Features
- 01 The dissolved oxygen analyzer electrode has a short response time, which is convenient for measuring sewage water samples with high oxygen content.
- 02 The dissolved oxygen analyzer adopts the latest single chip microcomputer technology, high performance and low power consumption.
- 03 SMD technology and integrated design, high-integration circuit design is stable and durable.
- 04 24-bit A/D signal acquisition, high-precision measurement, accurate and reliable.
- 05 Data circulation storage function, automatically clearing overflow data, simple operation and convenient query.
- 06 5.0-inch touch color LCD, Chinese display, easy to operate.
working principle
Working principle of desktop dissolved oxygen meter TP351
- The DO continuous determination method is the diaphragm electrode method. The diaphragm is made of polytetrafluoroethylene fiber, polyethylene, etc., platinum is used as the positive electrode, aluminum and lead are used as the negative electrode, the two metal electrodes are immersed in the electrolyte solution, and the electrodes and the electrolyte solution are placed in a small chamber with an oxygen semipermeable membrane. The current measurement circuit is connected, and the molecular oxygen in the water diffuses through the diaphragm to the electrode surface, and an electrode reaction occurs. When the electrode parameters are constant and at a certain temperature, the stabilized diffusion current is proportional to the oxygen concentration in the water sample.
- Dissolved oxygen analyzer TP350 is Laboratory water quality analyzer , suitable for industry, electricity, agriculture, medicine, food, scientific research and environmental protection and other fields.
Technical indicators
| show | 5.0-inch touch color LCD, Chinese display |
| Measuring range | (0.00～20.00)mg/L |
| Accuracy | ±1.5%FS |
| Resolution | 0.01mg/L |
| Repeatability | ≤1% |
| Response time | T90<5min（25℃） |
| Ambient temperature | (5～45)℃ |
| Water sample temperature | (5～45)℃ |
| environment humidity | ≤85%RH(no condensation) |
| power supply | AC (85～265)V Frequency (45～65)Hz |
| power | ≤5W |
| Dimensions | 200mm×200mm×85mm |
| weight | 2.1kg |
Ordering Guide
- Accessories Guide
Dissolved oxygen electrode, electrode filling solution, electrode membrane head
- ●Precautions
1. The whole measuring system has a long response time, the membrane is broken, the current in the oxygen-free medium increases, etc., and the membrane or electrolyte needs to be replaced. Repolarization and calibration are required after each membrane or electrolyte replacement.
2. When the temperature of the measured water sample is high, cooling measures should be taken to make it meet the instrument requirements. If measuring in boiler feed water, it should generally be cooled with a water cooler first.
3. When the water supply is cut off or the dissolved oxygen analyzer is not used for a long time, the electrode should be removed in time and the protective cap should be put on.
