netvox R718VA User Manual
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netvox R718VA User Manual

Wireless capacitive proximity sensor
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R718VA
Wireless Capacitive Proximity Sensor
Wireless Capacitive Proximity Sensor
R718VA
User Manual
Copyright© Netvox Technology Co., Ltd.
This document contains proprietary technical information which is the property of NETVOX Technology. It shall be maintained in strict
confidence and shall not be disclosed to other parties, in whole or in part, without written permission of NETVOX Technology. The
specifications are subject to change without prior notice

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Summary of Contents for netvox R718VA

  • Page 1 This document contains proprietary technical information which is the property of NETVOX Technology. It shall be maintained in strict confidence and shall not be disclosed to other parties, in whole or in part, without written permission of NETVOX Technology. The...

  • Page 2: Table Of Contents

    Table of Contents 1. Introduction ..........................2 2. Appearance ..........................3 3. Features ............................ 3 4. Set up Instruction ........................4 6. Data Report ..........................5 6.1 Example of ReportDataCmd ....................5 6.2 Example for Report Configuration ..................6 6.3 Example for MinTime/MaxTime logic ................7 7.

  • Page 3: Introduction

    1. Introduction R718VA is a device to detect the level of toilet water and liquid hand soap. This device is connected with a non-contact capacitive sensor can be mounted to the exterior of the container. Without direct contact, the sensor can detect presence and absence of water or liquid hand soap within the measurement range.

  • Page 4: Appearance

    ⚫ Applicable to third-party platforms: Actility / ThingPark / TTN / MyDevices / Cayenne ⚫ Low power consumption and long battery life Note: Battery life is determined by the sensor reporting frequency and other variables. Please refer to http://www.netvox.com.tw/electric/electric_calc.html. On this website, users can find various types of battery lifetime in different configurations.

  • Page 5: Set Up Instruction

    4. Set up Instruction On/Off Power on Insert batteries. (User may need a screwdriver to open battery cover.) Turn on Press and hold the function key for 3 seconds until the green indicator flashes once. Turn off (factory resetting) Press and hold the function key for 5 seconds until the green indicator flashes for 20 times. Power off Remove Batteries 1.

  • Page 6: Data Report

    When the liquid level changes from where the device cannot detect to where the device can detect. (0→1) If none of the above conditions is met, the device will report at the MaxTime interval. For the analysis of the data command reported by the device, refer to the Netvox LoRaWAN Application Command document and http://www.netvox.com.cn:8888/page/index.

  • Page 7: Example For Report Configuration

    (1Byte, unit:0.1V) (1Byte 0:off 1:on) (6Bytes,fixed 0x00) Example of Uplink: 019F012400000000000000 1st byte (01): Version 2nd byte (9F): DeviceType 0x9F－R718VA 3rd byte (01): ReportType 4th byte (24): Battery－3.6v 24 Hex=36 Dec 36*0.1v=3.6v 5th byte (00): Status 6th-11th byte (000000000000): Reserved 6.2 Example for Report Configuration...

  • Page 8: Example For Mintime/Maxtime Logic

    Reserved MinTime MaxTime ConfigReportReq 0x01 (1byte (4Bytes,Fixed (2bytes Unit:s) (2bytes Unit:s) Unit:0.1v) 0x00) Status Reserved ConfigReportRsp 0x81 (0x00_success) (8Bytes,Fixed 0x00) R718VA 0x9F Reserved ReadConfigReportReq 0x02 (9Bytes,Fixed 0x00) BatteryChange Reserved MinTime MaxTime ReadConfigReportRsp 0x82 (1byte (4Bytes, (2bytes Unit:s) (2bytes Unit:s) Unit:0.1v) Fixed 0x00) (1) Configure the device report parameters MinTime = 1min (003C), MaxTime = 1min (003C), BatteryChange = 0.1v (0x01)
  • Page 9 Example#2 based on MinTime = 15 Minutes, MaxTime= 1 Hour, Reportable Change i.e. BatteryVoltageChange= 0.1V. MaxTime sleeping (MinTime) sleeping sleeping sleeping Wakes up and Wakes up and Wakes up and Wakes up and Wakes up and collects data collects data collects data collects data collects data...

  • Page 10: Application

    8. Installation Wireless Capacitive Proximity Sensor (R718VA) has two magnets on the back. When using it, the back can attach to a ferromagnetic material, or the two ends can be fixed to the wall with screws (that purchased by users).

  • Page 11: Measurement And Liquid Viscosity

    8.1 Measurement and liquid viscosity 8.1.1 What is dynamic viscosity? Dynamic viscosity is the tangential force per unit area required to move one horizontal plane with respect to another plane - at an unit velocity - when maintaining an unit distance apart in the fluid. 8.1.2 Dynamic viscosity A.

  • Page 12: Containers And Installation Instruction

    The inside and outside surfaces of the container should be flat. The thickness of container: 0 to 20mm Tank type: spherical tank, horizontal tank, vertical tank, etc. Plastic, glass, ceramics, etc. non-metallic container R718VA Mucilage glue R718VA Figure 1. Sensor installation for non-metallic containers...
  • Page 13 4. Glue the sensor on the rubber plug with glue and fix it with a tiny shelf. Make sure the glue has solidified before removing the shelf. Copper, iron, stainless steel metal material water tower, boiler etc. metallic container Rubber plug R718VA Mucilage glue R718VA Figure 2. Sensor installation for metallic container...
  • Page 14 If user would like to use water-absorbing containers, the installation method should follow as the same as the metallic containers’ or install external pipes as below (figure 3 and 4). Rubber plug R718VA Mucilage glue...

  • Page 15: Adjust Sensitivity

    Rubber plug R718VA Mucilage glue Metal water pipe Figure 5. Sensor installed on the branch tee outlet of metal water pipes Rubber tube R718VA Mucilage glue Figure 6. Sensor attached to the rubber tube 8.3 Adjust sensitivity 1. Open the back cover of the sensor head.

  • Page 16: Information About Battery Passivation

    9. Information about Battery Passivation Many of Netvox devices are powered by 3.6V ER14505 Li-SOCl2 (lithium-thionyl chloride) batteries that offer many advantages including low self-discharge rate and high energy density. However, primary lithium batteries like Li-SOCl2 batteries will form a passivation layer as a reaction between the lithium anode and thionyl chloride if they are in storage for a long time or if the storage temperature is too high.

  • Page 17: Important Maintenance Instruction

    10. Important Maintenance Instruction Kindly pay attention to the following in order to achieve the best maintenance of the product: • Keep the device dry. Rain, moisture, or any liquid might contain minerals and thus corrode electronic circuits. If the device gets wet, please dry it completely.

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