株式会社 村上衡器製作所

OIML quality demands list

Limits of polarization

(based on OIML R111 / unit : µT)

 
class E1
class E2
class F1
class F2
class M1
class M2
Maximum polarization
2.5
8
25
80
250
800
Limits of magnetic susceptibility

(based on OIML R111)

Weight class
class E1
class E2
class F1
class F2
less than 1g
0.25
0.9
10
2g - 10g
0.06
0.18
0.7
4
more than 20g
0.02
0.07
0.2
0.8
Maximum and minimum limits for density

(based on OIML R111 / unit : 10³kg/m³)

Nominal value
class E1
class E2
class F1
class F2
class M1
class M2
≧100g
7.934~8.067
7.81~8.21
7.39~8.73
6.4~10.7
≧4.4
≧2.3
50g
7.92~8.08
7.74~8.28
7.27~8.89
6.0~12.0
≧4.0
20g
7.84~8.17
7.50~8.57
6.6~10.1
4.8~24.0
≧2.6
10g
7.74~8.28
7.27~8.89
6.0~12.0
≧4.0
≧2.0
5g
7.62~8.42
6.9~9.6
5.3~16.0
≧3.0
2g
7.27~8.89
6.0~12.0
≧4.0
≧2.0
1g
6.9~9.6
5.3~16.0
≧3.0
500mg
6.3~10.9
≧4.4
≧2.2
200mg
5.3~16.0
≧3.0
100mg
≧4.4
50mg
≧3.4
20mg
≧2.3
Maximum values of surface roughness

(based on OIML R111 / unit : μm)

 
class E1
class E2
class F1
class F2
Rz
0.5
1
2
5
Ra
0.1
0.2
0.4
1