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China soundcheck test box - China Supplier
soundcheck test box
Negotiable
Category: Others
Company: 深圳市蜚胜科技有限公司
Product Description: Electroacoustic Test System Function and Performance Table: Test Parameters Level & Gain; Frequency Response; Total Harmonic Distortion (THD/THD+N); Sensitivity; Signal-to-Noise Ratio (SNR); Crosstalk; Impedance Curve; Noise Measurement; Octave Analysis; Phase Response…… Software Customization    Supports custom software function interface Channel Interfaces Measurement microphone input X4 (IEPE constant current supply 4mA / 9V electret supply); Electrical signal line input X1; Stereo output X1; Power output X1 (built-in 10W amplifier); Rear panel interface supports external high-precision 4-in/2-out acquisition card Built-in Sound Card Channels: 2 input / 2 output; Dynamic range 96dB; Sampling rate 48kHz; Amplitude accuracy 0.01dB; THD+N=0.01%. Supports external higher-performance acquisition card Computer External computer (USB 2.0 connection) Operating System Windows 10 & 7 32/64bit Data Saving Excel spreadsheet Operating Voltage 220V AC Instrument Net Weight 7Kg Dimensions 480X200X50mm more>
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China FA160 Vibratory Simple Cotton Box - China Supplier
FA160 Vibratory Simple Cotton Box
Negotiable
Category: Chemicals/Chemical Intermediates/Intermediate Compounds
Company: 常州金坛金纺机械厂
Product Description: Main Specifications Model: FA160 Single Unit Output: 20-60kg Machine Width: 950mm Feed Roller Diameter: 100mm Beater Diameter: 250mm Delivery Roller Diameter: 100mm Total Power: 0.65kW Product Use and Features This cotton box serves as a connecting device between the carding and cleaning processes. The upper cotton box employs photoelectric control, while the lower cotton box utilizes vibration feeding. It features a simple structure, user-friendly operation, and low energy consumption, making it suitable for retrofitting older machinery in textile enterprises with general requirements. Through retrofitting, it enables continuous operation from cleaning to carding, reducing labor and associated costs. Compared to traditional cleaning-carding linkage systems, this cotton box offers an excellent cost-to-performance ratio in terms of investment and returns, making it one of the primary retrofitting solutions considered by small and medium-sized textile enterprises. more>
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China Instrument Protection Insulation Box - China Supplier
Instrument Protection Insulation Box
Negotiable
Category: Instruments & Meters/Instrument Accessories/Instrument Enclosures
Company: 扬中市长丰仪表阀门厂
Product Description:  YX(w h) Instrument Protection Insulation Box   The YX (wh) series insulation (protection) box integrates transmitters, instrument valve manifolds, along with their pipelines and electrical accessories into one unit. It features system modularization, pipeline integration, product serialization, and mechatronics. more>
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China Aluminum Alloy Junction Box - China Supplier
Aluminum Alloy Junction Box
Negotiable
Category: Metallurgy & Minerals/Non-Ferrous Processed Materials/Non-Ferrous Metal Sheets
Company: 扬中市长丰仪表阀门厂
Product Description:  YHX Series Aluminum Alloy Conduit Box   The YHX series conduit box is an essential connecting component used at sleeve connection points, cable joints, and branch points during cable conduit laying. more>
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China Relay Protection Test Box - China Supplier
Relay Protection Test Box
$4900
Category: Instruments & Meters/Testing Machines/Universal Testing Machines
Company: 扬州凯尔电气有限公司
