From db0855dbeb41ecb8a51dde8587d43e5d7e83620f Mon Sep 17 00:00:00 2001 From: Thomas Stephen Lee Date: Fri, 28 Aug 2015 16:53:23 +0530 Subject: add books --- .../Chapter12.ipynb | 301 +++++++++++++++++++++ 1 file changed, 301 insertions(+) create mode 100644 Electronic_Instrumentation_and_Measurements_by_David_A._Bell/Chapter12.ipynb (limited to 'Electronic_Instrumentation_and_Measurements_by_David_A._Bell/Chapter12.ipynb') diff --git a/Electronic_Instrumentation_and_Measurements_by_David_A._Bell/Chapter12.ipynb b/Electronic_Instrumentation_and_Measurements_by_David_A._Bell/Chapter12.ipynb new file mode 100644 index 00000000..6d83b13e --- /dev/null +++ b/Electronic_Instrumentation_and_Measurements_by_David_A._Bell/Chapter12.ipynb @@ -0,0 +1,301 @@ +{ + "cells": [ + { + "cell_type": "markdown", + "metadata": {}, + "source": [ + "# CHAPTER 12: INSTRUMENT CALIBRATION" + ] + }, + { + "cell_type": "markdown", + "metadata": {}, + "source": [ + "## Example 12-1, Page Number: 355" + ] + }, + { + "cell_type": "code", + "execution_count": 8, + "metadata": { + "collapsed": false + }, + "outputs": [ + { + "name": "stdout", + "output_type": "stream", + "text": [ + "When scale reading is 10 V and precise voltage is 9.5 V,\n", + "Error=- -5.0 % of reading= -0.5 % of full scale\n", + "\n", + "When scale reading is 50 V and precise voltage is 51.7 V,\n", + "Error= + 3.4 % of reading= + 1.7 % of full scale\n" + ] + } + ], + "source": [ + "import math\n", + "\n", + "#Variable Declaration\n", + "\n", + "#For Scale reading =10 V, and precise voltage=9.5 V\n", + "scale_reading=10 #Scale reading is 10 V\n", + "\n", + "precise_reading=9.5 #Precise voltage is 9.5 V\n", + "\n", + "error=(precise_reading-scale_reading)/scale_reading*100 #Error in percentage form w.r.t reading\n", + "\n", + "error_fullscale=(precise_reading-scale_reading)*100/100 #Error with respect to full scale \n", + "\n", + "\n", + "print \"When scale reading is 10 V and precise voltage is 9.5 V,\"\n", + "print \"Error=-\",round(error,1),\"% of reading=\",error_fullscale, \"% of full scale\"\n", + "\n", + "print \n", + "#For Scale reading =50 V, and precise voltage=51.7 V\n", + "scale_reading=50 #Scale reading is 50 V\n", + "precise_reading=51.7 #Precise voltage is 51.7 V\n", + "error=(precise_reading-scale_reading)/scale_reading*100 #Error in percentage form \n", + "error_fullscale=(precise_reading-scale_reading)*100/100\n", + "\n", + "print \"When scale reading is 50 V and precise voltage is 51.7 V,\"\n", + "print \"Error= +\",round(error,1),\"% of reading= +\",error_fullscale, \"% of full scale\"" + ] + }, + { + "cell_type": "markdown", + "metadata": {}, + "source": [ + "## Example 12-2, Page Number: 357" + ] + }, + { + "cell_type": "code", + "execution_count": 9, + "metadata": { + "collapsed": false + }, + "outputs": [ + { + "name": "stdout", + "output_type": "stream", + "text": [ + "Correction figure= -6 W\n", + "Error= -5 %\n" + ] + } + ], + "source": [ + "import math\n", + "\n", + "#Variable Declaration\n", + "\n", + "V=114 #Measured Voltage in V\n", + "I=1 #Measured Current in A\n", + "W=120 #Full Scale wattage in W\n", + "\n", + "P=V*I #Wattmeter Power\n", + "error=P-W #Correction figure\n", + "print \"Correction figure=\",error,\"W\"\n", + "\n", + "error=error*100/W #Error %\n", + "\n", + "print \"Error=\",error,\"%\"" + ] + }, + { + "cell_type": "markdown", + "metadata": {}, + "source": [ + "## Example 12-3, Page Number 361" + ] + }, + { + "cell_type": "code", + "execution_count": 36, + "metadata": { + "collapsed": false + }, + "outputs": [ + { + "name": "stdout", + "output_type": "stream", + "text": [ + "Therefore Vo= 5 V ± 700.0 micro volt\n" + ] + } + ], + "source": [ + "import math\n", + "\n", + "#Variable Declaration\n", + "\n", + "R4=1125.0\n", + "R5=4017.9\n", + "Vz=6.4\n", + "accuracy=100.0/10**6 #100ppm\n", + "\n", + "#Calculation\n", + "#Maximum and Minimum values of resistances in