Product Introduction

The hardware part of this product is composed of patented micro differential pressure precise measurement sensors and smart building compliant sensorsThe DT301 intelligent controller is composed of RS485 bus protocol output, and the software part is based on MCU embedded algorithm as the core, which realizes the preset value setting of gradient pressure difference, data acquisition and alarm of various environmental parameters, display of air exchange rate and monitoring of air supply volume, and provides two-level password protection. It is mainly used in the combination of epidemic prevention and positive and negative pressure wards of comprehensive hospitals, and can also be used in various applications such as biosafety laboratories.

Control principle

The micro pressure sensor collects real-time pressure difference data and transmits it to the main control unit. The main control unit controls the air valve actuator and enhances the fan to achieve air exchange rate and air supply volume in real time according to preset parameters. It establishes a gradient pressure difference indoors and perfectly achieves the isolation effect of negative pressure wards, effectively preventing cross infection of patients and protecting medical staff.

Product advantages

Solved the pain points of large pressure fluctuations, lack of comfort, and high energy consumption in traditional negative pressure wards, which can only be achieved through fixed delivery and scheduling, variable delivery and scheduling, and fixed delivery and variable scheduling methods. It has the advantages of digitization, modularization, distributed networking, visual controllability, real-time dynamic effect verification, as well as safety, comfort, energy conservation and emission reduction.

One click switching

One click zero delay switching between positive and negative pressure modes, meeting the requirements of rapid conversion and epidemic treatment during the epidemic.

Gradient pressure control

Ensure a pressure difference of -5Pa~-10Pa and a unidirectional flow of air from the clean area to the semi polluted and polluted areas. Dewey high-precision differential pressure transmitters are deployed at the entrance of negative pressure wards and buffer rooms to ensure a pressure difference of -5 to -10Pa during the epidemic, and to ensure one-way flow of air from clean areas to semi polluted areas and polluted areas.

environmental parameter monitoring

Monitor concentration and other factors to meet various environmental monitoring requirements. Ward deploymentDWYKM multifunctional environmental monitoring device monitors indoor environment temperature, humidity, PM2.5 concentration, etc., meeting various monitoring requirements for the environment

crossFilter status monitoring

Differential pressure transmitter is used for differential pressure monitoring, and the data is uploaded to the DT301 main control unit. Deploy Dewey micro differential pressure transmitters for differential pressure monitoring in the high-efficiency filters of air conditioning and room exhaust outlets, and upload the data to the DT301 main control unit.

Airtight feedback and verification

Enable the testing mode to detect three key indicators: maximum air exchange rate, upper pressure difference limit, and lower pressure difference limit. Reverse verify whether the construction meets the design standards. The system defaults to setting and adjusting within the range of key indicators, and the optimal control method can be selected based on actual debugging and operating experience.

characteristic

●Range ± 30Pa, accuracy ≥ 1%, resolution 0.1Pa

●Environmental data collection can be expanded（CO2 、VOC、 Illumination, etc.)

●7-inch color touchscreen for easy setup and display

●12 times/hour ventilation monitoring, customizable frequency

●IP65 embedded installation

●Modular design, modular control, capable of replicating multiple rooms

Model Selection Table