A reliable ISO direct manufacturer with CE ROHS certificate.     Please contact    WaterAnalyzer@probesti.com  WaterMonitor@probesti.com    Probest@Probest.cn

FAQ Category

FAQ

  • Q How often does the PCT-600 need to be calibrated, and what is the calibration method?

    A

    How often does the PCT-600 need to be calibrated, and what is the calibration method?


    It is recommended to calibrate the PCT-600 once every 6-12 months (the specific cycle can be adjusted according to the actual water quality and monitoring requirements). The product supports two calibration methods: sample calibration and slope calibration. We will provide standard calibration procedures and related accessories in the product package. If you need professional calibration services, our after-sales team can also provide on-site support.

  • Q What application scenarios is the PCT-600 suitable for?

    A

    What application scenarios is the PCT-600 suitable for?


    The PCT-600 has a wide range of applications, including but not limited to:
    • Drinking water plants: Finished water color quality evaluation and factory inspection;
    • Sewage treatment plants: Color control in treatment processes and effluent compliance monitoring;
    • Industrial enterprises: Process water color monitoring in chemical, electronics, food, and other industries;
    • Environmental monitoring: Color monitoring and pollution source tracing of surface water, groundwater, and seawater;
    • Aquaculture and landscape water bodies: Real-time color monitoring to ensure ecological stability.
    This color sensor is mainly tap water, and it is yellow colored. The dyeing industry, on the other hand, will be very complicated and is not recommended. This is generally to be a professional color sensor, rather than our simple single wavelength color sensor.

  • Q Can the cable length of the PCT-600 be customized according to on-site needs?

    A

    Can the cable length of the PCT-600 be customized according to on-site needs?


    Yes. The standard cable length of the PCT-600 is 10 meters. If you need a longer cable for on-site installation (such as deep water monitoring or long-distance wiring), we support customization and can extend the cable length to a maximum of 100 meters without affecting data transmission stability. Please note that you need to specify the required cable length when placing an order.

  • Q Is the PCT-600 certified, and what quality guarantees does it have?

    A

    Is the PCT-600 certified, and what quality guarantees does it have?


    All PCT-600 products have passed CE, RoHS, and ISO9001 certifications, and undergo 100% full inspection before shipment to ensure stable and reliable quality. PROBEST has a professional R&D team of over 50 people and a production base of more than 7,000 square meters. We provide a one-year warranty for the product (excluding consumables and man-made damage) and offer lifelong technical support to solve your usage problems in a timely manner.

  • Q What is the operating temperature and pressure range of the PCT-600?

    A

    What is the operating temperature and pressure range of the PCT-600?


    The operating temperature range of the PCT-600 is 0-45℃ (no freezing), and the storage temperature is -15-50℃. It can adapt to most indoor and outdoor monitoring scenarios. The pressure range it can withstand is ≤0.4Mpa, which is fully compatible with common water treatment pipelines, ponds, and natural water body monitoring conditions.

  • Q What is the maintenance cycle of the PCT-600, and how to maintain it?

    A

    What is the maintenance cycle of the PCT-600, and how to maintain it?


    The PCT-600 color probe is designed for low maintenance. It is equipped with an automatic scraper cleaning function, which can regularly remove attachments on the sensor surface and reduce manual cleaning frequency. Under normal operating conditions, routine maintenance (such as checking cable connections and confirming calibration status) only needs to be performed every 3-6 months. For special harsh environments, we recommend adjusting the maintenance cycle appropriately. Calibration supports sample calibration and slope calibration, and the operation is simple and easy to master.

  • Q How to integrate the PCT-600 with the existing automatic control system of our enterprise?

    A

    How to integrate the PCT-600 with the existing automatic control system of our enterprise?


    The PCT-600 supports the standard MODBUS RS485 communication protocol and is equipped with 3-way 4-20mA analog outputs and three-way relay outputs. It can be seamlessly connected to most industrial automatic control systems (such as PLC, DCS) on the market. Our technical team will provide detailed integration guidelines and after-sales support to ensure smooth docking and realize functions like real-time data transmission, automatic early warning, and process interlock control.

  • Q Does the PCT-600 Color monitoring requires chemical reagents or regular sampling during use?

    A

    Does the PCT-600 Color monitoring requires chemical reagents or regular sampling during use?


    No. The PCT-600 features in-situ immersion measurement—there’s no need for manual sampling, sample pretreatment, or chemical reagents. It directly detects water color in real time, eliminating the tedious processes of traditional monitoring, avoiding secondary pollution caused by reagents, and greatly reducing operational costs and labor intensity.

