TEMPHION INSTRUCTIONS
Seametrics • 253.872.0284
Page 21 seametrics.com
MAINTENANCE and REFERENCE
Sensor
There are no user-serviceable parts, other than the batteries
and reference solution. If problems develop with sensor
stability or accuracy, contact Seametrics. If the sensors
have been exposed to hazardous materials, do not return
them without notification and authorization.
Cable
Cable can be damaged by abrasion, sharp objects, twisting,
crimping, crushing, or pulling. Take care during installation
and use to avoid cable damage. If a section of cable is
damaged, it is recommended that you send your sensor
back to replace the cable harness assembly.
End Connections
The contact areas (pins & sockets) of the connectors will
wear out with extensive use. If your application requires
repeated connections other types of connectors can be
provided. The connectors used by Seametrics are not
submersible, but are designed to be splash-resistant.
Care and Filling of Reference Solution Reservoir
The TempHion’s patented reference electrode is key to the
TempHion’s superior performance. The TempHion uses a
long capillary pathway, filled with reference solution, to
separate the reference electrode from the solution being
analyzed. Proper care and filling of this reference solution
reservoir is essential to accurate functioning of the sensor.
All TempHions need to have reference solution in the
solution reservoir. The following chart shows the reference
solution that should be used with various elements. (
There
are also specific settings that are set under Advanced
Calibration. These are set at the factory to match your
element and need not be changed by the user. They are
listed here for reference only.)
Element
Reference
Solution
Isopotential
Factor P
Temperature
Factor H
Offset
pH
Seametrics
2.97
0.567
--
ORP (Redox)
Seametrics
--
0.54
0
Chloride
ION-Plus B
3.572
0.49
--
Bromide
Seametrics
3.878
0.89
--
CAUTION!
Filling solutions are not considered hazardous,
but they can be irritating to the skin.
Protective gloves are advised. Rinse hands or
gloves with fresh water.
Emptying and Cleaning the Reservoir
Your TempHion is normally shipped from the factory
already filled with reference solution. However, from time
to time you will need to replace the reference solution.
If you notice you are getting erratic readings, this is an
indication that the filling solution may need to be replaced.
We also recommend replacing the filling solution when
doing periodic calibrations.
The TempHion is normally shipped with a bottle of
Seametrics Reference Solution. If you will be using a
different solution, contact Seametrics for any adjustments
that may be needed.
• Unscrew the reservoir cap.
Do not touch or
scratch the sensing buttons or the reference
electrode!
•
Empty any remaining filling solution from the cap.
• Thoroughly rinse the reference electrode and the
inside of the cap with distilled or de-ionized water.
• There may be some crystallized residue inside
the cap, on the electrode screw path, or on the
electrode itself. If rinsing does not clear this away,
then gently use a cotton swab or a soft toothbrush
to remove the residue.
• Rinse the electrode assembly and cap thoroughly
again after cleaning with the swab or brush.
• Gently, pat dry with a clean paper towel.
Filling the Reservoir
Once the reservoir has been emptied and cleaned, you are
ready to fill the reservoir with reference solution.
• Rinse the reference electrode assembly and the
inside of the cap with a small amount of the
reference solution.
• Empty any remaining solution from the cap.
• Fill cap about half full with reference solution.
• Holding sensor vertically, replace reservoir cap.
Some solution should spill from the top as you
screw the cap on. This assures that no air bubbles
are trapped inside.
If any air bubbles are trapped,
a proper electrical connection cannot be made
