Riken Keiki GX-8000 User Manual (English)

Questions and Answers:

C
Curtis CortezSep 7, 2025
What to do if my Riken Keiki Measuring Instruments reading rises or drops and remains so?
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  Katelyn BrownSep 7, 2025
  If the reading on your Riken Keiki Measuring Instruments rises or drops and stays that way, it could be due to drifting of the sensor output. Try performing a zero adjustment (fresh air adjustment). It might also be caused by the presence of interference gas or environmental changes, in both cases perform the zero adjustment (fresh air adjustment). 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.
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Ashley CollinsAug 23, 2025
How to turn on Riken Keiki GX-8000?
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  Yolanda MartinezAug 25, 2025
  If your Riken Keiki Measuring Instruments won't turn on, the battery level might be too low. If you are using Li-ion batteries, recharge them in a non-hazardous area. If you are using dry batteries, replace all three with new ones. Also, make sure to press and hold the POWER switch until you hear a beep (about two seconds).
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Kristin HarrisAug 25, 2025
What to do if Riken Keiki GX-8000 display 'FAIL LOW FLOW'?
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  zwhiteAug 25, 2025
  If your Riken Keiki Measuring Instruments display 'FAIL LOW FLOW', it could be due to several reasons. First, check the sampling hose for any signs of water or oil. Also, inspect the sampling hose for any blockages, twists, or incorrect connections. If these steps don't resolve the issue, the pump may have deteriorated, and you should contact your dealer or Riken Keiki local representative to replace the pump.
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Douglas EwingAug 26, 2025
Why does my Riken Keiki GX-8000 display 'FAIL AIR'?
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  joseph18Aug 27, 2025
  If your Riken Keiki Measuring Instruments display 'FAIL AIR', it could be due to a lack of fresh air around the gas monitor. Ensure a supply of fresh air. If the issue persists, the sensor sensitivity may have deteriorated, requiring you to contact your dealer or Riken Keiki local representative to replace the sensor.
S
Sandy GloverAug 27, 2025
What to do if water remains in the buzzer sound hole of Riken Keiki Measuring Instruments?
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  victoriamontoyaAug 27, 2025
  If water remains in the buzzer sound hole of your Riken Keiki Measuring Instruments, it's likely that water was splashed on it. Thoroughly wipe away any moisture with a dry towel or cloth. Additionally, hold the device firmly and shake it with the buzzer sound hole facing downward to remove any trapped water.
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Diana GriffinAug 28, 2025
What does 'FAIL SENSOR' mean on Riken Keiki Measuring Instruments?
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  Trevor GomezAug 29, 2025
  If your Riken Keiki Measuring Instruments display 'FAIL SENSOR', it indicates a sensor failure. Contact your dealer or Riken Keiki local representative to replace the sensor. (Only at the initial time, press the RESET switch to continue the operation using only the normal sensors.)
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Jared MasonSep 13, 2025
Why won't my Riken Keiki Measuring Instruments batteries charge?
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  Charles SmallSep 13, 2025
  If your Riken Keiki Measuring Instruments batteries won't charge (Li-ion battery unit only), ensure the AC powered charger is properly connected to both the wall outlet and the jack. If the connections are correct, a charging circuit abnormality might have occurred, in which case, request RIKEN KEIKI for repair. Also, if the batteries have been fully charged, the charging indicator lamp will not turn on when charging again.
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Jessica BenjaminSep 14, 2025
What causes span adjustment to be impossible on Riken Keiki GX-8000 Measuring Instruments?
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  Kurt AlvaradoSep 14, 2025
  Span adjustment may be impossible on your Riken Keiki Measuring Instruments due to an improper calibration gas concentration. Make sure to use the proper calibration gas. If the issue persists, the sensor sensitivity may have deteriorated, requiring you to replace the sensor unit with a new one.
Y
Yvonne SmithSep 5, 2025
What to do if Riken Keiki GX-8000 key operations are disabled?
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  James ReidSep 5, 2025
  If key operations are disabled on your Riken Keiki Measuring Instruments, it might be due to disturbances from sudden surge noise. In a non-hazardous area, remove the battery unit once, reinstall it, and then turn the power back on.
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ymorrisonSep 3, 2025
Why does my Riken Keiki GX-8000 Measuring Instruments power not turn on?
- H
  Heather GonzalezSep 3, 2025
  Your Riken Keiki Measuring Instruments might not power on due to several reasons. The battery level could be too low; if you have a Li-ion battery unit, charge the batteries in a non-hazardous area. Alternatively, with a dry battery unit, replace all three dry batteries with new ones in a non-hazardous area. Ensure you press the power switch long enough (until you hear a beep, about two seconds). Also, verify the battery unit is properly attached to the main unit.

