Pyxis 50219, Руководство пользователя

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1 Introduction
The Pyxis ST-600 Series inline sensor is uniquely designed to measure the real-time mass/mass concentra-
tion of bleach (sodium hypochlorite) by percentage as Chlorine (Cl
2
). The ST-600 Series sensor measures
the optical density of the beach solution using a near UV light source. The sensor has a built-in reference
light source and a reference light detector in addition to the main light source and main light detector. The
ST-600 Series sensor 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-600 Series sensor can be wirelessly accessed via
Bluetooth/WiFi when used in conjunction with the MA-WB Bluetooth Adapter or PowerPACK Series Aux-
iliary Box and the
uPyxis® Mobile or Desktop App. Directions on this wireless calibration capability are
included in this manual.
Primary Installation Format
The primary method is to install the sensor 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 sensor in-line using the unique 1/4” OD (7 mm 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 recommends users ap-
ply black electrical tape or shrink wrap to allow sample darkening prior to and after the
optical channel as seen in Figure 3.
1.1 Main Features
The ST-600 Series sensor includes the following features:
• Can be conveniently connected to the suction or discharge side of the bleach pump in both inline Tee
(ST-001) or 1/4” Teflon tubing format with using a union; both included with sensor.
• Can be wirelessly calibrated using bleach concentration standards with the uPyxis® Mobile or Desktop
App via a MA-WB Bluetooth/WiFi adapter or PowerPACK Series Auxiliary Box.
• Diagnostic information (sensor tubing fouling and failure modes) can be communicated to digital
displays via Modbus RTU.
• Offers an expanded range and a temperature signal communicated via 2-channel 4–20mA outputs
and a RS-485 output, Modbus RTU.
• Easy to remove from the system for cleaning and calibration without the need for any tools.
ST-600 Series User Manual service@pyxis-lab.com | +1 (866) 203-8397 2