Water quality measurement equipmentOrganic pollutant monitor (UV meter)
This monitor enables continuous measurement of organic pollutant without measuring delay.
Product Features
This measuring instrument is a continuous type organic contaminants moniter using the ultra-violet (UV) absorption method. UV absorption is optical measurement that does not require chemicals and heating, unlike measurements of conventional organic contamination indexes including COD, BOD, TOD and TOC. Therefore, continuous measurement of organic contaminants can be made without measuring delay. In addition, there is strong correlation with COD.
- Our UV meter is a product that meets standard specifications of ultraviolet photometer (UV meter) stipulated by the Ministry of Land, Infrastructure, Transport and Tourism in Japan.
- This product is not affected by turbidity and contamination of measurement cell. In addition, automatic cleaning of measurement cell is performed by using chemicals at regular intervals. Thus, stable measurement is achieved.
- Batch measurement can be easily performed with 1 to 2 L of sample water.
- Sampling type UV meter and immersion type UV meter are available. Thus, UV meter type can be selected according to the applications.
Specifications
| Item | Continuous organic mud monitor(UV meter) | ||
|---|---|---|---|
| Appearance |  |
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| Type | UVAM-222K | UVD-311 | |
| Measuring object | Complete treatment water in water sewage, complete treatment water and other effluent and process drainage, etc. | Complete treatment water in water sewage, complete treatment water and other effluent and process drainage, etc. | |
| Measuring method | Continuous ultraviolet absorption spectrophotometry (single optical path, two-wavelength type) | Continuous ultraviolet absorption spectrophotometry (single optical path, two-wavelength type) | |
| Sampling type | Direct immersion type | ||
| Measuring range | 0 to 0.5, 1.0, 2.0 Abs (Selectable) | 0 to 0.5 or more 2.5 Abs (COD is 0 to 1 or more: 999.9 mg/L) | |
| Measuring wave length | (UV)254nm (VIS)546nm | (UV)254nm (VIS)546nm | |
| Measurement accuracy | Linearity | Within ±5% of the maximum scale value | Within ±5% of the maximum scale value |
| Reproducibility | Within ±2%FS | Within ±2%FS | |
| Stability | Zero drift ±2%FS/Week Span drift ±2%FS/Week | Zero drift ±2%FS/Week Span drift ±2%FS/Week | |
| Measurement sensitivity | 0.005Abs | 0.005Abs | |
| Response speed | 90% response: Within 30 seconds | 90% response: Within 30 seconds | |
| Output signal | DC4 to 20 mA (maximum load resistance: 600 Ω) | DC4 to 20 mA (maximum load resistance: 600 Ω) | |
| Contact output | Classification | Lack of sample water, disconnected light source, electric leakage, power outage, during maintenance and during cleaning | Selecting any 3 points from disconnection of light source, exceeding FS (full-scale), falling below FS, washer error, exceeding the upper limit, falling below the lower limit, detector error, collective error of meters |
| Capacity | No-voltage a contact (DC24 V 1 A) | No-voltage a contact (AC100 V 0.5 A) | |
| Sample water condition | Temperature | 0 to 40°C (no freezing) | 0 to 40°C (no freezing) |
| Pressure/ withstanding pressure | - | 0.1MPa | |
| Flow rate | 2-10L/min | - | |
| Surrounding environmental condition | Temperature | 0-40°C | 0-40°C |
| Humidity | 15 to 85%RH or less | 45 to 85%RH or less | |
| Power source | AC100V±10% 50/60Hz 100VA | AC100V±10% 50/60Hz 100VA | |
| Weight | Transformer | Approx. 120 kg (stand panel) | Approx. 7 kg (single unit) |
| Detector | - | Approx. 5 kg | |