Rinstrum - R300 Series Digital Indicator Operator Manual Rev 1.5 
Page 6 
2. Safety 
 
2.1. Operating Environment 
• Operating Temperature: –10 to 50°C 
• Humidity: <90% non-condensing 
• Operating Voltage: Shown on Rear Label 
 
2.2. Electrical Safety 
• For your protection all mains electrical hardware must be 
rated to the environmental conditions of use. 
• Pluggable equipment must be installed near an easily 
accessible power socket outlet.   
• To avoid the possibility of electric shock or damage to the 
instrument, always switch off or isolate the instrument from 
the power supply before maintenance is carried out. 
 
2.3. Cleaning 
• To maintain the instrument, never use harsh abrasive 
cleaners or solvents.  Wipe the instrument with a soft cloth 
slightly dampened with warm soapy water.