Operating instructions

METTLER TOLEDO DE40/50/51 Density Meter 7
Safety measures
2. Safety measures
Measures for your safety
– Ensure that you plug the power cable supplied into a socket which is
grounded! In the absence of grounding, a technical fault could be lethal.
– Switch the instrument off and disconnect the power cable if you change
blown fuses! An electric shock could be lethal.
– Never work in a hazardous area! The housing of the instruments is not gas
tight (explosion hazard through spark formation, corrosion by gas diffusion
into the instruments).
– Measure readily inflammable, toxic and corrosive substances in a fume
hood and comply with the usual lab regulations!
Measures for operational safety
– Check the set operating voltage before you switch on the instrument! The
instrument will be damaged if the operating voltage does not match the line
voltage.
– Do not clean the measurement tube with concentrated sodium hydroxide
(caustic soda, NaOH) or hydrofluoric acid (HF)! Both substances chemi-
cally attack the measurement tube.
– Use only fuses of the specified type if you need to change them!
– Exclude the following environmental influences:
• powerful vibrations.
• direct sunlight.
• high atmospheric humidity.
• temperatures below 5 °C and above 35 °C.
• powerful electric or magnetic fields which influence the power supply
through large load fluctuations!