Sampling Cooler/ Enfriador de Muestros/ Cooler for Samples for Condensed Water

Sampling Cooler/ Enfriador de Muestros/ Cooler for Samples for Condensed Water

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Loading Port:: Nanjing

Payment Terms:: TT OR LC

Min Order Qty:: 10 set

Supply Capability:: 100 set/month

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FAQ

We have organized several common questions for our clients，

may help you sincerely：

①How about your company？

A world class manufacturer & supplier of castings forging in

carbon steel and alloy steel，is one of the large-scale professional

investment casting production bases in China,consisting of both

casting foundry forging and machining factory. Annually more than

8000 tons Precision casting and forging parts are exported to markets

in Europe,America and Japan. OEM casting and forging service

available according to customer’s requirements.

②How to guarantee the quality of the products？

We have established the international advanced quality management

system，every link from raw material to final product we have strict

quality test；We resolutely put an end to unqualified products flowing

into the market. At the same time, we will provide necessary

follow-up service assurance.

Q:e.g. medical equipment: Best thing to do is use a surge protector and if the equipment is costly enough use one voltage stabiliser/CVT/UPS in addition.

Q:how we can design the power rating of any electrical equipment. as per my understanding only way is is to change the resistance of coil( winding if motor, filament if lamp).if it is correct then the equipment will be burn if resistance is low for low power rating. Eg. resistance of filament of 10 w lamp is lower than the resistance of 100 w. generally life of 10 w lamp is higher than 100 w. but in electrical point of view the life of high value of resistance equipment will be higher than the low value value of resistance. means, 10w bulb will glow longer time comparatively 100 w bulb. since 10 w bulb has high resistance , so this bulb's life should be higher than 100w bulb. can anyone explain how to design the power rating of any electrical equipment in line of other electrical parameters.: Most equipment involves loadings on all the materials used and these materials have various load-carrying limitations. Design essentially balances these against each other whereby the materials' limitations often interact on the design. For existing design variation much empirical data and experience data will be available which will accelerate the design process but for a competely new design, the process may be iterative and toward the end may even need several prototypes to be built and tested. You can't merely change the resistance of a winding in a motor and get a higher rating. Things like core flux density and temperature-rise of insulation (affected by cooling, whatever type that may be) must all be checked. Lamp filament resistance is indeed lower for a higher rating but filament surface area (to get the radiation) and temperature will have to be decided which involves knowing and designing how the lamp radiates light and how it is cooled. The lifetime of a bulb can be quite precisely designed in, largely by the design temperature choice.

Q:I need this for my class and I just need a site to start off with! Thanks: (1) Try: MSDS (wikipedia) (2) Also try: Electrical equipment in hazardous areas (wikipedia) It may depend on which country you live in. References and external links for (1) and (2) above are included.

Q:I accidentally connected the negative and positive terminals of my battery with a wrench, I have checked all the fuses and none look to be blown. What else should I be looking for?: Do you have electrical power at all, on any thing? You don't say what else it affected. Could be a fuse link burned that controls all the power to the car. If just your lights, some light switches have built in breakers, which shut off the lights when a wire in the light circuit, like a door light, shorts out. This protects the rest of the system. There might be a reset on the switch. But it would be car specific, meaning how to reset it would be in a manual, or someplace, and might require taking the switch out of the dash. If that is not the case, look for a 30 amp fuse which is usually what lights use, that might be blown.

Q:How do I calculate (using mathematical equations) the load of my equipment to support and find the correct alternator and battery for my vehicle? I'm looking for an in-depth equation that explains what I have to find from the equipment specifications to the mathematical part evolved. I want to make the right choice for my vehicle without any word of some salesman to sell me a product with little to knowledge of the product they are selling.: Ideally , you want an alternators output amperage to be equal to the maximum amperage draw of all of your amplifiers plus about 40 amps to run the rest of the electrical equipment in your car. So if your amplifiers draw 150 amps at full power you would want a 190 amp or larger alternator. If you can not get a alt. that large , extra batteries can help fill the gap. The rule of thumb for batteries is one cca of battery power per watt of amplifier power.

