GB/T 3720-1988 Basic parameters of optical length measuring instruments

GB/T 3720-1988 Basic parameters of optical length measuring instruments GB/T3720-1988 standard download decompression password: www.bzxz.net

LC531.J15
National Standard of the People's Republic of China
GH3720—88
Optical length measuring instruments
Basic parameters
Optical length.measuring instrunments-Basicparameters
1935-01-08 Issued
National Standard
Implementation on 1989-01-01
National Standard of the People's Republic of China
Optical length measuring instruments
Basic parameters
Optical length measuring instrumentsBasicparameters
Implementation standard is suitable for optical meters for unidirectional length measurement. The basic parameters of the optical length instrument shall comply with the following table: Instrument name
Vertical contact type
Next section
Detailed history of the instrument
Vertical optical type
Vertical front length
Divided into two types:
~, :
External specification, =0,02
Specification: 0.002
Reading type of the potentiometer
Optical reading
Digital display
For heat use, 120
minutes
minutes operation
Test type of the instrument
Optical consistency
Test diagram:
Comparison test verification:
minutes will match
minutes rate
National Machinery Industry Commission 1987-12-28 approved the instrument's indication reading base limit
or the instrument's accuracy) E
-10.23 +1.5m
± +C.05 +
60：20
Exceeding ±50um also uses:=0.25
Accuracy of the receiver
LDC 531.T15
GB3720—88
G372083
·The inspection points on the bottle will be divided into the following clauses:
, and the detection points will be divided into the following clauses:
, and the detection points will be divided into the following clauses:
, and the detection points will be divided into the following clauses:
, and the detection points will be divided into the following clauses:
, and the detection points will be divided into the following clauses:
, and the detection points will be divided into the following clauses:
, and the detection points will be divided into the following clauses:
, and the detection points will be divided into the following clauses:
, and the detection points will be divided into the following clauses:
, and the detection points will be divided into the following clauses:
, and the detection points will be divided into the following clauses:
, and the detection points will be divided into the following clauses: tt||1989-01-01 implementation
instrument old name
universal reader
Lanmi to length machine
large to length measuring machine
receiver reading type
optical family digital love product display
measurement plate range:
direct residual, ~[00
outside: 050
use large and small pairs. Case concubine
from 1-50 attachment: 10-20:
measurement installation:
- 201
Division of the Institute
Division of energy
crown, -[C00
division,
division of hydrogen:
to range: 0-6000
minutes,
GB372088
the quality of the instrument has no wind
(or received) m
diagnosis loss direct measurement of the accuracy of supervision,
outer dimensions:
inner dimensions:
several meters, according to the continental electrical area:
within the range of ±601m: =0.29:
More than ±304m micrograph: ±0.2
b, to the area
±(9.61200
, decimeter measurement area,
, if there is no explanation, it is a warning point. Additional remarks:
This standard is from the Institute of Photoelectricity and Electronics, the main drafter is Zhou Shao'an.
Measurement craftsman, mm
"For non-first-class length
machines. The accuracy ofbZxz.net
within the range of 0cm is:
1.—length, m
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