KPS-400 Multiparameter Water Quality Sensor
The Apure KPS-400 integrates selected digital water-quality sensors into a compatible monitoring system. Confirm the ordered sensor ports, directly measured channels, calculated parameters and receiving-device interface together.
- Easy to operate
- Widely used
- Automation
The KPS-400 specification depends on the installed probes and receiving system. Sensor-port count and reported-parameter count are different: temperature channels and calculated values can add reported parameters without adding a separate probe.
Ports, channels and reported values
The existing descriptions refer to up to four digital sensors with five parameters and to six parameters including temperature. Confirm the exact port/channel map for the ordered version; these references do not establish that every listed analyte is measured simultaneously.
Configure the installed sensors
- Select from the listed DO, pH/ORP, conductivity/salinity, turbidity and ammonia-nitrogen options using the actual probe models and interfaces. Record which values are direct measurements and which use a calculation.
- For each channel, specify range, full unit, accuracy basis, process temperature/pressure and compensation requirements. The pH/ORP controller-style table below does not supply the specifications of the other sensor options.
- Match materials, cable, mounting, immersion and access for service. Automatic cleaning, where included, does not remove all fouling or replace calibration checks.
- Commission and independently verify each probe using its own procedure. Do not apply a pH electrode’s conditioning or maintenance instructions to DO or optical sensors.
Digital integration and component boundaries
For the listed RS485 Modbus RTU connection, confirm the supplied power, wiring, supported registers, units, serial settings and receiving software. A mobile or computer display requires the appropriate logger/gateway and software; RS485 alone does not provide wireless access.
The existing optional pH-probe reference cites 100 KPa (1 Bar), a life-related statement of more than 20 months and a 3/4-inch NPT connection. Verify those claims for the exact pH probe; they do not rate the complete KPS-400 assembly’s process pressure, service life or mounting. Confirm the supplied IP68 installation conditions and connector ratings.
The existing pH/ORP values, output entries and panel cut-out dimensions below are component-style references. Confirm their relationship to the ordered controller and complete assembly. They do not establish ranges for all optional sensors, the external panel/cabinet dimensions, or an approved sample temperature for the whole system.
| Brand | Apure |
|---|---|
| Model | KPS-400 |
| pH/ORP reference range | PH: 0~14.00pH ORP: -1999 ~ 1999 mV |
| pH/ORP reference resolution | PH: 0.01PH ORP:1mV |
| pH/ORP reference accuracy | PH: 1%FS ORP:1%FS |
| Reference temperature entry | 0~135℃ |
| Controller output reference | Two 4-20mA outputs for pH and ORP |
| Controller relay reference | Two limited ON/OFF contact output(Relay) |
| Controller dimensions reference | 144×144×120mm |
| Controller cut-out reference | 138×138mm |
