How to calibrate level switch?
Answers were Sorted based on User's Feedback
Suppose you using Float/ displacer type of level switch.
Do the followings:
1. Fill the process into chamber of level switching mark.
2. Contacts of level switch should be changed.
3. If already, closed contacts, then should change to open condition.
4. If contacts not changing, do the knob of switch to change.
Suppose you can not fill process into chamber.(Process may harmful, like ammonia etc).
1. Note the process specific gravity. Suppose it is 0.67.
2. Your height for level switching is 1000 mm.
3. Use water to fill into chamber for calibration instead of process.
4. 1000 x 0.67 = 670 mm
5. So fill into chamber up to 670 mm water. It will operate the switch.
aftabmazari@yahoo.com
Is This Answer Correct ? | 5 Yes | 0 No |
Answer / mahalingam
The switches all are working in Digital mode.Like 0 or 1. To do the calibration confirm the NO & NC. Basically it is NC when the process reaches the desired level then the circuit will be NO.
Is This Answer Correct ? | 0 Yes | 2 No |
what is instrument philosophy
Thermocouples work as follow:
1 Answers Dashen Brewery, Tata Power,
LADDER LOGIC Can any body state Logic on following condition Instructions to use 1-XIC 2-XIO 3-Output ONLY Program Push 1st button On - 1st lamp should On Then Push 1st button Off - 1st Lamp Should remain on Push 2nd button On - 1st lamp should Off and 2nd lamp should On Then Push 2nd button Off - 2nd Lamp Should remain on.
if differential pressure created by orifice falls below vapour pressure of liquid flowing through it what will happen
where cn i find the previous years question paper for psu exam???????//
In turbine what does term CDP, NI, NH, HSSOC means.
calibration of instruments.
HI FRIENDS IHAVE QUESTION 1.WHAT IS PARTIALSTROKE TEST?WHY IT IS USED ON ESD ON OFF VALVES?
what is sinking and sourcing....
WHY WE NOT USE 2-20mA,1-20mA,3-20mA or 10-50mA SIGNAL? INSTEAD OF 4-20mA.
6 Answers Hindustan Unilever Limited, Yashmun Engineers,
what is Micro-switch and where it is used......?
In control valve there are two type of valve seat we can use metal to metal seat & soft seat.On this valve seat i have following doubt. 1)I have never seen practically the internal assembly of valve so my doubt is that basically weather the seat is soft seat or metal its basic MOC is same as valve body(SS or CS) only in soft seat we are using PTFE ring & place on valve seat & in metal this PTFE ring is not threr am i correct??????? 2)what are the common general rule for using metal to metal seat & soft seat,means its depend on process parameter like liquid,gas, steam & on valve leakage class.