RKI Instruments GX-2009 Operator's Manual
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RKI Instruments GX-2009 Operator's Manual

Portable gas monitor
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See also: Instructions , User Manual
GX-2009
Portable Gas Monitor
Operator's Manual
Part Number: 71-0158RK
Revision: I
Released: 2/25/15
www.rkiinstruments.com

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Summary of Contents for RKI Instruments GX-2009

  • Page 1 GX-2009 Portable Gas Monitor Operator’s Manual Part Number: 71-0158RK Revision: I Released: 2/25/15 www.rkiinstruments.com...
  • Page 2 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...
  • Page 3 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.

  • Page 4: Table Of Contents

    Turning Off the GX-2009 ........
  • Page 5 Recharging the GX-2009’s NiMH Batteries......56 Replacing the GX-2009’s NiMH Batteries ......60 Checking the Combustible Gas Sensor’s Condition .

  • Page 6: Introduction

    The GX-2009 offers a full range of features, including: • Simultaneous four-gas monitoring and display of combustible gases, , CO, and H •...

  • Page 7: Specifications

    Specifications Table 1: Model GX-2009 Specifications Target Gas Combustibles, Oxygen (O Hydrogen Carbon Methane (CH4) Sulfide Monoxide calibration (CO) standard* Range 0-100% LEL 0-40.0 vol% 0-100.0 ppm 0-500 ppm (Increment) (1% LEL) (0.1 vol%) (0.5 ppm) (1 ppm) Detection Diffusion...
  • Page 8 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.

  • Page 9: Description

    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.

  • Page 10: Case

    Three brass charging contacts that are used 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: H S, CO, HC, and O2.

  • Page 11: Alligator & Belt Clips

    Belt Clip Figure 3: Alligator and Belt Clips The alligator clip can be used to attach the GX-2009 to clothing or a belt. Teeth in the alligator clip’s jaws prevent the unit from slipping off. The alligator clip can be rotated to change how the instrument is oriented when worn.

  • Page 12: Sensors

    The reaction of gas with oxygen on the catalyst causes a change in the resistance of the element which affects the current flowing through it. The current is amplified by the GX-2009’s circuitry, converted to a measurement of combustible gas concentration, and displayed on the LCD.

  • Page 13: Lcd

    GX-2009’s circuitry, converted to a measurement of gas concentration, and displayed on the LCD. The LCD (liquid crystal display) is visible through the GX-2009’s front window. Target gas concentrations, the time, battery condition, and alarm indications are displayed on the LCD. When either of the control buttons are pressed, the LCD backlight comes on for 30 seconds.

  • Page 14: Control Buttons

    • Adjusts or changes displayed parameters Printed Circuit Boards The primary function of the GX-2009’s printed circuit boards is to amplify the signal sent to them from the four gas sensors, convert the signal to a measurement of gas concentration, display the gas concentration on the LCD, store peak, STEL, and TWA readings, and activate the alarm circuit if an alarm point has been reached.

  • Page 15: Buzzer & Vibrator

    NiMH Batteries Two NiMH (nickel metal hydride) batteries, each with an integral holder, supply 2.4 volts to power the GX-2009. The batteries will run the unit for up to 20 hours when no alarms have been activated during that time period.
  • Page 16 AC Adapter Adapter Jack Charging Base Instrument Adapter Jack Retaining Tabs Charging Contacts Charge LED Rear View Top View Figure 4: GX-2009 Charging Station, Single Instrument Station 11 • Description GX-2009 Operator’s Manual...
  • Page 17 5 charging bases. The two instrument charging station is shown in Figure 5, and the five instrument station is shown in Figure 6. AC Adapter Adapter Jack Figure 5: GX-2009 Charging Station, Two Instrument Station AC Adapter Adapter Jack Figure 6: GX-2009 Charging Station, Five Instrument Station GX-2009 Operator’s Manual...
  • Page 18 It uses the same charging base as the AC powered charging station. Vehicle Plug DC Adapter Adapter Jack Charging Base Instrument Adapter Jack Retaining Tabs Charging Contacts Charge LED Rear View Top View Figure 7: GX-2009 DC Powered Charging Station 13 • Description GX-2009 Operator’s Manual...

