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Sentinels Intrinsically Safe Modules for Hazardous Areas

Brand: Signal Fire Wireless Telemetry

Models

  • Sentinel HART  – Connects to a single HART sensor
  • Sentinel Analog – Connects to a single 4-20 mA/1-5v sensor
  • Sentinel Digital – 2 digital inputs; 2 KHz frequency response
  • Sentinel Modbus – RS-485 Modbus interface
  • Sentinel Turbine – Connects directly to the Magnetic Pickup of the Turbine Sensor
  • Sentinel Thermocouple – Connects directly to Thermocouple sensors (J, K other)
  • Sentinel RTD – Connects directly to P100 RTD sensors
Features
  • Powers sensor and radio for years with an internal battery
  • Class 1 Division 1 Intrinsically safe system
  • Optional Class 1 Division 1 solar module with integrated charger, battery panel, and mounting bracket
  • Costs less than 60ft of installed conduit
  • Rugged design for demanding outdoor environments
  • Up to 1/2 mile range
  • Sensor independent
  • 1/2” NPT conduit interface
  • Automatically configures as a star or mesh network
  • Simple to install and maintain

Specifications

Operating Temperature

  • -40 °C to 60 °C

Power

  • 3 X D Lithium battery pack. Field replaceable

Sensor Power

  • Powers both the radio system and the sensor/transmitter. User configurable 1-5 Vdc or 4-20 mA mode.
  • 4-20 mA mode: 18 Vdc @ 4 mA, 13 Vdc at 20 mA.

Data Interface

  • Wireless – available as Modbus registers at Gateway.

Data Update Rates

  • User-selectable. 5 seconds to 1 hour, typical.

Supported Sensor Interfaces

  • HART
  • 4-20 mA current loop
  • 1-5 Volt, Digital input
  • RS-485/Modbus
  • Thermocouple and RTD temperature sensors.

Radio Power

  • 40 mW

Receive Sensitivity

  • -109 dB

Radio Frequency

  • 902–928 MHz, FHSS, license-free ISM. Band Compliant with FCC Part 15.

Range

  • Up to 1/2 Mile

Networks

  • Up to 65,520 separate networks.

Intrinsically Safe

  • Class 1 Division 1, Temp Code T3, Groups C&D.
  • Conforms to UL Std. 913, Certified to Can/CSA Std C22.2 No. 157
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