Pay attention to the suitability of choosing ppe

The purpose of daily inspection of split electromagnetic flowmeters is to ensure or prove that they are operating under controlled conditions. There are two types of routine inspections, on-line inspection and off-line inspection, mainly to verify whether the flow measurement of the electromagnetic flowmeter meets and maintains the expected measurement requirements.

The electromagnetic flow meter is mainly used in industrial applications for flow control, and the measured fluids are mostly corrosive and abrasive. In practical applications, the failure of the electromagnetic flowmeter is mostly caused by corrosion leakage, insulation degradation, electrode fouling or adhesion of foreign substances.

The traditional periodic maintenance check of the electromagnetic flowmeter is to sweep and inspect the flow sensor discharge line and then perform flow calibration. In order to reduce the flow sensor unloading the damage lining from the pipeline, first determine whether the insulation resistance is abnormal in the pipeline or not, and then decide whether to remove the pipeline inspection or real flow flow calibration in the next step. General conditions (real implementation of ISO9001 quality management system) The general inspection methods of the company are: (1) 1/3 for on-line inspections; (2) 1/3 for removing pipelines for inspection after cleaning parts; (3) ), 1/3 off-line for flow calibration.

One of the specific operating modes of split magnetic flowmeters can be a comprehensive inspection of electromagnetic flowmeters every year. The inspection contents are: appearance inspection, converter characteristic test, calibration of measured values, measurement of voltage of each part, measurement of insulation resistance, confirmation of circuits, etc. When measuring and adjusting the instrument, due to the zero drift, it is very important to adjust the zero point (“On-line zero adjustment” must stop the measured medium from flowing, which is not easy to do). Therefore, the online inspection often omits the inspection including the operation of the sensor, and only the calibration of the converter is performed, so that the comparison of the on-line inspection result with the historical data confirms whether the instrument continues to be used, repaired or updated, and the sensor is measured according to the measured insulation resistance of the excitation coil. The degree of deterioration is determined to be updated or not.

Split-type electromagnetic flowmeter specific operation of the second through online inspection to verify whether the electromagnetic flowmeter abnormal phenomenon. Check the flow sensor and converter individually for pipelines that cannot stop the flow of media, test the converter with analog signal and other general-purpose instruments with high calibration accuracy (this depends on the accuracy of the analog signal), and the sensor check with the test electrode. Wetted resistance, check the excitation coil including the insulation resistance and copper resistance of the excitation connection cable, as well as the indirect method of checking the excitation current output by the converter and checking the strength of the magnetic field. For pipelines that can stop the flow conditions of the media, they can be accessed from the entry holes that are preset near the sensors, checking the levels and lining dirt/deposition conditions and cleaning.

Split-type electromagnetic flowmeter Check contents Check the electromagnetic flowmeter. In addition to the zero-point check, separate the flow sensor, transducer, and connection cable.

1. Zero check of the whole machine The technical requirement of the zero check is that the measuring tube of the flow sensor is full of liquid and there is no flow. This would give up the zero check and adjustment of the whole machine at the site of many enterprises, but it can be turned to the converter. Make a separate zero check and adjustment. Technically speaking, this must have practical significance after the sensor is inspected and the insulation resistance of the sensor's excitation circuit and signal circuit is normal (including cables). Otherwise, the whole machine cannot operate normally. Usually the converter's single zero is negative and the value is very small; if its absolute value is greater than 5% of full scale, it needs to be checked first, and then adjusted after confirming the reason. Under normal circumstances, the zero point of the electromagnetic flowmeter and the individual zero difference of the converter is less than 1%. Many of the zero difference values ​​above 5% are caused by incorrect zeroing operations by the user in the event of a poorly closed pipe valve.

2. Checking the Connection Cable This check is to check the conduction and insulation resistance of each core of the signal line and the excitation line, and check whether the grounding of each shielding layer is in good condition.

