Glove boxes are essential tools for working in a controlled environment, but they can encounter certain issues that may affect their performance. Understanding these common problems and their solutions is crucial for ensuring the smooth operation of glove boxes. Here, we discuss some of the frequently encountered issues and the recommended solutions:

1, the water oxygen content is greater than 200ppm Reason: new box debugging or misuse.

Method: stop the cycle, open the cleaning, cleaning to 100ppm below, open the cycle. 2, the screen shows the main valve pressure is less than 0.4MPa or the main valve signal failure reason: insufficient pressure of the gas source.

Method: Replace the gas cylinder, increase the pressure to 0.4-0.5MPar.

3、Screen display "pump switch off" reason: vacuum pump resistance is too large, resulting in tripping.

Method: After repairing the vacuum pump, open the electric cabinet and close the trip switch.

4, the cycle can not be opened reason: voltage instability caused by inverter protection, resulting in the cycle can not be opened.

Solution: Voltage instability caused by inverter protection, resulting in failure to open the cycle.

5, the regeneration gas is far less than the previous reason: the glove box organic solvent content is too high, the cycle of organic solvents into the circulatory system, regeneration of organic solvents clogging the regeneration gas pipeline due to the one-way valve.

Approach: ① the check valve for a straight valve, from this regeneration pressure is set to 0.03 ~ 0.04Mpa; ② Observe the regeneration gas flowmeter shows whether it is in the 20ml/min or so, otherwise adjust the pressure reducing valve pressure.

6, the cycle and the analyser closed at the same time the reason: box pressure is instantly too high, more than +12mbar, the system automatically protects; ② voltage instability, resulting in system protection.

Voltage instability, resulting in system protection. Methods: ① Check whether the pressure setting is correct, whether the pressure sensor is abnormal, whether the box vacuum valve or make-up valve is damaged, after the pressure returns to normal, open the analyser cycle. Check whether the vacuum pump is damaged and cannot operate.

The Michell Instruments Easidew 2-wire Dew-Point Transmitter is a state-of-the-art instrument designed for accurate and reliable measurement of dew point in various industrial applications. With its advanced features and robust design, the Easidew transmitter offers precise moisture analysis and helps ensure optimal process control and product quality.

1. Principle of Operation: The Easidew 2-wire Dew-Point Transmitter utilizes the fundamental principle of chilled mirror technology for dew point measurement. It consists of a small mirror surface that is cooled until moisture condenses onto it. As the mirror temperature reaches the dew point temperature, the amount of condensed moisture is detected by a built-in capacitive sensor. This measurement is then converted into a standardized output signal, providing a reliable indication of the dew point temperature.

   
   

2. Key Features: a. Wide Measurement Range: The Easidew transmitter offers a wide operating range from -110°C to +20°C dew point, enabling it to handle a broad spectrum of industrial applications, including compressed air systems, pharmaceutical manufacturing, and semiconductor production.

b. Fast Response Time: With a response time as fast as 10 minutes, the Easidew transmitter provides rapid and accurate measurements, allowing for real-time monitoring and control of moisture levels. This feature is particularly beneficial in processes where quick dew point changes need to be detected promptly.

c. Two-Wire Installation: The Easidew transmitter operates on a 2-wire system, simplifying installation and reducing wiring costs. This makes it an ideal choice for retrofit applications or instances where space and wiring infrastructure are limited.

d. High Accuracy and Stability: Michell Instruments has engineered the Easidew transmitter to deliver exceptional accuracy and long-term stability. The instrument's calibration is traceable to national standards, ensuring reliable and consistent performance over extended periods. The Easidew transmitter maintains an accuracy of ±2°C dew point and a repeatability of ±0.5°C dew point.

e. Robust Construction: The Easidew transmitter is designed to withstand harsh environments commonly encountered in industrial settings. It features a rugged stainless-steel construction, making it resistant to corrosion and capable of operating in demanding conditions. The instrument's robust design ensures long-term reliability and minimizes maintenance requirements.

f. Easy Integration: The Easidew transmitter can be seamlessly integrated into existing control systems or SCADA networks. It supports various output options, including 4-20 mA analog signals and Modbus communications, enabling convenient data transfer and integration with other devices.if you have any need ,you can find me by Wechat :FXNY210321/e-mail:amy@etelux.com.

