User Manual
iii 
The instrument is designed to be used in office-type indoor environments. Do not operate the 
instrument 
  In the presence of noxious, corrosive, or flammable fumes, gases, vapors, chemicals, or 
finely-divided particulates. 
  In relative humidity conditions outside the instrument's specifications. 
  In environments where there is a danger of any liquid being spilled on the instrument or 
where any liquid can condense on the instrument. 
  In air temperatures exceeding the specified operating temperatures. 
  In atmospheric pressures outside the specified altitude limits or where the surrounding gas 
is not air. 
  In environments with restricted cooling air flow, even if the air temperatures are within 
specifications. 
  In direct sunlight. 
This instrument is intended to be used in an indoor pollution degree 2 environment. The operating 
temperature range is 10 °C to 40 °C and the operating humidity is ≤ 85 % relative humidity at 40 °C, 
with  no  condensation  allowed.  Measurements  made  by  this  instrument  may  be  outside 
specifications if the instrument is used in non-office-type environments. Such environments may 
include  rapid  temperature  or  humidity  changes,  sunlight,  vibration  and/or  mechanical  shocks, 
acoustic noise, electrical noise, strong electric fields, or strong magnetic fields. 
Do not operate instrument if damaged 
If the instrument is damaged, appears to be damaged, or if any liquid, chemical, or other material 
gets on or inside the instrument, remove the instrument's power cord, remove the instrument 
from service, label it as not to be operated, and return the instrument to B&K Precision for repair. 
Notify B&K Precision of the nature of any contamination of the instrument. 
Clean the instrument only as instructed 










