1、 The Importance of Temperature Control

The online monitoring station for wastewater is a core facility to ensure the accuracy of water quality data, and its environmental temperature directly affects the stability of monitoring instruments, sensor accuracy, and reagent storage effectiveness. Excessive or insufficient temperature may cause equipment malfunction, data drift, or calibration failure, therefore strict temperature control standards must be implemented.

2、 Specific temperature requirements

standard range

Conventional monitoring equipment: It is recommended to maintain it at 15-30 ℃ to avoid condensation or high temperature that may cause electronic component aging.

Precision instruments (such as TOC analyzer, gas chromatography): need to be controlled at 20-25 ℃± 2 ℃ to ensure stable reaction conditions.

Reagent storage area: Set according to the characteristics of the reagents, usually stored at 4-10 ℃ (refrigerated) or at room temperature and away from light.

Response to extreme conditions

Winter low temperature areas: Anti freezing heating devices should be equipped to ensure a room temperature of ≥ 10 ℃ and prevent pipeline freezing.

Summer high temperature areas: Control the temperature to ≤ 35 ℃ through air conditioning or ventilation systems to avoid instrument overheating and shutdown.

3、 Temperature management measures

hardware configuration

Install high-precision temperature and humidity sensors, monitor in real-time, and link alarm systems.

Adopting industrial grade air conditioning (with power-off self start function) and backup power supply to ensure uninterrupted temperature control.

routine maintenance

Record temperature data daily and calibrate temperature control equipment monthly.

Regularly check the sealing of doors and windows to prevent external environmental interference.

emergency response

When the temperature exceeds the limit, an automatic sound and light alarm will be triggered, and the backup temperature control equipment will be activated.

Abnormal data should be labeled with temperature interference factors, and environmental recovery standards should be confirmed before re monitoring.

4、 Standard basis

Referring to the "HJ 353-2019 Technical Specification for Installation of Online Monitoring System for Water Pollution Sources" and the technical manual of the instrument manufacturer, it is clarified that the station building must meet the three elements of "constant temperature, moisture-proof, and dust-proof".

5、 Precautions

Avoid direct air conditioning on instruments to prevent local temperature differences from affecting measurements.

The power system needs to be independently grounded to reduce electromagnetic interference from temperature control equipment.

Through scientific temperature control and strict management, the effectiveness of monitoring data can be significantly improved, providing reliable basis for environmental supervision.