Thermo Fisher Scientific Eutech CON 700 - Manual (Page 8)

4
3. ELECTRODE INFORMATION
The CON700 includes an electrode with a nominal cell constant of
k = 1.0, built-in temperature sensor, and 1 meter cable. The Ultem
body housing has good chemical resistant properties. The
electrode design offers fast temperature response and reduces air
entrapment, ensuring accurate, repeatable, and stable readings.
The wetted materials of the probe include:
•
Polyetherimide (Ultem) – protective probe guard
•
Polybutylterphalate (Valox) – sensor housing
•
Stainless Steel (SS 304) – 2 bands
The protective probe guard can be removed temporarily for
cleaning however it must be re-attached during measurement and
calibration. Erroneous results will occur while the probe guard
is removed.
Always immerse the probe beyond upper steel band for best
results. Use the fill line on the outside of the probe guard for
reference.
4. CALIBRATION
4.1 Automatic or Manual Calibration
The CON 700 is capable of automatic or manual calibration for
conductivity, and manual calibration for TDS.
In the automatic calibration mode, the meter will automatically select
one of (4) conductivity calibration standard values depending on the
range and normalization temperature being used (TABLE 1).
If you only use calibration standards that are listed in TABLE 1,
automatic calibration is recommended. If you intend to calibrate with
one or more standards that are not listed in TABLE 1, the CON 700
must be set for manual calibration instead.