RKI Instruments GX-2009 User manual

www.rkiinstruments.com
GX-2009
Portable Gas Monitor
Operator’s Manual
Part Number: 71-0158RK
Revision: I
Released: 2/25/15

GX-2009 Operator’s Manual
WARNING
Read and understand this instruction manual
before operating instrument. Improper use of
the gas monitor could result in bodily harm
or death.
Periodic calibration and maintenance of the
gas monitor is essential for proper operation
and correct readings. Please calibrate and
maintain this instrument regularly!
Frequency of calibration depends upon the
type of use you have and the sensor types.
Typical calibration frequencies for most
applications are between 1 and 3 months, but
can be required more often or less often
based on your usage.

GX-2009 Operator’s Manual Warranty
Warranty RKI Instruments, Inc. warrants the GX-2009 sold by us to be free from
defects in materials, workmanship, and performance for a period of two
years from the date of shipment from RKI Instruments, Inc. This includes
the instrument and the original sensors. Replacement parts are warranted
for 1 year from the date of their shipment from RKI Instruments, Inc. Any
parts found defective within their warranty period will be repaired or
replaced, at our option, free of charge. This warranty does not apply to
those items which by their nature are subject to deterioration or
consumption in normal service, and which must be cleaned, repaired, or
replaced on a routine basis. Examples of such items are:
Warranty is voided by abuse including mechanical damage, alteration,
rough handling, or repair procedures not in accordance with the instruction
manual. This warranty indicates the full extent of our liability, and we are
not responsible for removal or replacement costs, local repair costs,
transportation costs, or contingent expenses incurred without our prior
approval.
THIS WARRANTY IS EXPRESSLY IN LIEU OF ANY AND ALL OTHER WARRANTIES
AND REPRESENTATIONS, EXPRESSED OR IMPLIED, AND ALL OTHER OBLIGATIONS
OR LIABILITIES ON THE PART OF RKI INSTRUMENTS, INC. INCLUDING BUT NOT
LIMITED TO THE WARRANTY OF MERCHANTABILITY OR FITNESS FOR A
PARTICULAR PURPOSE. INNO EVENT SHALL RKI INSTRUMENTS, INC. BE LIABLE
FOR INDIRECT, INCIDENTAL, OR CONSEQUENTIAL LOSS OR DAMAGE OF ANY KIND
CONNECTED WITH THE USE OF ITS PRODUCTS OR FAILURE OF ITS PRODUCTS TO
FUNCTION OR OPERATE PROPERLY.
This warranty covers instruments and parts sold to users only by
authorized distributors, dealers, and representatives as appointed by RKI
Instruments, Inc.
We do not assume indemnification for any accident or damage caused by
the operation of this gas monitor and our warranty is limited to replacement
of parts or our complete goods.
Absorbent cartridges
Filter elements, disks, or sheets
Pump diaphragms and valves

Table of Contents GX-2009 Operator’s Manual
Table of Contents
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1
Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
Case . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Alligator & Belt Clips . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Sensor Retainer/Sensor Retainer Gasket/Sensor Cover Retainer. . . . . . . . . . . . 6
Scrubber Filters/Sensor Cover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Sensors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
LCD. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Control Buttons . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Printed Circuit Boards. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Alarm LED Arrays . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Buzzer & Vibrator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
NiMH Batteries . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Charging Station . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Start Up. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
Start-up Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Performing a Fresh Air Adjustment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Turning Off the GX-2009. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Normal Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Display Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Combustible Gas Detection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Alarms. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Aspirator Adapter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Data Logging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
GX-2009 Setup Program . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Calibration Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Using Calibration Mode. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Setting the Date & Time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Performing a Fresh Air Adjustment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Performing a Span Adjustment in AUTO CAL. . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Performing a Span Adjustment in ONE CAL. . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Performing a Bump Test in BUMP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Discharging the Batteries With the REFRESH Function. . . . . . . . . . . . . . . . . . . 46

