HygroCal100 User’s Manual
viii
97500 Issue 3, January 2018
Abbreviations
The following abbreviations may or may not be used in this manual:
AC alternating current
atm pressure unit (atmosphere)
bar pressure unit (=100 kP or 0.987 atm)
°C degrees Celsius
°F degrees Fahrenheit
COM common
dp dew point
EU European Union
HMI Human Machine Interface
Hz Hertz
IEC International Electrotechnical Commission
Nl/min normal liters per minute
lb pound
mA milliampere
mAh milliampere hour
max maximum
min minute(s)
mV millivolt(s)
N/C normally closed
N/O normally open
No number
PRT Platinum resistance thermometer (typically type Pt100)
psig pound(s) per square inch (gauge)
rh relative humidity
RTU Remote Terminal Unit
scfh standard cubic feet per hour
SD storage device card (memory card for storing datalog fi les)
sec second(s)
temp temperature
USB Universal Serial Bus
V Volts
Warnings
The following general warnings listed below are applicable to this instrument. They are
repeated in the text in the appropriate locations.
Where this hazard warning symbol appears in the following
sections, it is used to indicate areas where potentially hazardous
operations need to be carried out.
Where this symbol appears in the following sections it is used to
indicate areas of potential risk of electric shock.