6.5
Diagnosis Screen
After the device has been calibrated and installation has been completed, to check diagnosis, click on
Diag-
nosis
. When in the
Diagnosis
screen you can view the Diagnosis Condition of the device. This feature may
be used for technical support when communicating with
. To preform a Cleanliness
and Selflife Check, first select the
Diagnosis Condition
which defines the fluid type that the ST-773 sensor
is currently measuring, then click
Cleanliness and Selflife Check
. If the sensor is clean, a
Clean
message
will be shown. If the sensor is fouled, a
Please replace the DO membrane cap
message will be shown. In
this case, follow the procedure in the
Methods to Cleaning the ST-773
section of this manual.
Figure 14.
7
Outputs
7.1
4–20mA Output Setup
The 4–20mA output of the ST-773 sensor is scaled as:
• Dissolved Oxygen:
–
4 mA = 0 ppm
–
20 mA = 20 ppm
ST-773 User Manual
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