3, converter check The inspection content is to use the general instrument and the flow meter model matching analog signal device instead of the sensor to provide the flow signal for zero adjustment and calibration. Calibration includes zero check and adjustment, set value check, excitation current measurement, current/frequency output check, etc. It should be noted that the inspection item must be compared with the previous inspection value (or factory value) and whether there is any change or change in the original metering requirement.

4. Flow sensor inspection The inspection content is: indirect evaluation of whether the magnetic field strength is changed by checking the excitation coil and checking the excitation current measured by the converter; measuring the electrode resistance to evaluate the contamination of the electrode surface and the lining adhesion layer Condition; Check the insulation resistance of each part to determine the degree of component degradation to assess whether it will introduce interference. For pipelines that can stop media flow conditions, the thickness of the electrode and liner adhering layer can be observed and measured to estimate the change in flow values ​​introduced by the change in flow area before and after cleaning the adhering layer.

(1) Measure the coil resistance of the excitation coil. Measure the coil resistance with a high-accuracy digital multimeter or Wheatstone bridge. If necessary, make a temperature coefficient correction and compare it with the instrument file value. Verify that the coil is conducting well and there is no short circuit between the turns.

(2) Checking the Insulation Resistance of the Excitation Coil The insulation coil of the excitation coil and its connection terminals are dampened after the dampening of the excitation circuit to the ground. It is possible to introduce the excitation signal into the flow signal transmission circuit so that the electrode adds a large insulation resistance and signal resistance to the excitation voltage. The partial pressure, forming a large common-mode interference signal. When this disturbing signal exceeds the suppressing ability of the converter preamplifier, the zero point of the converter is shifted. When the drop in insulation resistance is not very serious, this phenomenon is not easily noticeable when the instrument is running. Except for IP68 terminal box, due to carelessness in practice, the terminal box is not sealed into the moisture, and the terminal insulation resistance drops below 5-6 MΩ, which is likely to cause failure. Blow dry the terminal, usually the fault can be eliminated.

(3) Checking the Electrode Resistance The flow resistance of the electrode flow sensor should be measured immediately after the new instrument is commissioned and recorded. After each maintenance measurement once, analysis and comparison of these data can help determine the cause of the instrument failure.

The contact resistance of the electrode with the liquid depends on the measured liquid conductivity of the contact surface. There are significant differences in the measured resistance of different media. The electrode contact resistance can be measured by the pointer multimeter when the measuring tube is filled with liquid and the resistance between each electrode terminal and ground is measured. Experience has shown that the difference between the contact resistance values ​​of the two electrodes should be less than 10% to 20%, otherwise it indicates a fault.

If there is a difference between the measured resistance of the electrode solution and the original measurement, the reasons are: a. The coverage of the two-electrode insulating adhesion layer is inconsistent or the insulation resistance of one of the electrode signal loops decreases; b. The increase of the resistance value is the insulation of the electrode surface. Layer coverage; c, reduced resistance value is a conductive deposition layer attached to the surface of the electrode near the electrode or electrode assembly (such as insulation ring) insulation down. Although failures are not sometimes formed, measures should be taken as a precursor to failure.

(4) Measure Polarization Voltage Between Electrode/Liquid The measurement of this voltage will help determine if the electrode is dirty or covered. This may cause a zero-point instability or output-sloshing failure.

(5) Checking insulation between the signal circuit insulation and the excitation circuit/signal circuit The purpose of this check is to evaluate whether or not to introduce interference due to a drop in insulation. When checking the signal circuit, the signal line should be temporarily disconnected from the electrode. Caused by the decrease in insulation, the junction box is not sealed and moisture is entered, and the protective sensor cable is cut off and then moisture-proof.

(6) Check the electrode insulation resistance and lining condition. This inspection is to remove the small-caliber instrument from the pipeline. For the large-caliber instrument, the effusion can be vented and then enter the pipe from the inlet hole. Observe: Dry the lining inner surface with megohmmeter. Test the insulation resistance of the two electrodes to the ground; if the liner has an adhesion layer, it shall be removed and the cleaning cycle shall be determined according to the thickness of the laminate; if the adhesion layer is not thick and the conductivity is the same as the liquid, the additional error of the area change may be ignored; if the adhesion layer conductivity Less than the liquid will produce a positive additional error, and vice versa will produce a negative additional error.

