def __init__(self):
""" Get all needed values from the store"""
store = get_store()
# The length of the capillary (centimeter)
self.total_length = LengthUnits.convert_unit(float(store.get('Capillary')["value"]),
store.get('Capillary')["unit"],
u"cm")
# The window length (centimeter)
self.to_window_length = LengthUnits.convert_unit(float(store.get('Towindow')["value"]),
store.get('Towindow')["unit"],
u"cm")
# The capillary inside diameter (micrometer)
#PROBLEM WITH UNICODE NON ASCII
self.diameter = LengthUnits.convert_unit(float(store.get('Idiameter')["value"]),
store.get('Idiameter')["unit"],
u"µm")
# The pressure drop across the capillary (mbar)
self.pressure = PressureUnits.convert_unit(float(store.get('Pressure')["value"]),
store.get('Pressure')["unit"],
u"mbar")
# The time the pressure is applied (second)
self.duration = TimeUnits.convert_unit(float(store.get('Time')["value"]),
store.get('Time')["unit"],
u"s")
# The buffer viscosity (cp)
self.viscosity = float(store.get('Viscosity')["value"])
#molecular weight (g/mol)
self.molweight = float(store.get("Molweight")["value"])
# Analyte concentration (g/L)
if store.get('Concentration')["unit"] == u"mmol/L":
tmpconcetration = MolConcentrationUnits.convert_unit(float(store.get('Concentration')["value"]),
store.get('Concentration')["unit"],
u"mol/L")
self.concentration = self.molweight * tmpconcetration
else:
self.concentration = float(store.get('Concentration')["value"])
# The voltage applied to the capillary (volt)
self.voltage = VoltUnits.convert_unit(float(store.get('Voltage')["value"]),
store.get('Voltage')["unit"],
u"V")
# The current applied to the capillary (microampere)
self.electric_current = float(store.get('Electriccurrent')["value"])
# The detection time (s)
self.detection_time = TimeUnits.convert_unit(float(store.get('Detectiontime')["value"]),
store.get('Detectiontime')["unit"],
u"s")
# The electro-osmosis time (s)
self.electro_osmosis_time = TimeUnits.convert_unit(float(store.get('Electroosmosis')["value"]),
store.get('Electroosmosis')["unit"],
u"s")
def injection_pressure(self):
""" return the injection pressure /s : psi/s """
psi = PressureUnits.convert_unit(self.pressure, u"mbar", u"psi")
injection_pressure = psi/self.duration
return injection_pressure
def injection_pressure(self):
'''Return the injection pressure in psi per second
'''
inj_pressure = self.capillary.injection_pressure()
return inj_pressure * PressureUnits.convert_unit(1, u"mbar", u"psi")
def test_convert_bar_to_psi(self):
value = PressureUnits.convert_unit(0.1, 'bar', 'psi')
self.assertAlmostEqual(value, 1.45036839357, places=11)
def test_convert_mbar_to_bar(self):
value = PressureUnits.convert_unit(10, 'mbar', 'bar')
self.assertEqual(value, 0.01)
def test_convert_bar_to_pascal(self):
value = PressureUnits.convert_unit(0.1, 'bar', 'pa')
self.assertEqual(value, 10000)
def test_convert_pascal_to_pascal(self):
value = PressureUnits.convert_unit(10, 'pa', 'pa')
self.assertEqual(value, 10)