G‑TECTA® 4GP
Portable Multi‑Gas
Detection Instrument
Operating Manual
UK
2
Contents
Safety and Warning information 3
Instructions – specific for use
in hazardous areas 3
Introduction 4
Sensors 4
Key Features 5
Software 5
Batteries 5, 6, 10, 11
Product Features 6
Switching on 6
Auto Zero 6
Switching off 7
Instrument Storage 7
Normal Operation and Confidence Signals 7
Screen Icons 7
Display Symbols 7
Alarms 8
Data & Event Logging 10
Wearing the Instrument 11
Gas Sampling 12
Maintenance, Calibration and Gas Testing 13
Gas Test/Calibration Troubleshooting 14, 17
G‑TECTA 4GP Instrument with Ozone Sensor 15
PC Interface and PC Software 16
Product Specification 17
Accessories 18
Troubleshooting 19
Sensor Limitations 20
Available Sensors 20
Declaration of Conformity 21
The Linde Group Warranty 22
Whilst The Linde Group has made every effort to
ensure that the details and information given in both
our printed and online publications are accurate at
the time of issue, full technical specifications are not
necessarily included. Furthermore The Linde Group
policy is one of continuous improvement and the
right is reserved to alter details and information as
the need arises. Accordingly the Customer should
check any details and information they wish to rely
on with The Linde Group at the time of purchase. The
Linde Group can not accept liability in respect of any
errors or omissions herein contained or for any loss
or damage malfunction or consequential lost arising
from reliance upon our publication.
The customer will be responsible for any risk to
health or safety from goods in the Customer’s
possession and/or control. The Customer’s attention
is drawn to the fact that statutory regulations and
recognised codes of practice exist covering the
use and handling of some goods (including safety
products.) The Customer must ensure that persons
who use the goods receive adequate training and
safety literature.
3
Safety and Warning information
WARNING
Read and understand all instructions
in the operation section of this operating manual
before use.
WARNING
Do not substitute components as this
may impair intrinsic safety and invalidate warranty.
WARNING
Observe all warnings and
instructions marked on the instrument and within
this operating manual.
WARNING
Observe site health and safety
procedures for gases being monitored and
evacuation procedures.
WARNING
Make sure you understand the
alarm warnings.
WARNING
If this product is not working properly,
read the operating manual or call The Linde Group.
WARNING
The accuracy of G-TECTA® 4GP
instruments equipped with toxic gas sensor(s) should
be checked periodically with known concentration
calibration gas. Failure to check accuracy can lead
to inaccurate and potentially dangerous readings.
G-TECTA
®
4GP instruments equipped with an oxygen
sensor should be periodically calibrated in fresh air.
WARNING
Ensure maintenance and calibrations
are carried out in accordance with the procedures in
the operating manual.
WARNING
The equipment is not certified
for use in atmospheres containing more than
21% oxygen.
WARNING
G-TECTA® 4GP portable gas detectors
have been designed for the detection of either oxygen
deficiencies or specific toxic gas accumulations.
An alarm condition indicates the presence of a
potentially life threatening hazard and should be
taken very seriously.
WARNING
Ensure only qualified
service personnel change sensors, batteries
and operating system.
WARNING
Only charge batteries in safe
(non-hazardous) areas.
Instructions – specific for use
in hazardous areas
The following instructions apply to equipment
covered by certificate numbers
IECEx BAS 09.0118 and Baseefa09ATEX0246.
The following information covers all relevant points
listed in clause 1.0.6 of the Essential Health & Safety
Requirements of the ATEX directive.
1. The certification marking is as follows:
2. The G-TECTA
®
4GP may be used in Zones 1
and 2 with Groups IIA, IIB, and IIC flammable
gases and vapours for Temperature Classes T1,
T2, T3 and T4 (rechargeable versions)
and Temperature Classes T1, T2 and T3
(replaceable battery versions).
Replaceable Battery
Rechargeable Battery
4
3. The equipment is certified for use in ambient
temperatures in the range –20°C to +55°C
(-4 to +131 F). The equipment should not be
used outside these temperature ranges. Toxic
and Oxygen sensors are not rated for continuous
operation at high temperatures greater than
40°C (104°F).