Product Description: KEJBY-C Type Relay Protection Test KitProduct Name: Relay Protection Test KitProduct Model: KEJBY-CAlternative Names: 1. Single-Phase Relay Protection Test Kit2. Relay Protection Tester3. Single-Phase Relay Protection Calibrator4. Relay Protection Test DeviceI. Purpose and Features      The KEJBY-C Type Relay Protection Test Kit is another new type of relay protection test equipment developed by our company in recent years. While the main body remains unchanged, it features a stainless steel or aluminum-plastic specialized shockproof casing, which is both aesthetically pleasing and sturdy, with excellent shock absorption performance.       This tester uses a dual-carbon brush voltage regulator (i.e., a dual-sided voltage regulator). The large knob adjusts AC/DC voltage and current for heavier loads, while the small knob adjusts AC/DC voltage and current for lighter loads, allowing simultaneous output from both channels. Equipped with a 0.5-grade digital meter, high-precision sensors, and accurate measurement capabilities, it also includes a six-digit digital stopwatch for time measurement, making it an excellent tool for relay protection personnel working in the field.II. Main Technical Specifications:      1. Input Power: AC220V±10％   50Hz      2. Rated Capacity: 1.0KVA (can be increased or decreased as required)      3. Output:          Main Circuit:    AC  0～250V（3A） (adjusted by large knob) 0～500mA（20V）0～10A（20V）  0～100A（15V）  DC  0～350V（3A） 0～10A （20V）0～500mA（15V）           Auxiliary Circuit:(adjusted by small knob) AC  0～250V（1A） AC   0～20V（1A）DC   0～350V （1A）       4. Measurement Range:Voltage Measurement Range:    0～250.0V (direct measurement)                            AC Current Measurement Range: 0～500mA (direct measurement) 0～10.00A (shunt input)                            Time Measurement Range:    0～999.999S (resolution 1ms)      5. Accuracy: Measurement accuracy 0.5 grade      6. Weight: 18.0Kg      7. Dimensions: 470×320×230mm      8. Operating Environment Temperature: -20℃～45℃III. Working Principle       3.1 Principle Description       This tester is divided into two circuits: the main circuit and the auxiliary circuit. The main circuit is adjusted by the large knob, and the auxiliary circuit is adjusted by the small knob. The main circuit's various outputs are controlled by the "Output Selection" button switch on the panel. Each time the output is switched, the digital voltage/current meter on the instrument automatically monitors the output value. The auxiliary circuit is directly adjusted via the output switch, and measurements can be taken using an external multimeter.       The common terminal for AC is “＊”, and the common terminal for DC is “⊥”.      3.1.1 Main Circuit Principle       The input AC220V power passes through a fuse and enters the dual-carbon brush voltage regulator T1 via the output control relay K1. The electrical quantity adjusted by the large knob of T1 enters the isolation transformer T2 (which also functions as a current booster). The current booster has three tap outputs: one tap outputs AC 0～250V with a rated current of 3A; this tap's output voltage can be rectified and filtered to output DC 0～350V. The second tap outputs 20V (10A); one path from this tap passes through a sensor and is controlled by a relay to output 0-10A AC current, another path outputs 0～500mA AC current through a resistor, and another path can output 0～10A or 0～500mA DC current via relay switching. The third tap is a 15V (100A) high-current terminal; this tap passes through the sensor once and directly outputs 100A current. This circuit has strong load capacity but should not be operated at high current for extended periods as it may overload slightly.       3.1.2 Auxiliary Circuit      Similar to the main circuit, the AC220V power passes through a fuse and enters the dual-carbon brush voltage regulator T1. The voltage adjusted by the small knob is directly output as AC 0～20V or 0～250V or DC 0～350V through the isolation transformer T4. This circuit has a rated current of 1A. Press the auxiliary circuit "Output Control" switch and adjust the small knob to output.       3.1.3 Measurement Circuit       The main circuit outputs adjusted by the large knob include AC "0～250V", "0～500mA", "0～10A", "0～100A", and DC "0～350V", "0～500mA", "0～10A". These are switched via relays on the internal circuit board. Each time a range is selected, the corresponding output can be monitored. The "0～500mA" range is included in the "0～10A" range; when using the "0～10A" range, pressing it twice will monitor "0～500mA".       