GMI Gasurveyor 11-500 Instruction Manual

Gasurveyor11-500
(CGI / Inert)
User Handbook

GASURVEYOR 11-500 USER HANDBOOK
Issue 1
03/11/06
Part Number: 42212
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Copyright © Gas Measurement Instruments Ltd 2001

i
COPYRIGHT
This User Handbook is copyright of Gas Measurement Instruments Ltd (GMI) and
the information contained within, is for use on y with the Gasurveyor 11-500
instrument. Reproduction, in who e or in part, inc uding uti isation in machines
capab e of reproduction or retrieva without written permission of Gas Measurement
Instruments Ltd is prohibited. Reverse engineering is not permitted.
LIABILITY
Every care has been taken in the preparation of this document, but GMI Ltd do not
accept any responsibi ity for errors or omissions and their consequences. Information
in this document is subject to change without notice. This document does not constitute
a specification or basis for a contract. Your statutory rights under aw are not affected.
MODIFICATION NOTICES
GMI aim to notify customers of re evant changes in the product operation and maintain
this manua up to date. In view of the po icy of continuous product improvement
there may be operationa differences between the atest product and this manua .
This Handbook is an important part of the Gasurveyor 11-500 product. P ease note
the fo owing points:
 It shou d be kept with the instrument for the ife of the product.
 Amendments shou d be attached.
 This Handbook shou d be passed on to any subsequent owner/user of the
instrument.
 A though every care is taken in the preparation of this Handbook it does not
constitute a specification for the instrument.
SOFTWARE
Software supp ied on EPROM or simi ar device for use in a particu ar product, may
on y be used in that product and may not be copied without the written permission of
Gas Measurement Instruments Ltd. Reproduction or disassemb y of such embodied
programmes or a gorithms is prohibited. Ownership of such software is not
transferab e and GMI Ltd does not warrant that the operation of the software wi be
error free or that the software wi meet the customers requirements.
DISPOSAL ADVICE
When no onger in use, dispose of the instrument carefu y and with respect for the
environment. GMI wi dispose of the instrument without charge if returned to the
factory.

GASURVEYOR 11-500 USER HANDBOOK
ii
SAFETY
 The instrument must be regu ar y serviced and ca ibrated by fu y trained
personne in a safe area.
Batteries: A ka ine batteries or *Rechargeab e battery pack must be
exchanged (*and recharged) in a safe area and fitted correct y before use.
Never use damaged batteries or expose to extreme heat.
See Section 4 : OPERATOR MAINTENANCE.
 On y GMI rep acement parts shou d be used.
 If the instrument detects gas, fo ow your own organisations procedures and
operationa guide ines.
 The combustion chamber is a f ameproof assemb y and must not be opened
in the presence of a f ammab e atmosphere.
 Gasurveyor 11-500 instruments are certified as EEx iad IIC T4
(-20oC< Tamb < 50oC). BAS01ATEX2292 II 2 G.
UL C ass 1 Groups A, B, C and D.
 This equipment is designed and manufactured to protect against other
hazards as defined in paragraph 1.2.7 of Annex II of the ATEX Directive
94/9/EC
Any right of c aim re ating to product iabi ity or consequentia damage to any third
party against GMI is removed if the warnings are not observed.
AREAS OF USE
Exposure to certain chemica s can resu t in a oss of sensitivity of the f ammab e
sensor. Where such environments are known or suspected it is recommended that
more frequent response checks are carried out. The chemica compounds that can
cause oss of sensitivity inc ude Si icones, Lead, Ha ogens and Su phur. Do not
use instrument in potentia y hazardous atmospheres containing greater than 21%
Oxygen. The enc osure materia is po ypropy ene and must not be exposed to
environments which are iab e to resu t in mechanica or therma degradation or to
damage caused by contact with aggressive substances. Additiona protection may
be required in environments where the instrument enc osure is iab e to damage.
STORAGE, HANDLING AND TRANSIT
The batteries in the rechargeab e pack contain considerab e energy and care shou d
be taken in their hand ing and disposa . Battery packs shou d be removed if the
instrument is stored for onger than 3 months. The instrument is designed to hand e
harsh environments. The sensing e ements are sea ed to IP54 and the rest of the
instrument to IP64. If not subject to misuse or ma icious damage, the instrument
wi provide many years of re iab e service. The instrument contains e ectrochemica
sensors with a ife of 2 years. Under conditions of pro onged storage the sensors
shou d be removed. The sensor contains potentia y corrosive iquid and care shou d
be taken when hand ing or disposing of the sensor, particu ar y when a eak is
suspected.

