Eranntex MS104K-M Carbon Monoxide Detector for Industrial Safety Malaysia
Eranntex MS104K-M Carbon Monoxide Detector for Industrial Safety Malaysia
Carbon monoxide is a colourless and odourless toxic gas commonly produced when fuel does not burn completely.
Workers cannot see or smell CO. A suitable gas detector is therefore required where carbon monoxide may accumulate.
The Eranntex MS104K-M portable multi-gas detector can be configured with a CO sensor together with other gases for factory maintenance, confined-space entry and industrial safety monitoring.
Where Does Carbon Monoxide Come From?
Possible CO sources include:
Generators
Boilers
Furnaces
Vehicle exhaust
Petrol or diesel engines
Forklifts
Welding and hot work
Fires and smoke
Heaters
Poorly maintained combustion equipment
Incomplete combustion inside process systems
Risk increases when combustion equipment operates in a poorly ventilated or enclosed area.
Why Is Carbon Monoxide Dangerous?
Carbon monoxide interferes with the body’s ability to transport oxygen.
Exposure may cause symptoms such as:
Headache
Dizziness
Weakness
Nausea
Confusion
Loss of coordination
Unconsciousness
These symptoms can be mistaken for tiredness or illness. Personnel should not rely on physical symptoms to identify a hazardous atmosphere.
Any suspected exposure should be managed according to the organisation’s emergency and medical procedures.
Why Use CO with Other Gas Sensors?
Carbon monoxide may not be the only hazard.
A commonly selected MS104K-M configuration includes:
CO: Carbon monoxide
O₂: Oxygen
EX: Combustible gas
H₂S: Hydrogen sulphide
This allows one instrument to monitor several common industrial and confined-space hazards simultaneously.
The final gas combination should always follow the workplace risk assessment.
CO Monitoring in Boiler Rooms
Carbon monoxide may be generated when boiler combustion is incomplete.
Possible contributing conditions include:
Poor ventilation
Blocked flue or exhaust
Incorrect burner adjustment
Insufficient combustion air
Equipment malfunction
Exhaust recirculation
Fuel-system problems
A portable detector can support inspection and maintenance, but it does not replace fixed monitoring, ventilation or proper boiler servicing where these controls are required.
CO Monitoring Around Generators
Running a generator indoors or near an air intake can allow exhaust gases to accumulate.
CO may enter:
Generator rooms
Basements
Temporary work enclosures
Utility rooms
Adjacent offices
Underground spaces
Poorly ventilated work zones
Technicians should assess the complete area rather than measure only beside the generator.
CO During Welding and Hot Work
Hot work can change atmospheric conditions, especially inside tanks and confined spaces.
Carbon monoxide may be generated during certain combustion and welding activities. Oxygen and combustible-gas risks may also be present.
Monitoring may therefore be required before and throughout the work according to the hot-work permit and safety procedure.
Diffusion Mode for Personal CO Monitoring
In diffusion mode, the MS104K-M measures the air surrounding the worker.
For personal monitoring, the detector should be:
Positioned within the breathing zone
Exposed to the surrounding atmosphere
Visible or audible to the user
Kept away from obstruction by clothing
Checked according to the site procedure
The detector should accompany the worker rather than remain at the entrance to the work area.
Pump Sampling for Remote Locations
When the suspected atmosphere cannot be approached safely, the external pump can draw a sample through a hose or probe.
Possible applications include:
Tank pre-entry testing
Manhole inspection
Underground chamber checks
Enclosed machinery spaces
Boiler or process-vessel inspection
Investigation behind a barrier
Allow sufficient time for the gas sample to travel through the hose and reach the sensor.
What Measuring Range Is Required?
The required CO range depends on whether the detector is used for:
Personal exposure monitoring
Confined-space safety
Leak investigation
Combustion troubleshooting
Emergency response
High-concentration process measurement
Do not select a range only because it has a higher maximum value.
A range that is too broad may not provide the resolution required for low-level monitoring. The expected concentration and alarm requirements should be confirmed before ordering.
CO Sensor Cross-Sensitivity
Electrochemical CO sensors may respond to certain interfering gases.
The actual cross-sensitivity depends on the sensor model and technology.
Customers should inform MTM Precision if the workplace contains:
Hydrogen
Solvents
Alcohol vapours
Other toxic gases
Unusual process chemicals
Technical confirmation may be necessary when interfering substances are expected.
Why Does the CO Reading Not Return to Zero?
Possible causes include:
CO remains in the area
Poor ventilation
Gas trapped inside the sampling hose
Sensor recovery after high exposure
Contaminated filter or tubing
Incorrect fresh-air adjustment
Calibration drift
Ageing sensor
Cross-sensitive gas
Sensor fault
Move the detector to a known clean atmosphere and follow the required checking procedure.
Do not automatically zero the detector if the surrounding air cannot be confirmed as clean.
What If the CO Alarm Activates?
If a CO alarm occurs:
Follow the site’s emergency procedure
Leave the affected area
Do not ignore or silence the alarm
Warn nearby personnel
Stop the suspected source where authorised and safe
Improve ventilation where appropriate
Investigate from a safe location
Retest before allowing work to resume
The detector provides a warning but does not remove the source of carbon monoxide.
Bump Test and Calibration
A bump test confirms that the CO sensor and alarms respond when exposed to test gas.
Calibration verifies and adjusts measurement accuracy using certified reference gas.
The MS104K-M may require calibration or technical inspection after:
A failed bump test
Sensor replacement
Over-range CO exposure
Long-term storage
Physical damage
Unstable readings
Scheduled calibration expiry
A detector that fails its functional check should be removed from safety use.
Common CO Monitoring Mistakes
Avoid:
Depending on smell
Assuming open doors provide enough ventilation
Leaving the detector outside the worker’s breathing zone
Using the wrong CO measuring range
Recording a pump sample too quickly
Ignoring cross-sensitivity
Zeroing in an unknown atmosphere
Skipping bump tests
Continuing work after an alarm
Assuming a normal oxygen reading means CO is absent
Oxygen and carbon monoxide are separate measurements.
Information Required for a CO Detector Quotation
Provide:
Workplace and application
Expected CO source
Required CO measuring range
Other gases to be monitored
Diffusion or pump-sampling requirement
Sampling distance
Number of detectors
Required accessories
Calibration or documentation requirements
This allows the detector to be configured according to the actual risk.
Why Choose MTM Precision?
MTM Precision supplies gas detectors, environmental monitoring instruments, industrial testing equipment and safety measurement solutions throughout Malaysia.
Our team can assist with:
CO detector selection
Multi-gas sensor configuration
Measuring-range confirmation
Factory and confined-space application matching
Diffusion and pump-sampling requirements
Sampling accessories
Product quotation and availability
Basic operating guidance
After-sales and technical coordination
Request an Eranntex MS104K-M Quotation
Tell MTM Precision where the carbon monoxide may come from and which additional gases need to be monitored.
We can help determine whether a CO-equipped MS104K-M is suitable for the application.
Contact MTM Precision
MTM Precision Sdn Bhd
Showroom & Service Centre
No. 29-1 & 29-2, Jalan Bandar 18,
Pusat Bandar Puchong,
47160 Puchong, Selangor, Malaysia.
Website: www.mtmpre.com.my
WhatsApp: +6016-660 7346
Email: mtmpre@yahoo.com
We support customers throughout Selangor, Kuala Lumpur, Johor, Penang, Melaka, Negeri Sembilan, Perak, Pahang, Kedah, Perlis, Terengganu, Sabah and Sarawak.
14 Sep 2026
