Biral BTD-300 Manual de usuario

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BTD-300

Thunderstorm Detector Field Test Unit

USER MANUAL

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Produced by:

Bristol Industrial and ResearchAssociated Limited (BIRAL),

P. O. Box 2, Portishead, Bristol, BS20 7JB, UK.

Tel: +44 (0) 1275 847787

Fax: +44 (0) 1275 847303

Email: [email protected]

Webpage: http://www.biral.com

This manual describes the installation and operation of the Biral BTD-300 Field Test Unit

and should be read fully before the instrument is used. If there are any questions about the

equipment supplied or the instructions contained within this manual please consult Biral at

the above address.

To assist Biral in the event of questions could you please indicate the equipment type (and

serial number if applicable), nature of your question, approximate number of hours in use and

your return contact details.

The information contained within this manual (including all illustrations, drawings,

schematics and parts list) is proprietary to Biral. It is provided for the sole purpose of aiding

the buyer or user in the operation and maintenance of the instrument. This information is not

to be used for the manufacture or sales support of similar items without the express written

permission of Biral, nor is it to be communicated to any third party without the express

written permission of Biral. In the event that written permission is provided by Biral to

disseminate any of the information contained within this document (in whatever form), this

page (including this copyright declaration) must be attached.

This manual does not create nor include any legally binding obligation for Biral or its

customers and end users. This documentation (and any attached appendices) is for customer

information only.

All information contained in this manual is correct (to the best knowledge of Biral) at the

time of publication. Biral reserves the right to revise this manual without notification.

The Equipment is CE marked and as such is deemed safe for use under

normal operating conditions. Failure to comply with these conditions may

result in personal injury not covered by the CE classification.

Manual Number: 106678

Revision: .02B

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1CONTENTS

1CONTENTS .......................................................................................................................3

2INTRODUCTION..............................................................................................................4

3Setup...................................................................................................................................5

4Operation............................................................................................................................6

4.1 Overhead Lightning.....................................................................................................6

4.2 Vicinity Lightning.......................................................................................................6

4.3 Distant Lightning.........................................................................................................6

4.4 Charged Precipitation..................................................................................................6

4.5 Strong Electric Field....................................................................................................7

4.6 Automatic Ratio Calibration .......................................................................................7



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2INTRODUCTION

This document serves as instruction on how to use the BTD-300 Field Test Unit. The Field

Test Unit is a battery operated device which requires 2 x AA alkaline batteries (batteries

supplied). Unscrew the 2 lower countersunk screws on the back of the Field Test Unit to gain

access to the battery compartment. No user maintenance is required other than replacing

batteries.

Access to 2xAA Batteries

WARNING: Alkaline batteries only.

DO NOT use rechargeable batteries.

WARNING: This equipment is intended for use only with the BIRAL

BTD-300 Thunderstorm Detector. Connection to other equipment may

result in damage or personal injury.

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3Setup

It is intended that the BTD-300 is tested at its final installation position. If the unit is tested in

a building prior to installation it must be recognised that local interfering signals may prevent

the BTD-300 from detecting one or both of the expected test signals from each of the

lightning tests. This does not indicate a fault with either the unit or the Field Test Unit. It is

recommended that the antennas are not fitted if testing indoors as this will reduce the

sensitivity to environmental noise.

Uncoil the 4 metre cable. Thread the cable through the tertiary antenna following the main

shaft and attach to the secondary antenna arm using the Velcro®strap. Connect the individual

wires from the cable to the points shown in the diagram below. Connect the crocodile clips to

the antenna on the same side as the amplifiers are fitted. Labels on the antenna arms will

identify the amplified side. It is important that the cable is attached securely and that the

trailing cable movement is minimised throughout the testing. It is also important that any

movement from people in the proximity is minimised.

Brown wire (Wire number 1).PrimaryAntenna

Blue wire (Wire number 2). SecondaryAntenna

Attach cable with Velcro®

White wire (Wire number 3). Tertiary Antenna

Black wire (Wire number 0). Ground Point

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4Operation

Up to five separate tests are available using the BTD-300 Field Test Unit. Three of those are

related to lightning tests and give a signal which simulates a lightning strike from various

distances. These tests are single event tests and are triggered by a single long button press. It

is recommended that the buttons are pressed for the duration indicated in each test mentioned

below to enable the charge to fully dissipate into the BTD-300. The two remaining tests are to

test the warning signals for Strong Electric Field and Charged Precipitation.

It is recommended that the BTD-300 is connected to a PC running the Biral BTD-300

Control Software (provided with the system). This will clearly display any detected signals,

as specified below.

These tests require the BTD-300 to have the detection sensitivities, calibration ratios and

range definitions set to their factory default values. If these have been changed, the display

will vary accordingly, or it may not respond to the test signals as defined below.

4.1 Overhead Lightning

Press and hold the Overhead button for a minimum of 5 seconds. The test LED should

illuminate for the duration of the test.

Two lightning strikes are expected between 7-9km

4.2 Vicinity Lightning

Press and hold the Vicinity button for a minimum of 5 seconds. The test LED should

illuminate for the duration of the test. Two lightning strikes are expected between 15-16km

4.3 Distant Lightning

Press and hold the Distant button for a minimum of 5 seconds. The test LED should

illuminate for the duration of the test.

Two lightning strikes are expected between 40-43km

4.4 Charged Precipitation

Press and hold the ‘Rain’ button for a minimum of 10 seconds. The LED will illuminate

while the test button is pressed. After approximately 5 seconds the charged precipitation box

on the Biral Control software screen will show a tick.

Releasing the button will clear the charged precipitation warning tick after 5 seconds.

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4.5 Strong Electric Field

Press and hold the ‘Electric Field’ button for a minimum of 10 seconds. The LED will

illuminate while the test button is pressed. After approximately 5 seconds the Strong Electric

Field box on the Biral Control Software screen will show a tick.

Releasing the button will clear the Strong Electric Field warning tick after 5 seconds.

Note- Due to the way the Strong Electric Field test is performed it may detect a near distant

lightning strike at the beginning of the test on the initial press of the test button. This is quite

normal and would not happen during naturally occurring strong electric fields. Removing the

test probe from the Tertiary antenna will prevent this lightning detection indication.

4.6 Automatic Ratio Calibration

It should be noted that the BTD-300 may automatically adjust the calibration ratios to suit

local conditions if five or more suitable lightning flashes are detected within a period of

fifteen minutes which indicate that a change would be beneficial for system performance.

If 5 or more flashes are simulated by this Field Test Unit, this may initiate the automatic ratio

adjustment. If the system is tested prior to final installation, this will not affect the factory set

default ratio values. If routine testing is carried out on installed BTD-300 systems using this

Field Test Unit, it could reset the ratios to their default values. To prevent this happening, the

distant and vicinity buttons should only be pressed once, producing only four suitable

lightning events within a fifteen minute interval (overhead flashes are not utilised for this

automatic calibration). This will not reset the optimised calibration ratios.

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