Interested to Buy Any Domain ? << Click Here >> for more details...
What is the difference between 2 wires RTD's and 3 wires
RTD's.Kindly explain the wiring diagram.
- 1 Answers
- 5147 Views
- QAFCO, I also Faced
- E-Mail Answers
Answer Posted / dale bergemann
RTD is Resistance Temperature Detector. It will change resistance at its leads when the sensor is exposed to changing temperature. They are commonly found in windings of motors or surfaces of bearings or immersed in liquid to produce a resistance when converted by a monitoring device can indicate degrees in the medium it is placed.
A lead wire is place on each side of the sensor and the resistance can be measured across those two leads, commonly Red and White in color. Because it measures ohms, the value will be affected by the length of the leads, which will 'bias' the reading and convert incorrectly. To address this, a third wire can be added in parallel with the white wire. Now the monitor measures the resistance between and R & W and compensates it with the resistance measured between the two white wires. Now we have the true resistance change of the sensor, without the error caused by lead length.
They also make 4 wire RTDs which have two Red and two White leads to further enhance capability and increase accuracy by analyzing in a bridge fashion.
| Is This Answer Correct ? | 0 Yes | 0 No |
Post New Answer View All Answers
what is the vvvf in the dumbwaiter?? or lift. what is the actual process?/
We need to current density & short circuit calculation at 65kA for aluminium & copper busbar.
what is the difference between switchgear and circuit breakers and is there any difference between outdoor and indoor switchgear and circuit breakers , and how would you differentiate between switch yard and substation and grid station . thanks
I am apply the AAI. So i want electrical sample question paper in technical with answer my id is vijayjobsmart@gmail.com
Define corner frequency?
how to Select Lighting arrester? What r the parameters to be considered for the selection of Lighting arrester ?
Why derivative controller is not used in control systems?
I am going to appear RRB Sr. Section Engineer Exam, Electrical. Can you send me previous year questions of RRB Electrical engineer. specially Section Engineer questions. my email id is likerahulworld@gmail.com
I am interested to know what does 15 KVA DG set actually means? If I dont know the DG rating, is it possible to identify KW by simply knowing the diesel consumption?
What is dynamo?How it works and what is the function of dynamo in a DG.
what is the function of anti pumping relays? what is KVAR? How it is generated in alternator? What is 3rd Harmonics? What is IDMT relay?
why we use sinosidal voltage / current instead of others in system?
what is the difference between Central Battery System and UPS in applications and uses? and why UPS suitable for Computers and central battery for emergency lighting?
What is the previous name of Cox's Bazar
What will happen if the voltage in my house drops from 220V to any lower voltage?
