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3.2
Mounting the electronic enclosure
The WCU series controller is supplied with mounting holes on the enclosure. It
should be wall mounted with the display at eye level, on a vibration-free surface,
utilizing all 4 mounting holes for maximum stability. Use M6 (1/4" diameter)
fasteners that are appropriate for the substrate material of the wall. The enclosure is
NEMA 4X rated. The maximum operating ambient temperature is 122° F (50° C).
The enclosure requires the following clearances:
3.3
Immersible Copper Sensor Installation
The immersible copper sensor is designed for direct in-tank monitoring of
electroless copper and microetch solutions. By monitoring the copper content
directly in the solution, control lag and hydraulic problems are eliminated.
The sensor is constructed such that a constant path length exists between the fiber
optic light guides. The solution between the light guides absorbs light at specific
wavelengths in proportion to the copper concentration. The lamp and electronics are
located under the cover of the sensor. In order to avoid a shift in calibration due to
condensation, the sensor's cover should NEVER be opened.
The immersible sensor is provided with a mounting plate and 20 feet of cable.
Extension cable is available if the sensor can not be mounted within 20 feet of the
controller. The maximum cable length is 80 feet.
While the positioning of the sensor is not particularly sensitive to the tank layout,
the following suggestions are given to aid installation:
¾ Do not place the sensor beside heaters; if solution flow stops, the polypropylene
guard may melt.
¾ Do not immerse the entire sensor, or the cable.
¾ Place the sensor where the loads of parts will not strike it.
¾ Place the sensor in an area of good solution movement, but not directly in the
path of any air agitation.
¾ Mount the sensor securely to the rim of the tank using the holes provided. If the
tank is rimless, use a block to provide the support for the mounting plate.
Attach the cable's connector to the WCU controller. The connector is keyed, do not
force! The sensor you receive with the controller has already been calibrated.
Top:
2"
Left:
8"
Right:
4"
Bottom:
7"
3
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