Copper nickel sensors are optoelectronic devices used to detect the concentration of copper or nickel in a solution. Walchem offers copper nickel sensors in conjunction with our on-line analyzers in a variety of applications including electroless copper or nickel baths, microetch baths, and a number of other chemical solutions that contain more than 0.10 grams/liter (g/L) of copper or nickel metal. In each type – copper detection sensor and nickel detection sensor – we offer flow-through sensors for out-of-tank monitoring of solutions. Additionally, we offer immersible copper sensors for direct in-tank monitoring. Each sensor type has its specified ranges in terms of ion detection, resolution, and accuracy.

Copper/Nickel Sensors

Key Benefits:

  • 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” of measurement versus set point.
  • Operator Adjustable
    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.
  • Simple, Integrated Data Collection Download stored data from the controller to a USB stick. Use the data to simply and easily validate system performance. The data and event logs show copper or nickel values, as well as accumulated chemical feed and relay activation times.
  • Four Separate Control Relays & Outputs (WCU) May be used to add copper, caustic, formaldehyde or chelator/stabilizer chemistries. Each output has a replenishment totalizer which may be set in units of time or volume.
  • Optional pH Input Board (WNI)
    May be used to add pH adjustment chemistry. Output has a replenishment totalizer which may be set in units of time or volume.

Copper and Nickel Sensor Specifications

Here are specs for both copper and nickel detection sensors.

Copper Sensors:

Range• 0.10 to 99 g/l (varies with the chemical being measured)
• 0.10 to 5.50 g/l typical for electroless copper
Resolution0.01 g/l

Nickel Sensors

Range0.10 to 25 g/l (varies with the chemical being measured)
Resolution0.01 g/l

Beneficial Features of Copper and Nickel Detection Sensors

Our controller sensors can benefit your chemical process applications in various ways. Here are some benefits.

  • The concentration value may be displayed in either gram per liter (g/L) or ounce per gallon (oz./gal). You can select the unit of your choice or requirement.
  • Our copper and nickel sensors are designed for precise detection and measurements.
  • They are stable in harsh operating environments and elevated temperatures.
  • They enable fast and real-time monitoring of copper or nickel levels, leading to precise and quick analysis.
  • They have a compact design and hence are suited for controllers operated in cramped spaces.

They have a wide detection range and can be used in various mixed or contaminated samples to detect copper or nickel concentration.

Maintenance of Copper Nickel Sensors

While our controllers are quite low on maintenance, it is essential to clean the sensors. Here are some pointers in this context.

  • The sensors must be cleaned periodically.
  • The frequency of the cleaning can be decided on the basis of installation.
  • If the sensor is new then regularly cleaning may not be required. In this scenario, the cleaning must only be done in conditions where 1-point calibration is difficult to perform.
  • Always use chemical cleaning methods, since mechanical cleaning may damage the sensor.
  • The optical path of the sensor must be cleaned of coatings or plate out.

The optional pH electrode for electroless nickel applications must be cleaned and calibrated regularly.

Applications of Copper and Nickel Sensors

Here are some application areas of copper and nickel detection sensors.

  • Electroless plating
  • Microetch solutions
  • Many electroplating solutions

At Walchem, we offer copper nickel sensors separately or with controllers aside from other accessories. If you require water treatment controllers or any of the accessories including copper detection sensors or nickel detection sensors, feel free to call us at 508-429-1110.