  • Q Can the PCT-600 be used in harsh environments like seawater or industrial sewage?

    A

    Can the PCT-600 be used in harsh environments like seawater or industrial sewage?


    Absolutely. The PCT-600 is designed with strong environmental adaptability: the standard version uses SUS316L stainless steel as the main body material, and a titanium alloy version is optional for seawater or high-corrosion scenarios. With an IP68 protection level for the sensor, it can withstand long-term immersion in water, high humidity, and other harsh conditions, making it suitable for industrial sewage, seawater, and complex field monitoring environments. 
    This color sensor is mainly tap water, and it is yellow colored. The dyeing industry, on the other hand, will be very complicated and is not recommended. This is generally to be a professional color sensor, rather than our simple single wavelength color sensor.

  • Q PROBEST PCT-600 On-Line Color Meter Frequently Asked Questions

    A

    What measurement principle does the PCT-600 use, and how accurate is it?

    The PCT-600 adopts the spectrophotometric method, which is widely recognized as an authoritative measurement technology in the industry. It ensures precise color concentration detection by analyzing the optical characteristics of water samples. The measurement accuracy meets the standard of ≤±5% of the measured value (or ±0.15mg/L, whichever is larger), and the resolution reaches 0.01mg/L, fully satisfying the requirements of compliance detection and process optimization.

  • Q What Is a Water Quality PH Sensor?

    A A water pH sensor is an essential device used to measure the acidity or alkalinity of water. The pH scale, ranging from 0 to 14, serves as a numerical indicator of water's chemical nature. A pH value of 7 represents neutrality. Values below 7 signify acidic conditions, while those above 7 indicate alkalinity.

  • Q How about the water monitor instruments market?

    A
    The market is chaotic, competitors abound,
    Pricing matters,
    But quality and service matter more important.
    These busy days have been fulfilling and rewarding.
    Thank you to all our clients for your trust and support.
    Everything is lovely, and mutual pursuit makes it even more wonderful. Grateful to have you.

  • Q Core Question: How to Determine if an SS Water Quality Analyzer Manufacturer is “Excellent”?​

    A
    When selecting SS (Suspended Solids) water quality analyzers, the manufacturer's capabilities directly determine product stability, detection accuracy, and after-sales service quality.

