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RKI Instruments GX-8000 - User Manual

RKI Instruments GX-8000
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Portable Gas Monitor
GX-8000
Operating Manual
Part Number: 71-0390
Revision: P2
Released: 3/16/16
Request for the Customers
Read and understand this operating manual before using this gas monitor.
Use it in accordance with this operating manual.
Regardless of warranty period, we shall not make any indemnification for accidents and
damage caused by using this gas monitor.
Make sure to read the warranty policy specified on the warranty.
Because this is a safety unit, a regular maintenance for every six months and daily
maintenance must be performed.
If any abnormality is found in the gas monitor, notify it to RKI immediately.
(Visit our Web site to find your nearest RKI office.)

Questions and Answers

  • K
    Kelly BennettAug 18, 2025
    What to do if RKI Instruments Measuring Instruments displays 'FAIL BATTERY'?
    • M
      mooremelissaAug 18, 2025
      If your RKI Instruments Measuring Instruments displays a low battery voltage alarm ('FAIL BATTERY'), it means the battery level is low. For a Li-ion battery unit, turn off the power and recharge it in a non-hazardous area. If you have a dry battery unit, turn off the power and replace the dry batteries with new ones in a non-hazardous area.
  • T
    Tammy HardyAug 20, 2025
    What to do if RKI Instruments GX-8000 displays 'FAIL LOW FLOW'?
    • J
      Judith WilliamsAug 20, 2025
      If your RKI Instruments Measuring Instruments displays a low flow rate alarm ('FAIL LOW FLOW'), possible causes include: * Water or oil drawn in: Check the gas sampling hose for damage or signs of water or oil. * Clogged gas sampling hose: Inspect the hose for connections, clogging, or twisting. If these steps don't resolve the issue, the pump may have deteriorated, and you should contact RKI to replace the pump.
  • M
    Mark MyersAug 23, 2025
    Why does the reading on my RKI Instruments GX-8000 Measuring Instruments rise or drop and stay there?
    • J
      Jennifer TorresAug 23, 2025
      A persistent rise or drop in the reading on your RKI Instruments Measuring Instruments can be due to several factors: drifting of sensor output, presence of interference gas, a slow leak, or environmental changes. To address this, first perform the zero adjustment (fresh air adjustment). Keep in mind that disturbances by interference gases, such as solvents, cannot be eliminated completely. A very small amount of the gas to be detected may be leaking (slow leak). Because ignoring it may cause dangers, take a remedial measure, i.e., taking actions the same as those for the gas alarm. In particular, the galvanic cell type is affected by the air pressure.
  • D
    Diana McclureAug 26, 2025
    Why does my RKI Instruments Measuring Instruments trigger a gas alarm with no leak?
    • A
      Amanda FordAug 26, 2025
      If your RKI Instruments Measuring Instruments triggers a gas alarm when there is no gas leak or other apparent issues, it could be due to the presence of interference gas or disturbance by noise. Note that disturbances by interference gases, such as solvents, cannot be eliminated completely. Turn off and restart the gas monitor. If such a symptom is observed frequently, take appropriate measures to eliminate the noise.
  • E
    Elizabeth LivingstonAug 28, 2025
    Why is my RKI Instruments Measuring Instruments responding slowly?
    • D
      dixonmarkAug 28, 2025
      A slow response from your RKI Instruments Measuring Instruments can stem from a clogged dust filter (replace the dust filter), a bent or clogged suction or exhaust tube (fix the defective parts), condensation inside the suction tube (fix the defective parts), or deteriorated sensor sensitivity (replace the sensor unit with a new one).
  • L
    leah69Aug 30, 2025
    Why can't I recharge the batteries on my RKI Instruments GX-8000?
    • H
      hawkinschristopherAug 30, 2025
      If you're unable to recharge the batteries on your RKI Instruments Measuring Instruments (Li-ion battery unit only), first, check that the charger is properly connected to both the wall outlet and the device. If the connections are secure and the batteries have not been fully charged, contact RKI for repair.
  • C
    cummingsstevenSep 2, 2025
    Why is span adjustment impossible on RKI Instruments GX-8000 Measuring Instruments?
    • S
      Selena Johnson DDSSep 2, 2025
      If span adjustment is impossible on your RKI Instruments Measuring Instruments, it could be due to an improper calibration gas concentration (use the proper calibration gas) or deteriorated sensor sensitivity (replace the sensor unit with a new one).
  • T
    Timothy DixonSep 4, 2025
    What to do if RKI Instruments Measuring Instruments displays 'FAIL AIR CAL'?
    • D
      Dawn HendersonSep 5, 2025
      If your RKI Instruments Measuring Instruments displays 'FAIL AIR CAL', it means fresh air is not supplied around the gas monitor. Supply fresh air.
  • G
    Gary HughesSep 7, 2025
    What to do if RKI Instruments GX-8000 has abnormal operations?
    • A
      Alexis HallSep 7, 2025
      If your RKI Instruments Measuring Instruments is showing abnormal operations, it may be due to disturbances by sudden surge noise, etc. Turn off and restart the gas monitor.
  • M
    Mary AndersonSep 9, 2025
    What to do if key operations are disabled on RKI Instruments GX-8000?
    • W
      walshsusanSep 9, 2025
      If key operations are disabled on your RKI Instruments Measuring Instruments, it might be due to disturbances by sudden surge noise. In a non-hazardous area, remove the battery unit once, reinstall it, and turn on the power to perform operations.

Summary

Request for the Customers

Maintenance Requirements

Highlights the necessity of regular (six-monthly) and daily maintenance for this safety unit.

Safety Information

Critical Safety Warnings

Provides essential warnings regarding charging, battery replacement, and instrument modification in hazardous locations.

Important Notices on Safety

Danger Cases and Electrostatic Safety

Outlines critical dangers related to modifications, specific measurements, and electrostatic charge prevention.

Hazards in Confined Spaces

Warns about potential hazards from oxygen-deficient air or gas blowouts in confined spaces.

Warning Cases and Handling Precautions

General Precautions and Environmental Limits

How to Use

Basic Operating Procedures

How to Start the Gas Monitor

How to Detect

Air Calibration Mode

Operations and Functions

Gas Alarm Activation

Explains how gas alarms are triggered, displayed, and lists alarm types and setpoints.

Maintenance

Maintenance Intervals and Items

Outlines maintenance tasks, intervals, and items to check.

Calibration Mode

Preparing for Calibration

Lists required equipment and materials for performing calibration.

Fresh Air Adjustment (AIR CAL)

Guides through the process of performing fresh air adjustment for zero calibration.

Span Adjustment

Details how to perform span adjustment using calibration gas for all channels.

High Concentration Combustible Gas Sensor Zero Adjustment (VOL Z. CAL)

Storage and Disposal

Troubleshooting

RKI Instruments GX-8000 Specifications

General IconGeneral
BrandRKI Instruments
ModelGX-8000
CategoryMeasuring Instruments
LanguageEnglish

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