The electrode insulation resistance is generally required to be greater than 100MΩ, and the insulation declines due to the external electrodes and bushes being affected by the external immersion and dampness (using a hot air blower to remove moisture); if the insulation is damaged (such as the intrusion of the etching liquid from the seal), the sensor must be replaced or Return to factory for repair.

Suggestions for the routine inspection of separate electromagnetic flowmeters 1. Formulation of daily inspection specification documents The company shall formulate its own daily inspection work instructions on the basis of implementing the ISO9001 standard and establish a quality management system. Large-scale enterprises may formulate "magnetic flowmeters" Online calibration method "or" electromagnetic flowmeter online calibration specification "to ensure that the use of electromagnetic flowmeter controlled effective.

2. Promotion and application of daily inspection instruments Domestic and foreign special equipments for electromagnetic flowmeter testing and inspection have been developed at home and abroad. The application places of such special instruments have been applied in the water industry and metallurgical and chemical industry, and other conditions. Enterprises with favorable conditions should actively promote their application. . Its development will be dedicated test equipment and portable PC, with the use of: on-site or calibration chamber, a special instrument terminating the other end of the electromagnetic flow converter PC, complete daily inspection test and inspection operations

sub-body Electromagnetic Flowmeter

14.0-16.0Ton Diesel Forklift

Goodsense forklift new generation diesel counter balance forklift advantages:

1.Special designed for 16-20T forklift.. Heavy-duty car main reduction, wheel speed reduction; Fully enclosed  and maintenance-free wet brake. Spring storage parking brake system, smooth and reliable brake, good performance.

2.High-strength structural parts: Using high-strength sheet and box design frame structure, more durable; Especially suitable for paper industry, container transport and other high strength, rugged and long operating conditions

3.The rear tilt scissors hood design, more convenient maintenance .

4.Whole floating form design, and the frame four-point rubber shock absorber connection; Head guard tilting structure, easy access for internal maintenance; The steering column and steering wheel shape is small and flexible. Large leg space for drivers. Cabin for optional.

General
Model			FD140	FD160
Power Type			Diesel	Diesel
Load Capacity		kg	14000	16000
Load centre		mm	900	900
Tyre
Tyre			Pneumatic Tyre	Pneumatic Tyre
Front Tyre			12.00-24-20PR	12.00-24-20PR
Rear Tyre			12.00-20-18PR	12.00-20-18PR
Overall Dimension
Lift Height		mm	4000	4000
Fork Size	L×W×T	mm	1820×200×100	1820×200×100
Mast Tilt Angle	F/R	.	6/12	6/12
Mast Lowered Height		mm	3660	3660
Mast Extended Height(with backrest)		mm	5655	5655
Length to face of fork(Without fork)		mm	5330	5330
Overall Width		mm	2600	2600
Overhead Guard Height		mm	2985	2985

Application Area:

1.Warehouse

2.Port

3.Factory

4.Distribution Center

5.Logistics

If you have any other questions,please contact us directly.Our forklift are all with high quality,and you can choose any other engine to equip.It can be produced according to your idea.And we invite you to visit our factory.

14.0-16.0Ton Diesel Forklift,14.0Ton Diesel Forklift,16.0Ton Diesel Forklift

ZHEJIANG GOODSENSE FORKLIFT CO.,LTD , https://www.dieselforklift.nl

Whether it is the purchase of new homes or the preparations for refurbishing homes at the end of the year to welcome the arrival of the New Year, this e-commerce annual event will not be missed. In order to satisfy the consumers' curiosity and demand for the most popular smart homes nowadays, the hardware leading brand of the United States launched a new product called 'NEO Neo Smart Fingerprint Code Lock' to help the public unveil the mystery of smart fingerprint code locks. Introduce the unparalleled high-tech and unparalleled superiority behind it. At the same time, in order to thank new and old customers, Duoling Metal Lynx Mall special promotion activities, down payment can enjoy the lowest price throughout the year, many product offers, Duo Ling traditional strong interior door locks, kitchen hardware, bathroom hardware, dry Hanger, e-cat's eye and other classic products have also given the most awesome discounts throughout the year, creating a real home improvement hardware carnival!

