Koeng KEG-500 User Manual

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KOENG Co., Ltd. 1302, DIGITAL EMPIRE, 1130, BEOMAN-RO, GEUMCHEON-GU, SEOUL, KOREA

Tel: +82-2-838-6300 / Fax: +82-2-839-4700 / export@koeng.com

AUTOMOTIVE GAS ANALYZER

KEG-500

OPERATION MANUAL

Table of Contents

Questions and Answers:

P
patricia57Aug 17, 2025
What to do if Koeng Measuring Instruments shows 'Unable to measure'?
- W
  wturnerAug 17, 2025
  If the measuring value stays at "0" and does not change, ensure that the device has warmed up completely. Wait until the rdy mode is active before starting measurement. Also, make sure you press the measurement key in rdy mode. Check the connection between the probe and the analyzer, verifying the connection status between the probe and hose (gas inlet). Finally, inspect the probes, hoses, and filters for any blockages, as water-icing can occur, especially in the winter.
J
Johnathan JohnsonAug 20, 2025
What to do if Koeng KEG-500 Measuring Instruments shows 'Flow ERR'?
- L
  lauren48Aug 20, 2025
  If you encounter a 'Flow ERR' message, it indicates a flow error. Check the probes, hoses, and filters for any blockages. This is a common issue.

Koeng KEG-500 Specifications

General

Brand	Koeng
Model	KEG-500
Category	Measuring Instruments
Language	English

Summary

Safety Instructions

2-3. Caution and warning

Provides critical safety warnings and precautions for operation to prevent accidents.

Introduction of KEG-500

3-1 Specification

Details technical specifications of the KEG-500 analyzer, including ranges and measurements.

3-3. Front view and description

Explains the components and displays on the front panel of the analyzer.

3-4 Rear view and description

Details the connectors, ports, and inlets/outlets on the rear of the analyzer.

Circuits of KEG-500

4-1 Measuring principal

Explains the NDIR and electrochemical methods used for gas analysis in the KEG-500.

4-2 Guiding diagram

Provides a system diagram illustrating the flow of gases and key components within the analyzer.

4-3 Electrical circuit diagram

Shows the internal electrical connections and layout of the KEG-500 analyzer.

Installation Methods and Notes

5-1 Installation

Details the physical connection steps for setting up the KEG-500 analyzer.

5-2 Notes

Provides important considerations and precautions for analyzer placement and handling.

Measurement Mode

6-1. Warming- Up

Describes the initialization and warm-up sequence before measurement operations begin.

6-3. Purge

6-4. Zero calibration

Details the steps for performing zero calibration to ensure measurement accuracy.

6-5. Measurement

Guides on how to perform gas measurements using the KEG-500 analyzer.

Selection Mode

7-2. Leak test

7-3. Remaining HC test

7-4. Selection of fuel

7-5. HCV and OCV setup

7-9. NOx setup

Standard Gas Calibration

7-10-1. Precautions for the standard gas calibration

7-10-3. Connection method

7-10-4. Standard gas calibration

Provides the step-by-step procedure for performing the standard gas calibration.

Fault diagnosis and troubleshooting

Fault diagnosis and troubleshooting

Lists common faults, verification steps, and corresponding troubleshooting solutions for the analyzer.