3. Applications: The Michell Instruments Easidew 2-wire Dew-Point Transmitter finds extensive use across a wide range of industries:

a. Compressed Air Systems: The Easidew transmitter is commonly employed for monitoring the moisture content in compressed air systems. By providing accurate dew point measurements, it helps prevent moisture-related issues such as corrosion, contamination, and compromised product quality.

b. Pharmaceutical Manufacturing: In pharmaceutical manufacturing processes, maintaining precise humidity control is crucial to ensure product integrity and stability. The Easidew transmitter enables reliable monitoring and control of moisture levels in critical areas such as cleanrooms, storage facilities, and production environments.

c. Petrochemical Industry: Petrochemical processes often require moisture analysis to prevent the formation of unwanted byproducts or ensure the quality of end products. The Easidew transmitter delivers accurate dew point measurements in hazardous environments, allowing for effective process control and optimization.

d. Food and Beverage Production: Controlling moisture levels is vital in food and beverage production to maintain product freshness and prevent spoilage. The Easidew transmitter enables accurate measurement of dew point temperature, ensuring optimal storage conditions and extended shelf life.

e. HVAC Systems: The Easidew transmitter supports effective climate control in heating, ventilation, and air conditioning (HVAC) systems. By measuring dew point, it helps prevent condensation and mold growth, ensuring a comfortable and healthy indoor environment.

Conclusion: The Michell Instruments Easidew 2-wire Dew-Point Transmitter is a highly reliable and accurate instrument designed for precise moisture analysis in various industrial applications. Its wide measurement range, fast response time, easy integration, and robust construction make it an ideal choice for critical processes where moisture control is paramount. With the Easidew transmitter, industries can maintain optimal product quality, reduce downtime, and enhance process efficiency, thereby delivering substantial benefits to their operations.

Eight, the cycle can not start

1. whether the working gas pressure is between 0.4-0.6MPa;

2. whether the feedback of electromagnetic switch of high vacuum flapper valve is normal;

3. whether the pressure sensor shows normal

4. whether the fan air switch is tripped

5. whether the fan frequency converter is normal

6. whether the relay lights up two at the same time after the point cycle.

IX. The regeneration button does not work

1. need to input password;

2. vacuum pump is not turned on;

3. this purification column is circulating (regeneration and circulation can not be on a purification column at the same time).

Ten, the button can not be operated

1. whether the glove box pressure is normal

2. check whether the communication line of PLC is loose;

3. the wiring of the public terminal 24M, M, COM, etc. is loose.

XI, the vacuum pump can not operate

1. check whether the button switch on the pump body of the vacuum pump is open, "0 OFF" "1 ON". 2. check the circuit breaker of the vacuum pump;

2. check whether the circuit breaker of vacuum pump is tripped.

XII. Vacuum flapper valve can not be opened

1. the working gas pressure is too low, the pressure range should be between 0.4-0.6MPa;

2. the flapper valve is not energized.

XIII. Working gas pressure is too low

1. Check if the working gas is sufficient;

2. whether the pressure reducing gauge is damaged.

In the use of vacuum glove box in the process, there will inevitably be some of this or that small problem; we can contact the after-sales personnel for maintenance, but if there is an urgent need to carry out experiments, and have to use the glove box case, some small problems we can still be their own troubleshooting and solve them, then small make up today to give you an explanation of one or two:

First, the fan tripped

1. check whether the equipment has a solvent filtration system, observe the solvent filtration system and the butterfly valve is open correctly. 2. whether the fan is not open and the equipment is not open;

2. whether the fan is not open and the equipment has begun to work? This indicates that the feedback position of the baffle valve on the purge column is incorrect;

3. what may also cause the circuit breaker to trip or the inverter to self-sustain is an excessive load.

