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Difference between smart and hart transmitter?
They are the same thing. A smart transmitter can be Hart, Fieldbus and in the case of Foxboro instruments FoxCom.
Why you need 250 ohm resistor in hart?
The resistor doesn't have to be 250 Ohms, anything from 100-600 will work equally well. The power supply is a low impedance to the hart signal shorting it out. Adding the resistor raises the impedance so that the signal can be detected by the calibrator. A small reactor would also work.Ohms law states that a resistor must be present with current to receive a voltage (V=IR) this resistor converts current to voltage which is used as a digital voltage signal. (1-5 V).The HART protocol uses 1200 baud Frequency Shift Keying (FSK) based on the Bell 202 standard to superimpose digital information on the conventional four to 2OmA analogue signal.Hope this may help ful....Sudhan.Sshansudhan@rediffmail.com
What is the calibration of the pressure instrument?
A pressure gauge is attached to the proper fitting on a bench with valves and tubing. A known weight pressurizes a piston. That pressure goes to the gauge being calibrated and the N.B.S. certified gauge. The two are compared at several points called out in the test procedure. Adjustments are made to the mechanical linkage between the gauges internal tube and the indicator needle to make it read within an allowable percentage of deviance.
Give an example of a compiler?
A programming language can be made into a working program either by Interpretation or compilation. There isn't a Compiler and an Interpreter language. But any code any be made into a program by compiling it using an Interpreter (checks a line of your code at a time and stops at errors) or compiler (checks the entire code at a time and displays all errors at the end).As the Answer above states any language can be Interpreted (the program is executed one line at a time, and errors are reported when and if they occur) and any language can be compiled (the whole program is rendered as a single executable file, and run in one go).But some languages are usually interpreted (though they may sometimes be compiled) and some languages are usually compiled (though they may be sometimes interpreted).An interpreted language is more easily debugged (and errors will usually be less disastrous). A compiled language runs faster (and the executable file will be smaller and more portable).So interpreted languages tend to include languages used for teaching and also languages used for robotic control (when you drive robots you will often want them to do things one step at a time).BASIC is a teaching language, it is usually interpreted. FORTH (for radio telescopes) and LOGO (for floor crawlers) are other languages which are usually interpreted, since they are robotic.Languages which are used for commercial programming will nearly always be compiled. C, C++, C# are nearly always compiled, and so is Pascal and all its derivatives (Oberon, Delphi &c.).
How do you turn a unipolar stepper motor into a bipolar stepper motor?
It depends on how your motor is wired.5 wire , 6 wire or 8 wire (4 wire are nearly always bipolar already) 5 wire: For 5 wire motors you need to determine which wire is the common wire.To do that use an ohm meter to find the wire that has the lowest reading to all 4 of the other wires that is the common. You will not connect anything to this wire in bipolar mode however to figure out which wires must be paired we need to hook it up to the positive terminal of a power supply or battery. Hook up one of the other 4 wires to ground. Note how hard it is to turn the motor shaft. Leave this wire connected and hook another wire to ground. Check how hard it is to turn the motor shaft. Disconnect that wire and connect to the next wire. When one of the three other wires is connected the shaft will turn with almost no effort. That wire and the first wire connected to ground are Motor phase A The other two wires should be paired and would be phase B. A pair of vise locks on the shaft will make it easier to turn the motor shaft. A vise helps to hold the motor. It does not matter that the center of the coils are connected. That point will always be the same voltage for all power connections to the motor at about 1/2 voltage supply. The common wire should be left unconnected.6 wire: With the six wire version hook up the ohm meter to one wire probe the other five wires. three wires will be open they will be phase B. The other two will show a resistance one about twice that of the other or nearly the same value. If the values are the same the first wire you connected to was the center tap and is not used. The other two wires are phase A. If the values are different The low resistance is the center tap and is not used. The first wire you connected to and the high resistance wire is Phase A. Now connect the ohm meter to one of the wires that had an open circuit. Test the resistance to the other two wires and use the same logic to determine which wires are phase B.8 wire: First you need to sort the wires out to coil pairs. Use your ohm meter. Hook up to one wire and check the other 7. Only one wire should show as connected. That is the other wire for coil 1 pair. Do the same for the remaining wires until you have identified all 4 coil pairs. Now use a power supply and hook one wire from coil 1 to positive. Hook the other wire from coil 1 to negative. Note how hard it is to turn the shaft. Leave coil 1 connected. Hook one wire from coil 2 to positive the other to negative. Turn the shaft. Reverse the wires to coil 2. Turn the shaft. Try the other two wire pairs. One connection for one of the wire pairs will allow the shaft to turn with almost no effort. When that pair is reversed the effort to turn the motor will be very hard. That pair of coils will be phase A. Hook them up so it is very hart to turn the motor shaft. Mark the polarity for phase A coil wires. Disconnect phase A wires and connect the other coil wires up to the power supply. Turn the shaft. Is it easy or hard. If it is easy reverse one of the coils. It should now be hard to turn the motor shaft. Mark the polarity for phase B coil wires. The phase coils can be connected in parallel or series. Just make sure you maintain the connection polarity that gives the highest torque to turn the shaft.
