PS-LB-D -- LoRaWAN Differential Pressure Sensor

User manual
Datasheet

Sometimes it is not necessary to monitor the absolute air pressure but we need to know the difference of pressures in different points. One example may be before and after a valve in a pipe. If the valve is fully open, the pressure on both sides should be the same. If there's a difference in the pressure, it could be the valve isn't fully open or there's a blockage.

Differential Pressure Sensor has two air pressure inputs. It monitors the pressure difference between these two inputs and put the value.

Differential Pressure Sensors can be used in home and industrial environments for applications such as offshore and subsea gas processing, and remote heating systems.

Dragino's Wireless Differential Pressure Sensor includes various model to cover LoRaWAN, NB-IoT wireless transmission and different range of pressure measurement.

Feature： 

•  • LoRaWAN USB adapter base on LA66 LoRaWAN module
•  • Ultra-long RF range
•  • Support LoRaWAN v1.0.3 protocol
•  • Support peer-to-peer protocol
•  • TCXO crystal to ensure RF performance on low temperature
•  • Spring RF antenna
•  • Available in different frequency LoRaWAN frequency bands.
•  • World-wide unique OTAA keys.
•  • AT Command via UART-TTL interface
•  • Firmware upgradable via UART interface
•  • Open Source Mobile App for LoRaWAN signal detect and GPS tracking.

Specifications:

   Micro Controller:

•  • MCU: 48Mhz ARM
•  • Flash: 256KB
•  • RAM: 64KB

   Common DC Characteristics:

•  • Supply Voltage: 2.5v ~ 3.6v
•  • Operating Temperature: -40 ~ 80°C

    LoRa Spec:

•  • Frequency Range, Band 1 (HF): 862 ~ 1020 Mhz
•  • Max +22 dBm constant RF output vs.
•  • RX sensitivity: down to -139 dBm.
•  • Excellent blocking immunity

    Current Input Measuring :

•  • Range: 0 ~ 20mA
•  • Accuracy: 0.02mA
•  • Resolution: 0.001mA

   Voltage Input Measuring:

•  • Range: 0 ~ 30v
•  • Accuracy: 0.02v
•  • Resolution: 0.001v

   Battery:

•  • Li/SOCI2 un-chargeable battery
•  • Capacity: 8500mAh
•  • Self-Discharge: <1% / Year @ 25°C
•  • Max continuously current: 130mA
•  • Max boost current: 2A, 1 second

   Power Consumption:

•  • Sleep Mode: 5uA @ 3.3v
•  • LoRa Transmit Mode: 125mA @ 20dBm, 82mA @ 14dBm