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Why is the new instrument always in the water cycle without ignition?

First of all , the temperature in the inner bucket is not stable. Therefore, the instrument will keep in the water cycle until the water temperature gets stable; When the temperature probe displays temperature, it may be the problem of the main board. In this case , replace the main board and then the instrument can work normally.
For the old AC/PL with PCI, what is the reason that it can not connect the computer when the settings of software communication, card address, card coefficient are all correct?

User is required to click bucket A or bucket B.
For the first water-adding of a new instrument, why can not the water get into the jacket after turning on the water valve?

There are some air in the water path for the new instrument. However, the air should not exist in the pump for the normal operation. That is why the pump will remove the air first after turning on the instrument, and then get the water into the jacket. If the water can not get into the jacket after turning on the water valve, user can turn on and off the water valve for several times in the hardware debugging interface until you hear noise while turning on the water valve.
What issues we should pay attention to while using the balance weights?

1. It is not allowed to touch the weights directly with hands

2. When the user uses weights, be careful not to damage it; The weight is not allowed to use for other functions

3. The weights should be placed in order according to the requirements

4. Each balance must be equipped with exclusive weights

5. To reduce the analysis error, the same weight is required to be used for weighting in the same group
What is ash coning and quartering method?

Pile the coal into a cone according the the requirements, and then flatten the cone; Divide it into four equal fan sectors; Take the two relative fan sectors, which is called ash coning and quartering method.

Watch operation video at: Manual Sample Preparation: Coning and Quartering Method according to GB Standard
Why does the national standard describes the allowable error by air dry basis?

For the allowable errors from different laboratories, the air dry basis is very easy to get affected by the moisture changes. The air dry basis from different laboratories have no comparability, that is why we need to use the sample on air dry basis to compare the precision from different laboratories.

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Why is the new instrument always in the water cycle without ignition?

For the old AC/PL with PCI, what is the reason that it can not connect the computer when the settings of software communication, card address, card coefficient are all correct?

For the first water-adding of a new instrument, why can not the water get into the jacket after turning on the water valve?

What issues we should pay attention to while using the balance weights?

What is ash coning and quartering method?

Why does the national standard describes the allowable error by air dry basis?