Oceanographic Equipment

Water Quality Monitoring Equipment TSK Tsurumi Seiki Co., Ltd.



Water Quality Monitoring Equipment

DWQM(Dam Water Quality Monitor System)

 ・ Equipped with rotary cleaning mechanism (brushes and wipers) to remove both organic and inorganic fouling that occurs on critical sensor surfaces per measurement, consistent and reliable data can be obtained.

 ・ The storage container is made from stainless steel.

 ・ As an optional extra, chlorophyll and UV sensors are also available (Stored in different containers).




Turbidity Water Temperature pH DO Conductivity Water Depth Chlorophyll a Sensor
Range 0 to 2000FTU -10 to +40℃ 2 to 12pH 0 to 20mg/L 0 to 100mS/m 0 to 50m 0200ug/L
Accuracy +/- 2% (F.S.) +/- 0.2℃ +/- 0.2pH +/- 0.4mg/L +/- 3% (F.S.) +/- 0.2m
Method Backscattered
Integrating Sphere

Platinum Resistance Temperature Detector

Glass Electrode       Diaphragm Electrode
Electromagnetic Induction

Pressure Sensor(Semiconductor strain gage)





In dam lakes…

 ・ It is possible to make long term observations anywhere on the lake when the system is mounted on float and buoy.

 ・ From the field to the water quality data processor, the obtained data is transmitted by wired (optical cable, etc.) or wireless (professional-use TLM, specified low power radio, Wi-Fi, etc.) connections.      


         ブイタイプ       Solar-powered buoy

 ・ The water quality data processor shows the collected data on a display in an easy-to-understand manner.



鉛直分布図    Vertical profile data


コンター図    Contour figure


      トレンド図   trend figure



 ・ Fixing guide rail wire to dam’s intake tower, the electric winch is used to raise and lower KW-2 automatically based on predetermined sequences.

 ・ The approximate time is required within 3minutes per measurement (per layer).

 ■In rivers

 ・ Placing a sensor in a guard pipe, data is collected by control panel.

   Example of protection pipe  


Solar-powered control panel (with built-in simplified radio)


■Portable type
  • It can be loaded on boat and measurement at arbitary places can be done. Because it is possible to change the measurement point, observations at many positions can be done in a short time and utilization range of the data spreads.
  • As device has function to transmit data to external device so after returning shore, data processing can be done using computer.
  • Power supply can be AC100V or DC12V but conditions of usage can not be selected.ポータブル

Products TOP

Page Top

T.S.K manufactures and sells oceanographic observation equipments
as well as water quality monitors for dams and rivers.