First, the intelligent fingerprint password lock grand launch DOL smart fingerprint lock With AuthenTec's TruePrint patented technology, the product can accurately read the skin surface activity (where people's fingerprints really located), to achieve extremely reliable fingerprint imaging, so that Dura Hardware has been ranked first in the hardware category for 4 consecutive years. The smart fingerprint code lock introduced by Duoling Hardware possesses a mobile phone-level OLED display and a Swedish leather-layer FPC fingerprint recognition sensor, which is able to sense the instant intelligent identification.

In the 'Double 11 Pre-sale Campaign' launched by the Dling Hardware Lynx Mall, as long as the down payment is paid, it will be able to enjoy a minimum annual discount of as low as 1.6%. The first to experience the smart door lock brings a high-tech experience to home life. In the era of all people entering the smart era, the appearance of smart password locks can cater to the needs of the market, which will open the curtain for the upgrading of locks for all citizens and will also bring new shopping experiences to consumers.

Second, the classic hardware product offers a lot of in the 'double 11 pre-sale activities', not only the new product has the lowest discount price throughout the year, including Duoling metal interior locks, kitchen hardware, bathroom hardware, drying racks, electronic cat's eye and other classic products You can also enjoy prepaid discounts. 'One-fold and one-year-on-one', log in the Doll Hardware's Double 11' main venue, to purchase the most غير مجاز مي باشدt-effective home hardware products for homeowners.

Third, the quality of the first-line members of the League Guaranteed October 15, at the Shanghai Mercedes-Benz (Benz) Cultural Center, organized by the 'first-line big-name league set up a press conference', Duoling as a first-line big league members attend. Six well-known brands: Doring Hardware, Schneider Electric, Anxin Flooring, Philips Lighting, American Standard Bathrooms, PPG Master Paint, formed a large-scale first-line alliance that was formally established. It was from Putuo District Consumer Protection Committee, Shanghai Decoration Industry Association, Shanghai. Many leaders of the city's building materials industry associations and other organizations gathered together with numerous media and Tmall guests to witness the official launch of the first-line big leagues and set sail in the country. The six brands indicated that they will integrate the upstream and downstream resource advantages of the industry chain, and ultimately provide consumers with one-stop convenience services and inexpensive goods.

This year, more and more online shopping forces will focus on the smart home industry, smart door locks, fingerprint door locks ... ... high-tech home hardware products, constantly refreshing the public eye. Smart Home is beginning to enter the family, I believe that Dooling Hardware can bring more safety and convenience to the public life, so that home life becomes more refined and perfect!

Charcoal Bbq Grill

Charcoal BBQ Grill,Charcoal Smoker BBQ Grills,Charcoal Barbecue Grill,Charcoal Grill

Shaoxing Haoda Electrical Appliance Co.,Ltd , https://www.hotplates.nl

Technically speaking, IHC and ICC experiments are not difficult, however, there are so many variables in each experiment that need to be identified and optimized. If the bad luck, the experimental results are not very good, then we may have to do troubleshooting to see where the problem lies. The following table lists the common problems of the IHC/ICC experiment analyzed by Shanghai Yuan Mu senior technology, and the corresponding countermeasures.

Problem 1: lack of staining Possible Cause Countermeasure Lack of antigen Check protein expression by in situ hybridization.

Due to improper storage, antibodies do not work as stored in the instruction manual. In general, the antibody is aliquoted in small portions, sufficient for a single experiment. Store these antibodies in a manually defrosted refrigerator (-20 to -70 °C) to avoid repeated freezing and thawing.

Primary or secondary antibody inactivation independent test reporting system to assess the usefulness of the reagent.

Insufficient fixation of the tissue Try to increase the fixed time or change the fixative.

