Answer / manohar chotrani

Negative range of a transmitter is nothing but the range
required to measure the vacuum of any equipment.If the
pressure inside a tank or equipment drops below zero and
goes to negative side then it is measured by the
transmitter.Maximum of 14.7 psi vacuum can be measured at
ideal conditions.For example a transmitter range is
calibrated as -600 to +600 mm of water means the
transmitter will measure negative pressure inside a pipe or
column or tank and give output as 4 mA and at pressure of
600mm(positive )it give 20 mA output

How can I map a tank?  Tank 15m h and 42m dia. we just fixed radar type lit. its reading shows over range. Now its required mapping ?

1 Answers   CMC,

---

Can Any body tell me about the Contact or Email id of any good Consultancy which help me to find a job in Instrumentation Field in India .I have Six years of Work Experience in the Same field.Please revert me back on shammi_gwalior@yahoo.com ?

0 Answers  

---

open tank and close tank leavel transmiter about range and calibration

0 Answers  

---

Can you tell me how we will select RTD and Thermocouples for Temperature applications. I.e How we will choose accurate one for a specefic operation if both having same ranges

3 Answers   Nippon,

---

what is positive feedback and negative feedback?

2 Answers   CEPC,

---

---

What is surge in compressors? How to detect and control it?

1 Answers   DEWA,

---

What is the relationship between GAIN and PROPORTIONAL BAND.

1 Answers   Kharafi National, Sabic,

---

What is difference between ESD and PLC please Explain me clearly.

0 Answers  

---

hello i'am samad.Any one Can help me! How to calibrate Vaccum Transmitter DP Type range 0 - 50 mbar abs by hand pump calibrator.

4 Answers   Bharathi Cement,

---

What is the Difference between PE,IE and ISE

2 Answers  

---

i have calibrate rosemount make level transmitter , wht can i do ? my tank capacity is 30,000 liter

9 Answers   Equate,

---

explain level transmitter working

1 Answers  

---