Pyxis ST-601, Руководство по эксплуатации, Страница: 4 / 18

Pyxis ST-601 Operation Manual 4
1 Introduction
The Pyxis ST-601 inline probe are uniquely designed to measure the real-time mass/mass concentration
of chlorine dioxide (ClO2) in a range of 0.01-0.35%. The ST-601 probes measure the optical absorbance
of the ClO2 solution using a UV light source. The probes have a built-in reference light source and a
reference light detector in addition to the main light source and main light detector. The ST-601 probes
can be connected to any device that accepts an isolated or non-isolated 4-20mA input or RS-485
Modbus. As with all Pyxis inline sensors, the ST-601 probes can be wirelessly accessed via Bluetooth
when used in conjunction with the MA-WB Bluetooth Adapter or PowerPACK Series Auxiliary Box and
the
uPyxis App for Mobile phone and PC. Instructions on this wireless calibration capability are included
in this manual.
PRIMARY INSTALLATION FORMAT
The primary method is to install the probe in-line with of the suction side of the chemical feed pump in
piping format. This method should ideally in a vertical line run to avoid chlorine gas bubble
interference. This can be done with the standard ST-
001 Inline Tee Assembly (3/4” FNPT) provided with
each sensor. Pyxis also offers 2” and 3” inline tee assemblies as an accessory option if required.
TEFLON TUBE INSTALLATION FORMAT
The second method is to install the probe in-line using the unique ¼” OD (7mm OD) clear Teflon tubing
adapter 6 inches in length . This tubing can be passed “THROUGH” the optical channel to allow for use of
the sensor with smaller chemical feed line installations on the suction side of the chemical feed pump.
*NOTE* for enhanced ambient light interference prevention, Pyxis commends users apply black
electrical tape or shrink wrap to allow sample darkening prior to and after the optical channel as seen
in the sensor photo in the Section 2 of this manual.
1.1 Features of the Pyxis ST-601
The ST-601 probes include the following features:
•
The probe can be conveniently connected to the suction or discharge side of the pump in both
inline Tee (ST-001) or
¼” Teflon tubing format with using a union. Both included with probe.
•
The probe can be calibrated with Mobile App or PC software via a MA-WB Bluetooth adapter or
PowerPACK Series Aux. Box.
•
Diagnostic information (probe tubing fouling and failure modes) can be communicated to digital
displays via Modbus RTU.
•
ST-601 can be wireless calibrated using known chlorine dioxide concentration standards via
uPyxis App for Mobile phone or PC.