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They are the same thing. A smart transmitter can be Hart, Fieldbus and in the case of Foxboro instruments FoxCom.
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Is the Hart bridge in Jacksonville Florida a suspension bridge?
no the bridge is not a suspension it's a cantilever bridge It's named after it's founder Isaiah Hart.
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.
What is the difference between hart and hind?
A hart is a male red deer. A hind is a female red deer.
What is Your ChoiceRosemount 3051S vs 3051C Transmitter –?
Advanced Capabilities: The 3051C pressure transmitters are equipped with advanced HART capabilities. They can be availed with HART 5 & HART 7 capabilities. HART 7 is an advanced protocol mainly designed for wireless systems, and is also suited for wired systems. These advanced HART protocols make the transmitters responsive to current and future capabilities.
What rhymes with hart?
Heart, start, cart, dart, mart, part, smart, tart.Dart, Smart, Fart, Cart, Part, Tart, and Wart.
What are the release dates for Hart to Hart - 1979 Murder Between Friends 1-6?
Hart to Hart - 1979 Murder Between Friends 1-6 was released on: USA: 30 October 1979
What is the source of the split between brothers wilbert hart and William hart?
greed
what is a smart transmitter?
The consequences of living in a postmodern era filter down even to field instrumentation... "Smart" is a marketing term, not a technical definition. Hence, smart means whatever the speaker attempts to define it as, but you as the listener, are not obliged to accept the speaker's definition. Over the past 20 odd years, I have had people tell me smart is: 1) the ability to have the transmitter's output ranged without applying an input 2) the ability to zero/range the transmitter output by applying a process input and pressing a button 3) the ability to configure an elevation offset on a GP/DP transmitter without applying a pressure. 4) the presence of a digital indicating readout on a transmitter, as opposed to an analog indicator. 5) the compensation for temperature drift on pressure transmitters by measuring the temperature and making compensation for it. 6) the ability to change engineering units for the digital indicator. 7) the presence of any digital interface, whether it be HART, foundation fieldbus, Profibus, or even Modbus. 8) the ability to get more than one variable from a transmitter. 9) the presence of 'meaningful diagnostics'. The repeated assertion of the value of 'meaningful diagnostics'. The failure to show a 'meaningful diagnostic' or be able to explain what any specific 'meaningful diagnostic' might be meaningful. 10) The ability to configure a transmitter remotely from the control room, over the wiring to the transmitter, with a handheld gizmo. 11) That newer transmitters are, in fact, smarter than older transmitters because the handheld gizmo has 2 LCD lines in the display, instead of one. 12) The absence of screw adjustment pots 13) Not drawing to an inside straight. I believe only the last definition. You are entitled to believe whatever you heart desires. Even a former US president didn't know the definition of 'is', so who's to define "smart"?
Why 250 ohm resistance using for transmitter calibration?
In this situation, to calibrate a transmitter you need a power circuit and communicator circuit. The Hart communicator used in the calibration process is connected to the power source circuit in parallel. The power source circuit is the one that has ammeter, 250 Ohm resistor, and power source all connected in series. As the transmitter sends output mA, it creates volt drop across the 250 Ohm resister. Let's say the volt drop across the resistor was 1 Volt. Now, back to the Hart communicator. It is a load, meaning there will be a volt drop across the Hart communicator. Since it is in parallel with the power circuit, it is also parallel with the resistor. So, the 1 volt drop across the 250 Ohm resistor will also make 1 volt drop across the Hart communicator. Technically speaking, the 1 volt drop across the Hart communicator is only true if its resistor is also 250 Ohm. However, it does NOT matter what voltage drop is in the Hart communcator. It only sees the "relative" voltage drop changes to measure the changes in transmitter outputs.
What is the difference between svr 2011 and svr 2011 limited edition?
svr 2011 is normal svr 2011 limited edition has the downloadable code for bret hart
What is the different between a hare and hart?
alot
What is the abbrevation of HART?
Collected from Googling... Highway Addressable Remote Transducer Highway Addressable Remote Transmitter Hornet Autonomous Real Time Horrible Artistic Ridiculous Teen Cheers, PretoriaZ,.
Did Bret hart break his leg?
No, it is setting up the match between McMahon and Hart.
What was the effect of the Montreal screwjob?
The Montreal screwjob caused a real life/off camera grudge between Shawn Micheals ,Bret Hart, and MR. McMahon . This argument was settled between Micheals and Hart,but McMahon refused Hart's attempt to bury the hatchet.
