Hach-Lange POLYMETRON 9500 Contacting Conductivity Sensors User Manual - Manual (Page 7)

Figure 4 Flow chamber mounting example
Note: The arrows indicate the sample flow direction.
Make sure the NPT fittings of the flow chamber are leak free by adding waterproofing material onto
the male thread. The recommended waterproofing material for each flow chamber is:
Flow chamber
Sensor
8310/8311/8312
Sensor
8315/8316/8317/8394
08313=A=0001 PTFE thread sealant tape PTFE thread sealant tape
08318=A=0001 PTFE thread sealant tape Loctite 577
08394=A=8200 PTFE thread sealant tape Loctite 577
08394=A=8150 PTFE thread sealant tape Loctite 577
Maintenance
D A N G E R
Multiple hazards. Only qualified personnel should conduct the tasks described in this section of the manual.
Controller
Refer to the Maintenance section of the controller documentation.
Clean the sensor
W A R N I N G
Chemical hazard. Always wear personal safety protection in accordance with the Material Safety Data Sheet for
the chemical that is used.
W A R N I N G
Personal injury hazard. Removal of a sensor from a pressurized vessel can be dangerous. Reduce the process
pressure to below 10 psi before removal. If this is not possible, use extreme caution. Refer to the documentation
supplied with the mounting hardware for more information.
Pre-requisite: Prepare a mild soap solution with a non-abrasive dishwashing detergent that does not
contain lanolin. Lanolin leaves a film on the electrode surface that can degrade the sensor
performance.
Examine the sensor periodically for debris and deposits. Clean the sensor when there is a buildup of
deposits or when performance has degraded.
English 7