Enotec COMTEC 6000 ATEX GasEx

Questions and Answers

K
Kenneth OchoaAug 2, 2025
What to do if the O2 display on Enotec COMTEC 6000 ATEX GasEx is higher than expected?
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  Laura BellAug 2, 2025
  If the O2 display on your Enotec Measuring Instruments is consistently at the maximum reading or higher than anticipated, check for leaks at the measuring probe or the O sensor flange seal. Ensure all flanges and screw connections are properly tightened. If necessary, replace the O sensor or the O sensor flange seal. If the leak is located around the O sensor, the O2 sensor should be replaced. Also, verify that the probe flange is welded gas tight, and if not, tighten the flange bolts to the correct torque or replace the gasket.
S
Steven SanchezAug 10, 2025
How to fix unsteady O2 readings on Enotec COMTEC 6000 ATEX GasEx Measuring Instruments?
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  bowmantinaAug 10, 2025
  If you observe an unsteady and widely varying O2 measuring value on your Enotec Measuring Instruments, there are several potential causes. It could be due to intermittent contact caused by wire breakage. In this case, you should eliminate any bad or loose contacts. Another cause could be intermittent contact inside the probe, specifically within the internal mV connection. A broken filter element can also lead to this issue, which can be identified through visual inspection by dismounting the probe. Additionally, ensure the V-shield is correctly installed and that the probe has been installed with a filter head.
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Michael PetersAug 14, 2025
Why are O2 readings high and COe readings low on Enotec COMTEC 6000 ATEX GasEx?
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  Alfred MccarthyAug 14, 2025
  If the O2 readings are higher than expected and the COe readings are lower than expected on your Enotec Measuring Instruments, it may be due to a poor seal of the CO sensor coupling located in the e terminal box housing. Ensure the stainless steel nut is tight to prevent ambient air from entering the CO sensor mounting tube. Tighten or replace the CO sensor coupling assembly. If the issue persists, recalibrate the device.
M
Melissa BellAug 19, 2025
What to do if Enotec COMTEC 6000 ATEX GasEx local displays are correct but the output is not?
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  crawfordnancyAug 19, 2025
  If the local displays on your Enotec Measuring Instruments are correct, but the output is not, the electronic unit may be defective. Check the measuring range to ensure the current value is not outside of it. Additionally, measure the mA output on the strip terminal.
J
Justin MillsAug 23, 2025
Why is there no COe value and an arrow on Enotec COMTEC 6000 ATEX GasEx Measuring Instruments?
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  anorrisAug 25, 2025
  If there is no COe measuring value and an arrow is displayed instead of a value on your Enotec Measuring Instruments, it could be due to the physical measuring range being exceeded. Perform an O + COe sensor check. Additionally, an error may have occurred with the COe sensor, so check all electrical connections.
C
Christine DavisAug 27, 2025
Why is there no O2 value and an empty bar graph on Enotec COMTEC 6000 ATEX GasEx?
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  rgreenAug 28, 2025
  If there is no measuring value for O2 and an empty bar graph is displayed on your Enotec Measuring Instruments, the O2 value may be out of the range of the electronic unit. This can be caused by a low O2 concentration in connection with a high COe concentration. Perform an O + COe sensor check.
E
emily43Nov 5, 2025
Why does my Enotec Measuring Instruments O2 display indicate 0%?
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  adunnNov 5, 2025
  If the O2 display on your Enotec Measuring Instruments reads 0% when a higher value is expected, several issues could be the cause. First, check the measuring probe heater by disconnecting the probe and verifying the resistance is approximately 37.5-47.5 Ohm. Also, check the measuring cell temperature, which should be set to 800°C/1472°F, as a lower temperature can cause a 0% reading. Additionally, inspect the thermocouple for defects by checking its resistance (approximately 2-80 Ohm), and measure the mV value of the O2 measuring cell. Replace the fuse if it is defective. Check the wiring and measure the probe cable for any short circuits or wire breaks. Verify the transformer (230/115V) is not defective by checking its fuse. Ensure there is good mV contact in the probe and that the measu...

Summary

System Description

System Overview

Provides a visual overview of the system components and their layout.

Measuring Principles

Explains the fundamental working principles of the O2 and COe sensors.

Explosion Protection

Details the ATEX certification and zones for the system's explosion protection.

Intended Use

Specifies the intended application and scope of the analyzer system.

Safety Hazards

Outlines potential safety risks associated with the system's operation.

Disruption of the Process

Discusses the impact of process disruptions on the analyzer's lifespan.

Storage instructions

Provides guidelines for the proper storage of ENOTEC equipment and spares.

Name Plates

Describes the information found on the name plates of the electronic unit and probe.

ATEX Certification - Probe

Presents the ATEX certification details for the probe component.

ATEX Certification - Electronics

Provides the ATEX certification details for the electronic unit.

Installation

Installation Requirements for electronic unit

Details essential requirements for installing the electronic unit.

