Technical Advantage

Cathodic protection potentiostat, in simple terms, is an electrochemical workstation that maintains the potential of metal structures (such as pipelines) buried underground or in water within a corrosion-resistant range by automatically controlling the output current. It is the core of the external current cathodic protection system.

The intelligent constant potential meter also has a built-in wireless communication module, which can transmit parameters such as cathodic protection potential, output current, and output voltage through wireless networks (4G, NB); The wired network (Ethernet port, RS485) can be uploaded to the cathodic protection platform to achieve remote transmission and control of equipment parameters.

Protection function: The device has functions such as lightning protection, overcurrent protection, overheating protection, and fault protection.

Primary backup switching: The device has an automatic switching function between the main and backup machines. When the main machine fails, the device automatically switches to the backup machine for operation.

Data remote transmission: The device has a wireless remote transmission module with remote measurement and control functions, and the device provides an RS485 communication port.

Anti interference design: The equipment has anti sustained interference characteristics and can adapt to various harsh environments on site.

On/off mode: The device has remote and local control on/off modes of 12/3 seconds, and can be matched with the on/off mode of the detection instrument.

Multiple operating modes: The device has three operating modes: constant potential, constant voltage, and constant current.

Technical Specifications

Input voltage: single-phase 220VAC ± 10% or three-phase 380VAC ± 10%

Input frequency: 50Hz ± 10%;

Output current: DC (0-75A) can be continuously linearly adjusted (range can be customized);

Output voltage: DC (0-75V) can be continuously linearly adjusted (range can be customized);

Given potential: DC -1000~+3000mV;

Tracking accuracy: (under constant potential mode) ≤ 5mV;

Constant pressure accuracy: ≤ 1% soil;

Input impedance: Reference input impedance ≥ 10MQ;

Ripple coefficient: Ripple coefficient ≤ 2% when the equipment is running at full load;

Communication port: Provides standard RS-485 communication port;

Working temperature: -20 ° C~+55 ° C;

Protection level: IP42;

Function Overview

• The constant potential meter can measure and display various output voltages, output currents, tube/ground potentials, power supply voltages, and other parameters with an accuracy of 1.5 levels. At the same time, indicator lights are used to display various working states.

• The operation state transition of the potentiostat can control the operation state of the equipment circuit from constant current to constant potential, or from constant potential to constant current.

• The potentiostat has a self checking function.

• The control range of constant potential is determined by the type of protected structure and the type of reference electrode used, and can be continuously adjusted within this range. When using Cu/CuSO4 reference electrode and high-purity zinc reference electrode for cathodic protection of carbon steel and low-alloy steel, the constant potential control range should be+1~- UneN (V)

• When the potential of the energized point deviates from the control potential by 30mV~100mV, the potentiostat can sound and light an alarm.