Force Transfer Standards
Metrology data
Figures in % of reading, in the range of 20% - 100% · Fnom
|
|
GTM Class VN **)
|
Class 00 *)
|
Class 0,5 *)
|
Class 1 *)
|
| Rel. zero return, full scale
|
ds, o
|
± %
|
0.008
|
0.010
|
0.020
|
0.035
|
| Rel. reproducibility in unchanged mounting position
|
brg
|
± %
|
0.002
|
0.023
|
0.045
|
0.08
|
| Rel. repeatability in changed mounting position
|
brv
|
± %
|
0.005
|
0.045
|
0.09
|
0.15
|
| Rel. interpolation error
|
fr
|
± %
|
0.002
|
0.02
|
0.04
|
0.08
|
| Rel. hysteresis
|
u
|
± %
|
0.06
|
0.06
|
0.14
|
0.25
|
| Temperature coefficient on zero
|
TK0
|
± % / K
|
0.001
|
0.001
|
0.002
|
0.0025
|
| Temperature coefficient on span
|
TKC
|
± % / K
|
0.001
|
0.001
|
0.002
|
0.003
|
Rel. creep error
0,5 - 15 min ≤ 100 kN
1 - 15 min ≥ 200 kN
|
drc
|
± %
|
0.008
|
0.01
|
0.02
|
0.025
|
| Reference temperature
|
Tref
|
° C
|
21
|
21
|
21
|
21
|
| Nominal temperature range
|
Bt, nom
|
° C
|
21 ± 5 K
|
10 ... 30
|
10 ... 30
|
10 ... 30
|
| Influence of 1 mm eccentricity
|
fm
|
± %
|
0.005
|
0.005
|
0.01
|
0.01
|
*) Definitions according to VDI/VDE 2638 respectively ISO 376
**) better than class 00 according to ISO 376
|
|
|