3.1.4 Time Measurement      The device has a built-in six-digit digital stopwatch. The stopwatch can be started internally or externally. For internal start, press the "Output Control" switch to start the stopwatch. Shorting the stop terminals on the panel will stop the stopwatch. The stopwatch has a separate power switch and can be turned off when not in use.       3.1.5 Audible and Visual Alerts       The circuit device has built-in audible and visual alert circuits. When the contacts of the tested relay operate, the contacts can be connected to the test kit's alert jack, and the test kit will emit an alarm sound or light up to indicate the relay contact operation status.Note: The product is continuously updated and improved during production. The product appearance images are for reference only (subject to the actual product). Changes may be made without prior notice. more>
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China 1067 Resistance Box - China Supplier
1067 Resistance Box
$13999
Category: Chemicals/Chemical Intermediates/Intermediate Compounds
Company: 捷利安科技（深圳）有限公司
Product Description: 捷利安科技（深圳）有限公司长期供应英国Time Electronics 1067电阻箱实物图，原装产品，欢迎询价订购。Time Electronics 1067电阻箱实物图产品特性：适用于各种模拟工作，尤其是模拟和校准使用电阻传感器的精密 RTD 传感器和温度指示器/仪器。 该结构可确保残余末端电阻尽可能低和稳定。 多个自擦拭银合金触点用于每个位置，提供高性能和长寿命。6 位分辨率0.01Ω - 10KΩ、0.01Ω 步0.01% 精度优于 20 ppm/年稳定性捷利安科技（深圳）有限公司是专业经营英国E2S电子发声器，信号灯，报警器，喇叭等，德国SENSOLUTE智能传感器，英国Megger绝缘测试仪，便携式电器测试仪，瑞士microprecision行程开关，微动开关，电梯开关，英国Time electronics电阻箱，校准仪，校准器，英国Seaward光伏测试仪，太阳能测试仪，英国klaxon电子发声器，信号灯，报警器，喇叭等，比利时sonitron蜂鸣器，德国hengstler计数器，德国Janitza多用电表等，Hobut数字电表，oncque开关等等，直接从国外进口，少去中间环接，有效降低成本，为您提供高性价比的产品，我司承诺所有产品均为原装产品，假一罚十，欢迎询价订购。 more>
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China 1051 Resistance Box - China Supplier
1051 Resistance Box
$6999
Category: Chemicals/Chemical Intermediates/Intermediate Compounds
Company: 捷利安科技（深圳）有限公司
Product Description: Jielian Technology (Shenzhen) Co., Ltd. has long supplied the British resistance box Time Electronics 1051, which is originally imported. Inquiries and orders are welcome. Time Electronics 1051 product features: Decade box, resistance value decade box type, 0.01Ω resolution, ±10% accuracy, 90mΩ residual resistance value, rated power: 1W, temperature coefficient: ±100ppm/°C, dimensions: 110 x 200 x 75mm, weight 0.6kg. Product series and models: Portable instruments: voltage sources, potentiometers, multifunction calibrators, insulation test calibrators, resistance boxes, inductance boxes, capacitance boxes Product models: 1006, 1007, 1010, 1017, 1021, 1024, 1030, 1044, 1048, 1049, 1077, 1090, 5068, 5069, 5070, 5080, 7006, 7007 Decade instrument boxes: handheld calibrators, resistance boxes, inductance boxes, capacitance boxes, simulators Product models: 1040, 1041, 1049, 1050, 1051, 1061, 1065, 1067, 1068, 1070, 1071, 1053 Multifunction calibrators: resistance calibrators, temperature calibrators, programmable DC (AC) voltage (current) calibrators Product models: 5011, 5018, 5025, 5045, 5051, 9780, 9840 Programmable instruments: programmable DC (AC) voltage (current) calibrators, programmable resistance boxes, etc. Product models: 5011, 5012, 5018, 5033, 5065, 5075, 5077, 9820 Process control equipment: calibration and control of voltage, current, pressure, vacuum, temperature, etc. Product models: 1048, 1049, 1077, 1090, 7000, 7005, 7006, 7007, 7010, 7015, 7016, 7018, 7040, 7042, 7050, 7090, 7095, 7060 Calibration workbenches and accessories: calibration and control of voltage, current, pressure, vacuum, temperature, etc. Product models: 7080, 7081, 7082, 7083, 7088, 7086, 7087, 7051, 7032, 7059, 7062, 7064, 7065, 7066, 7038, 7084, 7085, 7001, 7077, 7079, 7068, 7067, 7061, 7070, 7072 more>
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China 1040 Resistance Box - China Supplier
1040 Resistance Box
$5999
Category: Chemicals/Chemical Intermediates/Intermediate Compounds
Company: 捷利安科技（深圳）有限公司