iii
DECLARATION OF CONFORMITY

GASURVEYOR 11-500 USER HANDBOOK
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v
REVISION RECORD
Date Issue Description Of Change
03/11/06 1 New Handbook

GASURVEYOR 11-500 USER HANDBOOK
vi

vii
CONTENTS
COPYRIGHT ................................................................. i
LIABILITY ...................................................................... i
MO IFICATION NOTICES ........................................... i
SOFTWARE .................................................................. i
ISPOSAL A VICE ...................................................... i
SAFETY ........................................................................ ii
AREAS OF USE ........................................................... ii
STORAGE, HAN LING AN TRANSIT .......................... ii
DECLARATION OF CONFORMITY ................. iii
REVISION RECORD ....................................... v
INTRODUCTION ............................................. 1
GENERAL INFORMATION ............................. 3
Ranges of Operation .................................................... 3
LEL, 0 to 100% ........................................................... 3
Volume Gas, 0 to 100 % ............................................ 4
Oxygen, 0  25% ....................................................... 4

GASURVEYOR 11-500 USER HANDBOOK
viii
Alarms ........................................................................... 5
Alarm Functions ......................................................... 6
Construction ................................................................. 7
Batteries ........................................................................ 7
isposable Alkaline (LR20) ry Cell Batteries ........... 7
Rechargeable Battery Pack ....................................... 8
Filters ............................................................................ 8
Liquid Crystal isplay (LC ) ........................................ 9
Before Use Checks ...................................................... 9
OPERATING INSTRUCTIONS ....................... 11
Modes of Operation .................................................... 11
Switching On ........................................................... 12
Calibration ate Features ........................................ 13
Switching Off the Instrument Pump ......................... 13
Switching On in Purge Mode ................................... 14
Switching Off ........................................................... 14
Changing Range ....................................................... 15
Summary of Button Operation ................................. 15
Operator Messages / Fault Flags ............................... 16
OPERATOR MAINTENANCE ....................... 19
Rechargeable Battery Pack ........................................ 19
Standard Charger ..................................................... 19
Flatbed Charger ....................................................... 20

ix
CONTENTS
Smart Charger .......................................................... 20
Replacing the Battery Pack ...................................... 21
Recharging the Battery Pack ................................... 22
Replacing Alkaline (LR20) ry Cell Batteries ............. 22
Filter Replacement ...................................................... 24
CALIBRATION .............................................. 27
Calibration Validity ....................................................... 28
ACCESSORIES ........................................... 29
ADDITIONAL INFORMATION ........................ 33
Training ....................................................................... 33
World Wide Web ......................................................... 33
TYPICAL OPERATING PARAMETERS ....... A-1
Size ........................................................................ A-2
Weight .................................................................... A-2
Operating Temperature .......................................... A-2
Humidity .................................................................. A-2
Construction ........................................................... A-2
isplay .................................................................... A-2
Sampling System .................................................... A-2
Power Source ........................................................ A-3

GASURVEYOR 11-500 USER HANDBOOK
x
FIELD CALIBRATION .................................. B-1
Selectable Ranges in FCM ........................................ B-3
Entering FCM ............................................................. B-3
Zeroing the Instrument ............................................. B-4
Field Calibration Procedure ....................................... B-5
Quitting FCM .............................................................. B-9
Quit And Save Changes ........................................ B-9
Quit Without Saving Changes ................................ B-9
OPERATING INSTRUCTIONS ..................... C-1
English..................................................................... C-2
Deutsch (German) .................................................. C-6
L'italiano (Italian) ................................................... C-10
Svens (Swedish) ................................................ C-14
Dans ( anish) ...................................................... C-18
Nederlands ( utch) ............................................. C-22
INDEX ............................................................. I

