KPH601 Online PH Sensor Signal Output: RS-485 (Modbus/RTU Protocol)
1.Industrial pH measurement
A retractable housing has great advantages when installed literally
in a pipe-line. The pH electrode may be checked, cleaned,
calibrated and
replaced without interrupting the process. When installed in a
pipe-line, no bypass valves are necessary. The possibility of
withdrawing the
electrode during the process helps to ensure a correct pH
measurement. Retractable pH housings meet the requirements for an
automatic
pH measuring system. Probes without a retractable function enable
the maintenance of an electrode only in combination with an
interruption of
the process, emptying of the vessel, etc. in pressurized
systems.After having clarified the installation possibilities, the
process determines the choice of suitable electrode and housing.
Both components of the pH electrode assembly should suit the
process requirements.
Electrodes with a liquid electrolyte must be operated with an
overpressure, preventing the measuring solution from entering into
the
reference electrolyte. The overpressure also ensures a constant
cleaning of the junction. Housings for liquid electrolyte
electrodes
therefore posses a pressure chamber and a pressure indicator. Using
this type of pH electrode assembly requires
control of the overpressure and the periodic inspection of the
level of the reference electrolyte. Because of their ability to be
refilled, liquid
filled electrodes have a long life expectancy if maintained
correctly.Also, in the case of difficult measurements a special
electrolyte may be used.
Electrodes with gel or polymer electrolytes require very little
maintenance. Checking the overpressure and the electrolyte level is
not necessary. Polymer electrolyte electrodes are pressure
resistant and do not need a classical junction due to their special
construction; therefore, they are less sensitive to contamination.
Electrodes with a gel electrolyte may be supplied with an
overpressure. Since their life expectancy is generally good, a gel
or polymer electrode is often the most economical alternative due
to their low maintenance costs. In addition, the probe can be kept
small and simple, since no pressure chamber is needed. The probe in
the probe housing has to have the same corrosion resistance as the
reactor. In addition to stainless steel, alloyed materials (e.g.
Hastelloy) and plastics (e.g. PVDF) are used.
2.Signal processing and environmental influences
The combination electrode provides a potential which is specific
for the pH value. This signal has a high resistance. In order to
represent it as a pH value, a special transmitter is needed. The
potential of the pH electrode is also influenced by the
temperature. Therefore, the pH transmitter offers the possibility
of manual or automatic temperature compensation.
3.Technical Specifications
| Model | KPH601 |
| Measuring Range | 0～14pH |
| Resolution | 0.01pH |
| Accuracy | ±0.1pH |
| Working Temperature | 0～65℃ |
| Working Pressure | ＜0.2MPa |
| Temperature Compensation | Auto temperature compensation (NTC) |
| Power Supply | 12～24VDC ±10% |
| Signal Output | RS-485(Modbus/RTU) |
| Wetted Material | POM |
| Mounting Method | Immersion mounting, 3/4 NPT thread |
| Cable Length | 5 meters, other lengths can be customized |
| Calibration | Two-point calibration |
| Power Consumption | ＜0.3W@12V |
| Protection Grade | IP68 |
4.Dimensional Drawing
Note:The sensor connector is M16-5 core waterproof joint male head.
5.Installation
Note: The sensor should not be installed upside down or
horizontally when installed, at least at an angle of 15 degrees or
more.
Contact Us
Website www.kacise.com
Phone +86-17719566736
Email sales@kacise.com
Location Tangyan South Road, High-tech Zone, Xi'an City, Shaanxi
Province, China