Q:(1) source would be from a house and another source would be from a battery [and may not always be on but when on should have priority over the house's power].: i does no longer say converted incredibly. yet certainly one of my best acquaintances and the guitarist for our band now did no longer understand plenty in any respect approximately punk or pre-punk when I met him. He became a reasonably super steel head, nonetheless is to be truthful, yet he had a confusing time appreciating issues that weren't as confusing and quickly and technical as Slayer or Megadeth or Sepaltura, yet over the years for the reason that track is an excellent part of the two our lives we uncovered one yet another to our own musical tastes. and because then he's truthfully found out that some properly placed chords or an common yet catchy progression is well worth all the skill interior the international. besides the fact that he nonetheless learn up on each and every thing and is ridiculously reliable at guitar of any variety, the track he writes himself is almost consistently a funky riff or progression and his CD series has a extremely super punk factor of it. And in tunr i've got taken a liking to a pair of his steel, besides the fact that I nonetheless won't be in a position to stand something with gruesome gruff vocals, like Sepultura or that variety of factor. I even have in spite of the indisputable fact that taken an spectacular liking to the CD Reign In Blood by Slayer, do no longer understand why.

Q:For instance, could you use normal 14/2 building wire normally used in houses for 115 volt AC lights and outlets and run DC through it provided that the voltage and current does not exceed 120 volts and 15 amps?Could you use normal in-wall light switches in the same way as long as the DC volts and amps does not exceed the AC rating?: No, this is not safe as far as switches are concerned. When you open a switch (turn a light or appliance off), a tiny spark is generated which erodes the contacts slightly. Over a period of many actuations of the switch, it will degrade to the point of becoming dangerous or non-functional. Every 0.02 of a second (50Hz mains) or 0.017 of a second (60Hz mains), the voltage in an AC circuit is instantaneously zero. The tiny spark generated cannot last longer than this at most, and some of the time even less. Therefore the erosion of the switch contact is small and the switch last for many years. In a DC circuit, the spark lasts as long as it naturally would. This may be a lot longer than 0.017 sec and may erode the switch contact a great deal faster than it would for AC. This causes a defective, maybe dangerous, switch much sooner. The longer duration spark itself is a safety hazard from the point of view of fire safety. A DC switch for 115V will be a much more heftily engineered than an AC switch. A standard AC switch must not be used for DC.

Q:I have been warned that some electrical equipment could possibly be damaged by chinese electrical systems.what voltage system does china use. is the supply unreliable and prone to spikes or surges etc.: China uses 220V. If you don't trust the system, then get a surge protector + a converter and use them together with your equipment. I don't know what country you're from, so I can't suggest a converter because different countries use different voltages. When I was in China, I never experienced any problems with the electrical system and I had my cellphone, video camera, digital camera, hair straightener, etc. plugged in frequently. If you're in the big city, I doubt anything bad would happen.

Q:I just don't understand it, what does it mean when people say 3 phase or 2 phase Voltage, I know higher phases are used to power bigger more voltage demanding things but what does it mean?Can you get both AC and DC in each phase?Is phase just basically saying higher phase higher voltage for higher voltage equipment?How do you convert between phases?Are high phases created with the use of transformers or can they be created directly from things like wind turbines?What is the maximum and minimum phase?How does the phase effect the amps?: Let me explain briefly about the Electric power source and what it has. We get electric power source normally from power station where it is produced by means of Electric power generators. The generator has an Armature which comprises three windings (say coil). Each winding has two ends and all these ends are connected with each other. From Armature windings 'THREE LINES' are drawn to transmit the Electric power source. {Power station produces very high voltage (Electro Motive Force) and transmit the source through over head lines to the various step down Transformers where it is finally step-ed down to low voltages ranging from 600 to 220 volts and supplied to us.} As said above the 'THREE LINES' that Carry's the electric power source from the power stations to us are said as THREE PHASES. VOLTAGE is the unit of the 'Electro Motive Force' (EMF) which is supplied to us from power sub station. What is 220 and 120 volt ? Power substation Supply power source to us by means of 4 wires where the three wires which are called Phases as said above and the fourth wire is called as Neutral. The phase wires carries power source where as Neutral wire carries no power source. America and other countries which follows American Standard, use a phase wire and a neutral wire for 120 volt Supply especially for lighting loads and two wires of phases are used for 220 volt Supply for appliances etc., If you measure the voltage between phases it will read 220volt and phase to neutral it will read 120 volt. Manufacturers of motors, home appliances, electrical equipments, etc., are the deciding authority to Communicate the voltage requirement of their PRODUCTS based on the way they made them. We can find this detail in the name plate of the equipment. Regarding AC and DC Supply. Batteries are made to Supply DC Supply and it can be used for AC equipments with suitable invert-or to change DC to AC.

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