CO Gas Detector for Confined Space OTYWELL G10S-CO Malaysia
CO Gas Detector for Confined Space OTYWELL G10S-CO Malaysia
Carbon monoxide can be one of the gas hazards considered during confined-space work, particularly where combustion equipment, engines, generators or other CO-producing sources are involved.
The OTYWELL G10S-CO Portable Single Gas Detector provides dedicated carbon monoxide measurement for applications where CO is the identified target gas.
However, an important question must be answered before selecting any detector:
Does your confined space require CO monitoring only, or must several gases be monitored at the same time?
Why Can CO Be Dangerous in a Confined Space?
Carbon monoxide is colourless and odourless, making it impossible to rely on smell or visual observation as a warning method.
Potential sources may include:
Engines
Generators
Fuel-burning equipment
Combustion processes
Exhaust gases
Hot work
Equipment operating near enclosed areas
Restricted ventilation can make gas accumulation particularly important when evaluating confined-space hazards.
OTYWELL G10S-CO Measuring Range
The G10S-CO configuration supplied for carbon monoxide monitoring has a range of:
CO: 01000 ppm
The instrument is intended for portable monitoring where carbon monoxide is the required target gas.
Is a CO-Only Detector Enough for Confined Space Work?
Not necessarily.
This is one of the most important considerations when selecting a confined-space gas detector.
A G10S-CO measures carbon monoxide only. It does not automatically tell the worker about oxygen deficiency, hydrogen sulphide, combustible gas or another hazard.
Depending on the workplace risk assessment, confined-space procedures may require monitoring several parameters.
For example, a job may require checking:
O Oxygen
CO Carbon Monoxide
HS Hydrogen Sulphide
LEL/EX Combustible Gas
In this situation, an appropriately configured multi-gas detector may be more suitable than a CO-only detector.
When Does G10S-CO Make Sense?
A dedicated G10S-CO may be considered when the customer's requirement specifically identifies carbon monoxide as the gas that needs to be measured.
Potential applications include:
CO investigation
Generator maintenance
Boiler inspection
Engine-related work
Factory maintenance
Mechanical rooms
Industrial troubleshooting
Specific CO exposure checks
The detector selection should always follow the actual hazard assessment and workplace safety requirements.
Single-Gas vs Multi-Gas Detector
The easiest way to understand the difference is:
Single-gas detector:
One detector is configured for one specific gas.
Multi-gas detector:
Several gas sensors are incorporated into one instrument so multiple hazards can be monitored.
If a technician only needs dedicated CO monitoring, a single-gas detector can be straightforward and practical.
If workers may encounter several gas hazards simultaneously, a multi-gas instrument may provide a more appropriate configuration.
G10S Gas Configurations Available
MTM Precision is developing the OTYWELL G10S series around several dedicated gas configurations:
G10S-CO Carbon Monoxide, 01000 ppm
G10S-HS Hydrogen Sulphide, 0100 ppm
G10S-O Oxygen, 030% VOL
G10S-NH Ammonia, 0100 ppm
G10S-SO Sulphur Dioxide, 020 ppm
This approach allows industrial users to select a detector according to the specific gas hazard they need to monitor.
What About 4-Gas and Multi-Gas Detection?
For customers whose application involves several gases, MTM Precision can also discuss multi-gas solutions.
A common configuration for certain industrial and confined-space applications may include gases such as:
EX / LEL + O + HS + CO
The exact configuration should be selected according to the identified hazards rather than assuming that every confined space has the same gas risks.
Diffusion vs Pump Sampling
Another question customers frequently ask is whether they need a diffusion detector or a pumped detector.
A diffusion detector measures gas when the surrounding atmosphere reaches the sensor.
A pumped detector actively draws a sample through tubing or a probe.
For applications requiring remote or pre-entry sampling, customers should specifically discuss the sampling method before purchasing.
Do not select a detector based only on the number of gases displayed on the screen.
Bump Test Before Use
A portable gas detector is a safety instrument.
Users should establish appropriate procedures for checking detector response before use according to the manufacturer's recommendations and their workplace requirements.
A bump test is used to confirm that the sensor and alarm system respond when exposed to suitable test gas.
This is different from calibration.
Calibration of Portable Gas Detectors
Calibration compares the detector response against a known reference gas concentration and allows adjustment where required.
OTYWELL advises that instruments are 100% calibrated before shipment, with calibration/test documentation provided for the instrument.
Users should subsequently follow the manufacturer's maintenance instructions and their organization's gas-detection programme.
How Long Does the G10S Sensor Last?
Typical sensor life for the G10S configurations being introduced by MTM Precision is approximately 23 years.
Actual sensor life can vary depending on:
Sensor type
Gas exposure
Concentration
Temperature and humidity
Storage conditions
Frequency of use
Maintenance
A detector should therefore not be treated as a permanent instrument that never requires checking or sensor replacement.
Choosing a Detector for Confined Space Work
Before asking, “Which gas detector should I buy?”, prepare these five pieces of information:
1. Which gases may be present?
2. Is oxygen deficiency a concern?
3. Is combustible gas monitoring required?
4. Is pre-entry remote sampling required?
5. What measuring ranges are required?
These answers make detector selection much easier.
Need Help Selecting Between G10S and a Multi-Gas Detector?
Send MTM Precision your application details.
For example:
Application: Tank inspection
Gas: CO + HS + O + LEL
Sampling: Pre-entry check required
Quantity: 5 units
Or:
Application: Generator maintenance
Gas: CO only
Range: Up to 1000 ppm
Quantity: 2 units
Our team can then identify whether a G10S single-gas detector or a multi-gas detector better matches the stated requirement.
Contact MTM Precision
MTM Precision Sdn. Bhd. (744811-A)
Telephone: +603-8080 7172
WhatsApp: +6016-660 7346
Email: mtmpre@yahoo.com / enquiry@mtmpre.com.my
Website: www.mtmpre.com.my
Showroom & Service Centre:
No. 29-1 & 29-2, Jalan Bandar 18,
Pusat Bandar Puchong,
47160 Puchong, Selangor, Malaysia.
MTM Precision supplies gas detection and industrial testing solutions to customers across Selangor, Kuala Lumpur, Johor, Penang, Melaka, Negeri Sembilan, Perak, Pahang, Kedah, Perlis, Terengganu, Sarawak and Sabah, Malaysia.
16 Sep 2026
