تعريف نسبة العزل فى الأجهزة ولوحات التوزيع
Using Ingress Protection ( IP ) Ratings to help select proper equipment for your application.
For load cell sealing techniques, Rice Lake Weighing Systems uses the Ingress Protection ( IP ) rating system. We find the IP numbers and their definitions are suitable for the classification of load cells and only apply IP numbers to such cell The lP numbers on a load cells . further specify the treatment a specific cell can endure in environments more severe than simple wash down.
Example : Protection level offered
by an IP67 rated product
[IP 67]
Protection against solid objects
First number ( in this case 6 )
0 No protection
1 Protected from solid objects up to 50mm ( e.g., accidental touch by hands )
2 Protected from solid objects up to 12 mm ( e.g., fingers )
3 Protected from solid objects more than 25 mm ( e.g., tools and small wires )
4 Protected from solid objects more than 1 mm ( e.g., small wires )
5 Protected from dust; limited entrance ( no harmful deposit )
6 totally protected from dust
Protection against liquids
Second number ( in this case 7 )
0 No protection
1 Protected from vertically-falling drops of water ( e.g., condensation )
2 Protected from direct sprays of water up to 15° from vertical
3 Protected from direct sprays of water up to 60° from vertical
4 Protected from water sprayed from all directions ; limited entrance allowed
5 Protected from low pressure jets of water from all directions; limited entrance allowed
6 Protected from strong jets of water ( e.g., for use on ship decks ) ; limited entrance allowed
7 Protected from the effects of immersion between 15 cm and 1 m for 30 minutes
8 Protected from extended periods of immersion under pressure
IP Numbers with Hermetically Sealed ( HS ) or Environmentally Protected ( EP ) Ratings
Rating Protection
EP àDust proof , not protected from moisture or water
IP65 à Dust proof , protected from splashes and low-pressure jets
1P66 à Dust proof , protected from strong water jets
1P67 à Dust proof, protected from temporary immersion in water 1 meter deep for 30 minutesv
1P68 à Dust proof , protected from continuous immersion in water under more severe conditions than IP67
IP66 / 68 à Dust proof protected from strong water jets and / or constant immersion