Related Manuals for Riken Keiki GX-2001
Summary of Contents for Riken Keiki GX-2001
- Page 1 Model GX-2001 Operator’s Manual 2 -7 - 6 A z u s a w a I t a b a s h i- k u T o k y o , ...
- Page 2 Warranty RIKEN KEIKI CO., LTD.., warrants gas alarm equipment sold by us to be free from defects in materials and workmanship, and performance for a period of one year from date of shipment from RIKEN KEIKI CO., LTD.. Any parts found defective within that period will be repaired or replaced, at our option, free of charge.
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Page 3: Table Of Contents
Battery Charger.................... 5 Start Up ..................6 Start-up Procedure ..................6 Performing a Demand Zero ................6 Turning Off the Model GX-2001 ..............6 Operation..................7 Normal Operation ..................7 Displaying Peak Readings................7 Displaying STEL and TWA Readings ..............8 Alarms ....................... - Page 4 Calibration ..................14 Setting the Zero Readings for All Target Gasses ..........14 Single Calibration ..................14 Auto Calibration...................16 Maintenance................. 18 Troubleshooting...................18 Recharging the Ni -cad Battery Pack ...............19 Replacing the Ni-cad Battery Pack ..............19 Replacing the Sensor Cover ................20 Replacing a Sensor..............................20...
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Page 5: Introduction
The Model GX-2001 offers a full range of features, including: Simultaneous four-gas monitoring of combustible gases, O , CO, and H... -
Page 6: Specifications
Specifications Table 1 : Model GX -2001 Specifications Model Name Model GX -2001 Target Gas Combustibles Oxygen (O2) Hydrogen Sulfide Carbon Monoxide (HC, CH4, etc.) (H2S) (CO) Range 0-100% LEL 0-40.0 vol% 0-150 ppm 0-300 ppm (Increment) (1% LEL) (0.1 vol%) (0.5 ppm) (1 ppm) Detection Method... -
Page 7: Description
The reaction of gas with oxygen on the catalyst causes a change in the resistance of the element. The current is amplified by the Model GX-2001’s circuitry, converted to a measurement of combustible gas concentration, and displayed on the LCD. -
Page 8: Lcd
Below the LCD are the control buttons. These buttons are MODE/POWER, DISP, and AIR. They turn on the power to the Model GX-2001, and turn it off. They control what is displayed on the LCD, including battery level, time, date, and year, gas concentrations, peak, TWA, and STEL readings, as well as other messages. -
Page 9: Printed Circuit Boards
Model GX-2001. Ni-cad Battery Pack Inside the Model GX-2001 is a Ni-cad battery pack that supplies 2.4 V to the unit. The battery will run the unit for approximately 12 hours when no alarms have been activated during that time period. -
Page 10: Start Up
Start Up This section explains how to start up the Model GX-2001 and to get it ready for operation. Start-up Procedure 1. Press and hold the MODE/POWER button for one second to turn on the Model GX- 2001 and to activate its LCD. The alarm lights flash and the buzzer sounds. -
Page 11: Operation
Normal Operation After you have powered up the Model GX-2001 and performed a demand zero for the four target gasses following the instructions of the previous section, “Start Up,” the Model GX - 2001 is in Measuring Mode. -
Page 12: Displaying Stel And Twa Readings
This section covers alarm indications, or the types of alarms you will encounter when using the Model GX-2001, including multiple alarms and trouble alarms. It also tells you how to reset the Model GX-2001 after an alarm has occurred and how to respond to an alarm condition. - Page 13 The table below summarizes the types of alarms produced by the Model GX-2001. Table 3 : Alarm Type LCD Indications Other Indications Alarm 1 • Name of gas displayed. Pulsing Tone • Alarm light flashes. Unit Vibrates Concentration of gas rises above the first alarm point, •...
- Page 14 3. Reset the alarm using the MODE/POWER button once the alarm condition has cleared. 4. Calibrate the Model GX-2001 as described in the calibration section of this manual. 5. If the over range condition continues, you may need to replace the sensor that has triggered the over range alarm.
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Page 15: Displaying And Setting The Alarm Points
Responding to Battery Alarms WARNING: The Model GX-2001 is not operational as a gas monitoring device during a dead battery alarm. Take the Model GX-2001 to a non- hazardous area and recharge the battery as described in “Recharging the Ni-cad Battery.”... - Page 16 Figure Alarm Adjustment Mode NOTE: If the LCD should show “CAL,” the Model GX-2001 is in Calibration Mode. You will need to press and hold the MODE/POWER button to turn off the unit. Begin again with step 2 above. 4. Use the MODE/POWER button to cycle through the alarm points of the target gasses.
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Page 17: Setting The Time And Date
2 above to put the unit back into Time Adjustment Mode. 4. To leave Time Adjustment Mode, press the MODE/POWER button to cycle through to the end of the time and date values. The Model GX-2001 then enters Start-up Mode followed by Measuring Mode. -
Page 18: Calibration
Calibration This section covers the calibration of the Model GX-2001. Setting the zero reading is described first followed by single calibration and auto calibration. For single calibration, you are told what is needed to complete the task, how to assemble the calibration kit, and how to set the span readings of the four target gasses. - Page 19 NOTE: Do not attach the regulator to the gas cylinder at this time. If you are going to calibrate the Model GX-2001 for all the target gasses at one time, it is recommend that you start with the oxygen sensor first followed by the H S, CO, and HC sensors in that order.
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Page 20: Auto Calibration
Before you calibrate the Model GX -2001, you must set the zero readings as described in “Setting the Zero Readings for All Target Gasses.” You will also need the supplies listed below. Calibration kits from RIKEN KEIKI CO., LTD.. are available for this purpose (see “Parts List”). - Page 21 Setting Up the Model GX-2001 for Auto Calibration WARNING: Calibrate the Model GX-2001 in a non-hazardous environment. 1. Attach the adapter plate to the unit. 2. Attach the calibration tubing to the adapter plate, then attach the opposite end of the tubing to the regulator.
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Page 23: Maintenance
Maintenance This section describes troubleshooting procedures for the Model GX -2001. It also describes how to recharge the Model GX-2001’s Ni-cad battery as well as how to replace the unit’s battery, sensor cover, and gas sensors. Troubleshooting The troubleshooting table describes error messages, symptoms, probable causes, and recommended action for problems you may encounter with the Model GX-2001. -
Page 24: Replacing The Ni-Cad Battery Pack
WARNING: Replace the Ni-cad battery in a non-hazardous environment. 1. Verify that the Model GX-2001 is off. 2. On the left or right side of the Model GX-2001, unscrew two of the screws securing the belt clip retaining pins to the unit. -
Page 25: Replacing The Sensor Cover
5. Place the sensor retainer in its original position, then secure it to the Model GX-2001 with the two screws you removed in step 2. 6. Start up the Model GX-2001 by pressing and holding the MODE/POWER button. 7. Calibrate the new sensor as described in the calibration section of this...
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