4. Compliance with Essential Health and Safety
Requirements has been assured by compliance
with EN60079-0; EN60079-1; EN60079-11
as certified by Baseefa. Compliance with gas
detection performance standards EN50054;
EN50057; EN61779-1; EN61779-4; EN50104 has
been certified by Lloyd’s Register. EMC compliance
to EN50270 has been certified by 3C Test Ltd.
5. Repair of this equipment and gas sensor
replacement shall be carried out by the
manufacturer or approved service centre in
accordance with the applicable code of practice.
6. If the equipment is likely to come into contact
with aggressive substances, then it is the
responsibility of the user to take suitable
precautions that prevent it from being adversely
affected, thus ensuring that the type of
protection is not compromised.
7. The rechargeable battery must only be charged
in non-hazardous (safe) areas by connection
to the specified Linde charger. Rechargeable
batteries can only be replaced by a Linde Group
Authorised Service Centre.
8. Only the following battery types may be fitted
in the battery compartment of the replaceable
battery pack: Duracell MN1500 (LR6), Varta
4006, Energizer LR6, GP 15A LR6 1.5V. Batteries
must only be changed in a non-hazardous (safe)
area. Users can only change non rechargeable
batteries in G-TECTA
®
4GP instruments.
9. The equipment is not certified for use in
atmospheres containing more than 21% Oxygen.
Area Classifications:
Zone 1: An area classified as Zone 1 is likely to have
ignitable concentrations of flammable gases, vapours
or liquids present under normal operating conditions.
Zone 2: An area classified as Zone 2 is not likely to have
ignitable concentrations of flammable gases, vapours or
liquids present under normal operating conditions.
G-TECTA® 4GP Portable Multi-Gas
Detection Instrument
Introduction
G-TECTA® 4GP is a premium, portable Multi-Gas
Detection Instrument, designed to be carried or
worn by individuals working in potentially hazardous
environments such as confined spaces. The
instrument is available with an internal pump or as a
diffusion only instrument. G-TECTA
®
4GP is certified
for use in classified hazardous areas and monitors
up to four different gases by displaying the readings
simultaneously on the instrument screen. Alarm
warnings are transmitted by means of a loud audible
alarm, a bright visual alarm of blue/red flashing LEDs
and an internal vibrating alarm.
Sensors
G-TECTA® 4GP can be specified with a wide range
of intelligent gas sensors. The sensor is fitted to
an intelligent processor which contains calibration
and sensor information. The G-TECTA
®
4GP can be
reconfigured at any time by replacing the precalibrated intelligent sensor(s) with alternative gas
types. Sensors should be replaced by trained service
personnel and are easy to fit using “plug and play”
technology. The intelligent sensor(s) are immediately
recognised by the instrument and are ready to use
after instrument calibration.
5
Key Features
G-TECTA® 4GP has been designed to be a reliable
and robust personal monitoring system, whilst being
compact, light and easy to use. The instrument is
water and dust tight to IP65 rating. The G-TECTA
®
4GP’s shape and design ensures high levels of user
comfort and minimal interference with the user’s
normal work function.
The non-slip grip and lockable
attachment clip ensure
secure handling and wear
ability and additional
accessories such as shoulder
straps and chest harness
allow flexible wearing options
if desired.
The G-TECTA
®
4GP has a single mode button and
a high quality display with automatic backlight. The
instrument continuously monitors the gas level in
the environment providing current, peak, and time
weighted average (TWA) readings for the user.
The G-TECTA® 4GP can be configured by utilising Linde
G-TECTA
®
PC software. Data and event logging can
also be downloaded and managed through a fast and
reliable optical communication link.
Software
The instrument software has been written in
accordance with IEC 61508 to ensure quality and
integrity in operation. The internal circuitry monitors
for any malfunction and will display an error warning
to the user in the unlikely event they occur.
Batteries
The G-TECTA® 4GP Portable Multi-Gas Detector
has two battery options: Li-ion rechargeable or nonrechargeable batteries.
