Relative pressure sensor

absolutevacuumceramic

AQ IoT Data Logger + Pressure/Temperature Sensor – Modular, IP68, Smart & Long-Lasting The AQ IoT Data Logger (IP68) paired with the integrated pressure and temperature sensor is a compact and intelligent solution for long-term use in manholes or outdoor installations without mains power. Designed for true low-power operation (100 μA) and under-pressure mounting, the sensor connects via a watertight connector and is powered directly by the logger. The system runs for over 6 years on two replaceable D batteries (with 15-minute logging and 2x daily transmission). Inputs 3 and 4 are used for pressure and temperature, while three additional inputs remain available for analog (4–20 mA / Modbus) or digital sensors such as flow, pH, chlorine, radar and more. The logger stores data internally with configurable intervals from 0.01 seconds to 1 month, and sends data from 1 minute to once per month. Default: log every 30 minutes, send twice daily. Minimum/maximum alarm thresholds can be defined per input. When exceeded, alerts are sent immediately via SMS or email. A built-in humidity sensor ensures early leak detection inside the device. Configuration is possible locally via USB or Bluetooth (AQ Android App) or remotely through AQ WEB. The system supports LTE and NB-IoT for reliable two-way communication. Optional models include 1 or 2 relay outputs. The AQ Data Logger and the pressure/temperature sensor can be ordered as a full set or separately, depending on application needs.