GX-2009 Operator’s Manual Table of Contents
User Setup Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
Using User Setup Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
Setting the Date & Time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
Performing a Fresh Air Adjustment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
Performing a Span Adjustment in AUTO CAL. . . . . . . . . . . . . . . . . . . . . . . . . . . 50
Performing a Span Adjustment in ONE CAL. . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
Setting the Alarm Points . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
Setting the Password . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
Maintenance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
Recharging the GX-2009’s NiMH Batteries. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
Replacing the GX-2009’s NiMH Batteries. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
Checking the Combustible Gas Sensor’s Condition. . . . . . . . . . . . . . . . . . . . . . 62
Replacing the Scrubber Filters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
Replacing the Sensor Cover. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
Replacing a Sensor. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
Parts List. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .67
WARNING: Understand manual before operating. Substitution of
components may impair intrinsic safety. To prevent
ignition of a hazardous atmosphere, batteries must only
be changed or charged in an area known to be
nonhazardous. Not tested in oxygen enriched
atmospheres (above 21%).
NOTE: RKI Instruments, Inc. recommends that you refer to ISA-RP12.13,
Part II-1987 or an equivalent international recommended practice
for guidance in the use of combustible gas detection instruments.

1 • Introduction GX-2009 Operator’s Manual
Introduction
Using an advanced detection system consisting of four gas sensors, the
GX-2009 personal four-gas monitor detects the presence of combustible
gas, oxygen (O2), carbon monoxide (CO), and hydrogen sulfide (H2S)
simultaneously. The GX-2009’s compact size and easy-to-use design
makes it ideally suited for a wide range of applications, including sewage
treatment plants, utility manholes, tunnels, hazardous waste sites, power
stations, petrochemical refineries, mines, paper mills, drilling rigs, and fire
fighting stations. The GX-2009 offers a full range of features, including:
• Simultaneous four-gas monitoring and display of combustible gases,
O2, CO, and H2S
• Backlit LCD (liquid crystal display) for complete and understandable
information at a glance
• Distinctive audible/vibrating alarms for dangerous gas conditions and
audible alarms for unit malfunction
• Microprocessor control for reliability, ease of use, and advanced
capabilities
• Resistance to RF (radio frequency) interference
• Datalogging including interval trend data and alarm trend data
• STEL/TWA and over range alarm display
• Peak hold readouts
• Built-in time function
• Lightweight and compact high impact plastic case
• Rotatable alligator clip for “hands-free” gas monitoring, belt clip optional
• CSA classified for Class I, Division I, Groups A, B, C, and D hazardous
atmospheres
WARNING: The GX-2009 detects oxygen deficiency and elevated
levels of oxygen, combustible gases, carbon monoxide,
and hydrogen sulfide, all of which can be dangerous or
life threatening. When using the GX-2009, you must
follow the instructions and warnings in this manual to
assure proper and safe operation of the unit and to
minimize the risk of personal injury. Be sure to maintain
and periodically calibrate the GX-2009 as described in
this manual.
NOTE: Only the combustible gas detector portion of this instrument has
been assessed for performance.

GX-2009 Operator’s Manual Specifications • 2
Specifications
Table 1: Model GX-2009 Specifications
Target Gas Combustibles,
Methane (CH4)
calibration
standard*
Oxygen (O2) Hydrogen
Sulfide
(H2S)
Carbon
Monoxide
(CO)
Range
(Increment) 0-100% LEL (1% LEL) 0-40.0 vol% (0.1 vol%) 0-100.0 ppm (0.5 ppm) 0-500 ppm (1 ppm)
Detection
Method Diffusion
Response
Time T90 Within 30 Seconds
Accuracy ±5% ofreading
or ± 2% LEL
(whichever is
greater)
± 0.5% O2± 5% of
reading or
± 2 ppm H2S
(whichever is
greater)
± 5% of
reading or
± 5 ppm CO
(whichever is
greater)
Display Digital LCD
Gas Alarms
(Factory
Settings)
Alarm 1: 10%
LEL
Alarm 2: 50%
LEL
Over: 100%
LEL
Alarm 1: 19.5
vol%
(Decreasing)
Alarm 2: 23.5
vol%
Over: 40.0
vol%
Alarm 1: 5.0
ppm
Alarm 2: 30.0
ppm
Over: 100.0
ppm
TWA: 1.0 ppm
STEL: 5.0 ppm
Alarm 1: 25
ppm
Alarm 2: 50
ppm
Over: 300 ppm
TWA: 25 ppm
STEL: 200
ppm
Operating
Temperature
and Humidity
-20 to 50oC/Below 85% RH (Without Condensation)
Safety/
Regulatory C US
186718
CSA classified, “C/US”, as Intrinsically Safe. Exia. Class I, Groups A,
B, C, & D. Class I, Zone 0, Group IIC. Temperature Code T3C.
Power Supply NiMH Batteries (2.4 VDC Nominal), Direct Charging

