User's Manual

The display shows :-

• The serial number of loggers in leak mode

• The noise level in dB from the logger; Lv

• The noise spread in dB from the logger Sp

• The time or date the data was received from the logger. The

time is shown for data received today. If the data was received

on a previous day AND more than 12 hours ago, then the date is

displayed.

• The characters on the right hand side of the display are L for

leak and W for warning. Statistically, the probability of a leak

being present is greater for L than for W. However, all logger

results require further investigation to confirm a leak.

All patrol activities are carried out from this screen. The Patroller is fitted with

two sounders. A high pitched beep indicates no-leak and a low-pitched beep

indicates a leak. This information is also shown graphically on the lower part

of the screen where a cursor scans across the screen over a period of 5

seconds. A vertical bar marks each leak/no-leak event received, with the

height of the bar indicating the received signal strength. When full radio data

is received (serial number, noise level and spread), the bar is marked with a

pennant.

The main part of the screen shows a list of loggers whose full radio data have

been received. One of these is highlighted with an inverting cursor and the

deployment details of the highlighted logger (if entered previously) are shown

in the box below. Use the up and down arrows to move the cursor and select

a different logger.

The number keys each have a specific function assigned. These functions

can be accessed directly by pressing the key in the Leak Patrol screen, or by

first pressing ENT to show the Patrol Menu which lists these functions. The

ENT key toggles between the Leak Patrol Screen and the Patrol Menu

screen.