1
INTRODUCTION
The Gasurveyor 11-500 is a two button instrument
designed to measure Lower Explosive Level, Volume
lammable gas and Oxygen. The instrument is designed to
the latest standards and is certi ied or use in Hazardous
Areas.
The Gasurveyor 11-500 contains the ollowing ranges:
 LEL, 0 to 100%
 Volume gas, 0 to 100%
 Oxygen, 0 to 25%
1

GASURVEYOR 11-500 USER HANDBOOK
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As the Gasurveyor 11-500 has a wide variety o available
user selected options, it is not possible to provide an
operator handbook speci ic to each possible variation,
there ore, what we have provided in the ollowing pages
is the standard de ault o how the instrument would
generally be con igured, with the possible options detailed
in italic text.
GMI recommend that you take the time to study your
instrument and, where practical and with advice rom your
companys Purchasing / Management departments,
highlight your particular instrument con iguration.
The main eatures o the instrument are:
 Rugged carbon loaded polypropylene case, sealed
to IP54 rating and suitable or outdoor use.
 Two button operation allowing the user access to
all eatures.
 LCD with backlighting which displays the current
gas readings (in both digital and analogue orms)
together with operational and status in ormation.
 Audible and Visual alarm options. Alarm levels, i
selected, are pre-set with rising alarms or the LEL
lammable range and a rising and alling alarm or
oxygen.
 Directly inter aces with the GMI Auto Test Cali-
bration Units.

3
GENERAL INFORMATION
Ranges of Operation
LEL, 0 to 100%
The LEL range indicates the explosivity o the lammable
gas in the sample. This is displayed as a percentage o the
lower explosive limit (LEL) o the gas. For methane 100%
LEL corresponds to 5% Volume methane in Air.
The instrument range is displayed in the top right corner
o the display as % LEL. From 0 to 10% LEL the digital
display resolves to 0.1% LEL. From 10 to 100% LEL the
digital display resolves to 1% LEL. The analogue bar
graph ollows in 4% steps. An example o the LEL display
is shown in Figure 2.1. Autoranging will automatically
switch the range to Volume Gas when 100% LEL is
reached.
The detection principle or this range is a catalytic reaction.
Figure 2.1 LEL Range
2

GASURVEYOR 11-500 USER HANDBOOK
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Volume Gas, 0 to 100 %
This range displays the total volume o a speci ic
lammable gas with respect to air. The calibration gas is
shown on the service label and or the purpose o this
handbook is assumed to be methane. Instruments
calibrated or methane in air should only be used or
measuring such mixtures. To change the calibration gas,
e.g. rom methane to propane, the instrument must be
recalibrated by suitably trained personnel.
On the Volume Gas range the instrument range is
displayed in the top right corner o the LCD as GAS. The
digital display resolves the signal to 1% GAS with the
analogue bar graph ollowing in steps o 4%. Figure 2.2
shows the Volume Gas display. The detection principle
or the Volume Gas range is thermal conductivity.
Figure 2.2 Volume Gas Range
Ox gen, 0  25%
This range displays the percentage Oxygen content o the
sample. The instrument range is displayed in the top right
corner o the display as % O2. From 0 to 21% O2 the digital
display resolves to 0.1% O2. From 21 to 25% O2 the digital
display resolves to 1% O2. The analogue bar graph ollows
in 4% steps.

5
The gas level is determined using an electrochemical cell,
which like toxic sensors is sensitive to pressure transients.
The oxygen cell has an expected li e o two years.
Alarms
The Gasurveyor 11-500, by de ault, has both audible and
visual alarms o when operating.
The audible alarm is rated up to 85 dB(A). The visual
alarm is a red LED indicator which protrudes from the
instrument top plate allowing viewing from any angle
above the top plate.
The instrument by default will have alarm levels for
Flammable LEL and Oxygen pre-set.
The Gasurveyor 11-500 has the facility to have two (2)
instantaneous alarm levels for the LEL range in the
instrument. These are described as LOW and HIGH
although generally only the high alarm would be active.
The Oxygen range alarms are described as falling and
rising and both are active when alarms are selected.
When both instantaneous alarms are set the LOW
audible and visual alarm cycle will be activated for 0.5
seconds on and 0.5 seconds off. The HIGH audible and
visual alarm cycle will be activated for 0.25 seconds on
and 0.25 seconds off.
The option is to have the instantaneous alarms activated.
It is the responsibility of the user to ensure that the alarm
levels, where set in the instrument, are appropriate for
the safe operation and legal requirements for the country
/ industry in which the unit is being used.
GENERAL INFORMATION

