Features
- 01 The electrode has a short response time, which is convenient for measuring sewage samples with high oxygen content.
- 02 The dissolved oxygen analyzer adopts SMD technology and integrated design, and the circuit design is stable and durable.
- 03 Advanced MCU technology, high performance and low power consumption.
- 04 24-bit A/D signal acquisition, high measurement precision, accurate and reliable.
- 05 Standard output signal types are optional and the alarm relay can be set arbitrarily.
- 06 Data cycle storage function, automatically clear overflow data, simple operation, convenient query, power-off data storage for more than 10 years.
- 07 Chinese menu operation, easy to understand, quick and convenient to operate.
working principle
Working principle of dissolved oxygen analyzer TP151
- 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.
- Connect the current measurement circuit, 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. The dissolved oxygen analyzer TP151 is an online water quality monitor .
Technical indicators
| show | 128×64 Chinese LCD display, Chinese operation |
| Measuring range | （0.00～20.00 ）mg/L |
| Resolution | 0.01mg/L |
| Repeatability | ≤1% |
| Accuracy | ±1.5%FS |
| Response time | T90 <5min（25℃） |
| Temperature compensation range | (0 ～ 60.0)℃ |
| Water sample temperature | (5 ～ 60)℃ |
| Ambient temperature | (5 ～ 45)℃ |
| environment humidity | ≤85%RH (no condensation) |
| Storage and transportation temperature | (-25～55)℃ (electrode should be higher than 0℃) |
| Protection level | IP65 |
| Current output | (0～10)mA, (0～20)mA, (4～20)mA optional load <750Ω |
| Relay | 2 normally open points can be set arbitrarily AC220V/3A DC30V/3A |
| Power-off save | >10 years |
| Power supply | AC (85 ~ 265) V frequency (45 ~ 65) Hz |
| power | ≤15W |
| Dimensions | 145mm×120mm×150mm |
| Hole Size | 138mm×138mm |
| weight | 0.64kg |
Ordering Guide
●Accessories Guide
Dissolved oxygen membrane head/electrode filling liquid/dissolved oxygen electrode
●Secondary instrument installation method
Open hole type/wall mounted type/rack mounted type
●Electrode installation method
Flow-through/immersion/flange/special installation methods, negotiated design
