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