Video tutorial
CYY-TL5 Carbon-Sulfur Analysis · CYY-LK7 Liquid Iron Thermal Analysis · CYY-LK2 Carbon-Silicon Analysis · CYY-W330 Handheld · CYY-W600 Large Screen · CYY-W660 Wireless
CYY-TL5 Infrared Carbon–Sulfur Analyzer — Product Introduction Video
CYY-TL5 Arc Infrared Carbon-Sulfur Analyzer — Product Promotion

Product Introduction
CYY-TL5 Arc Infrared Carbon-Sulfur Analyzer — Test C% and S% in just 35 seconds per sample. Price is only 1/5 of OES emission spectrometers. CE certified, global shipping available.
Key Features: • Combined arc melting and infrared absorption method • Analysis time: ~35 seconds/sample • Carbon range: 0.005% – 10.0000% • Sulfur range: 0.0005% – 0.3500% • Integrated electronic balance with 0.0001g precision • Windows software displays real-time analysis curves • Complete configuration: arc furnace, infrared chamber, computer, printer, balance
Applications: • Machine Shop — Incoming steel inspection • Laboratory — Chemical composition verification • Machining Workshop — Grade confirmation (35#, 45#, Q235, Q345, alloy steel, tool steel, free-cutting Y15) • Steel Plant — Final QC check & COA reporting • Research Institute — Metal composition analysis
Why Choose CYY-TL5? • Cost is only ~1/5 of an OES spectrometer • Lower operating costs (requires only oxygen + flux, no argon) • Simple calibration with included reference samples • CE certified, English software, global delivery
Contact Changyouyi: Email: russ.gu77@gmail.com Hotline: +86 18795833542 Website: vn.cyypro.com
🏭 Apps
- Machine Shop — Incoming Steel Inspection
- Laboratory — Verify Chemical Composition
- Machining Shop — Confirm Steel Grade (35#, 45#, Q235, Q345, Alloy Steel, Tool Steel)
- Steel Plant — Final QC Inspection & COA Report
- Research Institute — Metal Composition Analysis
Technical Specifications
| Product code | CYY-TL5 |
| Type | Infrared Carbon Sulfur Analyzer |
| Measurement Principle | Arc Combustion + Infrared Absorption |
| C Range | 0.005% - 10.0000% (expandable on request) |
| S measurement range | 0.0005% - 0.3500% (expandable on request) |
| Analysis time | 30-60 seconds (fast mode ~35s) |
| Electronic scale | 0-100g, read 0.0001g |
| Power source | AC 220V ±5%, 50Hz ±2%, 3KVA |
| Analytical Gas | Oxy ≥99.5%, avg >3MPa,, outlet pressure 0.08MPa |
| Airflow | 1.2-2.0 L/min |
| Ambient temperature | 15-30°C, humidity ≤60% |
| Certification | CE |
✅ Key Features
- Arc combustion combined with infrared absorption
- Analysis time: ~35 seconds/sample
- Range C: 0.005% – 10.0000%
- S Measurement Range: 0.0005% – 0.3500%
- Digital scale with 0.0001g precision
- Windows software displays real-time analysis curve
- Full configuration: arc furnace, infrared chamber, computer, printer, scale
- Cost is only ~1/5 compared to OES spectrometers
- Low operating costs (only requires oxygen and flux, no argon needed)
- CE certified, English software, global shipping
CYY-LK7 Molten Iron Thermal Analyzer for Foundries — Product Video
CYY-LK7 Molten Iron Thermal Analyzer – Product Promo