3 • Specifications GX-2009 Operator’s Manual
NOTE: The bump test function in Calibration Mode is included in
instruments with firmware version 03955 or later installed. See
page 41 for a description of the bump test function. GX-2009
instruments shipped after May 2011 include the bump test
function. Instruments that have a serial number starting with
04516 or later shipped from the factory with the bump test function
available. Instruments that have a serial number starting with
04515 did not include the bump test function when shipped from
the factory. The factory setting for the bump test function is off.
Continuous
Operating
Hours
Up to 20 Hours (Non Alarm Operation After Full Charge)
Charge Time 3 hours for a full charge
Case High-impact Plastic, Dust and Water Resistant to IP-67
Required
Accessories AC or DC Charging Station, AC Charging Station Available For From 1 to 5 Instruments
Other
Accessories • IrDA/USB cable for downloading data to computer
• GX-2009 Data Logger Management Program (Windows®2000,
XP, Vista)
• GX-2009 Setup Program (Windows®2000, XP, Vista)
• Automatic Calibration Station
• Hand Aspirated Sample Draw Adapter with Hose and Probe
• Wrist Strap (included with every unit)
Dimensions
and Weight Dimensions: 2.7 H, 3.0 W, 1.0 D inches Approx. 70 H, 75 W, 25 D mm
Weight: 4.6 oz.
*The GX-2009 is also available set up for general hydrocarbons and calibrated to a
combustible gas other than methane, such as isobutane. Consult RKI Instruments,
Inc. for further information.
Table 1: Model GX-2009 Specifications

GX-2009 Operator’s Manual Description • 4
Description
This section describes the GX-2009’s components and the charging
station. These components include the GX-2009’s case, alligator and belt
clips, sensor retainer, sensor retainer gasket, sensor cover retainer,
scrubber filters, sensor cover, sensors, LCD, control buttons, printed circuit
boards, alarm LED arrays, buzzer, vibrator, batteries, and charging station.
POWER
MODE
AIR
LED Arrays
Front Buzzer
Sound Opening
IR Port
Top Buzzer
Sound Opening
H2SCO%LELO
2
RKI GX-2009
Sensor Diffusion Port, 4X
Control Buttons
Wrist Strap
Sensor Retainer
LCD
Sensor Cover, OverAll
Sensors
Sensor Cover Retainer
Figure 1: GX-2009, Front & Bottom View

5 • Description GX-2009 Operator’s Manual
Case
The GX-2009’s sturdy, high-impact plastic case is suitable for use in many
environmental conditions, indoors and out. The unit is dust proof and water
resistant. Rubber overmolded surfaces on much of the case help protect it
from impact damage and aid in holding the instrument in your hand.
A clear plastic window through which the LCD can be viewed is located on
the front of the case. Three brass charging contacts that areused when the
GX-2009 is placed in the charging station are on the back of the case. Four
sensor diffusion ports are located on the bottom of the case. The ports are
labelled as follows from left to right: H2S, CO, HC, and O2. Three frosted
windows, one on the left side, one of the right side, and one on top, cover
alarm LED arrays. There are two buzzer sound openings, one on the front
below the LCD and one on the top behind the top LED array. An IR
(infrared) communication port is located on the top left side which is used
to transfer information when the instrument is used with one of the
calibration or downloading accessories.
There are three threaded inserts on the back of the case. These are used
to mount the alligator clip or the optional belt clip.
Threaded Inserts
Battery Charging Contacts
Figure 2: GX-2009 Rear View