  • Page 19: Start Up

    Start Up This section explains how to start up the GX-2009 and get it ready for operation. Start-up Procedure 1. Press and briefly hold down the POWER MODE button. The backlight will turn on and all the display segments will turn on. Release the button when you hear a beep.
  • Page 20 The GX- 2009 cannot be used until a bump test has been performed. See “Performing a Bump Test in BUMP” on page 41 for bump test procedures. 15 • Start Up GX-2009 Operator’s Manual...
  • Page 21 Warning setpoint (low gas alarm) for all channels • Alarm setpoint (high gas alarm) for all channels • STEL alarm setpoint for the CO and H2S channels • TWA alarm setpoint for the CO and H2S channels GX-2009 Operator’s Manual Start Up • 16...
  • Page 22 The gas reading for the failed sensor will be replaced by “- - -”. Replace the failed sensor as soon as possible. 9. If Auto Zero Adjustment is set to On, then the GX-2009 will perform an automatic fresh air adjustment.

  • Page 23: Performing A Fresh Air Adjustment

    Performing a Fresh Air Adjustment Before using the GX-2009, set the fresh air reading. Performing this adjustment ensures accurate gas readings in the monitoring environment as long as the calibration is current. 1. Find a fresh-air environment. This is an environment free of toxic or combustible gasses and of normal oxygen content (20.9%).

  • Page 24: Operation

    Normal Operation When the GX-2009 comes out of its startup sequence, see “Start Up” on page 14, it enters Measuring Mode and is in normal operation if no alarm indications are taking place. It is advisable to perform a fresh air adjustment when the GX-2009 comes out of its startup sequence as described in “Start Up”.
  • Page 25 To enter Display Mode and view items or reset the peak readings, do the following: 1. Make sure the GX-2009 is in the Measuring Mode Normal Operation screen. The GX-2009 must be in the Normal Operation Screen for you to access Display Mode.

  • Page 26: Combustible Gas Detection

    (CH4). If the instrument is calibrated to a different combustible gas, such as hexane or propane, the gas name for the combustible channel may be set to HC by using the GX-2009 Setup Program. See the GX-2009 Setup Program Operator’s Manual for information on how to set the combustible gas name.

  • Page 27: Alarms

    Alarms This section covers alarm indications. It also describes the two types of alarm logic, how to reset the GX-2009 after an alarm has occurred, and how to respond to an alarm condition. NOTE: False alarms may be caused by radio frequency (RF) or electromagnetic (EMI) interference.
  • Page 28 (low alarm) setpoint, or in the case of oxygen falls below the Warning setpoint, for that gas. The GX-2009 will also sound an alarm, the LEDs will flash, and the unit will vibrate when the Alarm (high alarm) setpoint is reached for any of the...
  • Page 29 Alarm Logic/Resetting Alarms The gas alarm logic can be set to either latching or self resetting with the GX-2009 Setup Program by setting the Alarm Pattern parameter. See the GX-2009 Setup Program Operator’s Manual for information on how to set the alarm logic.
  • Page 30 3. Reset the alarm using the POWER MODE button once the alarm condition has cleared. 4. Calibrate the GX-2009 as described in “Performing a Span Adjustment in AUTO CAL” on page 32 or “Performing a Span Adjustment in ONE CAL” on page 37.

  • Page 31: Aspirator Adapter

    56 The GX-2009 is fully functional during a low battery warning. However, depending upon conditions, the GX-2009 has only two or three hours of operating time left after the low battery warning has been triggered. Recharge the battery pack as soon as possible as described in “Recharging the GX-2009’s NiMH Batteries”...
  • Page 32 Probe Figure 8: GX-2009 Aspirator Adapter 1. Turn on the GX-2009 as directed in “Start Up” on page 14. 2. Attach the sample adapter plate to the sensor side of the instrument. 3. Screw the probe onto the threaded end of the 10 ft. hose.

  • Page 33: Data Logging

    2000, Windows XP, or Windows Vista. If your computer has an infrared port, then no additional accessories are needed to download data from the GX-2009. If your computer does not have an infrared port but does have a USB port, a USB/IrDA adapter cable can be used to download data from the GX-2003 using the USB port.