Over-fixation of tissue reduces the duration of steps after infiltration or fixation. If infiltration is unavoidable, the antigen is not masked by the antigen retrieval agent.

Primary and secondary antibodies are not compatible with secondary antibodies that interact with primary antibodies. For example, if the primary antibody is from a rabbit, use an anti-rabbit secondary antibody.

The epitope has been altered during fixation or embedding attempts to restore immunoreactivity by various antigen retrieval techniques.

Tissues are embedded at 58°C or below.

Antigen repair does not work to increase the processing time or change the treatment solution.

The reagents are missing or in an incorrect order. Repeat the staining process. Confirm that the correct reagents are used and add them in the correct order.

Question 2: High Background Probable Causes Countermeasures High-titration of antibodies at the concentration of primary or secondary antibodies to determine the concentration of zuijia required to promote the specific responses of primary and secondary antibodies. .

Hydrophobic interactions of antibodies and proteins in tissues reduce the ionic strength (especially monoclonal antibodies) of antibody dilutions.

Non-specific binding of primary or secondary antibodies to tissue uses a blocking step (typically using 1% BSA and 10% normal donkey serum) prior to incubation with the primary antibody. Skim milk powder is also an option.

Nonspecific binding of the secondary antibody uses antibodies with cross-reactive IgG removed.

The tissue dries during the staining process to avoid drying out the tissue.

The background caused by the ionic interaction increases the ionic strength of the diluent.

Question 3: Cell/tissue morphology is destroyed Possible causes Countermeasures Antigen repair methods are too rigorous Experimental conditions are determined based on experience. Immunoreactive tissue sections that can retain tissue morphology and restore antigen are detached from the slide for a fixed period of time. Another fixative is determined empirically.

The tissue section is torn or folded. Re-slice the bubbles under the slice, or ignore the damaged area when analyzing the results.

The difference in resolution of the tissue morphology cuts out thinner tissue sections. Ice crystals may destroy the shape of frozen sections.

Insufficient fixation can cause tissue or cells to be damaged for a fixed period of time during staining. Increase the fixative/tissue ratio. Cut out smaller tissues for more thorough infiltration.

Tissue autolysis leads to staining of necrotic debris for a prolonged period of time and proportion. Consider using crosslinked fixatives.

Problem 4: Improper dyeing Possible cause Countermeasures Improper fixing method Try another fixing agent, or extend the fixing time.

Antigen remediation may improperly try another antigen retrieval condition.

The electrostatic charge of the antigen is changed to try to adjust the pH or cation concentration of the antibody dilution.

Fixed delays cause antigen diffusion to quickly fix tissue. Try cross-linking fixatives instead of organic fixatives.

Yuanmu Biological Reagent Co., Ltd. is available for sale. At the same time, we also provide product molecular formula, molecular weight and nature, etc. As a well-known production provider in the country, our company has advanced scientific research team to relieve all your worries for your experiments!

Solar Battery

Product Picture :

Applications :

♦Solar and wind energy storage system

♦EPS and UPS battery backup 

♦Signal system , emergency lighting system , security system 

♦Telecommunication Equipment

♦Power plant and transmission system 

Fetures : 

♦Non-Spillable Sealed Construction

♦Absorptive Glass Mat System 

♦ABS container and cover 

♦Gas Recombination 

♦Low Pressure Venting System  

♦Low Self-Discharge-Long Shelf Life 

♦Wide Operating Temperature Range 

♦High Recovery Capability

100Ah Lead Acid Agm Battery,Solar Battery,Car Dry Charged Battery,Lead Acid Gel Battery

Resun Solar Energy Co., Ltd. , https://www.resunsolargroup.com

Sockets are an indispensable necessities in life nowadays, but people who speak intelligent PDUs are relatively few, let alone their use materials, load power, and service life. Smart people alone are also ignorant of this feature. Understand, then how intelligent PDU embodies intelligence?

