Product Specifications:
- **Model No.:** HY-301
- **Application:** Gold Scale
- **Function:** Weighing Scale
- **Structure:** Electronic Scale
- **Shape:** Square
- **Maximum Overload:** 0.01g
- **Auto Off (Default):** 30 Seconds
- **Display:** LCD 5 1/2 Digits
- **Power Requirements:** 2 AAA Batteries
- **Trademark:** SEC
- **Transport Package:** Box and Carton
- **Dimensions:** 118 x 80 x 20 mm
- **Origin:** Shenzhen, China
- **HS Code:** 9017800000
**Product Introduction:**
The HY-301 is a high-precision electronic weighing scale designed for use with gold and other precious materials. It offers multiple weighing modes including grams (g), ounces (oz), pennyweights (dwt), and grains (gn). With a readability of 0.01g, 0.001oz, 0.01dwt, and 0.15gn, it ensures accurate and reliable measurements for jewelry makers, traders, and collectors.
Featuring a stainless steel platform measuring 62.58 x 62.58mm, the scale provides a stable and durable surface for precise weighing. The LCD display shows five and a half digits, making it easy to read even in low light conditions.
The HY-301 includes a tare function that allows users to subtract the weight of containers or packaging, and it has an overload indication system that displays "EEEE" when the load exceeds the maximum capacity. It also features an auto shut-off function set to 30 seconds by default, helping to conserve battery life.
Powered by two AAA batteries, the scale comes with a low battery indicator to alert users when power is running low. The standard accessories include batteries and a user manual. The product is backed by a 5-year warranty from the date of purchase, ensuring long-term reliability and customer satisfaction.
This compact and portable scale is ideal for professionals and hobbyists alike who need a reliable tool for precise weight measurements. Its sleek design and advanced features make it a perfect choice for gold trading, gemstone weighing, and other precision-based applications.
Block heat exchangers are compact, modular heat exchange devices classified based on materials, structural designs,
application scenarios, and manufacturing processes. the structured summary of classification as below: Classification by Material
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1. Graphite Block Heat Exchanger - Structural Features: Made of impregnated or molded impervious graphite, offering high corrosion resistance and
thermal conductivity. Common types include cylindrical block-type (e.g., Cylindrical Block Graphite Heat Exchanger)
and shell-and-tube graphite heat exchangers. - Applications: Ideal for corrosive media like strong acids or alkalis, such as heat exchange in phosphoric acid production. 2. Ceramic Block Heat Exchanger - Structural Features: Fabricated from monolithic ceramic blocks with elongated cross-sectional channels. The overlapping
arc-shaped channel walls enhance fluid flow efficiency. - Applications: Suitable for high-temperature or high-wear environments in chemical and energy industries. Classification by Structural Design
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1. Block-and-Hole Heat Exchanger - Composed of multiple perforated graphite blocks stacked together, allowing fluid exchange through interconnected channels (e.g., *Cylindrical Block Graphite Heat Exchanger*). 2. Shell-and-Tube Block Structure - Modular shell-and-tube designs, including fixed-tube and floating-head types. Examples include *Complex Shell-and-Tube Graphite Heat Exchanger*. 3. Monolithic Block Heat Exchanger - Single-piece structures formed by casting or injection molding, eliminating welds and enhancing pressure resistance (e.g., ceramic or metal monolithic blocks). Classification by Special Functions
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1. High-Pressure Thread-Locked Ring Heat Exchanger - Design Features: Employs threaded locking rings for sealing, suitable for high-pressure hydrogen environments (e.g., hydrogenation reaction systems). Corrosion resistance is improved via optimized materials like hydrogen-resistant steel. 2. Corrosion-Resistant Block Heat Exchanger - Examples include *Double-Side Corrosion-Resistant Cylindrical Block Graphite Heater*, designed for strong acid media. Classification by Manufacturing Process
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1. Modular Assembly Type - Multiple modules connected via bolts or adhesives, facilitating maintenance (common in graphite heat exchangers). 2. Integrated Monolithic Type - Molded in one piece for high structural integrity, such as cast ceramic or metal blocks. Application Scenarios
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- Chemical Industry: Graphite and ceramic block exchangers handle corrosive media (e.g., sulfuric acid, phosphoric acid). - Energy & High-Pressure Systems: Thread-locked ring exchangers are used in petroleum hydrogenation and high-pressure steam systems. - High-Temperature Environments: Ceramic blocks excel in waste heat recovery from high-temperature exhaust gases.
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Siping Juyuan Hanyang Plate Heat Exchanger Co., Ltd , https://www.tj-heatexchange.com