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Sentinels Intrinsically Safe Modules for Hazardous Areas
Brand: Signal Fire Wireless TelemetryModels
- 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
- 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
Documentation
Data Sheets
Application Note
Diagram
Drawings
- Sentinel – Control Drawing -Digital and Turbine pdf 131 KB
- Sentinel – Control Drawing – HART and Analog pdf 132 KB
- Sentinel – Control Drawing – Modbus 2DI pdf 165 KB
- Sentinel – Control Drawing – Modbus, Thermocouple, RTD, and Float Stick pdf 184 KB
- Sentinel 3D Model zip 167 KB
- Sentinel Dimensional Drawing pdf 38 KB
Manual
- Sentinel – Analog Manual pdf 1.1 MB
- Sentinel – Digital Manual pdf 972 KB
- Sentinel – HART Manual pdf 1.0 MB
- Sentinel – Modbus Manual pdf 1.8 MB
- Sentinel – Modbus with 2DI Manual pdf 1.8 MB
- Sentinel – POT Interface Manual pdf 816 KB
- Sentinel – RTD Manual pdf 743 KB
- Sentinel – Thermocouple Manual pdf 771 KB
- Sentinel – Turbine Manual pdf 888 KB