Rechargeable Batteries
G-TECTA® 4GP uses a Li-ion battery pack and should
arrive with sufficient charge so that the unit can be
used straight out the box. However, to attain the full
operating time you should charge the battery. (The
actual operating time will depend on the types of
sensor installed.) The G-TECTA
®
4GP with pump is
designed to operate for at least 12 hours on a fully
charged battery.
WARNING
Only recharge the battery in a safe
(non-hazardous) area and with a Linde G-TECTA
®
4GP
charger. Failure to comply could invalidate safety
certification and may result in permanent damage
to the instrument.
Non-rechargeable Batteries
G-TECTA® 4GP uses a three AA (LR6) alkaline battery
pack and is designed to operate for 11 hours using
new batteries.
WARNING
G-TECTA® 4GP uses AA (LR6) batteries.
To maintain compliance with instrument certification,
ensure only the following battery types are used: GP
(15A), Energiser, Duracell and Varta (4006).Nonrechargeable Batteries
G-TECTA
®
4GP uses a three AA (LR6) alkaline battery
pack and is designed to operate for 11 hours using
new batteries.
WARNING
G-TECTA® 4GP uses AA (LR6) batteries.
To maintain compliance with instrument certification,
ensure only the following battery types are used: GP
(15A), Energiser, Duracell and Varta (4006).
6
G-TECTA® 4GP – Product Features
Operation
Switching on
The G-TECTA® 4GP is designed to be very easy to
operate. Please follow these simple steps to ensure
your instrument is ready for use:
Step 1
WARNING
Ensure the instrument is in clean air.
Step 2
Press and hold the mode button for approximately
2 seconds until the red LED flashes on the
instrument. The display screen will light up and
the instrument will begin its start up sequence.
G-TECTA® 4GP Start-Up Sequence
The instrument will test the alarm LEDs, the alarm
sounder, the vibration alarm and the display screen.
The sounder may be silenced by pressing the mode
button once.
The instrument will continue through a start up sequence
as shown below, this will take approximately 45 seconds.
During the start up sequence, check the battery
display to ensure you have enough charge to use
the instrument.
Note: During the start up sequence the next
calibration date will be displayed.
If the calibration due date has expired, the
G-TECTA
®
4GP instrument will display a warning
message that calibration is due. As a default the
instrument can still function, however the G-TECTA
®
4GP
can be configured to automatically shut down using
G-TECTA
®
PC software if required. The Linde Group
strongly recommends that instruments are calibrated
as soon as possible once the calibration date is due.
Auto Zero*
The Auto Zero function is enabled as a default
setting. During start-up, the instrument will display
Auto Zero and “????”. Press the mode button to
confirm the Auto Zero function.
5 – Sep – 2009
14 : 02 : 49
CAL
G-TECTA 4GP
v1.0
CH4 %LEL CO ppm
H2S ppm
O2 %
0.0
0.0
0
20.9
G-TECTA
4GP v1.0
G-TECTA 4GP v1.0
AUTO ZERO?
7 secs
? ? ? ? ? ? ?
5 – Sep – 2009
14 : 02 : 49
5 – Sep – 2009
14 : 02 : 49
CAL
Mode
Button
Alarm LEDs
Infra-red
Port
Gas Sensors
Sounder Outlet
Display
* This setting can be configured to operate automatically, on user
confirmation (default), or disabled, using G-TECTA
®
PC software
(see page 15).
7
Note: The instrument will time out in 10 seconds then
change to normal operating mode, without performing
an auto zero, if the mode button is not pressed.
Note: If Auto Zero fails, a warning message will be
displayed and an X will appear against the sensor
that has failed (See the Troubleshooting section if
this occurs).
Switching Off
Press and hold the mode button for 5 seconds,
the display will count down until the display shows
OFF. If you release the mode button during the
countdown, the G-TECTA
®
4GP will return to normal
operating mode.
