Glossary of SMC Pneumatic Catalogue
Pressure Terminology section : Pneumatic equipment
1. Maximum operating pressure differential
The maximum pressure differential (the biggest difference between the inlet and outlet pressure) which is made allowance for operation, with the valve open or closed. When the outlet pressure is 0 MPa, this becomes the maximum operating pressure.
2. Minimum operating pressure differential
The minimum pressure variation (the difference between the inlet pressure and outlet pressure) compulsory to keep the main valve stable operated.
3. Maximum system pressure
The maximum pressure that could be applied in the pipelines. (Line pressure) [The pressure gradient of the solenoid valve portion must be less than the maximum operating pressure differential.]
4. Explanation pressure
The pressure in which the valve must be withstood without a drop in performance after holding for 1 minute under prescribed pressure (static pressure) and returning to the operating pressure range. [Value under the prescribed conditions]
Electric Language
1. Clear power (VA)
Volt-ampere is the product of voltage (V) and current (A) .Power consumption (W) : For AC, W = V A cos. For DC, W = VA.Note) cos shows power factor. Cos = 0.6
2. Surge voltage
A high voltage which is temporarily generated by shutting off the power in the shut-off area.
3. Enclosure
A degree of protection defined in the “JIS C 0920: Water-resistant test of electric machinery/appliance and the degree of protection against the intrusion of solid foreign objects”.
Determine the degree of protection for each product.
Others
1. Material
NBR: Nitrile rubber
FKM: Fluoro rubber “Product name: Viton, Dai-el, etc.
EPDM: Ethylene propylene rubber
2. Oil-free treatment
The degreasing and washing of wetted parts.
3. Passage symbol
In the JIS symbol Out and In are in a blocked condition, but actually in the case of reverse pressure (OUTgt;IN), there’s a limit to the blocking. is used to imply that blocking of reverse pressure isn’t possible
Since the product stated here is employed under diverse operating conditions, its compatibility with specific hardware must be decided by the person who designs the kit or decides its directions based on obligatory research and test results. The expected performance and safety assurance of the clobber will be the responsibility of the individual that
has determined its compatibility with the product. This person should also continuously review all specifications of the product making reference to its latest catalog information, with a view to giving due consideration to any likelihood of kit failure when configuring the gear.
The use of SMC catalog products with production clobber for the manufacture of weapons of mass annihilation or any other weapon is exactly proscribed. Pneumatic Dotcom
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