Safety instructions 
  2.4 Use in hazardous areas 
SIWAREX WL200 
Operating Instructions, 07/2016, A5E02199611B-03 
11 
 
Unsuitable device for the hazardous area 
Danger of explosion. 
•  Only use equipment that is approved for use in the intended hazardous area and 
labelled accordingly. 
 
Loss of safety of device with type of protection "Intrinsic safety Ex i" 
If the device has already been operated in non-intrinsically safe circuits or the electrical 
specifications have not been observed, the safety of the device is no longer ensured for use 
in hazardous areas. There is a danger of explosion. 
•  Connect the device with type of protection "Intrinsic safety" solely to an intrinsically safe 
circuit. 
•  Observe the specifications for the electrical data on the certificate and/or in Technical 
data (Page 45). 
 
 
Damage to load cells, measurement errors 
Dirt must not be allowed to accumulate in the vicinity of a load cell. 
Do not subject cable glands and seals to the jet from a pressure washer.