Riken Keiki GX-8000 Specifications

General

Display	LCD with backlight
Operating Humidity	0 to 95% RH (non-condensing)
Ingress Protection	IP67
Communication	USB
Gas Type	O2, H2S, CO
Detection Principle	Catalytic combustion, Electrochemical cell
Power Source	Rechargeable battery
Operating Temperature	-20°C to 50°C (-4°F to 122°F)
Alarm Set Points	User adjustable
Response Time	Within 30 seconds
Certifications	ATEX, IECEx, CSA
Alarms	Visual, Audible, and Vibration
Data Logging	Yes
Detection Range	Combustibles: 0-100% LEL, CO: 0-500 ppm, H2S: 0-100 ppm

Summary

Outline of the Product

Preface

Introduction to the portable gas monitor GX-8000 and its manual.

Purpose of use

Details the intended use of the gas monitor for detecting combustible gases.

Definition of DANGER, WARNING, CAUTION, and NOTE

Explains the meaning of safety-related terms used in the manual.

Important Notices on Safety

Danger cases

Details critical safety hazards and precautions to avoid severe damage or injury.

Warning cases

Outlines potential dangers and necessary precautions to prevent moderate damage or injury.

Precautions

Provides essential precautions for safe operation and handling of the gas monitor.

Safety information

Provides explosion-proof specifications, electrical data, and certificate numbers for safety compliance.

Product Components

Main unit and standard accessories

Lists and describes the main unit and standard accessories included with the gas monitor.

Names and functions for each part

Identifies and explains the function of each part of the gas monitor using an outline drawing.

How to Use

Before using the gas monitor

Key precautions and checks to perform before operating the gas monitor for the first time.

Preparation for start-up

Steps for preparing the gas monitor for use, including attaching and charging batteries.

Basic operating procedures

Explains the normal detection mode and transitions to other modes like Air Calibration.

How to start the gas monitor

Step-by-step guide on how to power on and initialize the gas monitor.

How to detect

Instructions on how to perform gas detection and read the display, including manual memory.

Modes

Details various operating modes including Detection, Air Calibration, and Display/Setting modes.

Air calibration mode

Procedure for performing fresh air calibration to ensure accurate readings.

Display/setting mode

Allows modification of displays and settings, including peak values and alarm setpoints.

How to exit

Instructions on how to properly power off the gas monitor, including a purge operation.

Operations and Functions

Gas alarm activation

Details how gas alarms are triggered, displayed, and their types (WARNING, ALARM, OVER).

Fault alarm activation

Explains fault alarms triggered by system abnormalities, sensor issues, or low battery.

Other functions

Briefly mentions calibration history and trend functions, requiring contact with RIKEN KEIKI.

Maintenance

Maintenance intervals and items

Outlines daily, monthly, and regular maintenance tasks and their recommended intervals.

Gas calibration method

Details procedures for span adjustment using calibration gas and cautions against using lighter gas.

How to clean

Instructions for cleaning the gas monitor and its sampling hose, including precautions.

Parts replacement

Information on replacing consumables like sensors, dust filters, and regular replacement parts.

Storage and Disposal

Procedures to store the gas monitor or leave it for a long time

Guidelines for storing the gas monitor under specific environmental conditions to maintain its functionality.

Procedures to use the gas monitor again

Instructions for recalibration and checks when the gas monitor is used after storage.

Disposal of products

Guidance on properly disposing of the gas monitor and its batteries as industrial waste.

Troubleshooting

Abnormalities on Unit

Lists common symptoms, causes, and actions for unit-related malfunctions and errors.

Abnormalities of Readings

Details causes and remedies for incorrect or unusual readings from the gas monitor.

Product Specifications

List of specifications

Provides detailed technical specifications for the gas monitor, including Japanese and overseas standards.

List of accessories

Lists standard and optional accessories available for the gas monitor.

Definition of Terms

Related product manuals

Riken Keiki GX-3R Pro

Riken Keiki 04 Series

81 pages

Riken Keiki GX-8000 User Manual

Table of Contents