Answer / carl_ellis

If the lamp lights when the wire from lamp to the sending
unit is grounded, then the other side of the lamp has
power. The circuit is designed for the lamp to light when
the sending unit provides a complete electrical circuit.

The lamp lighting proves that
- the bulb is good
- there is power at the lamp.

If the warning lamp does not light when it should, then the
sending unit is faulty.

Carl Ellis
Measure First

A DP transmitter is used to measure the level of an open tank. The drain line of the tank is connected to a control valve, and is configured as, if the level of the tank is 90% the valve should get open 10%. And if the tank level is 10%, the valve should get open 90%. Draw wiring diagram and explain how to configure DP transmitter and control valve using HART communicator. If the span error at output is 1%, what will be the %opening of the control valve at 60% level of the tank?

0 Answers  

---

what is formula mv convert to temperture

4 Answers   Sterlite,

---

Sir, I want junior executive, Instrumentation question papaer for IOCL, Plz send to arabinda.ghosh83@gmail.com

0 Answers   IOCL,

---

I need the intools training institute address in india. Intools subject oriented local authors books.Refer me plz

3 Answers  

---

what is sequence table in DCS . make a logic in sequence table for tripping of ID fan in Boiler(in YOKOGAWA CS 3000 DCS).

1 Answers   Yokogawa,

---

What is diffrent profibus & OFC Communication

1 Answers   Priya Cement,

---

kindly tell where orifice,nozzle,air foil,ventury used in flow measurement?

1 Answers  

---

what is the diffrence between LCN and UCN

2 Answers  

---

can u please tell me the different types of valve uses and wt purposes it is used ~!(controlling the flow other than that which valve should be used in what place)

2 Answers  

---

In a ball valve which require 24v dc supply to operate, whose solenoid valve doesn't have any + or - indication, how can we make wiring connectionto solenoid valve?

1 Answers   Process Control Technologies,

---

without color coding, without nameplate, without multimeter how can you find the type of thermocouple???

1 Answers   Sabic,

---

Single acting ON-OFF valve. it is air to open. when sov energized , valve will be open, so during that if air fail then what will be the condition of valve ( open or close ) ???

4 Answers  

---