YSI 6 series User Manual page 137

650 MDS
Barometer Vent
Patch
Battery Lid
Note that the back of the case contains the battery lid that is attached to the main case with four captive
screws and has three fittings for attachment of the ultraclamp and tripod accessories. In addition, the
battery lid has a hole that is covered with water-impermeable patch for venting of the optional barometer.
CAUTION: The barometer-venting patch is resident on the inside of the battery lid. Removal of or
damage to this patch will result in water leakage into the battery compartment.
The short cord with loop (lanyard) which is attached to the bottom of the case is attached to the strain relief
of the sonde cable. Simply open the D-ring, pass the lanyard loop through the opening, and then close the
D-ring.
3.2.5 BATTERIES AND CHARGING
The YSI 650 can be powered either with 4 alkaline C cells or a rechargeable NiMH battery pack. With the
C-cell configuration, the user will be able to power a typical YSI 6-series sonde (active dissolved oxygen
and one optical sensor) for approximately 45 hours of continuous operation. The rechargeable battery pack
will allow for about 15 hours of continuous use under these conditions. If the sonde is being powered by its
own internal batteries, the 650 batteries will last much longer. YSI Sondes with internal battery capability
are the 6920, 6600, 600XLM, and 600 OMS.
This instrument is powered by alkaline or optional nickel-metal hydride batteries, which the user must
remove and dispose of when the batteries no longer power the instrument. Disposal requirements vary by
country and region, and users are expected to understand and follow the battery disposal requirements for
their specific locale.
YSI Environmental Monitoring Systems Operations Manual
650 Back View
Section 3
Accessory Connections
Battery Lid Screws
3-7