GC 4800 Desiccant Holder
Installation and Maintenance Manual
PD-0100-0063 Rev A
CONFIDENTIAL – Do not copy
Page 3 of 11
Key definitions, acronyms, and abbreviations that may be used in this
document
µS/cm
– MicroSiemen per centimeter, a measure of water conductivity
Bar
– 14.5 PSI or 100 KPa (KiloPascals or Newton/cm), a unit of system pressure. All pressures are at gauge
pressure unless otherwise specified.
cc
– Cubic centimeter
CPI
– Chemical Process Instrumentation
FPT
– Female Pipe Thread
FuelGen®
- Registered TM of Proton Energy Systems, Inc. for hydrogen systems, comprised of a hydrogen
generator, hydrogen storage container, hydrogen dispensers and parts and accessories
HCS
– H Series Control System
HGMS
– Hydrogen Gas Management Subsystem
HOGEN®
- Registered TM of Proton Energy Systems Inc. for packaged water electrolysis based hydrogen
generators
kVA
– Kilovolt -ampere
kW
– Kilowatt
L/m
– Liters per minute flow (for hydrogen, calculated at a standardized temperature & pressure)
LAN
– Local Area Network
LFL –
Lower Flammability Limit
NEC
– National Electric Code, NFPA 70
NFPA
– National Fire Protection Association, a Standards Organization
Nm
3
/h
– Normal cubic meter per hour (International Normal conditions are 1.01325 bar and 0 Celsius)
NPT
– National Pipe Thread
NRTL –
Nationally Recognized Testing Laboratory
P&ID –
Piping and Instrumentation Diagram (Fluid Schematic)
PEM -
Proton Exchange Membrane
PPE –
Personal Protective Equipment
PPM –
Parts per Million
PSI
– Pounds force per square inch (lb
f
/in
2
=6894.7 Pa)
,
a unit of pressure. All pressures are at gauge pressure
unless otherwise specified.
SCFH
– Standard cubic foot per hour (US Standard conditions for air are 1 atmosphere and 70°F)
Standard atmosphere
= 1.01325 bara = 14.696 psia
TCU
– Thermal Control Unit
TVSS –
Transient Voltage Surge Suppressor
VAC
– Volts Alternating Current
VDC
– Volts Direct Current
WOMS
– Water/Oxygen Management Subsystem
- Notes contain helpful suggestions or references.
- Indicates a potentially hazardous situation, which, if not avoided, may result in minor or moderate
injury. It may also be used to alert against unsafe practices. This could result in equipment damage or
loss of data.
- Indicates a potentially hazardous situation, which, if not avoided, could result in death or serious injury.
The reader is in a situation that could cause bodily injury.
