LaMotte WaterLink 3585, Manual

Page: 9 / 64

9
DISK HANDLING
The disk should be handled only by the edges. Avoid touching the
top or bottom of the disk. The light passes through the non-frosted
areas of the disk so these areas must be kept free of smudges and
fingerprints. Wet disks should never be placed in the meter. Wet
disks should be dried with a lint free cloth before placing them into
the chamber.
The disk is positioned in the chamber by aligning the D-shaped hole in the center of the
disk over the D-shaped hub in the photometer chamber. The disk should be placed gently
on the hub. There is no need to firmly press the disk down onto the hub.
DISK STORAGE
Disks are sensitive to moisture. Avoid opening more packs
than are needed. Disks have a limited shelf life and should not
be exposed to the humidity in the air more than necessary.
Store disks at 70-80 °F/21-27 °C. Do not transport the
meter with a disk in the chamber.
DISK COVER
The black disk cover is placed over the disk in the photometer
chamber to reduce interference from stray light. The disk cover
is positioned over the disk by aligning the D-shaped hole in the
center of the disk over the D-shaped hub in the photometer
chamber. The disk cover should be placed gently on the hub.
There is no need to firmly press the disk cover down onto the hub.
The test will be aborted if the disk cover is not used.
METER CHECK DISK
The Meter Check Disk (1705) serves multiple purposes:
¬ When the Meter Check Disk (MCD) is run as an option from the Disk Series menu
following the Range Check Procedure, the values on the display are compared to the
values on the chart of the Meter Check Disk package to determine whether the meter
is reporting results in the expected ranges.
¬ The LED Calibration procedure uses the MCD to set the brightness of the LEDs.
¬ The MCD is used in the Angle Calibration procedure to analyze the alignment of the
hub and disk.
For use of the Meter Check Disk see page 17.
USB CABLE
A USB cable connects the WaterLink
®
Spin Touch
®
to a Windows
®
-based PC. When used
with the AC Power Adapter, it connects the meter to an AC outlet.
WARNING: only use the USB cable and wall adapter that are supplied with the kit. Make no
substitutions.
BATTERY
A fully charged battery will last for approximately 150 tests under average conditions. The
GENERAL OPERA
TING PROCEDURES