Product Introduction
CYY-LK7 is a specialized liquid iron thermal analyzer designed for iron foundries, utilizing cooling curve-based thermal analysis. It measures Carbon (C%), Silicon (Si%), and Manganese (Mn%) content in liquid iron within 90 seconds with high accuracy: C ±0.05%, Si ±0.10%, CE ±0.08%.
The device's core function is measuring carbon and silicon—two critical parameters that determine the quality of cast iron. Mn%, hardness, and tensile strength are supplementary functions used for prediction. The unit features a 15-inch color TFT display with an intuitive interface, stores over 5.000 measurement results, and allows review of historical cooling curves.
CYY-LK7 is heat-resistant and dust-proof, designed for furnace-side environments. Easy operation: plug in, toggle a single switch, pour molten iron into the sample cup for automatic analysis and data logging. CE/UDEM certified—compliant with EU Low Voltage & EMC Directives. Global shipping available.
🏭 Apps
- Gray Iron Foundries
- Ductile Iron Foundries
- Automotive Casting Plant
- Industrial Valve Manufacturer
- General Mechanical Workshop & Foundry
Technical Specifications
| Product code | CYY-LK7 |
| Type | Smart Carbon-Silicon-Manganese Analyzer |
| Measurement Principle | Thermal analysis cooling curve |
| Analysis time | About 90 seconds |
| Sampling Furnace Temperature | 1300℃~1400℃ |
| Analysis temperature (in sample cup) | 1250℃~1350℃ |
| Carbon Equivalent (CE) | 2.50-4.80%, ±0.08% |
| Carbon (C%) | 2.30-4.20%, ±0.05% |
| Silicon (Si%) | 0.60-3.80%, ±0.10% |
| Manganese (Mn%) | 0.10-1.40%, ±0.15% (reference) |
| Display | 15-inch color TFT display |
| Store data | Over 5.000 measurement results |
| Power source | AC 220V, 50Hz |
| Weight | 13 kg (net), 17-18 kg (shipping) |
| Certification | CE |
✅ Key Features
- Analyze C%, Si%, and Mn% in molten iron in just 90 seconds
- High accuracy: C ±0.05%, Si ±0.10%, CE ±0.08%
- Store over 5.000 measurement results; review historical cooling curves
- 15-inch color TFT display with an intuitive interface
- CE / UDEM Certification — EU Low Voltage & EMC Directives
- Global Shipping
CYY-LK2 Carbon-Silicon Analyzer — Product Introduction Video
CYY-LK2 Carbon Silicon Analyzer — Product Promo

Product Introduction
CYY-LK2 is a professional carbon-silicon analyzer, the core equipment of Changyouyi used to analyze the carbon (C) and silicon (Si) content in molten iron directly at the furnace front. The device uses thermal analysis: the microprocessor captures the cooling curve, calculates the chemical composition and quality of the molten iron in just 240 seconds.
The LED display shows 4 digits (digit height 50mm),). Operators can press the button to view CEL, C%, Si% or cycle through them. The device is equipped with an automatic embedded thermal printer that generates a full English report including: measured temperature, carbon content, silicon content, carbon equivalent, hardness estimation, tensile strength, and other parameters. If the paper runs out, printing stops but the LED digit display remains unaffected.
CYY-LK2 helps foundries monitor molten iron composition before pouring, reducing shrinkage defects, gas porosity, and improper graphite structures. This lowers scrap rates and boosts production efficiency. The device is CE-certified and meets international standards for gray iron, ductile iron, automotive casting, pipe, valve, and industrial component foundries.
🏭 Apps
- Cast Iron Foundry
- Ductile Iron Production
- Automotive Casting
- Agricultural Machinery Casting
- Pipe Manufacturing
- Industrial Component Casting
Technical Specifications
| Product code | CYY-LK2 |
| Type | Carbon-Silicon Analyzer |
| Measurement Principle | The microprocessor collects the temperature curve for the gray iron crystallization method. |
| Sampling Furnace Temperature | 1300℃~1400℃ |
| Analysis temperature (in sample cup) | 1250℃~1350℃ |
| Measurement range C | 2.8~4.2% |
| Si measurement range | 0.9~3.5% |
| CEL Measurement Range | 3.2~4.8% |
| Measurement feature | Ductile Iron Thermal Analysis |
| Analysis Program | Measure C, Si, CEL, T, and Tm for white iron and gray iron. |
| Supplement Program | Measure RM, HB, K, Z/H, MEG for non-alloy cast iron |
| Display | LED 4-digit, letter height 50mm |
| Measurement time | Maximum 240 seconds |
| Print results | Automatic thermal sublimation printer |
| Certification | CE |
✅ Key Features
- Analyze C and Si in molten iron at the furnace front within a maximum of 240 seconds.
- Displays 4-digit LED, height 50mm; switches between CEL/C%/Si%
- Automatic thermal label printer for full English report printing
- CE certified, meets international standards
- Low operating cost compared to spectrometers
CYY-W660 Wireless Large-Screen High-Temperature Thermometer for Molten Metal – Product Video
CYY-W660 Wireless Large-Screen Molten Metal Pyrometer – Product Promo

