Xylem 6-Series Multiparameter - Manual (Page 125)

Sondes Section 2
YSI Incorporated Environmental Monitoring Systems Operations Manual 2-119
regeneration cycle has been successful. The felt filters should also be dried at about 100° C (about 200° F)
for about 30 minutes before assembly.
Desiccant material is sold separately. Both the cartridge and canister can easily be opened, emptied, and
refilled.
CAUTION
: It is important to keep the tube in vented sondes and cables dry. They are supplied with caps
for closing the volume when not in use. Keep the caps on until just before calibration and deployment. For
storage, replace the caps.
6882 CHLORIDE, 6883 NITRATE AND 6884 AMMONIUM SENSORS
You should clean these probes whenever deposits or contaminants appear on the ion selective membranes
located on the tips of these sensor modules. If possible, the
module should be cleaned while installed in the sonde
bulkhead. Use clean water and a moist piece of lens
cleaning tissue to gently wipe the sensor membranes until no
more contaminants are removed. However, under some
conditions, it may be necessary to remove the module from
the sonde bulkhead for cleaning and/or storage. To remove
the module, follow the diagram at the side. Remove the
module with finger pressure only, if possible. However, it is
acceptable to use small pliers if necessary to loosen the
module for final removal by hand. Be very careful not to
squeeze the module any more than is necessary for a firm
grip. Use slipjaw pliers to minimize the chance of
applying too much pressure on the module. While the
module is removed from the sonde, be sure to dry the sonde port and probe connector with compressed air
and apply a very thin coat of lubricant to the O-ring before re-installation.
NOTE: The ion selective membranes are fragile. Be certain to: (1) Use only moist, high quality lens
cleaning tissue for the cleaning procedure (not paper towels or other coarse materials); and (2) Stroke the
probe face very gently with the tissue during the procedure. If you do not adhere to these instructions, you
can seriously damage the sensors.
OPTICAL PROBES–6026 AND 6136 TURBIDITY; 6025 CHLOROPHYLL; 6131 BGA-PC; 6132 BGA-
PE; 6130 RHODAMINE WT
The 6026, 6136, 6025, 6131, 6132, and 6130 probes require only minimal maintenance. After each
deployment, the optical surface on the tip of the turbidity probe
should be inspected for fouling and cleaned if necessary by
gently wiping the probe face with moist lens cleaning paper. In
addition, for the 6025, 6026, 6136, and 6130 probes, we
recommended replacing the wiper periodically. The frequency
of this replacement depends on the quality of water under
examination. A replacement wiper is supplied with the probes,
along with the small hex driver required for its removal and
reinstallation. Follow the instructions supplied with the probe to
ensure proper installation of the new wiper assembly.
Additional wipers are available from YSI.
PLIERS (SLIP-JAW)
AMMONIUM OR
NITRATE PROBE
NON-WIPING
TURBIDITY PROBE
WIPER
ASSEMBLY
WIPING
OPTICAL PROBE