HE 5411 Operating Instructions
#340411 | version 1.7
2.3 Safety in the individual operating phases
When installing the device and during operation, the following safety instructions must be
observed.
Danger of Electrocution!
Before working on the device, switch off all power supplies used. The
electrical cables must be laid according to the respective national
regulations (in Germany VDE 0100). The measuring lines must be laid
separately from the mains leads.
Attention!
The device must never be put into operation even if damage is
recognisable.
Warning!
Ensure protection against short circuiting in the supply circuit.
Attention!
During installation, commissioning, maintenance and troubleshooting,
observe the accident prevention regulations applicable to your system,
e.g. DGUV Regulation 3 "Electrical installations and equipment".
Attention!
Clean dirty contacts with oil-free compressed air or with spirit and a lint-
free cloth.
Warning of material damage caused by electrostatic charge!
Observe the safety measures according to BS EN 61340-51/-3 to avoid
electrostatic discharge!
Power Connection!
The electrical cables must be laid according to the respective national
regulations (in Germany VDE 0100). The measuring lines must be laid
separately from the mains leads.
Explosion Prevention!
HE 5411 Lite, Basic and Premium with a supply voltage of 19…36 V DC
are suitable for use in explosion zones 2 and 22, provided that the lid is
closed.
HE 5411 Lite, Basic and Premium with a supply voltage of 100…240 V
AC are only suitable for use in explosion zone 22, provided that the lid is
closed.
Devices with a measuring range of ± 1.25 mbar (regardless of the device
version) do not have an ATEX certification and must not be used in
potentially explosive areas.
Before opening the device, e.g. for parameter setting, it is essential to
ensure that no explosive environmental conditions, such as formation of
dust, exist.
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