    The following 4 key dimensions help you accurately screen reliable partners:​
    1. Assess Independent R&D Capabilities (Core Screening Criterion)​
    The core of SS water quality analyzers lies in optical detection technology, signal processing algorithms, and environmental adaptability design. Manufacturers lacking independent R&D capabilities often rely on assembling externally sourced core components, compromising product consistency and hindering their ability to address customized demands in complex operating conditions.​
    Signs of an excellent manufacturer: Possesses a professional R&D team (cross-disciplinary talent in optics, electronics, software, water engineering, etc.), demonstrates technical iteration capability (updates algorithms per industry standards), and holds core technology patents (e.g., detection accuracy optimization, anti-interference design).
    PROBEST Advantages: Specializing in optical water quality analysis, PROBEST has assembled a professional R&D team led by senior engineers. It possesses full-chain R&D capabilities spanning core sensor design, algorithm programming, and complete system integration. With multiple technical patents secured, PROBEST delivers customized detection solutions for complex water quality scenarios across diverse industries (municipal sewage, industrial wastewater, aquaculture, etc.).
    2. Assess Product Reliability and Testing Standards
    SS instruments are widely used in critical scenarios like environmental monitoring and industrial process control. Data accuracy and equipment stability directly impact decision-making and compliance. Substandard products can lead to inaccurate monitoring, frequent malfunctions, and increased operational costs.
    Signs of an Excellent Manufacturer: - Implements a comprehensive quality control system - Subjects all products to 100% rigorous pre-shipment testing (e.g., precision calibration, high/low-temperature environmental testing, corrosion resistance testing) - Utilizes premium core materials and components - Possesses long-term operational stability validation data
    PROBEST Advantage: Guided by the core principle of “reliable quality,” all SS water quality analyzers (including the flagship PSS-800 online suspended solids/sludge concentration sensor) undergo 100% factory quality inspection. Core components are sourced from premium industry suppliers, and the housing utilizes corrosion-resistant materials like SUS316L stainless steel. Each unit undergoes thousands of hours of continuous operation testing to ensure stable, precise data output in complex water environments. ​
    3. Evaluate Technical Support and After-Sales Service Capabilities
    Water quality monitoring scenarios are diverse, requiring professional guidance for instrument installation, commissioning, calibration, and ongoing maintenance. Manufacturers lacking comprehensive service support leave users stranded in a “no one to turn to after purchase” predicament.
    Markers of an Excellent Manufacturer: Provides full-cycle services including 24/7 technical consultation, on-site installation and commissioning guidance, periodic calibration reminders, rapid repair response (e.g., expedited spare parts replenishment), and product usage training.
    PROBEST Advantage: Established a dedicated after-sales technical team offering end-to-end support from selection consultation to installation, commissioning, and ongoing maintenance. Provides customized calibration solutions tailored to SS instrument applications. Maintains a spare parts inventory stocked with core components to ensure prompt fault response and minimize user downtime losses.
    4. Evaluate Industry Reputation and Application Case Accumulation
    Market validation serves as a crucial indicator of a manufacturer's capabilities. Products from reputable manufacturers undergo long-term usage verification by numerous industry-leading clients.
    Signs of an Excellent Manufacturer: Possesses extensive industry application cases (e.g., municipal wastewater treatment plants, chemical enterprises, aquaculture bases), receives positive customer feedback and repeat purchases, and holds relevant industry certifications (e.g., ISO quality system certification, environmental product certification).
    PROBEST Advantage: Leveraging independent R&D capabilities and reliable product quality, we have provided SS water quality analysis solutions to hundreds of clients nationwide. Our applications span municipal wastewater, industrial effluent treatment, power generation, aquaculture, and other sectors, earning consistent customer recognition. We hold ISO9001 quality system certification, with products compliant with relevant industry standards.
    II. Summary
    Selecting an outstanding SS water quality analyzer manufacturer hinges on four core elements: “Independent R&D + Reliable Quality + Comprehensive Service + Industry Validation.” As a professional optical water quality analyzer manufacturer, PROBEST centers its technology on a dedicated R&D team, ensures quality through 100% product inspection, and supports users with full-cycle service. Committed to delivering stable, precise, and durable SS water monitoring products, PROBEST stands as a trusted partner.

  • Q Did you know we’ve been a source China OEM developer and maker of Turbidity water quality instruments for over 10 years?

    A
    Did you know we’ve been a source China OEM developer and maker of Turbidity water quality instruments for over 10 years?

    Today we’re spotlighting our star product for drinking water safety: the low range turbidity probe for drinking water analyzers!

    What makes it a top choice for drinking water monitoring?

    First, its rock-solid quality stability — every unit goes through 100% full inspection and calibration before leaving our factory, so you never get off-target turbidity data.

    Second, its specialized low-range detection capability, which is critical for meeting the strict turbidity thresholds of drinking water quality assessments.

    With 10+ years of OEM experience, we can also customize this probe to fit your analyzer’s unique needs. If you’re looking for a reliable turbidity probe to protect drinking water safety, this is your go-to option!

  • Q Did you know we’ve been a source China OEM developer and maker of No3 water quality instruments for over 10 years?

    A
    Today we’re highlighting our rock-solid UVNO3 900 Nitrate Water Quality Monitoring Sensor!
     
    What makes it stand out?

    First, unmatched quality reliability — every sensor goes through 100% full inspection and calibration before delivery, so you never have to worry about inaccurate data.

    Second, its core function: it continuously tracks dissolved nitrate concentrations in water, and it’s perfect for two critical tasks: monitoring sewage aeration tanks and controlling denitrification processes (a must for effective water treatment).
    As a professional online water monitoring meter, it’s a game-changer for water treatment teams.

    With 10+ years of OEM experience, we can also customize this sensor to fit your exact needs. If you want a nitrate monitor that’s built to last and calibrated to perfection, this is your pick!

  • Q Did you know we’ve been a source China OEM developer and manufacturer of water quality analysis instruments for over 10 years?

    A Did you know we’ve been a source China OEM developer and manufacturer of water quality analysis instruments for over 10 years?

    Today we’re showcasing our hot-selling star product: the Online RS485 Digital Water Turbidity Immersion Probe!Boasting a precise measurement range of 0.001–4000 NTU, this ultra-reliable tool is built specifically for wastewater monitoring and industrial process water analysis.

    The RS485 digital interface ensures seamless data integration, while our decade-long OEM manufacturing experience guarantees consistent quality and customizable branding options.    Whether you’re an equipment brand looking for OEM partners or a facility in need of turbidity monitoring, this probe (backed by 10+ years of expertise) is your perfect match!


