{
"metadata": {
"name": "",
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"worksheets": [
{
"cells": [
{
"cell_type": "markdown",
"metadata": {},
"source": [
"<h1>Chapter 1: Temperature<h1>"
]
},
{
"cell_type": "markdown",
"metadata": {},
"source": [
"<h3>Example 1.1, Page Number: 53<h3>"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"\n",
"\n",
"#variable declaration\n",
"c=-40.0 #Temp in degree Celcius\n",
"\n",
"#calculations\n",
"k=c+273\n",
"F=((9.0/5.0)*c)+32.0\n",
"R=((9.0/5.0)*c)+492.0\n",
"\n",
"#Result\n",
"print('\\nK=%d\u00b0K' %k)\n",
"print('\\nF=%d\u00b0F' %F)\n",
"print('\\nR=%d\u00b0R' %R)"
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"\n",
"K=233\u00b0K\n",
"\n",
"F=-40\u00b0F\n",
"\n",
"R=420\u00b0R"
]
}
],
"prompt_number": 1
},
{
"cell_type": "markdown",
"metadata": {},
"source": [
"<h3> Example 1.2, Page Number: 53<h3>"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"\n",
"\n",
"#varable Declaration\n",
"span=1000.0 #given value of span in \u00b0C\n",
"accuracy=1.0/100.0 #1% accuracy\n",
"\n",
"#calculations\n",
"err=span*accuracy\n",
"max_scale=1200.0\n",
"Range_instr=max_scale+span\n",
"meter_reading=700.0\n",
"per_of_err=(err/meter_reading)*100.0\n",
"\n",
"#result\n",
"print('(a)\\nAs error can be either positive or negative') \n",
"print('\\n the probable error at any point on the scale =\u00b1 %d\u00b0C'%err)\n",
"print('\\n(b)\\nRange of the Instrument = %d\u00b0C'%Range_instr)\n",
"print('\\n(c)\\nPercentage of Error = \u00b1 %.2f%% '%per_of_err)"
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"(a)\n",
"As error can be either positive or negative\n",
"\n",
" the probable error at any point on the scale =\u00b1 10\u00b0C\n",
"\n",
"(b)\n",
"Range of the Instrument = 2200\u00b0C\n",
"\n",
"(c)\n",
"Percentage of Error = \u00b1 1.43% "
]
}
],
"prompt_number": 10
},
{
"cell_type": "markdown",
"metadata": {},
"source": [
"<h3>Example 1.3, Page Number: 54<h3>"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"\n",
"\n",
"#variable declaration\n",
"resi_per_leg=5.0 # lead wire resistance per leg in Ohm\n",
"temp_coeff=0.385 # Temperature coefficient of Pt 100 RTD in ohms/\u00b0C\n",
"\n",
"#calculation\n",
"R_due_to_leadwires=2*resi_per_leg\n",
"err=R_due_to_leadwires/temp_coeff\n",
"err =round(err,0)\n",
"temp_obj=200.0\n",
"temp_measured=temp_obj+err\n",
"per_of_err=((temp_measured-temp_obj)/temp_obj)*100.0\n",
"\n",
"#Result\n",
"print('(a)\\nThe contribution of 10 ohms lead wire resistance')\n",
"print('to the measurement error = %d\u00b0C' %err)\n",
"print('\\n(b)\\nPercentage of Error = %d%%' %per_of_err)"
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"(a)\n",
"The contribution of 10 ohms lead wire resistance\n",
"to the measurement error = 26\u00b0C\n",
"\n",
"(b)\n",
"Percentage of Error = 13%"
]
}
],
"prompt_number": 3
},
{
"cell_type": "markdown",
"metadata": {},
"source": [
"<h3>Example 1.4, Page Number: 54<h3>"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"\n",
"\n",
"#variable declaration\n",
"temp=2.022 #Millivolt corresponds to reference junction temp 50\u00b0C\n",
"millivolt_cor=37.325 #Millivolt corresponds to reference junction temp 900\u00b0C\n",
"\n",
"#calculation\n",
"op=millivolt_cor-temp\n",
"\n",
"#result\n",
"print('Millivolt output available = % .3f' %op)"
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"Millivolt output available = 35.303"
]
}
],
"prompt_number": 4
},
{
"cell_type": "markdown",
"metadata": {},
"source": [
"<h3>Example 1.5, Page Number: 54<h3>"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"\n",
"\n",
"#variable declaration\n",
"millivolt_cor=2.585 #Millivolt corresponds to reference junction temp 50\u00b0C\n",
"pot_reading=30.511 #reading on pot\n",
"\n",
"#calculation\n",
"corrected_millivolt=pot_reading+millivolt_cor\n",
"\n",
"#result\n",
"print('Temperature correspond to %.3f mV from the table = 600\u00b0C' %corrected_millivolt)"