ohm\n", + "R4max=R4*(1+accuracy) \n", + "R4min=R4*(1-accuracy)\n", + "R5max=R5*(1+accuracy)\n", + "R5min=R5*(1-accuracy)\n", + "\n", + "#Maximum and minimum zener voltages in V\n", + "Vzmax=Vz+Vz*0.01/100 #Maximum voltage is Vz+0.01% of Vz\n", + "Vzmin=Vz-Vz*0.01/100 #Minimum voltage is Vz-0.01% of Vz\n", + "\n", + "#Maximum and minimum output voltages in V\n", + "Vomax=Vzmax*(R5max/(R4min+R5max)) #Output is maximum when Vz is maximum, R5 is minimum and R4 is maximum\n", + "Vomin=Vzmin*(R5min/(R4max+R5min)) #Output is minimum when Vzi mimimum, R5 is maximum and R4 is minimum\n", + "Vo=Vz*(R5/(R4+R5))\n", + "\n", + "error=round(Vomax-Vo,4) #Deviation of output voltage from theoretical value \n", + "\n", + "#Result\n", + "print \"Therefore Vo=\",int(Vo),\"V ±\",error*10**6,\"micro volt\"\n" + ] + }, + { + "cell_type": "markdown", + "metadata": { + "collapsed": true + }, + "source": [ + "## Example 12-4, Page Number: 364" + ] + }, + { + "cell_type": "code", + "execution_count": 5, + "metadata": { + "collapsed": false + }, + "outputs": [ + { + "name": "stdout", + "output_type": "stream", + "text": [ + "When the potentiometer is calibrated, I= 20.0 mA\n", + "R1= 50.0 ohm\n", + "\n", + "Vx= 1.886 V\n", + "\n", + "The value of R2 to limit standard cell current to 20 micro ampere is 200 kilo ohm\n" + ] + } + ], + "source": [ + "import math\n", + "\n", + "#Variable Declaration\n", + "\n", + "Rab=100 #Resistance of wire AB, in ohm\n", + "Vb1=3 #Battery B1, terminal voltage(V)\n", + "Vb2=1.0190 #Standard Cell Voltage(V) \n", + "l=50.95 #Length BC, in cm\n", + "\n", + "#At Calibration\n", + "\n", + "Vbc=Vb2 \n", + "volt_per_unit_length=Vbc/l #in V/cm\n", + "Vab=100*volt_per_unit_length #in V \n", + "I=Vab/Rab #Ohm's Law\n", + "Vr1=Vb1-Vab #KVL \n", + "R1=Vr1/I \n", + "\n", + "#At 94.3cm\n", + "Vx=94.3*volt_per_unit_length\n", + "\n", + "#Worst case: Terminal voltage of B2 or B1 may be reversed\n", + "#Total voltage producing current flow through standard cell is\n", + "\n", + "Vt=Vb2+Vb1\n", + "R2=Vt/(20*10**-6) #Value of resistance R2 to limit standard cell current to a maximum of 20 micro ampere\n", + "\n", + "\n", + "print \"When the potentiometer is calibrated, I=\",I*10**3,\"mA\"\n", + "print \"R1=\",R1,\"ohm\"\n", + "\n", + "print \n", + "print \"Vx=\",round(Vx,3),\"V\"\n", + "print \n", + "print \"The value of R2 to limit standard cell current to 20 micro ampere is \",int(R2*10**-3),\"kilo ohm\"" + ] + }, + { + "cell_type": "markdown", + "metadata": { + "collapsed": true + }, + "source": [ + "## Example 12-5, Page Number: 367" + ] + }, + { + "cell_type": "code", + "execution_count": 15, + "metadata": { + "collapsed": false + }, + "outputs": [ + { + "name": "stdout", + "output_type": "stream", + "text": [ + "The instrument can measure a maximum of 1.6 V\n", + "Instrument resolution=± 0.2 mV\n" + ] + } + ], + "source": [ + "import math\n", + "\n", + "R3=509.5 #in ohm\n", + "R4=290.5 #in ohm\n", + "R13=100 #in ohm\n", + "l=100 #in cm\n", + "Vb2=1.0190 #in V(Standard Cell Voltage)\n", + "\n", + "Vr3=Vb2 \n", + "I1=Vb2/R3 #Ohm's Law \n", + " \n", + "#Maximum measurable voltage:\n", + "Vae=I1*(R3+R4) #Maximum measurable voltage in V\n", + "\n", + "#Resolution\n", + "I2=Vae/(8*R13) #in A \n", + "\n", + "Vab=I2*R13\n", + "slidewire_vper_length=Vab/l #in V/mm\n", + "\n", + "instrument_resolution=slidewire_vper_length*1 #As contact can be read within 1 mm, 1 is multiplied\n", + "\n", + "print \"The instrument can measure a maximum of\",Vae,\"V\"\n", + "print \"Instrument resolution=±\",instrument_resolution*10**2,\"mV\"" + ] + } + ], + "metadata": { + "kernelspec": { + "display_name": "Python 2", + "language": "python", + "name": "python2" + }, + "language_info": { + "codemirror_mode": { + "name": "ipython", + "version": 2 + }, + "file_extension": ".py", + "mimetype": "text/x-python", + "name": "python", + "nbconvert_exporter": "python", + "pygments_lexer": "ipython2", + "version": "2.7.9" + } + }, + "nbformat": 4, + "nbformat_minor": 0 +} -- cgit