Second, the fan appears murmur

Bearing oil shortage, need professionals to dismantle the fan, refueling maintenance.

Third, the glove box is constantly replenished

1. the equipment itself sealing problems, pressure leakage detection;

2. the transition chamber hatch is not closed tightly;

3. whether the foot pedal is pressed by something;

4. purification system pipeline solenoid valve stuck by impurities.

The glove box is constantly vacuuming

1. the transition hatch is not closed tightly; 2. whether the foot pedal is pressed by something

2. whether the foot pedal is pressed by something;

3. whether the <Purge Column Pumping Valve> on the solenoid valve block is stuck by impurities;

4. whether <box pumping valve> on the solenoid valve block is stuck by impurities.

V. Glove box gas consumption increases

1. there are leaks in the pipeline from the working gas source to the equipment, leakage from the cylinder port at the gas source, leakage from the inlet pipe interface on the valve block;

2. gas leakage from the high vacuum flapper valve;

3. air leakage in the pressure pipe of the high vacuum flapper valve, check in turn;

Sixth, water, oxygen content is too high

1. whether the use of equipment is correct, the commissioning period inside the box can not put more samples, such as the need to put, it is recommended to go through the drying process;

2. the airtightness of the box, including the use of large and small pods and gloves whether in the incorrect use of air leakage;

3. the temperature has a certain effect on the water content, the temperature is too high water content decreases slowly;

4. incomplete baking of activated carbon can also have an effect on the water;

5. whether the regeneration effect is normal, focusing on checking the vacuum link in the regeneration process of the purification column, the vacuum should be kept for more than 2 hours.

The α series purification systems are the core equipment for absorbing trace amounts of water and oxygen (less than 1 ppm).Etelux purification systems can be integrated into gloveboxes or used independently.Etelux gas purification systems can be used with a wide range of gloveboxes, such as acrylic gloveboxes, vacuum gloveboxes, and inert gas gloveboxes; Nichwell purification systems are also available in a wide range of models to match the size of the gloveboxes. Etelux gas purification systems are available in a wide range of sizes for different glove box sizes.

1. Enclosure Design:

The Nichwell Glove Box α-20u Essence System features a robust and airtight enclosure constructed with high-quality stainless steel or acrylic materials. The enclosure is designed to provide a controlled atmosphere, preventing the ingress of contaminants and maintaining the desired level of purity inside. It typically consists of a main chamber with integrated gloves that allow operators to interact with the contents while staying isolated from the external environment.

2. Gas Purification System:

One of the most critical components of the Nichwell Glove Box α-20u Essence System is its advanced gas purification system. This system employs cutting-edge technologies such as molecular sieves, activated carbon filters, and catalytic converters to remove impurities and maintain the desired gas composition within the enclosure. These filters effectively eliminate moisture, oxygen, and other unwanted gases, ensuring a clean and stable environment for sensitive processes.

Guardian and North are two popular brands in the rubber gloves industry, offering a wide range of products for various applications. While both Gardian and North produce rubber gloves, there are several differences between the two brands in terms of their materials, features, and target markets. This article will explore the key distinctions between Gardian rubber gloves and North rubber gloves.

1. Material Composition:

One significant difference between Gardian and North rubber gloves lies in the material composition used to manufacture their products.

Gardian Rubber Gloves: Gardian primarily uses natural rubber latex as the main material for their gloves. Natural rubber latex offers excellent elasticity and durability, making it suitable for general-purpose applications. However, it is important to note that some individuals may have latex allergies, which can cause skin irritation or allergic reactions.

North Rubber Gloves: North, on the other hand, produces gloves using a variety of materials, including natural rubber latex, nitrile, and neoprene. Nitrile gloves offer superior chemical resistance and are an excellent alternative for individuals with latex allergies. Neoprene gloves provide enhanced resistance to oils, chemicals, and abrasion, making them ideal for heavy-duty applications.

2. Features and Specifications:

Gardian and North rubber gloves differ in terms of their specific features and specifications designed to meet various user requirements.

