Walchem’s WNI Series Nickel Controllers are optoelectronic on-line analyzers that measure the actual concentration of nickel in solution, displayed in grams per liter or ounces per gallon.
Use of these controllers in electroless plating baths reduces the need for manual titration, improves yield and automatically alerts the operator when maximum metal turnover limits have been reached which reduces scrap caused by over extending bath life. Exact set points are known precisely, eliminating the need for repeated adjustments or calibration.
The WNI Series models are low cost, microprocessor-based, menu driven industrial controllers. They are available as nickel-Request Quoteonly, or with a pH controloption which may beadded inthefield. Two separate pump outputs for nickel and reducer and another for pH are used, each of which is capable of totalizing either pump on time, volume pumped or metal turnovers.
Software, electronics and sensor are constantly monitored without having to take the controller off line. Any error messages are displayed.
Concentration Read in Units.
Selectable between grams per liter (g/L) or ounces per gallon (oz/gal). Backlit digital display also acts as a bar graph for a continuous “visual summary” for nickel only models.
Optional pH Input Board.
May be used to add pH adjustment chemistry. Output has a replenishment totalizer which may be set in units of time or volume.
Concentration set point, alarm set points (high and low), dead band and pump on time are all easily adjustable. An interlock feature allows external devices ( such as a flow switch ) to interlock control relays.
Programmable Access Codes.
Secure set point parameters. Program any four digit access number or disable the code requirement.
No Degassing Necessary.
Analog signal conditioning and a proprietary software algorithm eliminate the need for traditional degassing elements.