Learn about BOD water quality online automatic monitor product description
BOD water quality online automatic monitor model: DH3880-BOD product description Manual Massage Collapsible Foot Spa Massager The Manual Massage Foldable Foot Spa Massager is a portable compact device designed to give your feet a relaxing massage experience. Its foldable design makes it easy to store and transport, making it ideal for the frequent traveler. Manual Massage Collapsible Foot Spa Massager,Foot Bath Massager Machine,Electric Heated Foot Spa,Foot Bath Tub Huaian Mimir Electric Appliance Co., LTD , https://www.mmfootspabath.com
The unique design makes this product more accurate, lower failure rate, lower maintenance, lower reagent consumption and higher cost performance than similar products.
1—Select valve component: Select the sampling timing of the reagent, the channel is flexible and diverse, the function is changeable, the maintenance is easy, and the life is long.
2—Small metering components: Accurate metering of reagents through visible photoelectric system overcomes the quantitative error caused by wear of peristaltic pump tubes; at the same time, accurate quantification of trace reagents is achieved, each dose is only 1 ml, which greatly reduces reagent usage. the amount.
3—Injection components: The peristaltic pump is suctioned under negative pressure. There is always an air buffer between the reagent and the pump tube, which avoids the corrosion of the pump tube. At the same time, the reagent mixing is more compact and flexible.
4- seal assembly digestion: high temperature and pressure digestion system, to accelerate the progress of the reaction, volatile corrosion exposures to overcome the corrosive gas system of the device.
5- reagent tubes: The modified polytetrafluoroethylene transparent inlet tube, the diameter larger than 1.5mm, reducing the chance of clogging of the particulate water sample.
Fundamental
Water sample, potassium dichromate digestion solution, silver sulfate solution (silver sulfate as a catalyst added to effectively oxidize linear fatty compounds), and concentrated sulfuric acid mixture heated to 170 ° C, dichromate ion oxidized solution of organic matter The color changes, the analyzer detects the change in the color, and converts the change into a BOD value for output. The amount of dichromate ions consumed is equivalent to the amount of oxidizable organic matter.
Reducing inorganic substances in water samples, such as sub-, sulfide and ferrous ions, react with potassium dichromate, affecting the measurement results, and the amount of potassium dichromate they consume is recorded in the measurement results, so that the measurement results High. In water samples by interfering chloride ions elimination of mercury sulfate, chloride ions can be formed due to the mercury ions is very stable.
Technical specifications
1. Measurement method: dichromate method.
2. Measurement range: 10～2000 mg/L BOD
3. Accuracy: no more than ±10%.
4. Stability: no more than ±10%.
5. Measurement period: The small measurement period of zui is 40 minutes.
6. Sample preparation cycle: time interval (40~9999min can be adjusted arbitrarily) and hourly measurement mode.
7. Calibration period: 0 to 99 days, any interval can be adjusted at any time.
8. Maintenance cycle: usually once a month, about 30 minutes each time.
9. Reagent consumption: less than 0.35 yuan / sample.
10. Output: RS232 or RS485; 1 channel 4~20mA output (optional 2 channel 4~20mA output).
11. Environmental requirements: Recommended temperature +5 ~ 40 ° C; humidity ≤ 85% (no condensation).
12. Power: AC220 ± 10% V, 50 ± 10% Hz, 5A.
13. Size: height 1430 × width 500 × depth 403 (mm).
14. Others: abnormal alarm and power failure will not lose data; touch screen display and command input;
After the abnormal reset and power-off, the instrument automatically discharges the residual reactants in the instrument and automatically resumes working.
BOD water quality online automatic monitor
Electrical device
Use microcontroller and other control components to enhance data processing capabilities, improve stability and anti-interference.
Applications
This method is suitable for chemical oxygen demand and a chloride concentration below the waste water 2.5g / L Cl- in 10 ~ 2000mg / L range, according to the actual requirements, can be applied to a chloride concentration of less than 20g / L Cl- of Waste water.
Massagers typically have multiple massage rollers that apply pressure to different areas of the foot, providing a deep-tissue massage that can help relieve tension and improve circulation. Some models also feature heating and vibration to further enhance the massage experience.
To use the massager, you simply fill it with water and turn it on. The water will heat up and the massage rollers will go into action to provide a soothing massage that will help relax your feet.
Overall, the Manual Massage Foldable Foot Spa Massager is an excellent choice for anyone looking to relieve foot pain and tension in the comfort of their own home.