Product Introduction
CYY-W660 is a large-screen wireless molten metal temperature measurement system designed for steel mills, foundries, copper and aluminum casting workshops, and medium-frequency induction furnaces. The device combines a handheld meter with a wireless transmitter and a large-screen display with a receiver, enabling wireless temperature data transmission at 470/490 MHz frequencies over distances up to 300 meters.
In metallurgy, every degree counts. The CYY-W660 features a 5-inch display, delivers measurements in 3 seconds with ±1°C accuracy, and allows operators to read temperature results from up to ~10 meters away without running signal cables between the thermometer gun and the screen.
The device features EMI immunity, CE certification, and a full English interface—meeting international standards for metallurgical plants and foundries worldwide.
🏭 Apps
- Steel Mill & Steelmaking
- Gray Iron & Ductile Iron Foundry
- Bronze, Aluminum & Zinc Die Casting
- Medium-Frequency Induction Furnace
- Metal Pouring Area / Pre-Pouring Zone
Technical Specifications
| Product code | CYY-W660 |
| Device Type | Large-screen wireless thermometer |
| Screen | 5 inch, height ~120-128mm |
| Resolution | 1°C |
| Measurement time | 3-5 seconds |
| Transmit data | Wireless 470/490 MHz |
| Transmission distance | Up to 300m |
| Memory | More than 1.000 historical data points |
| Power source | AC 20V ±10% |
| Certification | CE |
✅ Key Features
- Wireless transmission at 470/490 MHz, range up to 300m
- 5-inch display, character height ~120-128mm for easy long-distance reading
- Fast 3-5 second measurement; auto-holds and transmits stable temperature.
- Electromagnetic interference (EMI) resistance — measurable while the medium-frequency induction furnace is operating
- Resolution: 1°C, Response Time: 1 seconds
- Save more than 1.000 historical data groups
- Print and computer connectivity support
- AC220V ±10% input, CE certified, English interface
CYY-W600 Large-Screen Molten Metal Temperature Meter — Product Video
CYY-W600 Large-Screen Molten Metal Pyrometer — Product Promo

Product Introduction
CYY-W600 is a large-screen, specialized molten metal temperature measurement device designed specifically for foundries and metallurgical plants requiring rapid in-furnace liquid metal temperature checks.
In metallurgy, every degree counts. The CYY-W600 features a 5-inch display, delivers measurements in just 3 seconds with an accuracy of ±1°C, and allows operators to read temperature results from up to ~10 meters away—no need to stand close to the device.
The device features EMI immunity, CE certification, and a full English interface—meeting international standards for metallurgical plants and foundries worldwide.
🏭 Apps
- Iron foundry, steel casting
- Steel mill
- Mid-range touch lock
- Copper, aluminum, and zinc foundry
- Area before pouring molten metal
Technical Specifications
| Product code | CYY-W600 |
| Device Type | Large-screen temperature meter |
| Screen | 5 inch, height ~120mm |
| Resolution | 1°C |
| Measurement time | 3 seconds |
| Mounting type | Wall-mounted |
| Power source | AC 20V ±10% |
| Gun length | 2, 5m |
| Measurement range | Up to 2007°C |
| Certification | CE |
✅ Key Features
- 5-inch display, letter height ~120mm, easily visible from up to ~10m
- Fast measurement in 3 seconds, accurate to 1°C
- Electromagnetic interference (EMI) resistant design
- CE Certified, English interface
- Fixed wall mount, wired connection to 2 measuring gun, 5m
- Automatically maintain temperature after measurement
- Measurement complete alert
- Measurement range up to 2007°C depending on the thermocouple type.
CYY-W330 Handheld Liquid Metal Temperature Meter — User Manual
CYY-W330 Handheld Molten Metal Pyrometer — User Guide

