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AIM/PURPOSE: To describe the instruction for the calibration of Dumpy Level to ensure that equipment is maintained in fully serviceable condition, is safe to operate and meets environmental requirements. FOR THE CALIBRATION OF DUMPY LEVEL The method described below is to be used on-site check prior to use as to the accuracy of the Dumpy level between calibration checks. This Work instruction shall be conducted at the commencement and completion of a contract. 1. Drive two pegs, "A" & "B", into the ground six metres or more apart 2. Set Dumpy up at "C" 3. Shoot a level at "A" and "B" 4. Relocate Dumpy to "D" and shoot a level at "A" and "B" 5. Record the appropriate result in the workbook. (Levels shot at "D" should be within ± 10mm of "C") D A C B
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How is motor operated valve calibrated?
Usually with electronically controlled valves or any other device that has movement limits, there will be either a slotted ribbon, or 2 sensors and a stepper motor where the device can auto calibrate by moving until both sensors are hit, then it can calibrate it's self and move to a predetermined home position. The same is with a ribbon, (a good example of that design is a printer where you will see it spin the feed wheels and move the heads from side to side on startup to calibrate it's self) Usually electronically controlled valves do not need any user adjustment for calibration. (at least with heating and cooling systems)
How do you check the level of a machine with a spirit level?
Put the spirit level on a flat surface, check that the bubble is in the middle of the little glass vial. If it is, the machine is level.
What is the difference between us invert level and ds invert level?
US = Up Stream invert level DS= Down Stream invert level If detailed on a manhole, the difference being the gradient of pipe in chamber from one end to the other.
Why hotwell level is maintained in condenser?
High hotwell level will get the cooling water tubes of condenser submerged in the condensate hence cooling efect will be reduced consequentaly vacuum will drop. Low hotwell level will lead to low suction pressure of Condensate Extraction Pump hence it may lead to cavitation.
What does 57dB sound like?
I think that would be about the sound level while watching a TV. I think housing codes are set to maintain a 45 dbA level sound-proofing for the interior of homes.
How do you level a dumpy level?
it is a spirit level
How do you calibrate level switch?
how we calibrate the level switch
What is the advantage of auto level than dumpy level?
The auto level makes it easier to do the work. Using the dumpy level requires you to put in all of the work.
How do you do temporary adjustment of dumpy level?
It as 3 following steps to adjust the dumpy level 1.SETTING 2.LEVELLING.3FOCUSING
What is advantages and disadvantages of dumpy level?
One advantage of the dumpy level is that it is extremely mobile. A disadvantage is the difficult in using and making accurate measurements.
What level do you use to shoot a datum?
Dumpy
What is the difference between a theodolite and a dumpy level?
In dumpy level we can check only horizontal angles whereas in theodolite we can check vertical angles also.
Why is dumpy level known as dumpy level?
It is named so because of the shorter telescope it uses and also because in the original dumpy level the eye piece was an inverting lens such that it gave a shorter view for the same power of lens compared to wye level.
What are parts and functions of a dumpy level?
You can find all of these parts by looking up the diagram of a dumpy. They are available with a simple image search.
What are the fundamental axes of dumpy level?
i honestly dont know
How do you use dumpy level to find the relative heights?
Dumpy level provides a horizontal line (parallel to earth's curvature); you can read the scale by holding it normal to the ground level. Take separate readings for separate points then compare them
How do you adjust the the dumpy level?
First take the dumpy level to the place of surveying and place the tripod on the ground. Make sure that the three points of the tripod is placed such that the observer can take readings quite easily. Then take the dumpy level and place it on tripod and fix the center nut and make sure that the dumpy level doesn't shake. Then check the bubble level in the dumpy level and use adjust the main level screw so that at least 2/3 of the bubble is inside the circular area of the bubble level. Then adjust it by the other two screws and rotate the dumpy level 90 degrees and check whether the bubble shows a leveled stage. If it shows that the bubble is centered then it is O.K the dumpy level is leveled..... Then in order to take a reading, the u bubble should have to be leveled adjust the screw in the right side(there are a few adjusting screws,please get to know the actions performed by the screws, for that we must handle the instrument for sometime) and make sure the 'U' shape is formed. Now the instrument is ready take readings.....
