Audited Supplier
YRUN-SP7 Portable Multi-parameter Water Quality Tester. The instrument uses optical and electrode methods (pH, conductivity and dissolved oxygen) that users can combine different parameters freely as needed. Widely applicable to the determination of drinking water, surface water and sewage.
Functional Features
1. Automatic wavelength selection when measuring samples, eliminating the need for calibration.
2. Large LCD screen for easy and intuitive operation.
3. Portable for convenient on-site detection.
4. Can store 200 factory curves, and up to 100,000 data records.
5. Users can add and calibrate their own curves, in addition to factory presets, and store them on the device.
6. One-key recovery function to restore factory and user curve data in case of accidental loss.
7. Cold light source with a narrow-band interference optical system for excellent optical stability.
Data protection in case of power failure.
8. Rechargeable lithium battery power supply.
9. Recording and printing functions.
10. USB interface for data transfer to a computer.
Technical Parameters
| Measurement parameters | Sulphide |
| Wavelength | 340nm, 420nm, 440nm, 470nm, 520nm, 540nm, 560nm, 610nm, 630nm, 660nm, 680nm, 700nm (Any wavelength within the above range can be customized) |
| Indication error | ≤±5 % |
| Repeatability | ≤2% |
| Optical stability | Absorbance drift ≤0 .002A/20min |
| Dimension | 425mm×336mm×126mm |
| Power | 8.5W |
| Weight | 4.5kg |
| Working environment | (1) Ambient temperature: 5~40ºC (2) Relative humidity: ≤85% (3) Power supply: AC 220 (165V-240V) (4) No significant vibration and electromagnetic interference, avoid direct sunlight. |
Measurement items
| No. | Measurement item | Measuring range | Unit | Indication error |
| 1 | Sulfide | 0.00-1.00 | mg/L | 5%(F.S) |