  • Page 34: Calibration Mode

    • Discharge the batteries with the REFRESH function NOTE: You can set the GX-2009 to alert you during the startup sequence when calibration or bump testing is due with the GX-2009 User Setup Program. See the GX-2009 User Setup Program Operator’s Manual for information on setting the Cal.

  • Page 35: Using Calibration Mode

    AIR CAL, AUTO CAL, ONE CAL, and BUMP TEST, there are no gas alarm indications. 1. Take the GX-2009 to a non-hazardous area and turn it off if it is on. 2. Press and hold the AIR button, then press and hold the POWER MODE button.

  • Page 36: Setting The Date & Time

    START 7. At the START screen, press and release the POWER MODE button. The GX-2009 will begin its start-up sequence. The Calibration Mode menu items are described below in the order in which they appear while moving through Calibration Mode.

  • Page 37: Performing A Span Adjustment In Auto Cal

    Normal Mode. The AIR CAL menu item is available in Calibration Mode for convenience when performing a complete calibration. WARNING: Calibrate the GX-2009 in a non-hazardous environment. 1. Find a fresh air environment, an environment of normal oxygen content (20.9%) that is free of toxic and combustible gasses.
  • Page 38 If the H2S channel on your GX-2009 is active, then use a 4-gas cylinder. If the H2S channel on your GX-2009 is not active, you may use a 3-gas cylinder to adjust the span. The standard 3-gas cylinder consists of 50% LEL methane, 12% oxygen, 50 ppm CO, and a balance of nitrogen.
  • Page 39 ESCAPE • Press and release the POWER MODE button to return to the screen that displays the calibration gas values. %LEL OXY vol% 12.0 CO ppm H2S ppm 25.0 AUTO CAL GX-2009 Operator’s Manual Calibration Mode • 34...
  • Page 40 4. Confirm that the regulator on/off knob is turned all the way clockwise (closed) and screw the calibration gas cylinder onto the regulator. 5. Push the adapter plate onto the GX-2009’s sensor face. Make sure the adapter plate is oriented as shown in Figure 10 below with the sensor names on the adapter plate matching up with the sensor names on the instrument.
  • Page 41 8. Allow the gas to flow for two minutes. 9. Press and release the POWER button. 10. The GX-2009 will attempt to make a span adjustment on all channels. 11. If the span adjustment is successful, the LCD will show the following screen before returning to the AUTO CAL screen.

  • Page 42: Performing A Span Adjustment In One Cal

    12% oxygen, 25 ppm H2S, 50 ppm CO, and a balance of nitrogen. If the H2S channel on your GX-2009 is active, then use a 4-gas cylinder so that you can calibrate all channels when necessary. If the H2S channel on your GX-2009 is not active, you may use a 3-gas cylinder.
  • Page 43 T u b i n g Adapter Plate Flow Figure 11: Calibration Kit Assembly 5. Confirm that the regulator on/off knob is turned all the way clockwise (closed) and screw the calibration gas cylinder onto the regulator. GX-2009 Operator’s Manual Calibration Mode • 38...
  • Page 44 6. Push the adapter plate onto the GX-2009’s sensor face. Make sure the adapter plate is oriented as shown in Figure 12 below with the sensor names on the adapter plate matching up with the sensor names on the instrument.
  • Page 45 12. The GX-2009 will make the span adjustment and will return to the channel selection screen. %LEL - - - ONE CAL The channel that was just span adjusted will be displayed. 13. If you want to span adjust additional channels, repeat Step 3 through Step 12 for each channel while gas is still flowing.

