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  • Product Name: RK500-04 Dissolved Oxygen Sensor

RK500-04 Dissolved Oxygen(DO) Sensor design based on the principle of fluorescence and high performance through oxygen membrane, with short response time, measurement accuracy, stable performance, etc.It can be widely used in chemical fertilizer, metallurgy, environmental protection water treatment engineering, pharmaceutical, biochemical, food, aquaculture and water such as continuous monitoring of dissolved oxygen in the solution.


  * On-line & real-time monitoring
  * With temperature compensation
  * High accuracy
  * Simple operation and high reliability
  * No external module, a whole design
  * Long service life
  * Dissolved oxygen and temperature measurement at the same time(RS485)
  * No requirement for liquid velocity
  * Not affected by ions
  * Environmental protection
  * Water quality monitoring 
  * Aquaculture 
  * Clean in place(CIP)
  * Sewage treatment
  * Industrial wastewater treatment
Item Technical Specifiaction
DO Temperature
Range 0-20mg/L 0-60°C
Accuracy ±0.5%FS  ±0.5°C
Resolution 0.01mg/L  0.1°C
Supply 12VDC,24VDC
Temperature compensation 0-60°C
Output RS485
Measuring principle  Fluorescence
Maintenance  Every 1year to replace fluorescent cap
Response time <60s
Pressure Resistance 0.3MPa
Power consumption  <0.4W
Operating Temperature  0-+80℃
Probe material

General: 316L

For seawater: titanium alloy

Dimension Φ16*125mm
Weight(probe) 1.5kg
Ingress Protection  IP68
Storage 10-60℃@20%-90%RH
Cable length 10m default, other length customizable


Remark Series Type Suppy Output Type Cable length  
      A       5v
      C       12-24V
      D       Other
        A     4-20mA
        B     0-5V
        C     RS485
        X     Other
          S   Split type
          I   Integral type
            2000  Unit:mm
            ... Unit:mm

Example: RK500-04CAS2000 Supply:12-24V, Output:4-20mA, Split type, Cable length:2m.