Pyxis 50219, Руководство пользователя

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4.2 Teflon Tubing
The provided 1/4” OD (7 mm OD) clear Teflon tubing adapter 6” in length. This tubing can be passed
“THROUGH” the optical channel to allow for use of the sensor with smaller chemical feed line installa-
tions on the suction side of the chemical feed pump. Users can use conventional 1/4” OD compression
fittings to connect desired inlet and outlet bleach line size to the ST-600 Series. This method should ideally
in a vertical line run to avoid chlorine gas bubble interference.
*
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.
Figure 3. ST-600 Series sensor with clear Teflon tube adapter
4.3 Wiring
If insufficient wattage is available from the connected controller (ie. 2.0 W), Pyxis recommends the Power-
PACK Series Auxiliary Power & Communication Box highlighted in the
Optional Accessories section.
*
NOTE
*
There is no 4–20mA negative wire to the controller, please connect controller 24V
power ground terminal to controller 4–20mA negative terminal with a short wire.
Follow the wiring table below to connect the ST-600 Series sensor to a controller:
Table 2.
Wire Color Designation
Red 24V +
Black 24V Power ground
White 4–20mA + for Temperature
Green 4–20mA + for Bleach
Blue RS-485 A
Yellow RS-485 B
Clear Shield, earth ground
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