Chemic Dry

Chemical Dryer,Microwave Chemical Dryer,Chemical Drying Machine

Sanshon Machinery Manufacturing Co., Ltd. , http://www.zjdryer.com

Changzhou Chengfeng Instrument Intelligent Electromagnetic Flowmeter is developed based on the standard manufacturing system. Its advanced design concept ensures the high precision and high reliability of the product. Compared with the old electromagnetic flowmeter, it has high measurement accuracy and reliability. Strong, stable, functional, long life and other advantages.

First, the installation of straight pipe requirements

first noted as a load of the sensor itself can not support point, it can not support the next working channel, it should clamp the pipe load. In order to obtain normal measurement accuracy, the electromagnetic flow sensor must also have a straight pipe section of a certain length upstream, but its length is lower than that of most other flow meters. 90o elbow, T-tube, concentric reducer, and full-opening valve shall be 5 times the diameter (5D) of the straight pipe section from the sensor's inlet flange connection surface. Valves with different opening degrees shall require 10D; the downstream straight pipe segment shall be (2 ~ 3) D; but to prevent the butterfly valve plate protruding into the sensor measuring tube. The lengths of the upstream and downstream straight pipe sections proposed by various standards or verification regulations are also inconsistent and are summarized in Table 2. The requirements are higher than usual. This is due to the requirement to achieve the current class 0.5 accuracy meter.

Second, the installation of the sensor

1, as much as possible to avoid the negative pressure in the measuring tube;

2. When measuring the mixed phase fluid, select the place that will not cause phase separation; when measuring the two-component liquid, avoid installing in the downstream where the mixing is not uniform; when measuring the chemical reaction pipeline, install it in the downstream of the fully completed reaction section;

3, as much as possible to avoid high concentrations of corrosive gases in the surrounding environment;

4, as far as possible to avoid direct sunlight;

5, to avoid nearby large motors, large transformers, etc., so as to avoid electromagnetic interference;

Third, the installation position and flow direction

1, the measurement pipeline must be completely filled with liquid;

2. The axis of the measuring electrode must be approximately horizontal;

3, there must be a vacuum inside the pipeline will damage the flow meter lining, need special attention;

4. The flow direction of the fluid is the same as the direction of the flowmeter arrow.

5. At least 5xD (D is the inner diameter of the flowmeter) straight pipe section in front of the flowmeter, and at least 3xD (D is the inner diameter of the flowmeter) straight pipe section at the rear; for easy installation and disassembly, after the flowmeter Add pipeline expansion joints, measuring the distance between the mixing point and the flowmeter when measuring mixed liquids of different media, at least 30 × D (D is the inner diameter of the flowmeter);

6. There should be no strong electromagnetic field near the flowmeter; there should be sufficient space near the flowmeter for installation and maintenance; if there is vibration in the measurement pipeline, there should be fixed bearings on both sides of the flowmeter.

Changzhou Chengfeng Instrument 's electromagnetic flowmeter is a high-precision, high-reliability and long-life instrument. It is very particular about every aspect of the structure, material selection, formulation process, production assembly, and factory testing. Electromagnetic production equipment and flow real-time calibration device, in the software and hardware to ensure product quality. Electromagnetic design with backlight wide Chinese LCD display, full-featured, intuitive display, easy to operate.

Side Type Rock Breaker

Side Small Breaker,Side Medium Breaker,Side Large Breaker,Side Type Rock Breaker

MA AN SHAN GOLDEN STAR MACHINERY CO., LTD , https://www.gsdmachinery.com

Urban emotional drama "My first half" has officially met with the audience in each of David's video and video platforms. The drama was adapted from the novel of the same name by the Hong Kong female writer Yi Shushu. It was produced by Xinli Television Culture Investment Co., Ltd. and tells the story of the life of the full-time wife, Luo Zijun, after she was married and revived with the help of her boyfriend Tang Jing and her boyfriend He Han. Modern thinking about women's independence. Just started broadcasting, "My first half" with a bright personality, briskly scored 8.2's watercress score, can be described as ushered in a good start.