Gardian Rubber Gloves: Gardian offers a range of gloves with features such as textured surfaces for improved grip, beaded cuffs for easy donning and doffing, and flock lining for added comfort during extended wear. These gloves are available in various thicknesses to provide options for different levels of protection.

North Rubber Gloves: North provides gloves with features tailored to specific applications. For instance, their nitrile gloves may have textured fingertips for enhanced dexterity and grip, as well as extended cuffs for additional forearm protection. Some neoprene gloves from North may have a cotton flock lining for added comfort. Additionally, North offers gloves with different thicknesses, lengths, and colors to accommodate diverse user needs.

3. Target Markets and Applications:

Another notable difference between Gardian and North rubber gloves lies in their target markets and intended applications.

Gardian Rubber Gloves: Gardian rubber gloves are commonly used in industries such as healthcare, food processing, janitorial services, and general cleaning tasks. These gloves provide reliable protection against common chemicals, dirt, and pathogens. However, due to the use of natural rubber latex, individuals with latex allergies should exercise caution when using Gardian gloves.

North Rubber Gloves: North rubber gloves cater to a broader range of industries and applications. They are widely used in areas such as laboratory work, automotive maintenance, petrochemical handling, manufacturing, and construction. Depending on the specific material used, North gloves offer varying levels of resistance to chemicals, punctures, abrasions, and heat. The availability of nitrile and neoprene options makes North gloves suitable for individuals with latex allergies.

Conclusion:

In summary, Gardian and North rubber gloves are two reputable brands in the industry, each offering distinct characteristics and catering to different market segments. Gardian primarily utilizes natural rubber latex and focuses on general-purpose applications, while North produces gloves using various materials like latex, nitrile, and neoprene, catering to a wider range of industries and providing alternatives for latex-sensitive individuals. Understanding the differences between Gardian and North rubber gloves allows users to select the most suitable option based on their specific requirements and preferences.

Ensuring the seal integrity of glove boxes is essential in maintaining controlled environments for handling sensitive materials and conducting experiments. A compromised seal can lead to the ingress of contaminants, compromising the quality and reliability of the processes within. This article aims to provide guidelines on how to test the seal integrity of glove boxes, ensuring their effectiveness in creating and maintaining controlled atmospheres.

1. Visual Inspection:

The first step in testing the seal integrity of glove boxes is conducting a visual inspection. Inspect the entire glove box enclosure, paying close attention to the door seals, glove attachments, and any other potential points of leakage. Look for signs of damage, wear, or gaps that may indicate a compromised seal.

2. Soap Bubble Test:

The soap bubble test is a widely used method for detecting leaks in glove box seals. Follow these steps to perform the test:

a. Prepare a soap solution by mixing liquid dish soap with water. b. Apply the soap solution to the glove box seals, focusing on areas prone to leakage such as door seals and glove attachments. c. Observe the seals closely for the formation of soap bubbles. If bubbles appear, it indicates a leak in the seal.

3. Pressure Decay Test:

The pressure decay test is another effective method for testing the seal integrity of glove boxes. Here's how to perform the test:

a. Close all access points, including doors, ports, and transfer chambers to achieve a sealed environment. b. Measure and record the initial pressure inside the glove box using a pressure gauge. c. Monitor the pressure over a specific duration, typically several hours, to detect any pressure drop. A significant drop in pressure indicates a leak in the seal.

4. Ultrasonic Leak Detection:

Ultrasonic leak detection is a more advanced technique for detecting leaks in glove box seals. It involves using ultrasonic detectors to identify high-frequency sounds produced by escaping gases. Follow these steps for this method:

a. Close all access points and ensure the glove box is sealed. b. Use an ultrasonic leak detector to scan the glove box seals. Move the detector probe along the seals, listening for any high-frequency hissing or buzzing sounds that indicate a leak.

