PRE721-B Dual-channel Water Quality Controller
PRE721-B Dual-channel Water Quality Controller
The PRE721-B is a sophisticated online controller designed for monitoring multiple water quality parameters. Leveraging extensive expertise in design and production, it can measure pH, dissolved oxygen, conductivity, salinity, turbidity, TSS, COD, ammonia nitrogen, chroma, and more.
PRE721-B Dual-channel Water Quality Controller
PRE721-B Dual-channel Water Quality Controller
The online dual-channel water quality controller is an advanced instrument for monitoring water quality, drawing on extensive experience in design, development, and production. It is capable of monitoring various water quality parameters, including pH, dissolved oxygen, conductivity, salinity, turbidity, TSS, COD, Ammonia Nitrogen, Chroma, etc. Users can select any two parameters for monitoring. This versatile product finds wide applications in aquaculture, tap water quality monitoring, surface water quality monitoring, marine environment monitoring, and other related industries.
Features
- Digital and two-channel analog isolated output: the controller provides RS485 external communication interface, with standard MODBUS communication protocol; at the same time, the instrument has two-channel analog signal outputs, which can be set freely by the user; the communication anti- interference ability is strong
- Two-channel relay control: the instrument provides two-channel relay control, which can independently set the alarm or cleaning function. Meanwhile,the control mode can be customized according to customer needs
- Easy maintenance: customized language and menu operation interface can be provided according to customer needs
- Waterproof and dustproof design: protection grade is IP65, suitable for outdoor use
- Touch screen LCD display: it adopts 4.3" touch screen display, easy to operate, can display multiple parameters at the same time, and the display is beautiful
- Communication method: all digital communication between sensor and controller.
- Measurement parameters can be expanded: the controller can connect two water quality sensors, and the measurement of customized non-water quality parameters are available (for example: pressure, liquid level, flow, etc., the sensor needs to support the 485 communication protocol).
Technical Specifications
- Power supply: AC220V or DC12V is optional (need to specify when ordering), power consumption is less than 10W (except customized products)
- Operating and storage temperature: 0~60℃, humidity<95%RH, no condensation.
- Two-channel 4~20mA analog output, customers can set output parameters according to their needs
- One channel RS485 digital output interface, MODBUS RTU protocol communication or external wireless transmission module, support WIFI communication (customized).
- Two-channel relay output, 250V, 5A. Can independently set the cleaning or alarm function
- Support up to 2 digital sensors
- 4.3-inch color touch screen with resolution of 480 × 272
- Quick plug connector is customizable