Product Introduction
The CYY-W330 is a handheld liquid metal thermometer designed for the metallurgy and casting industries. It accurately measures the temperature of molten iron, steel, copper, and aluminum with ±0.2% accuracy, a response time of 1 seconds, and a measurement range up to 2007°C.
The device uses a thermocouple probe inserted directly into molten metal, delivering fast and accurate measurements in real-world production environments.
CYY-W330 is CE-certified, features a fully English control panel, meets international standards, and is easy for operators in metallurgical plants and foundries to use.
🏭 Apps
- Steel mill, steel furnace
- Cast iron foundry, gray iron, ductile iron
- Casting: Bronze, Aluminum, Zinc
- Medium-frequency induction furnace, cupola furnace
- Metal pouring area, molten metal containers
Technical Specifications
| Product code | CYY-W330 |
| Measurement method | Direct-Insertion Thermocouple |
| Resolution | 1°C |
| Accuracy | ±0.2% |
| Response time | 1 seconds |
| Maximum range | 2007°C (depending on thermocouple type) |
| Power source | DC 6V, charge via jack |
| Gun length | 1.5m (configurable up to 1-3m) |
| Recommended Insertion Depth | 50-100mm |
| Certification | CE, English control panel |
✅ Key Features
- Integrated handheld design, easy to use
- Durable metal housing with electromagnetic interference (EMI) shielding
- Accurate measurement even when the medium-frequency induction furnace is operating
- Red LED display, automatically maintains temperature after measurement
- Alert with light and siren upon completion of measurement
- Thermocouple break alarm, measurement range exceeded, low battery
- Auto-off after 2 minutes of no signal
- Accuracy ±0.2%, response time 1 seconds
CYY-W330 Thermometer for Steel Casting — Real-World Application at Foundry
CYY-W330 Iron & Steel Temperature Meter — Foundry Application

Product Introduction
The CYY-W330 is widely used in foundries and steel mills to monitor the temperature of molten metal prior to pouring.
In the iron casting workshop, measuring molten iron temperature just before pouring allows operators to verify the metal's thermal conditions during production, ensuring cast product quality.
The CYY-W330 features robust electromagnetic interference immunity, enabling temperature measurement while the medium-frequency induction furnace is powered on without shutting down. This critical feature boosts production efficiency and minimizes equipment downtime.
🏭 Apps
- Gray iron and ductile iron foundry
- Steel mill
- Mid-range touch lock
- Metal pouring area
- Quality control before pouring
Technical Specifications
| Main Application | Measure temperature of molten iron and steel |
| Measurement method | Direct-Insertion Thermocouple |
| Accuracy | ±0.2% |
| Measurement time | 1 seconds |
| Insertion depth | 50-100 mm |
| Noise cancellation | EMI protection |
| Certification | CE |
✅ Key Features
- Accurately measure the temperature of molten iron and steel
- EMI noise immunity; measurement possible while the furnace is powered
- Measurement result in 1 seconds with ±0.2% accuracy
- Automatically maintain temperature after measurement
- Thermocouple break, out of range, low battery
- 6V DC battery pack; auto power-off after 2 minutes
- CE certified, international standard
- English control panel, easy to use
About Changyouyi (CYY)
Nanjing Changyouyi Analytical Instrument Co., Ltd. is a leading Chinese manufacturer of casting inspection equipment and metal analysis tools. Our product line includes molten temperature analyzers, carbon-silicon analyzers, thermal analysis systems, spectrometers, and laboratory testing instruments.
Interested in products CYY-TL5, LK7, LK2, W330, W600, and W660?
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