5. Smoke Test:

A smoke test can also be employed to visualize airflows and identify potential leaks. Here's how to conduct a smoke test:

a. Close all access points of the glove box. b. Generate a small amount of non-toxic smoke using a smoke emitter or incense stick. c. Observe the movement of smoke inside the glove box. Any deviation or escape of smoke indicates a leak in the seal.

6. Gas Tracer Test:

Gas tracer tests involve introducing a detectable gas, such as helium or sulfur hexafluoride, into the glove box and using a gas detector to locate leaks. This method is often used for high-level containment glove boxes. Consult with professionals familiar with gas tracer testing protocols to ensure safe and accurate implementation.

Conclusion:

Testing the seal integrity of glove boxes is crucial for maintaining the controlled environment necessary for handling sensitive materials and conducting experiments. Visual inspections, soap bubble tests, pressure decay tests, ultrasonic leak detection, smoke tests, and gas tracer tests are effective methods for detecting leaks in the seals. Regular testing and maintenance of glove box seals ensure their effectiveness and reliability. By following these guidelines, scientists and engineers can confidently assess the seal integrity of glove boxes and make necessary repairs or replacements to maintain optimal performance.

Nichwell is a company that specializes in developing and manufacturing advanced sensor technologies for various industrial applications. Two of their notable sensor products are the zirconia sensor and the electrochemical sensor. This article aims to provide a comprehensive analysis of the differences and commonalities between these two sensors.

I. Zirconia Sensor:

The zirconia sensor, also known as the oxygen sensor or zirconia oxygen analyzer, is primarily used for measuring the oxygen concentration in gas mixtures. It operates based on the principle of solid-state electrochemical technology. Here are some key characteristics and features of the zirconia sensor:

Operating Principle: The zirconia sensor utilizes a solid electrolyte material made of stabilized zirconium oxide. It measures the oxygen concentration by determining the difference in oxygen partial pressure across the sensor's ceramic membrane.

Measurement Range: The zirconia sensor can measure oxygen concentrations ranging from trace levels up to near 100%.

Sensitivity: It exhibits high sensitivity to changes in oxygen concentration, enabling accurate and precise measurements.

Response Time: The zirconia sensor typically has a fast response time, allowing for real-time monitoring and control.

Temperature Dependence: It is highly dependent on operating temperature, requiring precise temperature control to maintain accurate measurements.

II. Electrochemical Sensor:

The electrochemical sensor is commonly used for detecting various gases and chemical species, including toxic gases and volatile organic compounds (VOCs). It operates based on chemical reactions occurring at the sensor's electrodes. Here are some key characteristics and features of the electrochemical sensor:

Operating Principle: The electrochemical sensor employs chemical reactions between the target gas/analyte and the sensing electrodes to generate an electrical signal proportional to the gas concentration.

Measurement Range: The electrochemical sensor can measure a wide range of gas concentrations, typically from parts per billion (ppb) to parts per million (ppm) or percentage levels.

Selectivity: It can be selectively designed to detect specific gases or analytes based on the chemical composition of the sensing electrode materials.

Calibration: The electrochemical sensor requires periodic calibration to maintain accuracy, as the chemical reactions at the electrodes may change over time.

Response Time: The response time of the electrochemical sensor is generally faster compared to other gas detection technologies, allowing for rapid detection and response to gas hazards.

III. Differences between Zirconia Sensor and Electrochemical Sensor:

Operating Principle: The zirconia sensor relies on solid-state electrochemical principles, while the electrochemical sensor operates through chemical reactions at the sensing electrodes.

Application Focus: The zirconia sensor is primarily used for oxygen concentration measurement, while the electrochemical sensor has a broader application range for detecting various gases and chemical species.

Measurement Range: The zirconia sensor is designed specifically for measuring oxygen concentrations, whereas the electrochemical sensor can detect a wide range of gases and analytes.

Selectivity: The zirconia sensor is not selective and measures only oxygen concentration, whereas the electrochemical sensor can be selectively designed for specific gas detection.

Calibration Requirements: The electrochemical sensor requires regular calibration due to the potential changes in chemical reactions, while the zirconia sensor typically does not require frequent calibration.