  • Q What is COD? | PROBEST PUVCOD-900 Solves Water Monitoring Hassles

    A
    Hey everyone, welcome to PROBEST Small Water Talk! Today we’re breaking down a key water quality term: COD (Chemical Oxygen Demand).
    So what is COD? Simply put, it’s the amount of oxygen needed to break down organic stuff in water. Common sources include daily sewage, industrial wastewater, and agricultural fertilizers — and COD levels tell us if water quality is up to par.
    But monitoring COD doesn’t have to be a headache! Our PUVCOD-900 Spectroscopy Organic Matter Online Analyzer has all the features you need to make it easy:
    ✅ No sampling & pre-processing：Just drop the probe in water for real-time, continuous monitoring — no extra steps!
    ✅ Auto-cleaning：Less time maintaining, more time getting data.
    ✅ Eco-friendly：No chemical reagents = zero secondary pollution.
    ✅ Wide range (0–2000mg/L)：Xenon lamp cuts through high suspended solids for accurate readings.
    ✅ Turbidity compensation：Say goodbye to measurement errors from murky water.
    ✅ Fast calibration：Solid-state calibrator works without standard liquids — calibrate in minutes!
    Whether you’re monitoring sewage treatment processes, factory discharge, or surface water, this portable analyzer has you covered.
    COD is a big deal for water ecology — don’t sleep on water quality monitoring. Grab the PROBEST PUVCOD-900 for hassle-free, reliable results!

  • Q PROBEST Small Water Talk: What Exactly is Chemical Oxygen Demand (COD)?

    A
    In the water treatment industry, COD is a core indicator — it refers to the amount of oxygen needed to decompose organic substances in water.Where does water COD come from? Primarily human and animal waste, industrial wastewater, agricultural fertilizers, and more. The level of COD directly reflects organic matter concentration, making it a key benchmark for judging whether water quality meets safety standards.
    To help you accurately monitor COD, we bring you the PROBEST PUVCOD-900 Spectroscopy Organic Matter Online Analyzer — a game-changing tool packed with industry-leading advantages:
    1. No sampling required：The probe can be directly immersed for measurement, skipping tedious sampling and pre-processing steps for fast response and 24/7 continuous monitoring. Its built-in auto-cleaning function also cuts down on maintenance hassle.
    2. Eco-friendly design：No chemical reagents are needed during testing, eliminating the risk of secondary pollution to water bodies.
    3. Wide measurement range：Equipped with a high-penetration xenon lamp light source, it works even in high-suspended-matter water, covering a max range of 0–2000mg/L.
    4. Turbidity compensation：Minimizes interference from water turbidity to ensure precise, reliable data.
    5. Fast calibration：Comes with a solid-state calibrator and matching software, enabling quick calibration without standard liquids.
    Portable, efficient, and reliable, the PUVCOD-900 is ideal for scenarios like:
    • Continuous organic matter monitoring during sewage treatment
    • Real-time inlet/outlet water quality tracking at sewage plants
    • Online monitoring of surface water, industrial wastewater, and fishery discharge
    COD is critical for assessing water organic matter levels — protecting water environments and maintaining ecological balance starts with accurate COD monitoring. Choose PROBEST to safeguard water quality!

  • Q When does the warranty period for the PROBEST PDS-300 Transparency Sensor Water Quality Analyzer begin?

    A
    Q： When does the warranty period for the PROBEST PDS-300 Transparency Sensor Water Quality Analyzer begin? 
    How should malfunctions be handled during the warranty period?
     
    A: The warranty period commences from the date of shipment and lasts for no less than one year. During this period, non-human-induced malfunctions are covered by complimentary repair and replacement services. PROBEST maintains dedicated technical support and maintenance teams.

  • Q Can the manufacturer's monthly production capacity of the PROBEST PDS-300 Transparency Sensor Water Quality Analyzer meet large-scale procurement demands? How is delivery for urgent orders guaranteed?

    A As a specialized manufacturer of water quality analysis instruments, PROBEST has a monthly production capacity of 500 units/sets. Routine large-scale purchases can be delivered within the agreed timeframe.

    For urgent orders, the manufacturer can activate emergency production capacity allocation plans to prioritize order fulfillment.

    Expedited orders can be shipped within as little as 7 business days.

VIDEO

QUICK LINKS

PRODUCT CATEGORY