IJINUS E002 User Manual

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Autonomous Wireless Overflow Detector

Product code: LSC

Tutorial

CONFIDENTIALITY

All information in the following document are strictly confidential.

Further use of this document and its content must be submitted and approved by IJINUS.

This device complies with FCC radiation exposure limits set forth
for general population. This device must not be co-located or
operating in conjunction with any other antenna or transmitter.

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Document updates

Ref Date Modification

01A01 2011*09/09 Initial draft

02A01

2014/11/15

Translation

02A04

2018/02/13

FCC warnings updated

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Summary

Introduction........................................................................................................................................................................4

2. Principal of Operation..................................................................................................................................................... 6

............................................................................................................................................................................................ 6

3. Autonomous overflow detector...................................................................................................................................... 7

3.1 Specifitities.................................................................................................................................................................... 7

- Radio frequencies:......................................................................................................................................................... 7

- Measurements: Time outs and detection thresholds.......................................................................................................7

- Data recovery: Remotely via GSM/GPRS data logger or on site........................................................................................7

- Overflow alarms: Beginning and end of an overflowing event.........................................................................................7

3.2. Set-Up with the AVELOUR Software.............................................................................................................................8

3.3. Battery life guideline..................................................................................................................................................12

4. Field testing results....................................................................................................................................................... 12

5. Maintenance................................................................................................................................................................. 13

The Autonomous Overflow Detector is designed to operate in rough and dirty environments. We recommend a

periodic cleaning cycle to optimize use and accuracy.......................................................................................................13

6. Case technical specificities............................................................................................................................................14

7. Warning to users in the United States........................................................................................................................... 15

Detection Area

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Introduction

The Autonomous Overflow Detector will detect the presence of water (or any conductive fluid) above
a threshold (ON/OFF state). The detection area is clearly marked on the case by 2 white lines which
allows a precise installation. The user will simply position the detection area at the threshold level
required.

A capacitive measure will detect water on the case surface. Note that the measuring system is
located inside the case.

In order to improve their accuracy, the capacitive measurements are temperature compensated.

1. Presentation of the Capacitive Technology

The measuring system works around an electrode fixed on the inside of the case, directly behind the
detection area. An electric field is triggered from the electrode and travels towards the outside of the
case. The electrode and the outside environment (water) on the detection area will then become the
2 terminals of the passive capacitor which will create an electric capacity. This capacity will vary
depending on the dielectric constant of the environment and its electrical conductivity.

Based on this principal, the higher the environment’s dielectric constant, the higher the capacity
measure will be. As an example, the dielectric constant of dry air equals 1, while water’s equals 80.

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 Advantages and comparison against mechanical and resistive systems

The advantage of the capacitive technology is the fact that there is no direct contact between the
detection system and the environment (which is not the case of conductive systems). Mechanical
systems (floaters), are often failing due to clogging, impacts or foreign objects.

Conductive Mechanical Capacitive