YSI 5200A - Manual (Page 96)

YSI 5200A
191
YSI 5200A
190
Long Term Storage
Long term storage is defined as a period of time > 30 days.
Probe/Cable Assembly Storage
Follow instructions below for long term storage of sensors.
Sensor Storage
Temperature/Conductivity Sensor
No special precautions are required. The sensor can be stored dry or wet as long
as solutions in contact with the thermistor and conductivity electrodes are not cor-
rosive (for example, chlorine bleach). However, it is recommended that the sensor
be cleaned with the provided brush prior to long term storage.
pH and Combination pH/ORP Sensor
The key to sensor storage is to make certain that the reference electrode junction
does not dry out. Junctions which have been allowed to dry out due to improper
storage procedures can usually be rehydrated by soaking the sensor for several hours
(overnight is recommended) in a solution of 2 molar potassium chloride or pH
buffer 4. However, in some cases, the sensor may have been permanently damaged
by dehydration and will require replacement.
CAUTION: Do not store the sensor in distilled or deionized water as the sensor
may be damaged by exposure to this medium.
1. Remove the pH or pH/ORP sensor from the probe module.
2. Seal the empty port with the provided port plug.
3. Place the sensor in the storage vessel (plastic boot or bottle) that was on
the sensor during shipment. The vessel should contain a solution which
is 2 molar potassium chloride or pH buffer 4.
Note - Make certain that the vessel is sealed to prevent evaporation of the storage
solution.
Maintenance
DO Sensor
The DO sensor should be stored dry with a dry membrane cap installed to protect
it.
1. Remove the used membrane cap.
2. Rinse the DO sensor with distilled or deionized water.
3. Dry the DO sensor and install a new, dry membrane cap.
Sensor Replacement
All 5200A sensors are user replaceable. Refer to the instruction sheet provided with
the replacement sensor for detailed instructions.
Charging DC batteries
The 5200A does not charge batteries. Quality assurance maintenance procedures
should be established if batteries are to be fully powered when used as back-up
power source.
AquaManager Database Maintenance
See AquaManager Database Maintenance - page 177 and AquaManager Online
Help for additional information.
Replacement Parts & Accessories
See www.YSI.com for replacement part and accessory information and Appendix
5 of this manual - starting on page 234.
Maintenance