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 Updated: 5 Mar 2018
 

 

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WIRELESS CONTROL - SonNet System - End Sensing Devices

   

Description
Technical Overview

RF-RS End Sensing Devices
Sensor nodes are used in conjunction with the RF-RX20 or RF-RX40 receiver units, and if required (depending on installation topography), RF-RR series of routers.

 Data is transmitted back to the receiver at configurable time intervals, or on a configurable change in measured value. Each sensor retains these configurations if the battery becomes discharged or requires replacement.

The sensors automatically find the best path back to the receiver, which may be directly to the receiver or via ‘parent’ routers.

 

Leaflet

General  

 

 

on request

Information

Startguide


Battery powered nodes are available in four formats

  • Space mounting temperature, with setpoint and momentary switch options

  • Space mounting RH&T, with setpoint and momentary switch options

  • Plant mounting temperature

  • Plant mounting RH&T

  •  


    Installation

    Technical Overview

    The radio RF-RS sensors are used in conjunction with the RF-RX20 or RF-RX40 receiver units, and if required (depending on installation topography), RFRR series of router radio sensors. Routers are used to route signals from battery powered nodes and other routers to the receiver module, where the signal strength of a direct path is not sufficient for reliable communications.

    The sensors, routers and receiver automatically select which of the 16 transmission channels available gives the best radio network performance, taking into account both signal strength and interference levels from adjacent channels and equipment (such as Wi-Fi etc.).

    The sensors and routers automatically find the best path back to the receiver, which may be directly to the receiver or via “parent” routers. NB Each router can support a maximum of 16 “children”, a maximum of 8 of which can be battery powered “end devices” and a maximum of which can be 8 routers. Consideration should be given on network planning for redundancy in case of router failure or damage.

     

           
     

    RF-RS-T-541

     

    RF-RS-T-522

     

    Immersion

      Duct

      RF-RS-T-551  

    RF-RS-T-531

     

    Strap.on

      Outside

      RF-RS-T-555  

    RF-RS-T-532

     

    Flying Lead

      Outside

      RF-RS-R-531   RF-RS-R-841

     

    Wall

      Outside

     

    RF-RS-T-911

      RF-RS-R-911
     

    Space

      Space

    The RF-RS-T-551 range of strap-on temperature sensors are used for detection of pipe temperatures, where it isn’t possible to insert a pocket. The sensing element is housed in a 50mm long shaped brass probe, with 2 meters of PTFE screened cable.

    The RF-RS-T-555 flying lead temperature sensors are used for the detection of air temperature. Units contain a high quality thermistor sensing element which is housed in a acetal resin probe, with 2 metres of screened cable as standard. Longer cable lengths are available to order (at extra cost) along with a potted variant for low temperature applications and water submersion.

    Labels
    Labels are available in plain, pre-printed or customer print types and a choice of either dark grey or white.

    Installation
    RF-RS

    1. Remove all packaging from the sensor

    2. Note the MAC address printed on the affixed label and note where this MAC address is installed.

    3. Remove the lid by twisting and separating from the main body and install the Li-SOCl2 2/3 A battery, observing the correct polarity.

    4. Mount the sensor in the required position (this will have been determined by the site survey tool, (see the quick start guide and manual), where dust & contaminants are at a minimum (i.e. after filters etc.) and which will give a representative sample of the prevailing air condition.

    5. Drill two holes at 85mm centres and a 19mm diameter hole centrally between them for the duct probe.

    6. Fix the IP65 housing to the duct with appropriate screws. Making sure to align the holes in the probe so they point into the air flow. The housing is designed to make it easy for an electric screwdriver to be used if desired.

    7. To power on the unit, fit J400.

    8. Allow 3 minutes before checking functionality.

    9. Allow 30 minutes before carrying out precommissioning checks.

    10. Ensure, at a minimum, that all routers and the receiver on the radio network are powered on, and allow about 5 minutes for the network to autocommission before attempting to read values or make configuration changes.

    RF-RS-T-551 and RF-RS-T-555

    1. Remove all packaging from the sensor

    2. Note the MAC address printed on the affixed label and note where this MAC address is installed.

    3. Remove the lid by twisting and separating from the main body and install the Li-SOCl2 2/3 A battery, observing the correct polarity.

    4. Mount the sensor in the required position (this will have been determined by the site survey tool, (see the quick start guide and manual).

    5. Drill two holes at 85mm centres, fix the IP65 housing to the duct with appropriate screws. Making sure to align the holes in the probe so they point into the air flow. The housing is designed to make it easy for an electric screwdriver to be used if desired.

    6. To power on the unit, fit J400.

    7. Secure the brass lug to the surface to be monitored, using the strap supplied.

    8. Ensure, at a minimum, that all routers and the receiver on the radio network are powered on, and allow about 5 minutes for the network to autocommission before attempting to read values or make configuration changes

     


    Specification:

    Radio Output:

    Frequency 2.4GHz, 16 channels, direct-sequence spread spectrum

     

    Compliance IEEE 802.15.4-2006

    Aerial Characteristics:

    Space: Gain 1.2dBi, VSWR 1.5:1
    Plant: Gain 2.0dBi, VSWR 2:1

    Data Encryption:

    AES 128

    Power Output:

    +10dBm

    Accuracy:

    Temperature ±0.3°C
    Optional RH ±3% RH

     

     

    Battery Type:

    Space 3.6V AA 2.4Ah Li-SOCl2, non-rechargeable

     

    Plant 3.6V 2.1Ah 2/3 A Li-SOCl2, non-rechargeable

    Battery Life:

    > 3 years (depending on configuration)

    Plant Router Types:

    Duct, outside air, outside air with solar radiation shield, immersion, strap-on and flying lead

     

    E-mail: ewert@automatikprodukter.se     

    Phone: +46(0)31-287202

    Mobile: +46(0)708885298

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