Water analyzer W761-DCS4

chlorineprocessindustrial

Product OverviewOnline Residual Chlorine Analyzer is equipped with sensors imported directly from Germany. The detection part adopts a special osmotic membrane technology, which has the characteristics of resistance to chemical interference (mainly from surfactants) and reduced pH dependence. The sensor is not restricted by water quality conditions, features a fast response speed, stable working performance, low cost, and requires minimal maintenance, providing users with reliable and accurate data.The instrument is equipped with an LCD liquid crystal display screen and features an intelligent Chinese/English menu operation. It has current output and RS485 output, allows free setting of the measurement range, provides high and low limit alarm prompts, three sets of relay control switches, and an adjustable hysteresis range. There are also multiple automatic calibration methods for the electrodes.The entire measurement system mainly consists of two parts: the instrument and the sensor. The instrument displays the disinfectant value (main measured value), the pH value of the aqueous solution (a pH electrode is required for selection), and the working status. It outputs signals such as analog, digital, and switching signals.The sensor is from the original German-imported RG brand and operates based on the principle of the constant-current method of the film-covered three (dual) electrodes. It has the characteristics of anti-interference and anti-pollution.Application FieldsTap water: 0 - 2mg/LSwimming pool water: 0 - 5mg/L for the measurement of cyanuric acidMedical water: 0 - 0.5mg/L; with a conductivity as low as 10μS/cmSewage treatment: 0 - 20mg/LFruit and vegetable disinfection: 0 - 200mg/LSeawater: with a conductivity as high as 50mS/cmHigh-salt seawater: brine or seawater with a concentration greater than 3.5% (>50mS), and the salt content can be up to approximately 26%Pipeline disinfection: 0 - 2.5mg/L with a water temperature as high as 70℃Industrial water treatment: 0 - 2000mg/L, etc.Functional FeaturesStandard - equipped with imported sensors, ensuring accurate measurement and stable performance.One-key calibration, historical data recording and export.Standard MODBUS RTU communication protocol.Dual high-impedance pre-amplifiers: High input impedance, noise-proof, and strong anti-interference ability.Stable zero-point. Only one-point calibration is required on-site, and multiple calibration methods are also provided.Human-machine interaction: Menu-based operation structure, allowing users to operate following the on-screen prompts.Multi-parameter display on the same screen: Simultaneously display the main measured value, pH value (optional), current output, and working status.Two-way output signals: The software can select from three output modes: 4-20mA / 20-4mA / 0-20mA.Free setting of the measurement range and alarm upper and lower limits; High and low limit over-range alarm prompts.Three sets of relay control switches with an adjustable hysteresis control range.Self-set password: Users can set or modify passwords to avoid misoperation.Technical ParametersSpecificationDetailed informationMeasurement ParametersChlorine, pH (optional)Measuring Ranges0.005～0.500mg/L; 0.005～2.000mg/L; 0.05～5.00mg/L; 0.05～10.00mg/L; 0.05～20.00mg/L; 0.5～200.0mg/L; 0.03～2.5mg/L; 20～2000mg/L (special application)Lower Limit of Measurement0.005mg/LResolution0.001～1mg/L (depending on the measuring range)Accuracy (@25℃, pH 7.2)In the measurement range of 0 - 1ppm, when calibrated at 0.5ppm, the error is ±2% of the measured value or ±0.03ppm (take the larger one).In the measurement range of 1 - 2ppm, when calibrated at 1.5ppm, the error is ±2% of the measured value or ±0.03ppm (take the larger one).In the measurement range of 0 - 10ppm, when calibrated at 5.0ppm, the error is ±2% of the measured value or ±0.3ppm (take the larger one).In the measurement range of 10 - 20ppm, when calibrated at 15.0ppm, the error is ±5% of the measured value or ±0.5ppm (take the larger one).Response timeT90≈2 minutesDriftApproximately -1% per month (after calibration at 25℃ and pH = 7.2)PH range4.0 - 12.0 (depending on the electrode)Maintenance Cycle≥90 daysConductivity range10μS/cm - 50mS/cm (Special applications for values > 50mS/cm)DisplayLCD liquid-crystal screenData StorageIt has an automatic storage function and data protection in case of power failure. In total, it can store 110,000 pieces of data.Power supply105～235VAC, 50±1Hz/24VDC±5% (DC is optional)Power≤3W (including the sensor)Analog OutputTwo-way analog output, with optional signals: 4-20mA / 20-4mA / 0-20mA (load resistance Digital outputRS485 interface, MODBUS RTU protocolRelay outputThree-way relay 3A 250VAC; 3A 28VDC or 120VACMaterialPowder-coated steel plateSize300*250*165mm (H*W*D)Weight6kgWaterway interface2-inch or 3-inch hose (custom made)Flow rateIn flow chamber: 250～500mL/minProtection levelIP43Water pressure≤6 bar (matching a pressure-reducing valve with the instrument)Working humidity<90%, no condensationWorking temperatureInstrument: -15℃～50℃; sensor water temperature: 0.1℃～45℃ (0.1°C to 70°C for special applications)Storage temperatureInstrument: -20°C～60°C; sensor: 0.1°C～55°CFAQ – Frequently Asked QuestionsOur products are proudly designed and manufactured in China, following international quality standards and certified processes.We offer customized solutions and private labeling to meet your brand’s needs worldwide.Our products are tested to meet CE, RoHS, and other international certifications.We cooperate with major international couriers to ensure fast and reliable delivery to your location.We provide samples so you can evaluate product quality before committing to bulk orders.For standard products, we usually ship within 5–7 days after order confirmation. Customized products may take slightly longer.We offer 24/7 technical support, product guidance, and warranty service to ensure smooth operation.We offer remote technical assistance, manuals in English, and prompt solutions to any issues, ensuring smooth use worldwide.You can contact our sales team directly via email or website inquiry. We provide professional guidance throughout the ordering process.We combine over 30 years of manufacturing experience, advanced technology, strict quality control, and global customer service to deliver reliable, high-quality solutions.Model: W761-DCS4Brand: DABECOApplication: Tap water, swimming pool water, medical wastewater, sewage water treatment, fruit and vegetable disinfection, seawater, high-salt seawater, pipeline disinfection, industrial water treatment fields, etc.