  • Page 46: Performing A Bump Test In Bump

    25 ppm H2S, 50 ppm CO, and a balance of nitrogen. If the H2S channel on your GX-2009 is active, then use a 4-gas cylinder. If the H2S channel on your GX-2009 is not active, you may use a 3-gas cylinder to perform the bump test.
  • Page 47 T u b i n g Adapter Plate Flow Figure 13: Calibration Kit Assembly 4. Confirm that the regulator on/off knob is turned all the way clockwise (closed) and screw the calibration gas cylinder onto the regulator. GX-2009 Operator’s Manual Calibration Mode • 42...
  • Page 48 5. Push the adapter plate onto the GX-2009’s sensor face. Make sure the adapter plate is oriented as shown in Figure 14 below with the sensor names on the adapter plate matching up with the sensor names on the instrument.
  • Page 49 BUMP See “Troubleshooting” on page 55 to investigate the cause of the failure and replace the failed sensor or sensors if necessary. • Turn the regulator on/off knob clockwise to close it. GX-2009 Operator’s Manual Calibration Mode • 44...
  • Page 50 %LEL OXY vol% CO ppm H2S ppm BUMP/CAL • To view the bump test gas readings, press the AIR button. %LEL OXY vol% 20.9 CO ppm H2S ppm BUMP/ 45 • Calibration Mode GX-2009 Operator’s Manual...

  • Page 51: Discharging The Batteries With The Refresh Function

    Entering the REFRESH menu item allows you to discharge the batteries. REFRESH If the GX-2009’s batteries are repeatedly only partially discharged before being charged or only partially charged before being discharged, the instrument’s runtime may be reduced. The NiMH batteries used in the GX-...
  • Page 52 2. To run the REFRESH function, press and release the POWER MODE button. The following screen will be displayed and the fill inside the battery icon will begin to flash. The GX-2009 is now discharging the batteries. d IS c h G.

  • Page 53: User Setup Mode

    AIR CAL, AUTO CAL, ONE CAL, and BUMP TEST, there are no gas alarm indications. 1. Take the GX-2009 to a non-hazardous area and turn it off if it is on. GX-2009 Operator’s Manual User Setup Mode • 48...
  • Page 54 8. When you need to adjust the numerical value of a parameter, increase it or decrease it, use the AIR button to change the value. When adjusting a numerical parameter value, it is possible to reverse the direction of 49 • User Setup Mode GX-2009 Operator’s Manual...

  • Page 55: Setting The Date & Time

    START 10. At the START screen, press and release the POWER MODE button. The GX-2009 will begin its start-up sequence. The User Setup Mode menu items are described below in the order in which they appear while moving through User Setup Mode.

  • Page 56: Setting The Alarm Points

    1. At the ALARM--P screen, press and release the POWER MODE button. The following screen will display showing the combustible channel. %LEL - - - ALARM--P 2. You can scroll through all the channels by pressing and releasing the AIR button. 51 • User Setup Mode GX-2009 Operator’s Manual...
  • Page 57 8. Repeat Step 2 through Step 7 for any other channels whose alarm points you want to change. 9. When you are done, scroll to the following screen. ESCAPE 10. Press and release the POWER MODE button to return to the ALARM--P screen. ALARM--P GX-2009 Operator’s Manual User Setup Mode • 52...

  • Page 58: Setting The Password

    5. Use the AIR button to scroll through the numbers 0 - 9. 6. When the desired number is displayed for the first digit, press and release the POWER MODE button to save the number. 7. The next digit will begin flashing. 53 • User Setup Mode GX-2009 Operator’s Manual...
  • Page 59 8. Repeat Step 5 through Step 7 until you have set all four of the digits. 9. When you save the last digit, the unit will return to the PASSWORD screen. PASSWORD GX-2009 Operator’s Manual User Setup Mode • 54...

  • Page 60: Maintenance

    Maintenance This section describes troubleshooting procedures for the GX-2009. It also describes how to recharge the GX-2009’s batteries, check the combustible sensor’s condition, replace the unit’s filters, sensor cover, and gas sensors. WARNING: RKI Instruments, Inc. recommends that service, calibration, and repair of RKI equipment be performed by personnel properly trained for this work.

