Equipment Flashcards
Charles Law
Heat (Temp) goes up, Volume goes up.
Gay-Lussacs
Heat (temp) goes up, pressure goes up!
What is the only gas law not effected by temperature?
Boyle’s law
What is temperature measured in?
Kelvin equation is (K = Degree Celsius + 273)
How to convert F to C?
C = F -32/1.8
Solubility info for DES
BG: 0.42 MAC 6.3 Vapor Pressure 660
Solubility info for SEVO
BG: 0.60 MAC 1.8 Vapor Pressure 185
Solubility info for ISO
BG: 1.4 MAC: 1.1 Vapor Pressure: 250
Boyles Law
Pressure goes up, Volume goes down (inverse relationship) Think of bagging Susan boyle…
Oxygen cylinder info… What law?
Full cylinder = 660 L (volume) 2000 psi (pressure) Correlates linearly Boyles law
O2 cylinder should be changed when?
Nitrous oxide cylinder info What law?
95-90 % liquid Critical temp is 36.5 degrees c… Pressure in tank does not correlate until all liquid is consumed, same with boyles law. Full = 1590 L Pressure = 750psi When pressure drops below 745, change it out. Is almost out
What 5 places does oxygen flow to on machine?
Flush valve Oxygen supply fail safe alarm Fail-safe valve Flow meters Pneumatically powered devices (vent)
Nitrous only supply flow goes through what?
Fail-safe valve, cannot flow without assistance of o2 pressure.
Bourden gauge principle… Info on gauge itself…
Think of the party blow up kazoo thing… Higher pressure required to open the device the farther it goes. bends back and forth, can become fatigued over time and break. (Heavy metal case and plate glass help provide safety measures in the event of breakage)
Fail-safe valve What does do?
Is the o2 pressure cutoff valve. If psi drops below 25, it stops the flow of all gases. (Does NOT prevent delivery of hypoxic mixture technically)
Flow meters…
Tapered glass tubes that are larger at the top, this allows for constant pressure with variable flow.
High flow rates…. What kind of flow, and what is the major flow rate factor?
Turbulent flow (1-15 ml). Density is the major factor. Co2 and Nitrous have similar densities
Low flow rates… What type of flow? What is major flow factor?
Laminar flow (0-1 L) Viscosity is major factor (O2 and Helium have similar viscosities)
Oxygen flush valve rate(volume)? Psi (pressure)
40-60 psi 30-70 L/min (Bypasses on/off switch as well)
Common gas outlet size? Has a check valve that does what?
15mm. Prevents retrograde gas flow
Vaporizers… What system? What is the significance of this system?
Variable bypass system. This delivers a constant FRACTION … Allows change in flow rates without a change in concentration. See picture in cc