PT100 RTD Sensor Node

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*COMPATIBLE WITH BOTH FLATMESH™ AND GEOWAN™ SYSTEMS*

The PT100 RTD Sensor Node allows for precision temperature monitoring using a variety of sensors. It uses the integrated radio transceiver to report its measurements through Senceive’s wireless communications network to a Gateway.

Temperature monitoring applications:

  • Steel structures
  • Rail, for critical rail temperature alerting
  • Concrete structures, including during curing
  • Heating, Ventilation, and Air Conditioning (HVAC) systems

Key benefits

  • Waterproof, robust connectors for simple installation
  • Accuracy of 0.1°C
  • Can have -IX triaxial tilt sensor integrated for combined tilt and temperature sensing in one unit
  • Integrated long life battery
  • 12-15 year battery life, including when acting as a relay node within the mesh communications network
  • Versatile mounting options
  • Waterproof to IP66 / IP67 / IP68
  • Firmware is remotely upgradeable over the air via the gateway reducing costly site visits

Channel Combination

Model Ports Applications
FM3N-RTD 1 PT100 RTD Channel Single point temperature monitoring
FM3N-IX-RTD 1 PT100 RTD Channel
1 Integrated high precision triaxial tilt sensor
Structural monitoring with precision temperature compensation
Railway deformation and critical rail temperature monitoring

 

Physical Specification

Parameter Value
Dimensions excluding antenna and vent 90 x 90 x 60 mm
Dimensions excluding antenna 90 x 96 x 60 mm
Total Mass 0.57kg
Housing Material Die cast aluminium
Protection
(BS EN 60529: 1992 + A2: 2013)
IP66 / IP67
IP68 at 1m for 24 hours
Mounting Options M4 blind holes in side
¼” UNF holes in bottom
Operating Temperature Range -40°C to +85°C

 

FlatMesh Radio Specifications

Parameter Value
Communication Type Proprietary FlatMesh v3 Mesh Networking
Protocols
IEEE 802.15.4 compliant
Frequency Band 2400 – 2485 MHz ISM Band
Maximum Transmit Power
(EN 300 328 v1.8.1)
6.5dBm
Maximum Permitted Antenna Gain 2.2dBi
Range Up to 300m depending on the environment and fitted antenna
Consult with Senceive for your application
RF Module Senceive FM3Node

GeoWAN Radio Specifications

Parameter Value
* Consult with Senceive for your application
Communication Type Star Topology
Frequency Band 863MHz – 928MHz ISM Band
Maximum Transmit Power 20dBm (actual transmit power depends on geography)
Range Up to 15km depending on the environment and antenna*
Maximum Reporting Frequency 30 Seconds
Sample Storage Stores the latest 36 days of samples at a reporting interval of 30 minutes

RTD Interface

Parameter Value
Connector M12 Female
5-pole A-coded
Screw-in Type
Accuracy < 0.1°C
Resolution < 0.01°C
Temperature Range < -40°C to >85°C
Stimulus Type Constant Current

 

Tilt Sensor (-IX variant only)

Parameter Value
Resolution 0.0001° (0.00175mm/m)
Repeatability ±0.0005° (0.0087mm/m)
Range ±90°

 

Internal Battery

Parameter Value
Battery Type Lithium Thionyl Chloride
Nominal Voltage 3.6V
Nominal Capacity 19000mAh
Typical Battery Life 12-15 years at 20/30 minute reporting intervals, including when acting as a relay node
Consult with Senceive for your application

 

Certifications

  • Tested to conformity with all the essential requirements of RED Directive 2014/53/EU and RoHS Directive 2011/65/EU
  • FCC Grant of Equipment Authorization: FCC ID 2AMFBFM3N

 

Ordering Information and Accessories

Parameter Value
FM3N-RTD
LR3N-RTD
FlatMesh 3 PT100 RTD Sensor Node
GeoWAN PT100 RTD Sensor Node
FM3N-IX-RTD FlatMesh 3 Triaxial tilt sensor and PT100 Sensor Node
FS-PT100R-xxxxx Round Bead Temperature Sensor
For fluid temperature (and air temperature) sensing or for drilled holes
xxxxx is the cable length in millimetres
FS-PT100S-xxxxx Surface Mount Temperature Sensor
Metal leaf can be glued or spot welded to a surface
xxxxx is the cable length in millimetres
FS-PT100M-xxxxx Magnetic Temperature Sensor
Surface temperature of metal structures
xxxxx is the cable length in millimetres
FF-MP-S360 Swivel mounting kit with 360-degree adjustment range

  • screw directly to vertical walls
FF-MP-V Vertical mounting plate

  • use U-bolts to fix to poles or stakes
  • use glue to fix to walls where drilling is not permitted

Use with FF-MP-S360

FF-MP-RA Right angle mounting bracket

  • screw to concrete tunnel linings and inclined walls

Use with FF-MP-S360

FF-MP-T2 Track bed mounting plate kit
FF-MP-M2 Magnetic mounting kit
High degree of adjustability, perfect for cast iron lined tunnels
FF-BK-xxxx
FF-BE
Tilt beam kit
See separate datasheet for more information
FA-FM-WPS Waterproof straight antenna
Overall node height 168mm (approx.) when fitted
Maximum gain +1.1dBi
FA-FM-LPS Waterproof low profile straight antenna
Minimum overall node height, perfect for track bed and tight spots
Overall node height 92mm (approx.) when fitted
Maximum gain 0dBi
FA-FM-ADJ Adjustable angle antenna
Flexible installation, perfect for use in tunnels and indoor environments
Overall node height 202mm (approx.) when upright
Overall node height 102mm (approx.) when at 90-degree angle
Maximum gain +2dBi
FC-NC Antenna cover kit
Use with FA-FM-LPS antenna
Overall node height 96mm (approx.) when fitted