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"Temperature correspond to 33.096 mV from the table = 600\u00b0C"
]
}
],
"prompt_number": 5
},
{
"cell_type": "markdown",
"metadata": {},
"source": [
"<h3>Example 1.6, Page Number: 54<h3>"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"\n",
"\n",
"#variable Declarion\n",
"ref_jun=100.0 #reference junction temp.\n",
"mV_100=0.645 #voltage at 100\u00b0C\n",
"mV_1000=9.585 #voltage at 1000\u00b0C\n",
"mV_1200=11.947 #voltage at 1200\u00b0C\n",
"\n",
"#calculation\n",
"op1=mV_1000-mV_100\n",
"op2=mV_1200-mV_100\n",
"\n",
"#result\n",
"print('Millivolt to be fed checking 1000 C = %.3f mV'%op1)\n",
"print('\\nMillivolt to be fed checking 1200 C = %.3f mV'%op2)"
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"Millivolt to be fed checking 1000 C = 8.940 mV\n",
"\n",
"Millivolt to be fed checking 1200 C = 11.302 mV"
]
}
],
"prompt_number": 6
},
{
"cell_type": "markdown",
"metadata": {},
"source": [
"<h3>Example 1.7, page Number: 55<h3>"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"\n",
"#variable declaration\n",
"E_rec_pyro=0.95*0.85 #Energy received by pyrometer\n",
"\n",
"#calculation\n",
"T=1100.0/E_rec_pyro\n",
" \n",
"#result\n",
"print('Pyrometer reading T = %.2f\u00b0C'%T)"
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"Pyrometer reading T = 1362.23\u00b0C"
]
}
],
"prompt_number": 7
},
{
"cell_type": "markdown",
"metadata": {},
"source": [
"<h3>Example 1.8, Page Number: 55<h3>"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"\n",
"\n",
"#(a)\n",
"\n",
"#variable declaration\n",
"hot1_mV=41.29 # Millivolt corresponds to hot junction temp \n",
"cold1_mV=2.022 # Millivolt corresponds to cold junction temp \n",
"\n",
"#calculation\n",
"op1=hot1_mV-cold1_mV\n",
"\n",
"#(b)\n",
"\n",
"#variable declaration\n",
"hot2_mV=33.096 #Millivolt corresponds to hot junction temp \n",
"cold2_mV=2.585 #Millivolt corresponds to cold junction temp \n",
"#calculation\n",
"op2=hot2_mV-cold2_mV\n",
"\n",
"#(c)\n",
"\n",
"#variable declaration\n",
"hot3_mV=11.947 #Millivolt corresponds to hot junction temp \n",
"cold3_mV=0.299 #Millivolt corresponds to cold junction temp \n",
"#calculation\n",
"op3=hot3_mV-cold3_mV\n",
"\n",
"#result\n",
"print('(a)\\nOutput Millivolt = %.3f'%op1)\n",
"print('\\n(b)\\nOutput Millivolt = %.3f'%op2)\n",
"print('\\n(c)\\nAs the wrongly formed thermocouples at J1 and J2 will always oppose')\n",
"print('the main millivolt output, the net output will be lower than normal value.')\n",
"print('Output mV<%.3f'%op3)"
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"(a)\n",
"Output Millivolt = 39.268\n",
"\n",
"(b)\n",
"Output Millivolt = 30.511\n",
"\n",
"(c)\n",
"As the wrongly formed thermocouples at J1 and J2 will always oppose\n",
"the main millivolt output, the net output will be lower than normal value.\n",
"Output mV<11.648"
]
}
],
"prompt_number": 8
},
{
"cell_type": "markdown",
"metadata": {},
"source": [
"<h3>Example 1.9, Page Number: 56<h3>"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"\n",
"\n",
"#variable declaration\n",
"Rl_ind=250.0 #load resistor for indicator\n",
"Rl_rec=250.0 #load resistor for recorder\n",
"load_allowable=600.0 #allowable load with load independency\n",
"\n",
"#calculation\n",
"load_connected= Rl_ind+Rl_rec\n",
"max_load_controller=load_allowable-load_connected\n",
"op_cont=600.0\n",
"total=Rl_ind+Rl_rec+load_allowable\n",
"extra_load=total-op_cont\n",
"\n",
"#result\n",
"print('(a)\\nThe max load to the controller = %d ohms'%max_load_controller)\n",
"print('\\n(b)\\nExtra Load = %d ohms'%extra_load)\n",
"print('\\nAdditional Power Supply voltage required = 10 V')\n",
"print('\\nMinimum Power Supply Voltage = 34 ')"
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"(a)\n",
"The max load to the controller = 100 ohms\n",
"\n",
"(b)\n",
"Extra Load = 500 ohms\n",
"\n",
"Additional Power Supply voltage required = 10 V\n",
"\n",
"Minimum Power Supply Voltage = 34 "
]
}
],
"prompt_number": 9
}
],
"metadata": {}
}
]
}