Product Description: Jielian Technology (Shenzhen) Co., Ltd. has long supplied the UK Time Electronics 1040 Resistance Box, which is originally imported. Inquiries and orders are welcome. Product Series and Models: Portable Instruments: Voltage Sources, Potentiometers, Multifunction Calibrators, Insulation Test Calibrators, Resistance Boxes, Inductance Boxes, Capacitance Boxes Product Models: 1006, 1007, 1010, 1017, 1021, 1024, 1030, 1044, 1048, 1049, 1077, 1090, 5068, 5069, 5070, 5080, 7006, 7007 Decimal Instrument Boxes: Handheld Calibrators, Resistance Boxes, Inductance Boxes, Capacitance Boxes, Simulators Product Models: 1040, 1041, 1049, 1050, 1051, 1061, 1065, 1067, 1068, 1070, 1071, 1053 Multifunction Calibrators: Resistance Calibrators, Temperature Calibrators, Programmable DC (AC) Voltage (Current) Calibrators Product Models: 5011, 5018, 5025, 5045, 5051, 9780, 9840 Programmable Instruments: Programmable DC (AC) Voltage (Current) Calibrators, Programmable Resistance Boxes, etc. Product Models: 5011, 5012, 5018, 5033, 5065, 5075, 5077, 9820 Process Control Equipment: Calibration and Control of Voltage, Current, Pressure, Vacuum, Temperature, etc. Product Models: 1048, 1049, 1077, 1090, 7000, 7005, 7006, 7007, 7010, 7015, 7016, 7018, 7040, 7042, 7050, 7090, 7095, 7060 Calibration Workbenches and Accessories: Calibration and Control of Voltage, Current, Pressure, Vacuum, Temperature, etc. Product Models: 7080, 7081, 7082, 7083, 7088, 7086, 7087, 7051, 7032, 7059, 7062, 7064, 7065, 7066, 7038, 7084, 7085, 7001, 7077, 7079, 7068, 7067, 7061, 7070, 7072 more>
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China Box filter press - China Supplier
Box filter press
Negotiable
Category: Machinery & Equipment/Filtration Equipment/Filter Press Equipment
Company: 湖州盛世压滤机有限公司
Product Description: CAS NO:EC NO:Molecular Formula:Molecular Weight:Synonyms:Molecular Structure:CAS NO:EC NO:Molecular Formula:Molecular Weight:Synonyms:Molecular Structure:CAS NO:EC NO:Molecular Formula:Molecular Weight:Synonyms:Molecular Structure: more>
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China Aluminum Foil Lunch Box Inspection - China Supplier
Aluminum Foil Lunch Box Inspection
$800
Category: Metallurgy & Minerals/Common Steel/Other Steel Products
Company: 广东华检检验有限公司
Product Description: Professional Third-Party Aluminum Foil Lunch Box InspectionFor the inspection of aluminum foil lunch boxes, we generally adopt the AQL standard (Acceptable Quality Limits) to define the degree of product defects and acceptable ranges.Professional Third-Party Aluminum Foil Lunch Box Inspection CompanyKey Inspection Points for Inspectors On-SiteSealing: The lunch box should close tightly to prevent food leakage and air ingress.Heat Retention: The lunch box should have good insulation properties to maintain food temperature.Durability: The aluminum foil material should be sturdy and durable, resistant to tearing or deformation.Eco-Friendliness: The lunch box should be recyclable or biodegradable to minimize environmental impact.Ease of Use: The design should be simple and intuitive, making it easy for users to open, close, and carry.Pre-Inspection Preparation for Aluminum Foil Lunch BoxesUnderstand Product Standards: Familiarize yourself with relevant industry standards and quality requirements for aluminum foil lunch boxes.Prepare Tools: Equip necessary inspection tools such as sealing testers, thermometers, timers, and measuring tapes.Inspect Environment: Ensure the inspection area is clean and dry to accurately assess product quality.Aluminum Foil Lunch Box Inspection ProcessVisual Inspection: Examine the appearance for defects, stains, deformations, or other issues.Dimensional Measurement: Use a measuring tape to verify that the lunch box dimensions meet product descriptions and industry standards.Sealing Test: Utilize sealing test tools to check the closure integrity and ensure proper sealing.Heat Retention Test: Place hot food inside the lunch box in a constant temperature environment, record temperature changes, and test insulation duration and effectiveness.Durability Test: Perform pulling and bending tests on the aluminum foil material to check for tearing or deformation.Eco-Friendliness Assessment: Evaluate the recyclability or biodegradability of the lunch box and its environmental impact.Ease of Use Assessment: Invite multiple users to test the lunch box, collect feedback, and assess its usability.Common Quality Defects in Aluminum Foil Lunch BoxesPoor Sealing: The lunch box does not close