Description
Method
UV254:
The determination of dissolved organic substances is performed photometrically at 254 nm. To minimize the inteference of the sample turbidity or other matrix effects a second measurement at 590 nm is taken. The compensated absorbance is proportional to the concentration of dissolved organic substances that absorbs in the UV region.
Features
| Measured parameter | UV254 |
| Wavelength | 254 nm |
| Demineralized water | Not required |
| Min. analysis time | 1 minutes |
COD:
Method
The determination of dissolved organic substances is performed photometrically at 254 nm. To minimize the inteference of the sample turbidity or other matrix effects a second measurement at 590 nm is taken. The compensated absorbance is proportional to the concentration of dissolved organic substances that absorbs in the UV region. This measurement is often correlable with the COD value of the sample.
Features
| Measured parameter | COD |
| Wavelength | 254 nm |
| Demineralized water | Not required |
| Min. analysis time | 1 minutes |
Technical Specifications
| Model | 3S-UV254 |
| Sampling Mode | Batch, with freely settable frequency. |
| Sample | Pressure: Atmospheric Temperature: 5 ‐ 45°C (41 ‐ 113°F) Flow Rate: 80 to 500 mL/min Connection: 6 mm (¼-in.) |
| Drain | Pressure-free drain Connection: 12 mm (½-in.) |
| Input Streams | 2 |
| Material | Epoxy-coated stainless steel AISI 304 |
| Dimensions (H x W x D) | 604 x 380 x 210 mm (23.6 x 14.8 x 8.2 in) |
| Weight | 20 kg (44 lbs) |
| Power Supply | Input Voltage: 115 VAC,230 VAC Power consumption: max. 80 W |
| Output signals | 2 x 4-20 mA analog outputs Modbus via RS485,Ethernet |
| Alarms | 2 SPDT programmable voltage-free relays |
| Digital Input | None, Online, Start Extra, Skip Idle, Emergency Stop |
| Ambient Temperature | 5 – 45 °C (41 – 113 °F) |
| Ambient Humidity | 10 – 90 % RH (non-condensing) |
| Protection Grade | IP54 (indoor only, outdoor use possible with external cabinet, not included) |