GASURVEYOR 11-500 USER HANDBOOK
6
Alarm Functions
The Gasurveyor 11-500, by de ault, has both audible and
visual alarms o when operating.
For each range in the instrument where the alarm function
is selected the options are for audible and/or visual to
be latching or non-latching. That is where an alarm level
is exceeded the instrument LED flashes and/or the
sounder pulses rapidly. Latching alarms are cleared
manually by a double press of Button Two after the
detected gas level has fallen below the alarm limit.
Each alarm has to be acknowledged individually e.g. If
both LOW (10%) and HIGH (20%) instantaneous alarms
have been set then both would have to be acknowledged
individually if LEL is greater than 20%. If the audible
and/or visual indicators are set to off then the display
alarm function would need to be acknowledged in the
same way. Alarm display example is shown in Figure 2.3.
Figure 2.3 LEL Alarm Display Example
When an alarm limit for any gas range is exceeded the
LCD automatically displays the range in alarm. If more
than one alarm is active the highest priority alarm is
displayed. The alarm priorities are Oxygen LEL.
Non-latching alarms clear automatically when the gas
levels fall below the alarm limit.

7
For both Latching and Non-Latching alarms it is possible
for both audible and visual indicators to be either On or
Off independent of each other.
Construction
The instrument is housed in a tough, impact resistant,
moulded case made o carbon loaded polypropylene.
The top panel is protected by a stainless steel top plate
covering a toughened glass LCD cover.
The battery pack is sealed and attached to the main
instrument body by means o 2 stainless steel hexagonal
screws.
The instrument is sealed against dust and water to IP54
standard. The sensors are protected rom dust and water
by membrane and cotton ilters.
Batteries
Disposable Alkaline (LR20) Dr Cell Batteries
Alkaline batteries provide approximately 15 hours
operational li e at ambient temperature o 20oC (68oF).
When the batteries are low or exhausted it is necessary to
it 4 new batteries. Do not mix old and new batteries.
An indication o the battery condition is displayed a ter
power on and during warm-up, with status shown as either
OK or LO. I LO condition is displayed, a maximum
battery operational li e o 120 minutes remains. During
operation the BAT alarm lag is displayed when
approximately 60 minutes o operating time remains at
GENERAL INFORMATION

GASURVEYOR 11-500 USER HANDBOOK
8
normal temperature. The instrument may continue to
be used until it switches o automatically.
Rechargeable Batter Pack
The GMI rechargeable battery pack provides
approximately nine hours operational li e, rom ully
charged, at ambient temperature o 20oC (68oF). An
indication o the battery condition is displayed a ter
power on and during warm-up, with status shown as
either OK or LO. I LO condition is displayed, a
maximum battery operational li e o 90 minutes remains.
During operation the BAT lag is displayed when
approximately 30 minutes operating time is le t at
normal temperatures. The instrument will then turn o .
There are three GMI Battery Chargers: a Standard
Charger, a Flatbed Charger and a Smart Charger. The
Smart Charger has both slow and ast charge options as
well as a serial link or communications with the
instrument. See Rechargeable Battery Pack in Section
4 OPERATOR MAINTENANCE.
Filters
A number o di erent ilter types are available rom
GMI. The minimum requirement is a cotton particulate
ilter and a hydrophobic ilter which are incorporated
in the probe handle assembly supplied with the
instrument. Filters must be checked at requent intervals
and where appropriate changed to ensure a clean sample
path. I water is drawn into the instrument any ilter
which has been contaminated must be cleaned or