Answer / jazz

Use a smart communicator device such as HART
calibrator/communicator. Connect it across +/- terminals,
whether in the instrument, junction box, marshalling, or
system cabinet, then initiate communication with the smart
transmitter. If you calibrate on-line, the HART communicator
will ask you to put device in manual, and advise control
room that you are calibrating the HART transmitter. Using
the HART communicator use loop/calibrate function and
simulate, 4,12,20 mA corresponding to 0%,50%, 100% of level
or pressure.

What is cut off relay? And why use in PLC and DCS?

0 Answers  

---

WHAT IS ANNUBAR?

7 Answers  

---

Lux meter is the measuring device to measure the lux level of lighting fixture. in industrial sector two types of lighting fixture is being used as street lighting purpose 1. HPSV (Sodium) and 2. HPMV (Mercury). HPMV having white light which is an combination of red, blue and yellow colour, while HPSV haivng Yellow lighting. in HPSV red & blue colour will be absent. during measurement of the lux level of HPSV and HPMV fixture. 1. Lux meter can measure the actual lux level of both fixture? 2. or it will show false reading for HPSV fixture light as it has only yellow light present. please give me answer

0 Answers   Ace Info,

---

Instrumentation engineer please reply me,I am electrical engineer ,what is the future in instrumentation dept {presently working (P&ID) Design} for me,whether good future for me as instrumentation department.what side can i get job in future

3 Answers  

---

how to calibrate differential pressure switch

2 Answers  

---

Watt is Wrms define rms?

2 Answers  

---

What is seeback effect?

3 Answers  

---

What is principle of ultrasonic level transmitter?

3 Answers  

---

explain the working of Coriolis Flowmeter.

2 Answers   ABB,

---

WHY TEMPERATURE TRANSMITTER USED AS WE CAN CONTROL THROUGH THERMOCOUPLE/RTD

5 Answers   Samsung, Thermax,

---

which type of signal used in instrument?

3 Answers   Emco, Makson, Sail, TATA,

---

Why we use 4 to 20 mA, (This is International Standard) instaed of this can we use 4-16, or 4-24 or 3- 15 or any other range

13 Answers   ONGC,

---