / fixed-point measurement, switchable |
| Measurement object | Organic films, polymer coatings, nonwoven fabrics, lithium battery separators, adhesive layers, and other organic substrates |
| Measurement Range | 0.1μm to 2000μm (customized based on substrate) |
| Measurement accuracy | ±0.2% FS (depending on material and site conditions) |
| Roll width | 50mm to 3200mm, non-standard customization supported |
| Production line material speed | 0～600m/min |
| Scanning movement speed | 0.1 to 2 m/s, adjustable |
| Communication interface | RS485, 4-20mA, Ethernet, switch signals |
| Alarm method | Audible and visual alarm, software pop-up alarm |
| 供电规格 | AC220V±10%，50Hz |
| Working environment temperature | 5℃～45℃ |
| Working relative humidity | ≤85%, no condensation |
| Data storage | Local hard disk storage, supports USB drive report export |
| Installation form | Rack-mounted, with supporting installation bracket for production line |
| 防护等级 | Electrical control cabinet IP54, optical probe IP50 |
Main Application Areas
- Coating Process Control — Monitor and control coating thickness in real-time to ensure uniform application and reduce material waste.
- Web Inspection — Inspect continuous webs (e.g., films, foils, textiles) for thickness variations to maintain product quality.
- Quality Assurance — Provide accurate thickness data for quality assurance documentation and compliance with industry standards.
Keywords：near-infrared thickness gauge, online thickness measurement, coating thickness gauge, web inspection system, non-contact thickness sensor, real-time thickness monitoring, industrial thickness gauge, AMT-HW-CHY
