Develop and design based on the customer's on-site layout and proposed requirements. Suitable for testing water in water purifiers, providing a continuous constant temperature and pressure test water temperature and pressure for the overall energy efficiency of the water purifier. Real time monitoring and control of water temperature, inlet, outlet, water level, output water pressure, etc. of each water tank through self-developed testing system+7-inch touch screen

-GB/T 35937-2018 Performance Testing Methods for Household and Similar Drinking Water Treatment Devices

-GB 34914-2021 Water Efficiency Limits and Grades for Water Purifiers

-T/SPEMF 0058-2025 Operating Procedures for Adding Standards Test of Drinking Water Treatment Equipment

-GB 5749-2022 Sanitary Standards for Drinking Water

1. Constant temperature system

-Water temperature range: adjustable from 5 to 65 ℃, commonly used at 25 ± 1 ℃

-Control accuracy: ± 0.1 ℃

-Water tank: SUS304, capacity ≥ 1000L, with mixing/circulation/water level protection

2. Constant pressure water supply

-Pressure range: 0.1-1.2MPa, commonly used 0.24 ± 0.02MPa

-Control accuracy: 0.5 level, frequency conversion and voltage stabilization, multi station independent voltage control

-Flow rate: adjustable from 0 to 130L/min, capable of simulating rated/maximum flow rates

3. Basic water quality

-Pure water: conductivity<10 μ S/cm, TDS<5mg/L

-Additive base: total hardness 250 ± 20mg/L, TDS500 ± 50mg/L, pH 7.0-7.5

4. Labeling system

-Multi agent automatic dosing

-Concentration range: 3-5 times the limit of GB 5749, with an accuracy of ± 5%

5. Environment and Power Supply

-Environment: Temperature 15-35 ℃, humidity 45% -75%

-Power supply: AC220V/380V 50Hz, power approximately 12kW

6. Data collection

-Real time monitoring: pressure, temperature, flow rate, conductivity TDS、pH、 Spiked concentration

-Accuracy: Pressure level 0.25, conductivity ± 1%, pH ± 0.05

-Output: Real time curves, data reports, automatic storage/traceability

Test content

1. Constant temperature and pressure stability test

-Constant pressure stability: Continuous operation at rated pressure, pressure fluctuation ≤ ± 0.02MPa, no leakage

-Constant temperature stability: At the set temperature, the water temperature fluctuates by ≤± 0.5 ℃ without stratification

-Flow stability: Under rated flow, the fluctuation is ≤± 2%, meeting the test repeatability requirements

2. Labeling purification performance testing

-Conventional pollutant labeling:

-Organic compounds: oxygen consumption, trichloromethane, carbon tetrachloride

-Heavy metals: lead, cadmium, arsenic, mercury

-Microorganisms: total coliforms, total bacterial count

-Disinfection by-products: residual chlorine, chlorite, bromate

-Sampling nodes: Initial water supply, 1/4, 2/4, 3/4, 4/4 week end, a total of 5 batches of water samples

-Judgment criteria:

-3x limit: removal rate ≥ 60%

-5 times the limit: removal rate ≥ 80%

-Activated carbon: oxygen consumption removal rate ≥ 25%

-New pollutant labeling

- PFOS/PFOA、 Microplastics, antibiotics, environmental hormones, validate specialized removal capabilities

-Validation of spiked recovery rate:

-Recovery rate of 90% to 110%, ensuring accurate water distribution and testing