DO meter DOP-511511F

Water quality measurement equipmentDissolved oxygen meter(DO meter)

This meter is optimal for air volume control and management for bioreactor vessel . This meter can be applied to float type detectors in the river basin.

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Product Features

Dissolved oxygen (DO) is necessary for many microbes living in water. Therefore, it is very important to control concentration of dissolved oxygen properly for artificial facilities including sewerage treatment facilities and fish farms. In addition, dissolved oxygen is an effective index for pollution levels in rivers, lakes and marshes.
This meter is a latest high functional and high performance model of our bubble cleaning type DO meter with our expertise developed for many years. This meter can be applied to float type detectors in the river basin.

  • This meter enables measurement during cleaning because it has a little impact from bubble cleaning. (*1)
  • Since the continuous cleaning is possible, frequency of maintenance can be reduced. (*1)
  • Stable measurement can be performed even with stagnant water by keeping the clean electrode surface. This is made possible by blowing the external air around the electrode surface or by its subsequent water stream on the surface. (*1)
  • Simple configuration and easy maintenance are achieved with cleaning by keeping the electroe surface clean by above external air blow or its subsequent water stream. (*2)
  • The electrode is of edge detection type polarograph electrodes for easy maintenance.
  • Various correction processes are available. (Altitude correction, chloride ion correction, etc.)
  • Various parameters can be changed.
  • Settings are easy with interactive mode.
  • The equipment conditions can be checked easily with the built-in self-diagnostic function.
  • As the display is in Japanese, its guidances are easy to read.

    *1: When using the bubble cleaning holder
    *2: When using the floating type holder3

Specifications

Item DO計
Type DOP-511 DOP-511F
Measuring object Dissolved oxygen (DO) Dissolved oxygen (DO)
Measuring method Diaphragm polarograph type Diaphragm polarograph type
Maximum scale 3 to 20 mg/L(FS)
(Setting is possible in units of 1 mg/L.)
3 to 20 mg/L(FS)
(Setting is possible in units of 1 mg/L.)
Measurement accuracy Repeatability ±0.1mg/L and less ±0.1mg/L and less
Response speed 90% response Approximately 60 seconds (25°C) 90% response Approximately 60 seconds (25°C)
Temperature of measurement liquid 0 to 40°C (no freezing) 0 to 40°C (no freezing)
Output signal DC4 to 20 mA (maximum load resistance: 600 Ω, isolated output) DC4 to 20 mA (maximum load resistance: 600 Ω, isolated output)
Contact output Classification (Upper and lower limit alarm, during maintenance, abnormality of meter) (Upper and lower limit alarm, during maintenance, abnormality of meter)
Capacity AC100 0.5A、DC24V 0.5A AC100 0.5A、DC24V 0.5A
Surrounding environmental condition Temperature -5 - 45°C -5 - 45°C
Humidity 90%RH or less 90%RH or less
Power source AC100 V±10% 50/60 Hz Single phase 10 VA AC100 V±10% 50/60 Hz Single phase 10 VA
Weight Transformer part Approximately 7 kg Approximately 7 kg
Transformer part Approx. 7 kg Approx. 7 kg
Required air volume 20 to 40 L/min (at the time of immersion*) None
Required flow rate None 20 cm/s or more
  • * Air source is required separately.
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