DHW-UM-004
Val Controls A/S
•
Sallingsundvej 5
•
DK-6715 Esbjerg N
•
Tel. +45 7547 0600
•
www.valcontrols.com
Revision: 4
20/20
5.5
Internal watch and SD card
5.5.1
Electrical specifications
Internal Watch
Time deviation
Δf/fo =
+/- 20ppm
Aging
Δf/fo =
+/- 3ppm / Year
Temperature coefficient
β
= -0.034 +/- 0.006ppm/°C²
Battery life (Estimated)
10 year
Please contact Val Controls for a replacement battery.
The SD card is used to store signatures. Do not move the SD card between devices. Contact Val
Controls for a replacement SD card.
Disposal of this product and/or battery shall be in accordance with local environmental laws and
regulations.
