RKI Instruments 72-0233RKC Operator'S Manual Download Page 21

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Model GX-2001 Operator’s Manual

Operation • 16

The table below summarizes the types of alarms produced by the Model
GX-2001.

Table 4: Alarm Types and Indications

Alarm Type

LCD Indications

Other Indications

Alarm 1

Concentration of gas
rises above the first
alarm point, or for O

falls below the low
point setting.

• Name of gas

displayed.

• Alarm light flashes

once per second.

• Back light turns on.
• Gas reading

flashes.

Pulsing tone once
per second
Unit vibrates once
per second

Alarm 2

Concentration of gas
rises above second
alarm point, or for O

rises above the high
point setting.

• Name of gas

displayed.

• Alarm light flashes

twice per second.

• Back light turns on.
• Gas reading

flashes.

Pulsing tone twice
per second
Unit vibrates twice
per second

TWA or STEL

Concentration of CO
or H

S rises above the

TWA or STEL alarm
point setting.

• Name of gas

displayed.

• Alarm light flashes

once per second.

• Back light turns on.
• TWA or STEL

blinking.

Pulsing tone once
per second
Unit vibrates once
per second

Over Range

• Name of gas

displayed.

• Gas reading

replaced by blinking
brackets.

• Alarm light flashes.
• Back light turns on.

Pulsing tone once
per second
Unit vibrates once
per second

Low Battery Warning

• Battery icon

flashes.

None

Dead Battery Alarm

• Gas reading

replaced by FAIL.

• Battery icon

flashes.

Double Pulsing Tone
(two pulses in quick
succession)

Summary of Contents for 72-0233RKC

Page 1: ...www rkiinstruments com Model GX 2001 Operator s Manual Part Number 71 0053RK Revision J Released 10 21 10...

Page 2: ...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...

Page 3: ...icates 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 T...

Page 4: ...ds 8 Alarm Lights 8 Buzzer Vibrator 9 Battery Pack 9 Belt Clip 9 Battery Charger 9 Start Up 10 Start up Procedure 10 Performing a Demand Zero 11 Turning Off the Model GX 2001 11 Operation 12 Normal Op...

Page 5: ...lacing the Battery Pack 33 Replacing the Scrubber Filters 35 Replacing the Sensor Cover 36 Replacing a Sensor 37 Rotating the Belt Clip 38 Parts List 39 WARNING Understand manual before operating Subs...

Page 6: ...ve audible vibrating alarms for dangerous gas conditions and audible alarms for unit malfunction Glow in the dark control buttons Microprocessor control for reliability ease of use and advanced capabi...

Page 7: ...5 vol Over 40 0 vol Alarm 1 10 ppm Alarm 2 30 ppm TWA 10 ppm STEL 15 ppm Alarm 1 25 ppm Alarm 2 50 ppm TWA 25 ppm STEL 200 ppm Operating Temperature and Humidity 10 to 40o C Below 85 RH Without Conden...

Page 8: ...Communication Computer Cable Communication Software Windows 95 98 NT Automatic Calibration Station Hand Aspirated Sample Draw with Hose and Probe Wrist Strap included with every unit Neck Strap Dimens...

Page 9: ...ronmental conditions indoors and out The unit is dust proof and weather resistant On the front of the case is a digital LCD which shows gas concentrations battery level time and other readings includi...

Page 10: ...f the case It has 4 diffusion ports one for each sensor and has recessed areas in it for the charcoal filter the H2S removal filters and the sensor cover The sensor cover retainer snaps onto the senso...

Page 11: ...ith an H2S absorbing material It fits into a recessed area of that port The CO sensor will respond if exposed to H2S and certain hydrocarbon gasses The charcoal filter scrubs these gasses out of the g...

Page 12: ...he dark 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 dat...

Page 13: ...ts located on top of the unit The alarm lights are two red LEDs that alert you to gas low battery and sensor failure alarms DISP Turns the LCD back light on Displays the next target gas when the unit...

Page 14: ...l GX 2001 detects a low battery voltage a low battery warning is activated The battery can be replaced by removing the belt clip on the back of the Model GX 2001 See the maintenance section of this ma...

Page 15: ...tery level is low or if the battery icon is flashing and the unit s buzzer sounds recharge the Model GX 2001 s battery 3 The four gas sensors inside the Model GX 2001 begin working and the concentrati...

Page 16: ...Mode press and hold the AIR button for about three seconds to allow the Model GX 2001 to set the zero reading for HC CO and H2S and to set the span for O2 While you are pressing the AIR button the LC...

Page 17: ...starting with O2 then H2S CO and HC Oxygen is displayed as a percentage H2S and CO as parts per million ppm and HC combustible gases as a percentage of the lower explosive limit LEL Displaying Peak R...

Page 18: ...e cleared the TWA is still calculated over eight hours with the missing time assigned a zero 0 value for the readings 1 Make sure the Model GX 2001 is in Measuring Mode The four target gasses should b...