tightly, leading to food leakage.Inadequate Heat Retention: Short insulation time causes food to cool quickly.Fragile Aluminum Material: The foil is prone to tearing and lacks durability.Poor Eco-Friendliness: The lunch box is neither recyclable nor biodegradable, contributing to environmental pollution.Unreasonable Design: Difficult to open or close, and inconvenient to carry.Inspection Precautions for Aluminum Foil Lunch BoxesAdhere to Standards: Strictly follow product standards and industry regulations during inspection.Comprehensive and Detailed: Conduct thorough and meticulous checks and tests on every detail of the lunch box to ensure nothing is overlooked.Simulate Usage: Mimic real-world usage scenarios during inspection to identify potential issues.Objectivity and Impartiality: Maintain an objective and unbiased attitude, free from external influences, to ensure accurate inspection results.Timely Feedback: Record and report any quality issues or defects to buyers and suppliers promptly for corrective actions.Through a rigorous inspection process, we ensure that every aluminum foil lunch box meets high-quality standards, providing consumers with safe, practical, and eco-friendly food packaging containers. This also helps enhance brand image and consumer trust, earning manufacturers a strong market reputation.Guangzhou HuaJian Commodity Inspection Co., Ltd. has developed customized inspection processes for various products, with meticulous attention to detail and competitive pricing. Long-term collaborations are especially welcome! For more information, please contact Guangzhou HuaJian Commodity Inspection! www.hqc-inspection.com more>
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China Photovoltaic Lightning Protection Combiner Box - China Supplier
Photovoltaic Lightning Protection Combiner Box
$888
Category: Energy/Solar Energy Equipment/Other Solar Equipment
Company: 许继电气股份有限公司
Product Description: XJ Electric GHL-100 Photovoltaic Lightning Protection Combiner BoxThe company's self-developed photovoltaic lightning protection combiner box has successively won bids for key projects in photovoltaic power stations of China Power Investment, CGN, and Huaneng Group. As of now, XJ's market share for photovoltaic lightning protection combiner boxes in China is approximately 20%.In 2016, XJ Group upgraded and transformed the GHL photovoltaic combiner box production line, significantly enhancing the production capacity of GHL photovoltaic combiner boxes.     The intelligent photovoltaic combiner box is used to connect photovoltaic modules to inverters. In addition to realizing combiner and lightning protection functions, it also features current, voltage, and temperature measurement inside the box, fault diagnosis for lightning protection, fuses, and photovoltaic strings, as well as communication functions with the main station, facilitating the formation of a photovoltaic power generation monitoring system. It is mainly used in large-scale photovoltaic grid-connected power generation projects.Product Features:1. Meets the usage requirements of harsh environments with a protection rating of IP65;2. Can connect multiple photovoltaic strings simultaneously, with each string supporting up to 12A current, meeting the needs of different users;3. Equipped with a solar photovoltaic DC high-voltage lightning arrester to prevent lightning damage to components inside the combiner box;4. Utilizes high-precision measurement chips;5. Features a 6-digit 8-segment digital tube for human-machine interaction, enabling real-time display of various operational statuses and data, with detailed and intuitive information for convenient operation and debugging;6. Large-capacity information recording: Important device parameters can be retained during power outages;7. Supports RS485 communication, with flexible, economical, and convenient networking modes, allowing direct communication with computer monitoring systems;8. Integrates monitoring and combining functions, with a rational distribution of strong and weak electrical circuits, facilitating user wiring and significantly reducing occupied space. more>
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