Newtrax - Wireless Node Rtu Mdt Geo
Fixed Instrumentation & Control Devices

Wireless Node – RTU for MDT
Instruments

— Model Number —NTX-WN-RTU-MDT-100

Device Highlights

  • Can monitor up to 3 SMART instruments or 1 SMART instrument and 1 sloughmeter

  • Embedded intelligence samples the instruments and digitizes the signal prior to transmission

  • Data acquisition is completely wireless and battery-powered, with years of battery life

  • Extends the wireless network infrastructure coverage by relaying data from other wireless nodes
  • Provides both mobile access and backhaul routing functionalities

Device Specifications

— Networking —

RF front end
  • 915-928 MHz
  • NMO antenna connector
  • +3dBi omnidirectional antenna
  • TX radiated power: configurable from 1mW to 25mW
  • RX sensitivity: at least -100 dBm
  • 32 x 200 kHz channels
  • Typical omnidirectional range in underground mines: 50 m to 150 m depending on antenna placement, tunnel dimensions and curvature, obstructions and rock type
  • Typical omnidirectional range on surface: 50 m to 600 m depending on antenna placement and obstructions
Spread spectrum protocol
  • TDMA / FHSS
  • Synchronization for communications: ad hoc, per link and distributed
  • Hopping speed: once per time slot
  • Hopping pattern: pseudorandom
  • Link level acknowledgements
  • 76.8 kbps data rate with effective link throughput up to 2.6 kbps (half duplex)
Wireless multi-hop networking protocol
  • 16-bit network address
  • Ad hoc self-organizing and self-healing
  • Routing capability: any-to-any unicast, broadcast, and to/from Central Server via nearest Gateway
Internetworking port
  • 4-pin RS-232 serial port for optional connection to Gateway
RFID
  • Unique 32-bit identification number
  • User configurable label set via Central Server GUI

— I/O interface for instrumentation —

  • Three 10-pin connectors for connection to MDT SMART instruments or sloughmeter
  • 4-pin RS-232 internetworking port, if not used for internetworking, can be used to connect Modbus devices

— Firmware options —

  • MDT instrumentation signal processing
  • MineHop fixed router
  • MineTrax tag
  • Modbus master (device specific, not included by default, call for details and pricing)

— Power Supply —

  • Battery-powered with replaceable battery pack
  • Battery life: typical = 3 years (depends on level of network activity), minimum = 1 year (standard warranty)
  • Low-battery alarm sent to Central Server provides at least 1 week of advance notice
  • Option of external 5-14 VDC line power via 4-pin RS-232 port

— Physical Characteristics —

  • Operating temperature: -40 ºC to +85 ºC
  • Weatherproofing: IP65
  • Dimensions: 120 mm x 120 mm x 90 mm + Antenna + Connector