Construction Hoist Steel Structure
Construction Hoist Steel Structure means the construction hoist spare parts like Construction Hoist Mast Section, Passenger Hoist Cage, Construction Hoist Wall Tie and so on.
The length of each mast section is 1508mm, the rack is fixed on the mast by three bolts and it can be exchanged. For the single cage hoist there is only one rack on the mast section, and the mast section can be used for the double cages hoist by increasing one rack. The section of the mast is diverse, select one type section according to different hoist. The mast sections are bolted together with M24 bolts and nuts to form mast. The mast is tied to the building with tie-in and is the guide rail of the cage. According to the user`s or circumstance`s request, surface of mast is hot dip galvanized, which can prevent it rusting.
The tie-in(wall tie) is the linked part between mast and building, to keep the stabilization of the mast. Distance between the tie-in is about 6~9m alone the mast. There are several types of tie-in. Select one of them according to need, tie-in can adjust the vertical of mast in definite ranges. According to the user`s or circumstance`s request, surface of the tie-in is hot dip galvanized, which can prevent it rusting.
The cage dimension(L×W×H)(m): 3×1.5×2.5. We can also manufacture cages of other size according to the user`s needs. The material of the cage and the door material can be steel wire weave, aluminum-plastic panel, punched-plate, figured aluminum board or other type according to user`s needs. The gate is equipped with drawing gate,include small turn over gate.
Construction Hoist Mast Section,Building Hoist Mast Section,Passenger Hoist Cage,Construction Hoist Wall Tie, Construction Hoist Anchorage Frame SHEN YANG BAOQUAN BUSINESS CO., LTD , https://www.sytoplesstowercrane.com
The order of calibration varies according to the conditions of different instruments. Some requests are calibrated in order, others are not required, and the instrument will be automatically identified. Refer to the instruction manual of the relevant instrument.
Regardless of the pH meter, pH=7 must be corrected, and at the point of correction at two or more days, pH=7 should be corrected.
Two points are generally sufficient to meet the requirements. If the requirements are high, the third point is considered. Some instruments can correct three points, there are modes available, you can use this mode directly. Some who do not have, usually adopt two-point two-point proofreading, that is proofread twice.
Configure these calibration reagents as follows:
1. pH4.00 solution: 10.12 g of potassium hydrogen stannous hydrogenate was dissolved in 1000 ml of high purity deionized water.
2. pH6.86 solution: using potassium dihydrogen phosphate 3.387 g, GR disodium hydrogen 3.533 g, and the solution in 1000 ml of high purity deionized water.
3. pH 9.18 solution: 3.80 g of GR borax was dissolved in 1000 ml of high-purity deionized water.
Note: The water used to prepare the 2 and 3 solutions should be boiled (15-30 min) beforehand to remove the dissolved carbon dioxide. Avoid contact with air during the cooling process to prevent carbon dioxide pollution.
How the pH meter needs to be calibrated is actually the best. What is the third point correction of the pH meter depends on your sample situation? As you said, there are many kinds of calibration solutions from pH 1.68 to 12.46, depending on the final pH range of the sample. Use a suitable calibration solution. Our common use is 4.00, 6.86, 9.18. If your sample is more basic, you need 9.18, 10.01, and 12.46.
February 12, 2024