Stable Conductivity Controller:EC20-SA1

EC20-SA1 is an industrial-grade online water quality monitoring conductivity controller with a microprocessor and inductive conductivity electrode. It measures conductivity of aqueous solutions, TDS, and controls acid-base salt concentration and temperature continuous. The instrument uses a dot matrix LCD screen, intelligent menu operation in Chinese and English, multi-parameter display, multiple calibration modes, alarm control, and data recording functions, and is widely used in chemical, water treatment, environmental monitoring, pulp, and paper industries to provide precise data for process and quality control.

★★★★★

  • Short delivery time
  • Better price
  • Customizable parameters

Features

  • Dot matrix LCD screen display, intelligent menu operation
  • Data recording, multiple automatic calibration functions, multiple signal output methods
  • Manual and automatic temperature compensation
  • Three sets of relay control switches, high limit, low limit, and hysteresis control
  • Display conductivity on the same interface TDS、 Temperature, current, etc

Specifications

CategorySpecifications
Measurement RangeConductivity: 0–2000mS/cmTDS: 0–1000g/LConcentration: Built-in chemical concentration table (supports NaOH, CaCl₂, HNO₃, H₂SO₄, HCl, NaCl, etc.; 10-point custom concentration optional)Temperature: 0–150℃ (depending on the electrode)
Measurement AccuracyConductivity: ±1% F.SConcentration: ±0.2%TDS: ±1% F.STemperature: ±0.3℃
ResolutionConductivity: 0.01μS/cm, 0.01mS/cmConcentration: 0.01%TDS: 0.01mg/L, 0.01g/LTemperature: 0.1℃
Temperature CompensationAutomatic or manual; compensation range: 0–130℃ (reference temperature: 25℃); temperature coefficient adjustable (0.00~9.99% for low-concentration solutions)
Stability±0.2% F.S/24h
Output FunctionsCurrent Output: 2 channels (standard 4–20mA; optional 0–20mA/20–4mA), load resistance <750ΩCommunication Output: RS485 Modbus RTU (standard)Relay Control: 3 groups, 5A 240VAC/5A 28VDC or 120VAC (supports high/low limit alarm and adjustable hysteresis)
Power Supply85–265VAC ±10%, 50±1Hz or 9–36VDC; power ≤3W
Physical ParametersDimensions: 144×144×118mmMounting Hole Size: 138×138mmMounting Type: Panel-mounted (embedded)/wall-mountedProtection Level: IP65Weight: 0.8kg
Operating EnvironmentTemperature: -10~60℃Relative Humidity: ≤90% (no strong magnetic interference except Earth’s magnetic field)

Standard Configuration

  • Host:EC20-SA1 conductivity controller
  • Conductive electrode:KSF-PFA
ParameterSpecification
Measurement Range0.0ms/cm—2000ms/cm
MaterialPFA
Temperature CompensationNTC10K
Temperature Resistance0~130℃
Pressure Resistance6bar
Thread sizeG 3/4”

Purpose:

  • Special corrosive solutions with high temperature resistance, strong acid and alkali resistance, etc
  • Electrode for conductivity measurement, suitable for high conductivity range

Core Highlights

  • ± 1% F.S. measurement precision and strong 24-hour stability mean that you can trust the results even when things are complicated. The temperature adjustment feature makes sure of this.
  • Full functionality: can measure many parameters, set a custom concentration at 10 points, save a lot of data, and query curves. It can also adapt to different needs.
  • Easy to use: there are menus in Chinese and English, touch buttons, and all the parameters can be shown on the same screen. Calibration and setting parameters are very easy.
  • It can handle a wide range of voltages, has IP65 protection, and comes with electrodes that won’t corrode, making it great for demanding industrial environments.

Featured Applications

  • In the chemical business, keep an eye on the concentration and conductivity of sulfuric acid, sodium hydroxide, and sodium chloride solutions to make sure the reaction process stays stable.
  • Water treatment includes keeping an eye on pure and ultrapure water systems, industrial moving water, and wastewater treatment to keep equipment from scaling and rusting.
  • Finding the conductivity of high-salinity wastewater and industrial wastewater discharge in real time as part of environmental tracking can help control pollution.
  • In the pulp and paper industry, the water quality of production process water and waste liquid must be monitored, and production methods must be made as efficient as possible.

Instructions for installing and using

A few quick steps for installation

  • Installing the instrument: It is fixed in the instrument cabinet or box, kept out of direct sunlight and water, and linked to power wires (but not powered).
  • Electrode installation: Supports different ways of installing electrodes, like flange type, three-way type, immersion type (with bracket), and others, to make sure that the electrode makes complete contact with the solution being measured.
  • Wiring connection: Connect the electrode terminals one at a time, following their colors and instrument markings. The power and signal wires must be connected in a way that meets electrical regulations, and the ground wire must be properly grounded.
  • Settings for power on: Plug in the power, go to the parameter menu, check the parameters based on the electrode constant and measurement range (which are specified at the factory), and then go to the measurement state after you’re done.

Technical Support

Firstly, a conductivity standard solution that matches the measurement range should be selected. Before calibration, the electrode should be washed and wiped dry to ensure that there are no residual pollutants; Fully immerse the electrode in the standard solution, avoiding contact with the container wall or bottom; After the temperature displayed on the instrument stabilizes with the temperature of the standard solution (recommended to be close to the reference temperature of 25 ℃), input the concentration/conductivity value of the standard solution for calibration; During the calibration process, avoid moving the electrode or stirring the solution. After calibration is over, wait for the instrument to prompt “Calibration successful” before exiting the menu.

Firstly, confirm whether the working environment of the instrument is within the rated range (temperature -20~60 ℃, humidity ≤ 90%). If it exceeds the range, protective devices (such as sunshades and moisture-proof boxes) need to be installed; Next, check the sealing of the electrodes to ensure that the waterproof treatment of the terminals is in place and to prevent moisture from entering; Regularly clean the electrode surface to remove condensation or pollutants; If drift still exists, the calibration cycle can be shortened (such as calibrating every 3-6 months), or the “dynamic correction” function can be enabled to correct measurement deviations in real time using laboratory data.

Okay. Enter “Current Settings” and select “Current One” and “Current Two” respectively. Through “Channel Selection”, you can specify the corresponding “Main Measurement” (Conductivity/Concentration/TDS) or “Temperature” parameters. When setting the upper and lower limit values, enter the “upper limit value” and “lower limit value” options of the corresponding current channel, use the up and down keys to adjust the value, use the left and right keys to move the cursor or set the decimal point, and the data unit will automatically switch according to the current measurement parameters (such as μ S/cm,%, ℃). After setting, press “confirm” to take effect.

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In industrial scenarios such as chemical production, water treatment control, and environmental monitoring, precise control of water quality data is directly related to production efficiency and safety. Sino Inst EC20-SA1 online electromagnetic conductivity meter, with electromagnetic induction measurement technology and intelligent control design, easily meets the monitoring needs of conductivity, concentration, TDS, and temperature under complex working conditions.

We always focus on providing practical, easy-to-use and durable water quality monitoring equipment, and have a professional technical team to provide you with selection guidance, installation and commissioning, and after-sales maintenance support. Choose EC20-SA1 to bid farewell to the complexity and errors of water quality monitoring, build strong data support for your production process, and help with efficient control and stable production!

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