Instrument Storage
In order to optimise sensor performance and lifetime,
your G-TECTA
®
4GP instrument should be stored in a
safe, non-hazardous area. The area should be clean
and dry, between temperature ranges 0-30°C, and
at a humidity level of 20-90%RH.
Normal Operation and Confidence Signals
The instrument will display up to four gas readings
and each channel will display the gas types, units
and current readings.
Always check the gas type being monitored
by your instrument and ensure you have been
trained in your site health and safety procedures.
Screen Icons
Confidence Signals
To give you added confidence the instrument
is operating correctly, the G-TECTA
®
4GP will
(every 10 seconds):
1 Sound a short beep
2. Flash a blue LED
In addition the “3” icon will flash on the display.
Display Symbols
Battery
When the battery is fully charged, the battery icon
will show 6 black bars. When the battery is empty,
the battery icon flashes and the instrument will
sound warning beeps.
WARNING
When the battery charge is
completely empty, G-TECTA
®
4GP will switch
off automatically.
Internal Pump
The revolving pump icon indicates that the internal
pump is operating. If the pump or airway becomes
blocked, the instrument will emit a warning sound and
will show an error message on the display. If a warning
is displayed, check the instrument, flow adaptor and
sample hose are free from dirt and water and that the
sample hose or probe is not kinked or blocked.
Note: To re-start the instrument, press the
mode button.
AUTO ZERO?
7 secs
? ? ? ? ? ? ?
CH4 %LEL CO ppm
H2S ppm
O2 %
0.0
0.0
0
20.9
AUTO ZERO
CH4
H2SCOO2
AUTO ZERO
CH4
H2SCOO2
CH4 %LEL CO ppm
H2S ppm
O2 %
0.0
0.0
0
20.9
!
!
Battery
Pump
Start Up
Flashing icon, G-TECTA® 4GP
in normal operating mode
8
Alarm
The TWA alarm for toxic gases will operate when the
short-term (15 minute) or long-term (8 hour) time
weighted average alarm levels are exceeded.
WARNING
TWA alarms cannot be cleared. TWA
alarms are functional for toxic gas instruments only.
Display Menu Options
The G-TECTA® 4GP menu is displayed
when you press the mode button twice.
There are up to 4 menu options including
the instrument home screen. To scroll
between the different options, press the mode
button once. To select the menu option you require,
double click on the selected icon. When the Peak
and TWA menu options are selected the relevant icon
will be displayed on the screen.
Peak
The Peak menu option displays the highest gas level
for flammable and toxic gases, or the lowest level
of oxygen, since the instrument was switched on or
was last reset.
After 5 seconds the instrument will display Clear
Peak and “????”. Press the mode button to confirm
the Clear Peak function. The instrument will count
down and time out in 10 seconds and change back to
Peak mode if the mode button is not pressed.
The Peak feature is mainly used for confined space
entry checks, where the instrument is lowered into a
potentially hazardous environment (instead of using
a sampling hose), and also for viewing peak gas
exposure at the end of a shift.
The TWA menu option displays the 8 hour time
weighted average reading for toxic gases since the
unit was last switched on.
Zero
The Zero menu option will reset the sensor in the
instrument. When the zero function has been
completed, the instrument will return to normal
operating mode.
WARNING
Always ensure you are in fresh air
when using this feature. Zeroing an instrument in a
contaminated atmosphere could result in incorrect
gas readings.
Alarms
G-TECTA® 4GP has two instantaneous alarm level
settings for each sensor – level 1 and level 2 –
and two additional Time Weighted Average (TWA)
alarms for toxic sensors.
Alarm Signals
The red and blue alarm LEDs will flash, the sounder
will emit a loud, fast series of beeps and the internal
vibrator alarm will activate. The display will show the
gas in alarm and the alarm level.
For any gas, there are normally 2 alarm levels*
– these are indicated by the alarm icons:
Zero
*
The instrument has 2 alarm levels to give the user an indication that the gas level may be rising. If any alarm warning is indicated by the
instrument the work area should be evacuated.
CH4 %LEL CO ppm
H2S ppm
%
0.0
0.0
0
16.7
O2
Alarm icon
Gas example
under alarm
Loading...