Meaning of Symbols
ABSOLUTE Linear Encoder
This is an electronic measuring scale that provides a direct readout of ABSOLUTE linear position when switched on, without needing to be zeroed or reset. Mitutoyo measuring instruments incorporating these scales provide the significant benefit of being always ready for measurement without the need of preliminary setting after switching on. There are three types of ABSOLUTE linear encoders depending on whether the method used is electrostatic, electromagnetic, or optical. They are widely used in various measuring instruments as measuring systems endowed with enhanced reliability of measured values. Advantages: 1. No count error occurs even if you move the slider or spindle extremely rapidly. 2. You do not have to reset the system to zero when turning on the system after turning it off *1 . 3. As this type of encoder can drive with less power than the incremental encoder, the battery life is prolonged to about 5 years (continuous operation of 18,000 hours) *2 under normal use. *1 Unless the battery is removed. *2 In the case of ABSOLUTE Digimatic calipers and ABSOLUTE coolant proof calipers.
is a trademark of
Mitutoyo Corporation.
IP Codes
These are codes that indicate the degree of protection provided (by an enclosure) for the electrical function of a product against the ingress of foreign bodies, dust and water as defined in IEC standards (IEC 60529: 2013) and JIS C 0920: 2003. [IEC: International Electrotechnical Commission]
IP □□ □ (Supplementary letter) (IP: International Protection)
Degrees of protection against solid foreign objects Brief description Definition
Degrees of protection against water
Degrees of protection against oil Abstract
First characteristic numeral
Second characteristic numeral
Supplementary letter
Brief description Definition
0 1
Unprotected
—
Drops or splashes of oil from any direction cause no harmful effects. Protection against entry of oil droplets or splashes from all directions.
0 1
Unprotected —
A Sø50 mm object probe shall not fully penetrate enclosure* A Sø12.5 mm object probe shall not fully penetrate enclosure* A Sø2.5 mm object probe shall not fully penetrate enclosure* A Sø1.0 mm object probe shall not fully penetrate enclosure* Ingress of dust is not totally prevented, but dust that does penetrate must not interfere with satisfactory operation of the apparatus or impair safety.
Protected against solid foreign objects of Sø50 mm and greater Protected against solid foreign objects of Sø12.5 mm and greater Protected against solid foreign objects of Sø2.5 mm and greater Protected against solid foreign objects of Sø1.0 mm and greater
Vertically falling water drops shall have no harmful effects.
Protected against vertical water drops Protected against vertical water drops within a tilt angle of 15° Protected against spraying water Protected against splashing water Protected against water jets Protected against powerful water jets Protection against water penetration
Oil- resistant
F
Vertically falling water drops shall have no harmful effects when the enclosure is tilted at any angle up to 15° on either side of the vertical. Water sprayed at an angle up to 60° either side of the vertical shall have no harmful effects. Water splashed against the enclosure from any direction shall have no harmful effects. Water projected in jets against the enclosure from any direction shall have no harmful effects. Water projected in powerful jets against the enclosure from any direction shall have no harmful effects. Ingress of water in quantities causing harmful effects shall not be possible when the enclosure is temporarily immersed in water under standardized conditions of pressure and time. 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 IPX7.
2
2
Oil- proof
G
3
3
The protection levels against oil are specified only in the appendix of JIS C 0920.
4
4
5
6
is a trademark of Mitutoyo Corporation. The numerals and letters indicate protection levels.
5
Protected against dust
7
6 No ingress of dust allowed. * The full diameter of the object probe shall not pass through an opening of the enclosure. For details of the test conditions used in evaluating each degree of protection, please refer to IEC 60529 (JIS C 0920). Dust-proof
8
Protected against the effects of continuous immersion in water
viii
Powered by FlippingBook