
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.
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 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 in stagnant water by forcibly providing flow velocity to the electrode. (*1)
- The electrode is a fluorescent type with tip detection 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.
- Digital communication between the transformer and detector makes it less susceptible to noise interference.
- As the display is in Japanese, its guidances are easy to read.
*1: When using the bubble cleaning holder
Specifications
Item | DO meter | ||
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Appearance | ![]() |
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Type | DOL-750 | ||
Measuring object | Dissolved oxygen (DO) | ||
Measuring method | Fluorescent type | ||
Maximum scale | 3 to 20 mg/L (FS) (Setting is possible in units of 1 mg/L.) |
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Repeatability | Within ±2%FS | ||
Response speed | 90% response Approximately 60 seconds (25°C) | ||
Temperature of measurement liquid | 0 to 40°C (no freezing) | ||
Ambient environmental conditions | Temperature: -10 to 50°C Humidity: 90%RH or less | ||
Output signal | DC4 to 20 mA (maximum load resistance: 600 Ω, isolated output) | ||
Contact output | Classification | (Upper and lower limit alarm, during maintenance, abnormality of meter) | |
Capacity | AC100V 0.5A | ||
Power source | AC100V±10% 50/60 Hz Single phase Approx. 20 VA |
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Weight | Transformer | Approx. 6 kg | |
Detector | Approx. 10 kg (at L=3000, including 7 kg cleaning unit) | ||
Required air volume | 20 to 40 L/min (at the time of immersion*) | ||
Required flow rate | None |
- * Air source is required separately.