KNM2 Series Moulded Case Circuit Breaker

KNM2 series Moulded Case Circuit Breaker is MCCB , How to select good Molded Case Circuit Breaker suppliers? Korlen electric is your first choice. All moulded Case Circuit Breakers pass the CE.CB.SEMKO.SIRIM etc. Certificates.

Moulded Case Circuit Breaker /MCCB can be used to distribute electric power and protect power equipment against overload and short-current, and can change the circuit and start motor infrequently. The application of Moulded Case Circuit Breaker /MCCB is industrial.

 Korlen electric also provide Miniature Circuit Breaker /MCB. Residual Current Circuit Breaker /RCCB. RCBO. Led light and so on .

KNM2 series Molded Case Circuit Breaker,KNM2 series Small Size Molded Case Circuit Breaker,KNM2 series Electrical Molded Case Circuit Breaker,KNM2 series Automatic Molded Case Circuit Breaker

Wenzhou Korlen Electric Appliances Co., Ltd. , https://www.korlenelectric.com

The gate is the most common part of all buildings and is the pasغير مجاز مي باشدe for people to enter or leave the building. When the door is used in a logistics building, it has certain specific functions. For example, it is a channel for personnel to enter and exit, a channel to and from large-scale equipment, and a channel for entering and exiting goods. These functionally different channels, coupled with the needs of the indoor environment, place specific requirements on various functions of the doors, including specifications, controls, door materials, and safety devices. In addition, from the long-term operation cycle and the value created by the unit time, they must have stable and reliable performance, but also have a timely after-sales service system to ensure long-term use and production continuity. Therefore, we use the concept of equipment in the logistics project to understand and use the concept of equipment.

1. Sliding door (sliding door or smooth door): It is mostly used in traditional warehouses and takes up space. Applicable to use frequency, sealing position is not high.

2, Pingkai Men: Mostly used for traditional warehouses. Applicable to the location where the door opening is small, the sealing requirements are not high, the frequency of use is low, and the environment inside the library is not demanding.

3, rolling shutters: Suitable for no insulation requirements, low switching frequency. Although there are also thermal insulation shutter doors, its structural characteristics determine that its thermal insulation capacity will not be too strong.

4. Industrial sliding door (industry sliding door): This is a professional industrial exterior door, which is most commonly used in foreign industrial plants and logistics buildings. Its various functions are gradually developed in the industrial and logistics environment, and can meet the needs of insulation, sealing, high-frequency switching, service life, professional control, and use safety. Now it is increasingly being used by our country. Industrial and logistics projects adopted.

5, industrial fast door: This is a more professional industrial door. Its maximum opening speed is up to 1.2m/s (average speed) and its maximum instantaneous speed is up to 2m/s. It is used in the connection channels of different units in industrial plants and logistics libraries, which can block the air flow, so as to ensure that the environment of a specific unit meets the standards. At the same time, its high-speed, high-frequency switching, but also to ensure smooth operation. At present, most of the fast doors on the market are rolling curtains, and due to high technical requirements, they still need to be imported.

6, professional insulation door: This is a kind of professional use in the very warm state of the door, such as low-temperature refrigerator doors, high temperature doors and so on. This kind of door pays more attention to the insulation and airtightness, and it has more translational type.

7, other professional doors: such as high clean sealing doors, high clean automatic doors and so on.

Rubber/silicone zipper puller

SHAOXING COUNTY MOYUN TEXTILE CO.,LTD  , http://www.china-embroidery-factory.com

First, use:

The electric heater for wind turbine gearbox is a heater specially designed by our company for the wind turbine gearbox. It is suitable for heating the oil in the wind turbine gearbox, and it can also be used to heat the oil on the outdoor oil tank.

Second, characteristics:

1. The electric heater for the wind turbine gear box is connected with the gear box through the flange. Because the heater itself is sheathed, it has the characteristics of large heat dissipation area, fast heat transfer, long service life, and easy replacement and maintenance.

2. Since the heater is sheathed, if the heating element is damaged, only the internal heating core needs to be replaced without replacing the entire heater, which greatly reduces the subsequent investment of the user.

