Answer / inst

DP switch have two ports that is high and low..Example : Our s.p is 50 psi...Forfor this we have to apply pressure to high port  at the same time lp port should be open to atmosphere..When pressure reached 50 psi switch contact will be changed..

Answer / rahul

For DP switch calibration first apply zero pressure to low side and gradually increase high side pressure upto dp range. (0 to high) then increase low side pressure upto pressure previously applied on high side ( high to 0). then again increase high side pressure upto dp range (0 to high). then increse low side pressure upto equilizing with high side pressure ( high to 0) . this process will go more than 5 scale to have more accuracy upto maximum operating line pressure.

what is the difference between venturi and orifice meters?

9 Answers   Medha Servo Drives,

---

In your own words, would you expect an ultrasonic level device to work better in a pressure vessel with a high pressure or a strong vacuum, and why?

1 Answers  

---

What is the formula to know the error of weighfeeder after having drop test.

3 Answers  

---

Working principle of vibration sensor?, Type of vibration sensor? , Can we use vertical instead of horizental or vice versa?, if not Reasons?

2 Answers  

---

thermocouple output is AC OR DC??

17 Answers  

---

What is mean by Adapter block and net block?

1 Answers   Hospira,

---

How addressable fire systems work? Pl. send details with architect.(Loop), also send details regarding Gas system. Pl. help me.Thanks

0 Answers   Siemens,

---

Can anybody tell which type of quections are asked in interview for projects? plz give its urgent.....!

2 Answers  

---

please help me to get the below mentioned quires,which i have to submit for my client.[INSPECTION TEST PLAN] 1]I.T.P for Calibration of all instrument. 2]I.T.P for SS tubing. 3]I.T.P for Fire & Gas devices. 4]I.T.P for CCTV & telecommunication. 5] I.T.P for loop checking.

1 Answers  

---

what is actual difference between pressure Transducer & Pressure Transmitter.

5 Answers  

---

What will the new flow factor if D/P Transmitter is RE-RANGED from 25" WC to 50" WC

3 Answers   ADMA OPCO,

---

How will u convert the mmh2o in mass or Volumetic flow rate in DP Flow Transmitter. Give me the Brief explain using the formula

1 Answers   Walchandnagar Industries,

---