Installation of probe signal cable FEP-0007;8

Guides on the correct installation of the probe signal cable.

Access to the terminals

Explains how to access the terminal connections for wiring.

Wiring diagrams of COMTEC 6000 GasEx (SME-5 D and EX probe)

Illustrates the wiring diagrams for the electronic unit and probe.

Ferrite Sleeves

Explains the use and fitting of ferrite sleeves to avoid cable disturbances.

Terminal connections of the COMTEC 6000

Details the terminal connections for the COMTEC 6000 electronic unit.

Installation of the probe

Provides instructions for the correct installation of the measuring probe.

Mounting of the Counter Flange at the Duct

Guides on mounting the counter flange to the duct.

Adjustment of the Probe Filter Head V-Shield

Details how to adjust the probe filter head V-shield.

Mounting the protection tube at the flange

Explains the process of mounting the protection tube at the flange.

Insulation with cooling protection tube

Describes the insulation procedures for the cooling protection tube.

Electrical connections at the Probe

Shows the electrical connections for the measuring probe.

Pneumatic connections at the Probe

Details the pneumatic connections for the probe.

Requirements for pneumatic cable FEP-0002

Outlines the requirements for the pneumatic cable FEP-0002.

Preparation of the pneumatic cable

Guides on preparing the pneumatic cable for connection.

Connection of the pneumatics

Explains how to connect the pneumatic systems.

Initial Operation

Checklist before commissioning the system

Lists crucial checks before putting the system into operation.

System Power Up

Describes the procedure for powering up the system.

Display - Probe Heating Phase

Explains the display during the probe's heating phase.

Display - Measuring Mode

Details the display information during the measuring mode.

Keypad and Display

Describes the functions of the keypad and display unit.

Status LEDs

Explains the meaning of the status LED indicators.

Softkey Symbols

Illustrates the symbols used for softkeys.

System Code

Provides information on the system code for access control.

Menu Overview and Explanations

Menu Overview - SYS-MENU

Provides a hierarchical overview of the SYS-MENU options.

System clock;TAG number

Covers settings for system clock, date, time, and TAG number.

ENOTEC REMOTE settings (optional)

Explains the configuration options for ENOTEC REMOTE.

Measuring units

Details how to set measurement units for temperature and pressure.

Probe type and cable length

Covers settings related to probe type and cable length.

Language

Explains how to select the display language.

Change system code

Procedure for changing the system access code.

Load factory settings

Explains how to restore the system to factory default settings.

Set COe measurement ON;OFF

Details how to enable or disable the COe measurement function.

Service (Contact ENOTEC)

Information on contacting ENOTEC for service.

Limit alarms

Configuration options for setting O2 and COe limit alarms.

O2 sensor calibration values

Allows adjustment of O2 sensor calibration parameters.

COe measuring range

Configuration of the measuring range for COe values.

COe sensor calibration values

Allows adjustment of COe sensor calibration parameters.

Calibration settings

Configuration options for automatic and manual calibration.

Menu Explanations - SYS-MENU

Detailed explanations of the SYS-MENU system configuration options.

O2 Measuring Ranges (Scaling)

Explains how O2 measuring ranges are scaled to current output.

Limit alarm settings

Details how to configure limit alarm thresholds and hysteresis.

O2 Sensor calibration values

Information on altering O2 sensor calibration values.

Measuring value averaging for (O2 and COe)

Sets the duration for continuous average measurement.

mA output on system errors (O2 and COe)

Configures mA output values for system errors.

COe Measuring Ranges (Scaling)

Explains how COe measuring ranges are scaled to current output.

COe Sensor Calibration values

Details COe sensor calibration values and test certificates.

Time per test gas apply

Sets the maximum duration for applying test gas or air.

Delay time to process

Sets delay for holding last measured value after calibration.

Pre-purge time

Defines sensor flush duration before calibration.

Automatic Calibration (ACAL)

Configuration and operation of automatic calibration features.

ENOTEC REMOTE

Details ENOTEC REMOTE connection and usage.

Measuring units

Allows setting units for temperature and pressure.

Language

Explains how to select the display language.

Change system code

Procedure for changing the system access code.

Load factory settings

Restores system to default factory settings.

Set COe measurement to off;on

Manages the COe measurement function for sensor replacement.

Service (Factory Service Settings)

Access to password-protected factory service functions.

Menu Overview - System Checks

Overview of system checks for O2, mA outputs, relay outputs, and inputs.

O2 Sensor checks

Performs checks on the O2 sensor under various gas sources.

Check mA outputs

Verifies the mA output signals from the system.

Check relay outputs

Tests the status of the system's relay outputs.

Check digital inputs

Verifies the status of the system's digital inputs.

Menu Overview - Calibration Menu

Navigation to calibration options for O2 and COe sensors.

Calibration Menu - Display Overview

Explains the display elements during calibration processes.

