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SP-765SS Series Sensor Manual service@pyxis-lab.com | +1 (866) 203-8397 14
4.1.3 4-20mA Span
The default oxidizer 4-20mA span for ST-765SS Series probes is as follows.
ST-765SS-FCL 4mA=0ppm Free Chlorine / 20mA = 5ppm Free Chlorine
ST-765SS-CLO 4mA=0ppm Chlorine Dioxide / 20mA = 5ppm Chlorine Dioxide
Tap
4-20mA SPAN
to change the free chlorine or chlorine dioxide value corresponding to the 20mA output
to a lower value as seen in Figure 9 .
*NOTE*
The 4-20mA Span feature allows users to REDUCE the upper
20mA output scale only. You cannot INCREASE the upper limit of the sensor beyond the range of the
sensor.
Figure 1 1 Enter free chlorine concentration to set 4-20mA Figure 1 2 Diagnostic Interface
4.1.4 Diagnosis
Tap Diagnosis in the bottom of the app page to launch the diagnosis page Figure 10 Figure 10.
In this page, the raw data measured by the sensor is displayed. To help troubleshooting possible issues with
the sensor, please save images of these data when the sensor is respectively placed in a clean water (tap
water or deionized water), in a free chlorine, chlorine dioxide or pH standard solution, and in the sample
that the sensor is intended for. This data may be exported from the uPyxis APP via email to service@pyxis-
lab.com for technical support.