Page 19: ...2001 is calibrated to methane To use this table multiply the display reading on the combustible gas channel by the factor in the appropriate row to obtain the actual gas concentration For example if y...

Page 20: ...alarm indications 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 NOTE False alarms m...

Page 21: ...point setting Name of gas displayed Alarm light flashes twice per second Back light turns on Gas reading flashes Pulsing tone twice per second Unit vibrates twice per second TWA or STEL Concentration...

Page 22: ...concentration of CO for 20 seconds then HC for three seconds etc If the TWA and STEL alarms are triggered alarm indications for both gasses occur at the same time The LCD would then display both TWA...

Page 23: ...eset 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 conti...

Page 24: ...re continues replace the sensor as described in Replacing a Sensor 4 If the sensor failure condition continues after you have replaced the sensor contact RKI Instruments Inc for further instructions A...

Page 25: ...release the aspirator bulb 15 times Monitor the readings and note if any alarms occur The readings will peak shortly after the last squeeze and may decrease before all the channels can be checked To...

Page 26: ...points and their factory settings are summarized in the table below In the table above Alarm 1 and Alarm 2 for HC CO and H2S refer to a rising concentration of these gasses The first alarm is triggere...

Page 27: ...wed by H2S CO then HC Use the AIR button to increase the alarm point and the DISP button to decrease the alarm point When using the MODE POWER button press it once to display the next reading If you p...

Page 28: ...and date values You can only change a value if it is flashing Use the AIR button to increase a value Use the DISP button to decrease a value NOTE Once you have cycled though the time and date values t...

Page 29: ...he unit should still be calibrated periodically The optimum frequency of calibration depends heavily on how the GX 2001 is used For example instruments used daily may need to be calibrated weekly or m...

Page 30: ...1 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 RKI Instruments Inc are available fo...

Page 31: ...s recommend that you start with the oxygen sensor first followed by the H2S CO and HC sensors in that order The reason for this calibration sequence is that while the Model GX 2001 is in Calibration M...

Page 32: ...ulator automatically begins introducing the calibration sample to the sensors 6 Let the gas flow for two minutes before adjusting the span 7 Use the AIR button to in increase the reading and the DISP...

Page 33: ...a flow rate of 0 5 LPM and non absorbent tubing 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...

Page 34: ...t be changed to match a cylinder concentration the datalogging software must be used so the Datalogging Charger Station 49 2156RK must be used 6 Press the MODE POWER button to proceed The current gas...

Page 35: ...Troubleshooting The troubleshooting table describes error messages symptoms probable causes and recommended action for problems you may encounter with the Model GX 2001 Table 6 Troubleshooting the Mod...

Page 36: ...filter disk or the charcoal filter disk over the CO sensor are saturated The sample gas is not reaching the sensor because of a bad connection The calibration cylinder may be out of gas or is outdated...

Page 37: ...loading See Parts List for more information 3 Place the Model GX 2001 in the battery charger 4 While the unit is being charged the red LED on the top face of the charger is on 5 When the red LED turns...

Page 38: ...ll pins holding the belt clip to the unit by grasping them with your fingers 4 Unscrew the four screws holding the metal plate to the back of the Model GX 2001 then remove the plate 5 Carefully press...

Page 39: ...01 before inserting the top Inserting the top of the battery first before the bottom may damage the circuit board underneath 7 Replace the screws small pins metal plate and belt clip in reverse order...

Page 40: ...also used in the CO sensor diffusion port It is installed over the charcoal filter disk One H2S removal filter disk is also located in the combustible gas diffusion port 6 When the appropriate scrubb...

Page 41: ...the Model GX 2001 and remove them 3 Using a small flat blade screwdriver gently pry each side of the sensor cover retainer away from the sensor retainer 4 Remove the sensor cover then insert the repla...

Page 42: ...ts socket 4 Carefully insert the replacement sensor in the socket CAUTION When replacing a sensor verify that the sensor is properly aligned with its socket before inserting it into the socket The CO...

Page 43: ...the calibration section of this manual Rotating the Belt Clip 1 On the same side if the unit remove two of the 4 screws that retain the belt clip retaining pins 2 Grasp the pins and slide them out 3 R...

Page 44: ...33 0158RK Sensor cover water proof 33 7106RK Charcoal filter disk 10 pack for CO diffusion port 33 7114RK Filter disk H2S scrubber 5 pack for combustible diffusion port 49 1602RK Ni cad battery pack 4...

Page 45: ...minum 81 0154RK 04 Four gas calibration cylinder 50 LEL CH4 12 O2 50 ppm CO 25 ppm H2S 34 liter aluminum 81 1003RK Regulator fixed flow 0 5 LPM 17 34 liter steel 81 1004RK Regulator fixed flow 0 5 LPM...

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