• P5128 Electroless Nickel Controller
P5128 Electroless Nickel Controller
P5128 Electroless Nickel Controller
• Based on a 24-bit high-resolution A/D converter
• Automatic sampling analysis
• Photometric method for determining Nickel concentration in the plating bath
• Measuring cycle time adjustable
• Lamps for status alarm & failure alarm
• 2-stage abnormal & shutdown alarm
• Self-diagnosis & friendly calibration setting
• Highly stable and accurate with a wide measuring range
• 4.3” LCD color touch panel display
• Reagents free and cost-saving
• Graphical interface easy to operate and understand
• Language support in English and Chinese
• Automatic data storage with capacity up to 5000 historical records. (User could expend memory by using 32/64GB flash disk.)

In the electroplating industry, nickel sulfate solution is the main raw material for nickel electroplating and chemical nickel plating. The solution is a dark green color. The absorption of the solution depends of on the concentration. The P5128 Electroless Nickel Controller is designed for monitoring the nickel-plating bath at all times, available to ensure that when the nickel concentration and/or pH fall below their pre-set values, Equipped with an automatic pump which accurately supplements the amount of dosing whenever might be required and maintains the optimal pH value of concentration in anytime.
Operational Principle
P5128 Electroless Nickel Controller has an on-line photometer, pH meter and an external temperature sensor in the plating bath. The Nickel ion (Ni-) electrolyte solution can absorb the light from a specific wavelength of LED lamp. Following Beer-Lambert Law, it can determine Nickel’s concentration. Accessing with pH electrode in the measuring loop can give the accurate date and provide controller to execute the auto dosing process. When the nickel ion (Ni-) electrolyte solution passes through the measurement cell, to identify the amount of nickel consist in the concentration, absorption of the light variation could be measured by the LED light wavelength. The result of the amount of nickel ion in concentration can be measured by the absorption of light at high and low points.
General Specifications
Function Nickel concentration, pH, temperature monitor and control for the electroless Nickel plating process
Model P5128
Installation Wall-mount Type
Housing IP65
Dimensions H600*W400*L250mm
Range Ni+:0.1- 10 g/L, 0- 14 pH, 0- 100
Accuracy ±3 % of F.S. Range
Repeatability ± 0.01 g/L
Measurement Mode User-selectable 30 seconds to 30 minutes per measurement.
Data Log Simultaneously display parameters of Nickel, pH, temperature, and analysis status, nickel usage cycle, nickel adding volumes.
Auto-dosing 5 connection points for the supplement for Nickel dosages and pH solutions
Shutdown Alarm Abnormal detection of concentration, pH value and temperature (adjustable of high and low-point)
Light source/ detector Special LED with approx. 3 years of life span. Photodiode
Calibration 2-point manual calibration, high point, and low point
Principle 24-bit Single-Chip Controller; high integrated SMD Technology, 24-bit AD-Converting. Signal filtration, simulation of the stability of wiring
Display 4.3” LCD color touch panel display
Self-Diagnosis The system is continuously self-diagnosis. The error management helps to identify problems. (Display errors and save historic data)
Sample Conditions • Sample temperature: a condensation device is equipped to cool down the sample and
• control temperature under 40 °C
• Sample flow: Continuous, 25 to 230 ml/min
• Sample connection: use of the external pump
• Suspended solids: 200 microns or less
• Ambient operating temperature: 0 – 40 °C
• Ambient operating humidity: Up to 95 % RH non-condensing
Electrical Conditions Power supply ranges:115 / 230 VAC, 50 / 60 Hz,<500 Watt
Analog Outputs 1 isolated current output, 4-20mA Range. With the option of RS485
Alarms / Relay outputs 8 relays:
• 1 sampling control relay
• 1 analysis alarm relay
• 1 failure alarm relay
• 5 connection points for fully user-assignable relays