  • Page 61: Recharging The Gx-2009'S Nimh Batteries

    RKI DC charger 49-2171RK. Use of other rechargeable batteries or chargers or charging of other rechargeable batteries in the GX-2009 will void the warranty. 1. Verify that the GX-2009 is off. 2. Confirm that the adapter’s DC output cord is plugged into the charger. If a multi-instrument charging station is being used, the same AC adapter is used as for the single instrument charging station.
  • Page 62 3. If using an AC powered charging station, plug the AC adapter into an electrical outlet. AC Power Supply Power Supply Jack To AC Outlet Charge LED AC Powered Charging Station Figure 15: Connecting the Charging Station’s AC Adapter 57 • Maintenance GX-2009 Operator’s Manual...
  • Page 63 If using a DC powered charging station, plug the 12 VDC vehicle plug adapter into a vehicle’s 12 VDC power socket. Power Supply Jack DC Adapter To Vehicle 12 VDC Charge LED Power Socket DC Powered Charging Station Figure 16: Connecting the Charging Station’s DC Adapter GX-2009 Operator’s Manual Maintenance • 58...
  • Page 64 4. Put the GX-2009 in the charging base. Tabs at the top and bottom of the charging base retain the instrument. Retaining Tabs GX-2009 POWER MODE %LEL Figure 17: Putting the GX-2009 in the Charging Base 5. While the unit is being charged, the red charging LED on the top face of the charger is on.

  • Page 65: Replacing The Gx-2009'S Nimh Batteries

    WARNING: Replace the batteries in a non-hazardous environment. Replace the battery set when it no longer holds a charge. 1. Verify that the GX-2009 is off. 2. Use a small phillips head screwdriver to remove the four screws that hold the two halves of the case together. They are accessible from the back of the instrument.
  • Page 66 Main Circuit Board Figure 21: NiMH Batteries 7. Remove each battery by gently pulling it away from the circuit board. Each battery has an integral holder that provides electrical connection to the circuit board. 61 • Maintenance GX-2009 Operator’s Manual...

  • Page 67: Checking The Combustible Gas Sensor's Condition

    If you are not able to adjust the combustible gas reading to be at least 10% higher than the calibration gas concentration, then the sensor should be replaced as soon as possible. GX-2009 Operator’s Manual Maintenance • 62...

  • Page 68: Replacing The Scrubber Filters

    1. Verify that the GX-2009 is off. 2. Unscrew the two screws that secure the sensor retainer and sensor cover retainer to the GX-2009 and remove them. 3. Using a small flat blade screwdriver, gently pry each side of the sensor cover retainer away from the sensor retainer.

  • Page 69: Replacing The Sensor Cover

    8. Replace the two screws that you removed in Step 2 above to secure the sensor retainer and sensor cover retainer to the GX-2009. Replacing the Sensor Cover WARNING: Replace the sensor cover in a non-hazardous environment.
  • Page 70 4. Remove the sensor from its socket. 5. Carefully insert the replacement sensor in the socket. Line up slots in H2S and CO sensors with tabs in case. Figure 25: Replacing the Sensors and Their Locations in the GX-2009 65 • Maintenance GX-2009 Operator’s Manual...
  • Page 71 7. Calibrate the new sensor as described in “Performing a Span Adjustment in AUTO CAL” on page 32 or “Performing a Span Adjustment in ONE CAL” on page 37. GX-2009 Operator’s Manual Maintenance • 66...

  • Page 72: Parts List

    Parts List Table 7 lists replacement parts and accessories for the GX-2009. Table 7: Parts List Part Number Description 06-1248RK-03 Calibration kit tubing, 3 foot length 07-6021RK Sensor retainer gasket 10-1098RK Screw with washers, for alligator or belt clip installation...
  • Page 73 49-2170RK-05 Charging station with AC adapter for five instruments, 115 VAC 49-2171RK Charging station with 12 VDC vehicle plug adapter 71-0158RK GX-2009 Portable Gas Monitor Operator’s Manual 71-0162RK GX-2009 User Setup Program Operator’s Manual 71-8002RK GX-2009 Product CD, includes Data Management Program, User Setup Program, and all operator’s manuals...
  • Page 74 Regulator, fixed flow, 0.5 LPM, 58/34 liter aluminum, 103 liter steel 81-1107RK Calibration/sample cap, rubber 81-1160RK Hand aspirated sampler, w/10’ hose, probe ES-1821 Carbon monoxide sensor ES-1827i Hydrogen sulfide sensor NC-6264A Combustibles sensor OS-BM2 Oxygen sensor 69 • Parts List GX-2009 Operator’s Manual...

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