Answer Posted / d tilston
Both HART and BRAIN are digital protocols superimposed on a
4-20 mA signal. The information available ranges from
configuration settings, to process information.
Hardware wise the two protocols are almost identical. The
significant difference is in how they communicate with their
respective hand held terminals. HART hand held terminals
must have device descriptor, (DD) files to make them aware
of the characteristics of each type of HART device that they
communicate with. As new devices come out the hand held
terminal must be updated to make them compatible. There are
basic functions that conform to a generic standard that most
HART devices support, but typically there are other
functions that are not available unless the correct DD file
is installed in the hand held.
BRAIN hand held terminals are a "dumb" terminals. It is up
to the transmitter to know how to talk to the hand held.
Therefor, the hand held never needs to be upgraded as new
devices come out. The transmitter just uses the hand held as
a remote screen and keyboard.
HART is, by far, the most common protocol of the two. It
should be noted that the BRAIN protocol is available almost
exclusively in Yokogawa devices, but HART is still more
popular, even on Yokogawa transmitters. The hand held
terminal that Yokogawa sells, the BT200 is about 1/5 the
cost of a 475 from Rosemount.
| Is This Answer Correct ? | 32 Yes | 1 No |
Post New Answer View All Answers
what is the minimum power (P=VI)to produce a spark?
what are the steps I have to deal with?
Explain plc level and its type?
How to calibrate Field bus transmitter? procedure ?
principle of automatic votage regulator
what is the procedure to callibrate temp controller ,pressure controller,etc. suppose a temp controller showing error 1.5 degree centigrate how can i minimize it.
Capacitance, resistance ( colour coding ), parallel & series circuits.
what is controlling card in dcs? how u measure dcs memory?what is bus in dcs?how u know dcs speed n ehternet speed?
What is Span Error
What is the meaning of wet leg
What is furnace draft control?
What are the types of control valves available
can you send remote seal interface level transmitter calculation steps for oil water saperator.
what is the importance of CV in the control valves? how it is calculated?
please someone tell me what is function of vibration sencer and how many types and how to control viberation.please. my id is jimmykhan077@gmail.com
