The problem

Water-efficiency tests demand strict water quality, pressure and temperature; mains supply drifts with seasons so batches cannot be compared, and high-flow tests stall halfway when the supply runs out.

Capability

Thermostatic constant-pressure supply system for purifier water-efficiency, life, desalination and recovery tests. Twin 2.0m3 SS304 insulated tanks supplying alternately or together, 1m3 effective volume; outlet pressure 0.05-1.0MPa with 0.01MPa resolution and 0.5 percent accuracy, set-point fluctuation not over 3 percent; one outlet delivering up to 40L/min for over one hour with refill interval under one hour; water temperature 5-35C settable, fluctuation under 1C, drift within plus/minus 1C per 2h, 0.1C display; scroll-compressor cooling with electric heating balanced by PID; VFD plus multistage booster pump and surge tank for constant pressure; high/low level monitoring, overflow protection and over-temperature cut-out; fully insulated piping (end-to-end difference within plus/minus 0.5C). PLC with touch screen, Pt100 class A sensors, imported pressure/level transmitters and Keyence flowmeters. AC380V 50Hz.

Applicable standards

Water supply for water-efficiency tests per GB 34914-2017 (efficiency limits and grades of water purifiers)

Key specifications

• 用途：净水器水效等级/整机寿命/脱盐率回收率测试的恒温恒压供水
• 水箱：2×2.0m³不锈钢304保温水箱，交替+同时供水，供水有效容积1m³
• 压力：0.05~1.0MPa可设，分辨率0.01MPa，精度0.5%，波动≤3%
• 流量：一路出水最大40L/min，持续≥1小时，重新供水间隔<1小时
• 温度：5~35℃可设，波动<1℃，稳定变化率≤±1℃/2h，显示0.1℃
• 冷热源：涡旋压缩机制冷+电加热PID自动平衡，双水箱分时切换
• 恒压：变频器+立式多级增压泵+稳压罐闭环
• 保护：高低水位监测、溢流口、超温报警断电
• 保温：管路全程保温，末端温差≤±0.5℃
• 控制：PLC+触摸屏；Pt100 A级/进口压力水位变送器/基恩士流量计

Applications

Water-efficiency laboratories per GB 34914; feed-water for purifier makers efficiency and life test benches; government testing of water-treatment products

About the manufacturer

Guangdong Endurance Electronic Equipment Co., Ltd provides non-standard customization, drawing confirmation, factory acceptance, on-site installation and commissioning, operation training and lifetime technical service; 12-month warranty and lifetime spare parts supply. Tel: 0760-88500902 / 13416787649. Web: en.zsnaili.com.