Hypertherm EcoSift, Operator'S Manual

Page: 30 / 188

Terminology
Te
rmin
ology
30 EcoSift Operator Manual 809500
pipe
A rigid, hollow cylinder that carries fluids or gases; pipe is sized by wall thickness (gauge) and a standardized
outside diameter identified as nominal diameter (
DN
) or nominal bore (
NB
) in millimeters or nominal pipe size
(
NPS
) in inches.
pollution degree
A safety classification that describes the environment in which a piece of electrical equipment operates.
Underwriters Laboratories (
UL
) and the International Electrotechnical Commission (
IEC
) define pollution
degree 3 as an environment with conductive pollution or dry nonconductive pollution that becomes
conductive due to condensation. A pollution degree 4 environment has pollution that generates persistent
conductivity due to dust or wet conditions. Refer to
Electric power
on page 133.
psi
Pound-force per square inch (psi) is a unit of pressure: 1 psi equals 0.07 bar or 6.89 kPa or 6,895 N/m 2
relative humidity (ambient humidity)
Dependent on temperature, this is the percentage of moisture in the air relative to the moisture that is present
when the air is saturated, which is when water condensation occurs. Refer to
Environmental ratings
on
page 134.
RTV
Room-temperature vulcanization; silicone rubber is mixed with a curing agent to form a compound that is
temperature- and thermal-resistant
SAE
SAE (Society of Automotive Engineers) International, a professional association that coordinates the
development of technical standards based on best practices in the aerospace, commercial vehicle, and
automotive engineering.
SAE Code 61 fittings are designed for 206.8-bar or 20,684-kPa or 3,000-psi applications.
SAE Code 62 fittings are designed for 413.7-bar or 41,369-kPa or 6,000-psi applications.
SCFM
Standard cubic feet per minute, the flow rate of a gas at a certain volume and temperature
SLPM
Standard liters per minute, a US measurement of the flow rate of a gas at a certain volume and temperature;
refer to
NLPM
system integrator
An integrator of waterjet cutting systems that are sold directly to end users
tube
A rigid, hollow cylinder that carries fluids; tube (or tubing) is sized by its outer diameter (
OD
) and wall
thickness (gauge)
uncontrolled shutdown
The system turns off without completing an established sequence of actions; this can occur when power is
lost or when the
e
mergency stop knob is pushed. Refer to
normal shutdown
.
union
A 3-part fitting that is similar to a coupling, designed to join 2 pipes or tubes for easy assembly and
disassembly