IV. Commonalities between Zirconia Sensor and Electrochemical Sensor:

Sensor Technologies: Both the zirconia sensor and the electrochemical sensor belong to the category of electrochemical sensors, which rely on electrochemical reactions for gas detection.

Gas Sensing: While their applications differ, both sensors provide valuable information regarding gas concentrations, enabling critical monitoring and control in various industrial processes.

Industrial Applications: Both sensors find extensive applications in industries such as environmental monitoring, gas analysis, chemical manufacturing, automotive emissions control, and more.

Sensitivity: Both sensors exhibit high sensitivity to the target gases, allowing for accurate and reliable measurements.

Real-Time Monitoring: Both sensors enable real-time monitoring of gas concentrations, facilitating timely response and control measures.

Conclusion:

In summary, the zirconia sensor and the electrochemical sensor developed by Nichwell employ different principles, cater to different application requirements, and offer distinct features. The zirconia sensor focuses on oxygen concentration measurement, while the electrochemical sensor has a broader range of gas detection capabilities. Despite their differences, both sensors utilize electrochemical reactions, provide valuable sensing information, and find applications in various industrial sectors. Understanding these differences and commonalities can help in selecting the most suitable sensor for specific gas sensing needs.

A vacuum coating glove box, also known as a vacuum deposition glove box or vacuum chamber glove box, is an advanced scientific instrument widely used in the field of thin film deposition and surface modification. It provides a controlled environment for conducting various processes involving vacuum coating or thin film deposition, ensuring high-quality and reproducible results.

The primary purpose of a vacuum coating glove box is to create a low-pressure, oxygen-free, and moisture-free environment inside the chamber. This controlled atmosphere is crucial for preventing contamination and unwanted reactions during the deposition process, which can adversely affect the properties and performance of the thin films being produced.

Inside a vacuum coating glove box, a vacuum pump is used to reduce the pressure within the chamber to the desired level. This process removes residual gases, moisture, and other impurities that may interfere with the deposition process. By creating a vacuum, the glove box ensures a clean and controlled environment for precise thin film deposition.

One of the key components of a vacuum coating glove box is the deposition system. This system typically consists of one or more sources of evaporant or sputtering targets, which are used to deposit thin films onto substrates. The materials used for the deposition can vary widely, ranging from metals and alloys to semiconductors and insulators. The vacuum environment inside the glove box allows for precise control of the deposition parameters, such as temperature, pressure, and deposition rate, resulting in highly uniform and conformal coatings.

To further enhance the quality and performance of the deposited films, some vacuum coating glove boxes may incorporate additional features. These can include temperature control systems, substrate rotation mechanisms, and in-situ monitoring tools, such as quartz crystal microbalances or optical monitors. These features enable real-time monitoring and control of the deposition process, facilitating precise control over the thickness, composition, and structure of the deposited films.

Another important aspect of a vacuum coating glove box is the glove system. The glove system allows operators to handle samples and conduct manipulations inside the chamber without exposing them to the external environment. Typically, the glove system consists of durable and flexible gloves attached to glove ports on the sides of the glove box. These gloves are made from materials that are impermeable to gases and moisture, ensuring that the controlled atmosphere inside the chamber is maintained.

In addition to its primary function in vacuum coating, the glove box can also serve as a versatile platform for conducting various other processes. It can be equipped with additional accessories, such as gas dosing units, heating stages, or electrical feedthroughs, to enable a wide range of experimental setups and investigations. This flexibility makes the vacuum coating glove box a valuable tool for research and development in areas such as material science, surface engineering, optics, electronics, and energy storage.

In conclusion, a vacuum coating glove box provides a controlled environment for conducting vacuum deposition processes. By creating a low-pressure, oxygen-free, and moisture-free environment, it ensures high-quality and reproducible thin film coatings. With its deposition system, glove system, and additional features, the vacuum coating glove box offers researchers and engineers a versatile tool for exploring the properties and applications of thin films in various scientific and technological domains.the e-mail:amy@etelux.com.please contact me,if you have any need.