| Standard Incremental Scales and
Masks |
|
 |
| Material: |
- selected floatglass, scribed and broken
- planarity 10 µm/100 x 100 mm
- coefficient of expansion 9 µm/°C/m
- glass thickness for scale 2,0 +0/-0,2 mm
- glass thickness for mask 1,0 ±0,1 mm´
- max. length of glass 3300 mm
|
| Graduation: |
- sputtered chrome
- transmission < 0,3% at 400 - 900 nm
- reflexion > 60% at 400 - 900 nm
- gratings 10 : 10 µm, 20 : 20 µm
- line width ratio 1 : 1
- max. line tolerance ±10%
- graduation accuracy < ±3 µm per 1000 mm
- parallelism graduation to glass edge < 0,3 mm per 1000 mm
- max. track length 3150 mm
|
| Acceptable defects in the graduation/reference mark
area: |
- pinholes < Ø250 µm or several smaller defects whose total area
does not exceed this
- dots < Ø180 µm or several smaller defects whose total area does
not exceed this
- defects visible to the naked eye on the illuminated table are not
critical
- max. 3 defects per 1000 mm
- minimum distance between two defects 40 mm
|
| Acceptable defects in the surrounding area: |
- dots < Ø0,3 mm
- max. 6 defects per 1000
mm
|
| On request: |
- other glass types
- other glass thicknesses
- other coatings
- sliding coat on mask
|
| |
|
| MSD 10 Incremental Scale for HEDS 9200
Module |
|
|
| Material: |
- selected floatglass, unpolished
- planarity 10 µm/100 x 100 mm
- coefficient of expansion 9 µm/°C/m
- width of glass 8 mm +0/-0,2 mm
- glass thickness 0,9 ±0,1 mm
|
| Graduation: |
- line width ratio 1 : 1
- max. line tolerance ±10%
- sputtered chrome
- transmission < 0,3% at 400 - 900 nm
- reflexion > 60% at 400 - 900 nm
|
| Grating: |
100 : 100 µm |
| Accuracy: |
5 or 10 µm/m |
| Standard measuring length: (mm) |
100, 180, 260, 340, 420, 500, 740, 980, 1160
other lengths on
request)
|
| Scale on profile: |
connection scale to aluminium profile with rubber cord |
| Power supply: |
+5 V ±5%, max. 100 mA |
| Output: |
square wave signals from built-in Subdiving Electronics times 1
|
| Connection possibilities: |
directly to suitable NC or DRO |
|
|
