JIS-Standard

Wieviel Wasser verträgt eine Kamera / ein Feldstecher

Die folgende Tabelle (im englischen Orginal) gibt Auskunft über die Bedeutung der verschiedenen JIS-Klassen bezüglich der Resistenz gegen Wasser. (JIS = Japanese Industrial Standard)

Quelle: IEC 529 Second edition 1989 - 11, Prepared by IEC Technical committee No. 70: Degrees of Protection by enclosures

Class-Level	Description	Definition	Pentax-Produkte
Grade 0	Non-protected
Grade 1	Protected against vertically falling water drops.	Vertically falling drops shall have no harmful effects.
Grade 2	Protected against vertically falling water drops when enclosure is tilted up to 15 degrees.	Vertically falling drops shall have no harmful effects when the enclosure is tilted at any angle up to 15 degrees on either side of the vertical.
Grade 3	Protected against spraying water.	Water sprayed at an angle up to 60 degrees on either side of vertical shall have no harmful effects.
Grade 4	Protected against splashing water.	Water splashed against the enclosure from any direction shall have no harmful effects.
Grade 5*	Protected against water jets.	Water projected in jets against the enclosure from any direction shall have no harmful effects.	Espio 95WR, Espio105WR
Grade 6**	Protected against powerful water jets.	Water projected in powerful jets against the enclosure from any direction shall have no harmful effects.	DCF WP
Grade 7***	Protected against the effects of temporary immersion in water.	Ingress of water in quantities causing harmful effects shall not be possible when the enclosure is temporarily immersed in water under standardised conditions of pressure and time.	Optio 43WR, Optio 33WR, PIF Series
Grade 8	Protected against the effects of continuous immersion in water.	Ingress of water in quantities causing harmful effects shall not be possible when the enclosure is continuously immersed in water under conditions which shall be agreed between manufacturer and user but which are more severe than for numeral 7.	Optio WP, WPi, W10, W20

*Test conditions for Grade 5:

The test is made by spraying the enclosure from all practicable directions with a stream of water from a standard test nozzle as shown in figure 6.

The conditions to be observed are as follows:

Internal diameter of the nozzle: 6.3mm.

Delivery rate: 12.5 l/min +/- 5 %

Water pressure: to be adjusted to achieve the specified delivery rate.

Core of the substantial stream: circle of approximately 40mm in diameter at 2.5m distance from the nozzle.

Test duration per square metre of enclosure surface area likely to be sprayed: 1 min.

Minimum test duration: 3 min.

Distance from nozzle to enclosure surface: between 2.5m and 3m.

 

Summary of test conditions for Grade 5:

Test means: Water jet hose nozzle Figure 6. Nozzle 6.3mm diameter, distance 2.5m to 3m.

Water flow rate: 12.5 litres per minute +/- 5%.

Duration of test: 1 min/m2 at least 3 min.

 

 

** Test conditions for Grade 6:

The test is made by spraying the enclosure from all practicable directions with a stream of water from a standard test nozzle as shown in figure 6.

The conditions to be observed are as follows:

Internal diameter of the nozzle: 12.5mm.

Delivery rate: 100 l/min +/- 5 %

Water pressure: to be adjusted to achieve the specified delivery rate.

Core of the substantial stream: circle of approximately 120mm in diameter at 2.5m distance from the nozzle.

Test duration per square metre of enclosure surface area likely to be sprayed: 1 min.

Minimum test duration: 3 min.

Distance from nozzle to enclosure surface: between 2.5m and 3m.

 

Summary of test conditions for Grade 6:

Test means: Water jet hose nozzle Figure 6. Nozzle 12.5mm diameter, distance 2.5m to 3m.

Water flow rate: 100 litres per minute +/- 5%.

Duration of test: 1 min/m2 at least 3 min.

 

 

*** Test conditions for Grade 7: temporary immersion between 0.15m and 1m

The test is made by completely immersing the enclosure in water in its service position as specified by the manufacturer so that the following conditions are satisfied:

a) the lowest point of enclosures with a height less than 850mm is located 1000mm below the surface of the water;

b) the highest point of enclosures with a height equal to or greater than 850mm is located 150mm below the surface of the water;

c) the duration of the test is 30min;

d) the water temperature does not differ from that of the equipment by more than 5 degrees Kelvin. However, a modified requirement may be specified in the relevant product standard if the tests are to be made when the equipment is energised and/or its parts in motion.

 

Summary of test conditions for Grade 7:

Test means: Immersion tank. Water level on enclosure: 0.15m above top, 1m above bottom.

Water flow rate: not applicable.

Duration of test: 30 minutes.