Metrohm 775 Dosimat - Manual (Page 14)

3.1. Technical specifications
775 Dosimat 10
3 Appendix
3.1 Technical specifications
Exchange units 1, 5, 10, 20, 50 mL burette cylinder volumes,
preferably with flat cock for automatic cock changeover
Resolution 10'000 pulses per 100% of burette volume
Exactitude Metrohm dosimats and exchange units meet the requirements
of ISO/EN/DIN Standard 8655-3 "Piston-operated volumetric
apparatus – Part 3: Piston burets" and DIN Standard 12 650.
Limits according to ISO/EN/DIN 8655-3
Cylinder
volume
Max. permissible system. error Max. permissible random error
1 mL ± 0.6% ± 6 µL ± 0.1% ± 1 µL
5 mL ± 0.3% ± 15 µL ± 0.1% ± 5 µL
10 mL ± 0.3% ± 20 µL ± 0.07% ± 7 µL
20 mL ± 0.2% ± 40 µL ± 0.07% ± 14 µL
50 mL ± 0.2% ± 100 µL ± 0.05% ± 25 µL
Metrohm agencies throughout the world offer you the possibil-
ity of checking the accuracy of your exchange units and Dosi-
mats locally and also of certifying them. If the dosing cylinder
and/or piston of an exchange unit are replaced then we rec-
ommend that an accuracy check is carried out.
Dispensing time for 100% of burette cylinder volume
20 s ... app. 17 min
Display LCD, 16 characters
Size of characters: 4.84 x 8.01 mm
Material
Cabinet Polybutylene terephthalate (PBTP)
Key cover Polycarbonate (PC)
Ambient temperature Nominal functional range +5... +40°C
Storage, transport - 40... +60°C
Safety specifications Designed and tested in accordance to IEC-Publication 1010,
safety class I. This manual contains some information and
warnings which have to be followed by the user to ensure safe
operation and to retain apparatus in safe condition.