3. The surface load design of electric heaters for wind turbine gearboxes can be determined according to customer needs. Since the actual operating environment of wind turbine gearboxes is relatively poor, the surface load design of this model heater should be as close as possible to 0.7 W/cm2.

5. Operating voltage tolerance: not more than 1.1 times its rated value. The enclosure should be effectively grounded.

6. Working environment: Relative humidity is not more than 95%, no explosive, flammable and corrosive gases.

7. Heater material: carbon steel or stainless steel.

8. The maximum working temperature: 200 °C.

9. Working pressure: less than 0.6MPa

10. Specifications and Dimensions: See the following table and figures

Steam Trap

lt takes cobalt-chromium-tungsten alloy as the sealing surface. The valve seat and spherical valve spool with long service life

adopt high-quality alloy which can resist abrasion and corrosion and are durable in service. The air doesn't leak through the drainage hole on the inverted cylinder, which can effectively prevent steam and air from blocking up.

steam trap types, thermostatic steam trap, steam trap boiler

LLY PACK(foshan) Co.,Ltd. , https://www.llypack.com

Every household now has a faucet, but there has always been a hidden danger in the faucet, that is, the lead in the faucet exceeds the standard. The excessive lead in the health of family members is a great hazard. How much do you know about these hazards?

The nervous system is most vulnerable to lead. Lead can cause changes in visual intelligence, visual motor function, memory, reaction time, language and spatial abstraction, sensory and behavioral functions, and fatigue, insomnia, irritability, headache, and hyperactivity.

Lead can inhibit the synthesis of heme and iron, zinc, calcium and other elements of antagonism, induce anemia, and increase with the increase in lead poisoning. Lead poisoning can lead to excessive accumulation of intracellular calcium ions, which increases the tension and tension of vascular smooth muscle and causes hypertension and arrhythmia. Long-term exposure can cause chronic nephritis in children and adults. Due to the large compensatory function of the kidney, the renal toxicity of lead is often underestimated. Lead reduces the clearance of kidneys, which in turn increases the retention of lead in the kidneys and other tissues.

Lead binds to antibodies. Increased levels of lead in drinking water reduce circulating antibodies. Lead can act on lymphocytes to reduce complement titer, increase the body's susceptibility to endotoxin, reduce resistance, and often cause repeated infections of the respiratory tract and intestinal tract. Lead can inhibit the secretion of vitamin D-activating enzymes, adrenal cortex hormones and ****, leading to physical development disorders in children. Each 100 μg/L increase in blood lead levels is less than 1-3 cm in height.

High Power Underground Light

High Power Underground Light,Waterproof High Power Underground Light,Solar Powered Underground Lights,36Watt Under Ground Linear Light

Shenzhen Poolux Lighting Co., Ltd. , https://www.pooluxled.com

China's machine tool industry is currently actively adjusting its existing structure, not only to maintain its current advantages, but also to continuously develop and progress. As the machine tool industry needs long-term development, it needs constant R&D and takes a differentiated development path.

In terms of R&D, the company implements an innovative development strategy based on the country’s existing special support. With the theme of the enterprise and innovation as the driving force, the machine tool industry has a large investment and is slow to achieve effective results. If only relying on the company’s own efforts, it is obviously unable to achieve long-term development. A number of companies participate in the common technology research and development, and at the same time introduce scientific research institutions to participate in the implementation of the public-private partnership PPP to promote research and development; the national level needs to increase basic research investment and R & D personnel training.

In 2014, it is expected that the production of machine tools will increase and import demand will remain significant, but the demand will be mainly concentrated at the high end. At the same time, the mid-end products will also increase their existing structure after implementing local market services in foreign countries.

Face Mask

KN95 Protecive face masks adopt the GB2626-2006 standard, which stipulated the production and technical specifications of respirators .there is  strict requirements on materials, structure, appearance, performance, filtration efficiency , breath resistance, test methods, product identification and packaging.

Protective Face Mask,Anti-particulate Protective Mask,Face Mask KN95,Non Medical Face Mask

Jilin Province Wanhe light Co.,Ltd , https://www.wanhelight.com