1-point calibration (O2 and;or COe) (manual)

Manual procedure for 1-point calibration of O2 and COe sensors.

2-point calibration (O2 and;or COe) (manual)

Manual procedure for 2-point calibration of O2 and COe sensors.

Service and Maintenance

Exchange fuses

Step-by-step guide for safely exchanging system fuses.

Pressure and Flow rates for Test Air and;or Reference Air

Specifies required pressure and flow rates for calibration air.

Adjusting the Flow Rate - SME 53

Details how to adjust reference and test air flow rates on SME 53.

Position of the adjustment valves (SME-53)

Shows the location of adjustment valves on the SME-53 terminal cover.

Adjusting the Flow Rate (19 Rack SME-54)

Guides on adjusting flow rates for 19" rack SME-54 units.

Adjusting the Flow Rate at the Pneumatic Unit

Instructions for adjusting flow rates on pneumatic units.

Replacing the Filter Head

Procedure for safely replacing the probe's filter head.

Replacing the Probe

Step-by-step instructions for replacing the entire probe.

Replacing the Probe Inner Part

Details on replacing the internal components of the probe.

Replacing the O2 sensor

Guide for safely replacing the O2 sensor.

Replacing the COe Sensor

Instructions for safely replacing the COe sensor.

Seal the COe sensor guide tube

Procedure for sealing the COe sensor guide tube when removed.

Relay Outputs; Functions and Correlation

Explains relay outputs, functions, and their correlations.

Status Messages

Error Messages

Lists and explains various error messages the system may display.

Alarm Messages

Details alarm messages and their potential causes.

Service Messages

Explains messages related to system maintenance or service.

Heater Control Unit

Information on the heater control unit and its status indicators.

Troubleshooting

Unsteady, widely varying measuring value (O2)

Addresses issues with unstable O2 measurements.

O2 display remains at the end of the measuring range or is higher than expected

Troubleshooting for high or maxed O2 readings.

Local Displays correct, Output not correct

Resolving discrepancies between display and output signals.

O2 Display Indicates 0%, although the Process Operation Mode expects a higher O2 Value

Diagnosing zero O2 readings when higher values are expected.

O2 reads higher than expected, and COe reads lower than expected

Addresses mixed readings for O2 and COe.

No COe-Measuring Value; Arrow instead of a value

Troubleshooting for missing COe measurement values.

No Measuring Value for O2; empty Bar Graph

Diagnosing missing O2 measurement values.

Technical data

Technical Specifications SME-5 D

Detailed technical specifications for the SME-5D electronic unit.

Technical Specifications SME-53

Detailed technical specifications for the SME-53 electronic unit.

Technical Specifications - Probes

Technical specifications for the KEX600x probes.

Requirements for the gas supply

Specifies requirements for instrument air and test gas supply.

Dimensional drawings of the Electronics

Provides dimensional drawings for SME-5D and SME-53 housings.

Dimensions (mm) of the electronic unit in 19 rack SME-54

Dimensional drawings for the 19" rack SME-54.

Dimensions (mm) GFK housing SME-56... (Optional)

Dimensional drawings for the optional GFK housing.

Pneumatic Unit

Housing dimensions and gas connections for pneumatic units.

Gas plans

Illustrates gas flow diagrams for pneumatic units.

SME-53 Gas plans

Gas flow diagrams specific to the SME-53 pneumatic versions.

Dimensional drawing of probe KEX600 x

Dimensional drawing of the KEX600x probe without cooling tube.

Dimensional drawing of probe KEX600 x with cooling protection tube

Dimensional drawing of the KEX600x probe with cooling tube.

Protection Tube Flanges

Dimensions of protection tube flanges for KEX600x probes.

Counter flanges

Dimensions of counter flanges for probe mounting.

Dimensions of counter flange ADP-6000-S01

Dimensional drawing of counter flange ADP-6000-S01.

Dimensions of counter flange ADP-6000-S02

Dimensional drawing of counter flange ADP-6000-S02.

Probe components

Exploded view and part list of probe components for KEX600x.

Probe inner part

Detailed diagram of the probe's inner components.

Overview of the Mounting Plate in Ex Housing

Shows the layout of components on the Ex electronic unit mounting plate.

Mounting Plates - Safe Area Housing

Details mounting plates for safe area housing versions.

Mounting Plate 2 (Instrument air version)

Components on mounting plate 2 for instrument air version.

Mounting Plate 2 (Pump version)

Components on mounting plate 2 for pump version.

19 Rack - SME-54

Mounting plates for the 19" rack SME-54 unit.

Mounting plate (Instrument air, Version A and Version 1)

Components for SME-54 instrument air mounting plate.

Mounting plate (with Pumps)

Components for SME-54 pump version mounting plate.

Display Board

Information on the display and microprocessor unit.

Warranty

ENOTEC WARRANTY

Details ENOTEC's warranty terms and conditions.

Declaration of Conformity - Probe

Declaration of EC conformity - Electronics