Functional features

High Integration: The integration of four measurement functions into a single unit significantly reduces the number of underground monitoring devices required. This not only conserves valuable installation space but also substantially lowers deployment and maintenance costs.

① Remote Adjustment Function

Supports remote operation within a 5-meter range, with an effective control angle of 0° to 30°, enabling flexible and convenient on-site debugging.

② Multi-Parameter Independent Alarm Setting

Allows individual alarm point configuration for each of the four parameters. Users can freely set alarm thresholds within the measurable range of each parameter.

③ RS485 Communication Function

Equipped with an RS485 interface with configurable baud rate. The default factory setting is 9600 bps, and the communication mode is fixed at even parity.

④ Multi-Alarm Output Mechanism

When any parameter exceeds its limit, the sensor immediately triggers both audible and visual alarms. Simultaneously, the switch output changes from low to high level.

l Audible alarm intensity: ≥80 dB(A) at 1 meter

l Visual alarm visibility: Clearly visible from 20 meters in dark conditions

Technical parameters

① Power Supply Performance

Operating voltage range: DC 9 ~ 24.5V

Rated operating voltage: DC 18V

Maximum working current: ≤100mA

② Measuring Range and Error

Differential pressure: -500～500Pa, Error ≤±2Pa, Resolution 1Pa.

Absolute pressure: 60 ~ 110kPa, Error ≤ ± 30Pa, Resolution 1Pa

Temperature: -10℃～80℃, Error≤±1℃, Resolution 0.01℃.

Humidity: 0～100%RH, error≤±3%RH, resolution 0.024%RH

③ Response characteristics

Temperature response time: minimum 5s

④ Output signal

RS485 output

Interface number: 1 channel

Transmission mode: RS485, master-slave, half-duplex

Transmission rate: 1200～38400bps

Transmission distance: ≤2000m (when using 1.5mm² wire cross-section)

Signal voltage peak: 2～12V

⑤ Switching output

Interface number: 1 channel

Output voltage: DC 24V

Maximum current: 100mA