City trend Jacksonville Florida?
yea theres one on the southside before you get on hart bridge and one right across the street from gateway mall
Who was the Governor of Florida in 1874?
Ossian B. Hart (born January 17, 1821 in Jacksonville, Florida; died March 18, 1874 in Jacksonville, Florida) succeeded Harrison Reed as the tenth Governor of Florida, serving between January 7, 1873 and March 18, 1874. Following the end of Hart's term as Governor, Marcellus Stearns (born April 29, 1839 in Lovell, Maine; died December 8, 1891 in Palatine Bridge, New York) became the eleventh Governor of Florida, serving between March 18, 1874 and January 2, 1877.
How many bridges are in Jacksonville Florida?
There are seven main bridges that span over the St. John's River. They are (starting from furthest upstream): Henry H. Buckman Bridge Fuller Warren Bridge St. Elmo W. Acosta Bridge John T. Alsop, Jr. Bridge (Main St.) Isaiah D. Hart Bridge John E. Mathews Bridge Napoleon Bonaparte Broward Bridge (Dames Point)
When was Hart Bridge created?
Hart Bridge was created in 1967.
Who was the Governor of Florida in 1873?
Harrison Reed (born August 26, 1813 in Littleton, Massachusetts; died May 25, 1899 in Jacksonville, florida) succeeded David S. Walker as the ninth Governor of Florida, between July 4, 1868 and January 7, 1873. Following the end of Reed's term as Governor, Ossian B. Hart (born January 17, 1821 in Jacksonville, Florida; died March 18, 1874 in Jacksonville, Florida) became the tenth Governor of Florida, serving between January 7, 1873 and March 18, 1874.
When was the Hart Bridge built?
1927
What has the author Valerie Hart written?
Valerie Hart has written: 'The Bounty Of Central Florida'
Where is Diana Hart these days?
Fighting with her brother Bre hart she is living in Tampa Florida but she and Bret doen't talk so how can they fight
Who was the Governor of Florida in 1875?
Marcellus Stearns (born April 29, 1839 in Lovell, Maine; died December 8, 1891 in Palatine Bridge, New York) succeeded Ossian B. Hart as the eleventh Governor of Florida, serving between March 18, 1874 and January 2, 1877, including the whole of 1875.
Which former presidential candidate was photographed on boat off Florida coast with a woman who was not his wife?
Gary Hart
What are the titles of the made for TV movies of hart to hart?
The orignal "Hart to Hart" television series ran from 1979 to 1984. "Hart to Hart Returns" (1993) "Hart to Hart: Home Is Where the Hart Is" (1994) "Hart to Hart: Crimes of the Hart" (1994) "Hart to Hart: Old Friends Never Die" (1994) "Hart to Hart: Secrets of the Hart" (1995) "Hart to Hart: Two Harts in 3/4 Time" (1995) "Hart to Hart: Harts in High Season" (1996) "Hart to Hart: Till Death Do Us Hart" (1996)
What is the duration of Hart to Hart?
The duration of Hart to Hart is 2820.0 seconds.
