SENSECOM-HPNA

Remote transmission device for 2 current sensors (4-20mA) and 2-8 vibrating wire (VW) sensors using a nationwide LPWAN IoT network NB-IoT. 

• Input from current sensors 4-20mA
  • 2 analog channels unit
  • Current loop and thermistor measurement
• Input from resonant sensors with vibrating wire (VW)
  • 2 VW channels unit expandable up to 8 VW channels (by 1-2 expansion modules SENSECOM-HPNCM, each with 1-3 VW channels)
  • String oscillation period and thermistor measurement
• Applicable for VW-type sensors:
  • Pressure/piezometers (pore pressure, soil moisture and water levels)
  • Strain Gauges
  • Load & Pressure Cells
  • Displacements
  • Crackmeters
  • Extensometers
  • In Place Inclinometers
  • Tiltmeters
  • External Temperature
• Operating with Current loop and VW instruments/sensors from producers like:
  • DGSI (Nova Metrix),
  • Encardio,
  • Geokon,
  • Geosense,
  • Gloetzl,
  • Innovative Geo-technical Instrumentation,
  • Pizzi instruments,
  • Roctest (Nova Metrix),
  • RST Instruments (Terra Insights),
  • SISGEO,
  • Soil Instruments (Nova Metrix),
  • Systel instrumentation, etc.
• Current loop range 4mA-20mA
  • Resolution and accuracy:
    • ±0,006% FS with resolution 1 µA
  • The total accuracy of the measurement is usually limited by the accuracy of the current loop sensor itself and its calibration capability.
• Measured VW string frequency range 600Hz – 5kHz
  • Resolution and accuracy:
    • ±0,001% FS with resolution 1 ns
  • The accuracy of the measurement is usually limited by the accuracy of the VW sensor itself and its calibration capability.
• Built-in sensors:
  • atmospheric pressure
  • temperature
  • relative humidity
  • detection of condensed water
  • accelerometer
  • coulomb meter (battery energy consumption)
• Memory (datalogger) for least 1500 measurements
• > 10 years without battery replacement with 2 transmission and 2-12 measurements a day
• external hat-type antenna (built-in antenna -> model HPNCK)
• IP67 protection
• Communication to the nationwide IoT network NB-IoT
• E2E encryption with AES-256 possible

SENSECOM-HP product line