in any transimitter (flow/level) there are three terminals
for supply& test (+,-,+)in two wire,24VDC given to Tx.,but
how 4-20 ma signal travels thru same wire (as it is for
24VDC input supply)?
Answer Posted / karthik
24VDC is the driving voltage for the entire loop of the
transmitter. The loop consists of the supply, t/x and may be
some load resistance. The transmitter's min. working voltage
is around 12V. So t/x is bound to give a 4-20mA o/p based on
the range of the measured process variable if it has a
supply more than this min. value.
Primarily 24VDC is to drive the electronics associated with
the Primary sensing element present in the t/x.
| Is This Answer Correct ? | 0 Yes | 3 No |
Post New Answer View All Answers
can anyone tel the syllabus or previous year question paper for BHAVINI(EIE)2014.
What are the types of control valves available
Can I route 110 VDC and 24 VDC in a same Duct for our Interposing relay cabinet? IF yes or NO Please provide me IEEE Std. for the same. Please i required it on Urgent basis, i need to design IRP Cabinets and we have MCC 110VDC and Our Coil side is 24VDC, Please help as soon as possible.
In apron feeder how TPH is calculated?
Can any body tell me about SAP MAINTINANCE MODULE. WHAT IS its function and application. And study material Source about it. I shall be very thankful.
Explain how thw analog to digital converter works with the circuit diagram
Difference between dcs and plc including date processing and architecture.
what is installation and commissioning of (fat & sat) of power plant dcs ? this question keeps in desirable conditions of one company .
What is the main difference between Cavitation and Flashing?
TEMPERATURE VARIATION FOR FREQUENTLY.
how pressure transmitter work, what is its principal to measure and how its generate signal. for pressure transmitterinstallation which precautions must be taken ??
Can Any body tell me how to check Modbus Settings in ER300N L&T trivector meter?
What are the materials available to prepare individually for competetive exams in Instrumentation field? Plz reply...
What are different types of orifice plates? State their uses.
What is mean by analytical instrumentation?