OTYWELL G10S-O2 Oxygen Gas Detector for Confined Space Entry Malaysia
OTYWELL G10S-O2 Oxygen Gas Detector for Confined Space Entry Malaysia
The OTYWELL G10S-O2 Portable Oxygen Gas Detector is designed for dedicated oxygen monitoring in industrial and workplace safety applications.
For confined space work, oxygen concentration can be one of the important atmospheric parameters that needs to be checked before and during work.
The G10S-O2 provides a straightforward portable solution for users who specifically need to monitor O2 oxygen concentration.
OTYWELL G10S-O2 Measuring Range
Gas: O2 Oxygen
Measuring Range: 0-30% VOL
The G10S-O2 is a single gas detector.
It is specifically configured for oxygen monitoring and should not be assumed to detect other gases.
Why Monitor Oxygen in Confined Spaces?
Atmospheric conditions inside confined spaces may be different from normal surrounding air.
Potential locations include:
Storage tanks
Process vessels
Manholes
Pits
Underground chambers
Sewers
Wastewater tanks
Utility chambers
Industrial vessels
Factory maintenance areas
Depending on the process, oxygen concentration can change because of biological activity, oxidation, gas displacement, purging, combustion or poor ventilation.
An appropriate oxygen detector can therefore form part of a company's confined space safety procedure.
Is G10S-O2 Suitable for Confined Space Work?
The G10S-O2 can be considered when the requirement is specifically for portable oxygen monitoring.
However, customers should first determine which gases need to be monitored.
The G10S-O2 measures:
O2 only
It does not automatically measure:
H2S - Hydrogen Sulphide
CO - Carbon Monoxide
LEL - Combustible Gas
NH3 - Ammonia
SO2 - Sulphur Dioxide
If several atmospheric hazards must be monitored simultaneously, a suitable multi gas detector may be required.
G10S-O2 vs 4-in-1 Gas Detector
Customers often ask whether they should purchase a single gas detector or a 4-in-1 detector.
The answer depends on the application.
OTYWELL G10S-O2
Suitable for dedicated oxygen monitoring.
Gas: O2
Range: 0-30% VOL
4-in-1 Multi Gas Detector
A common configuration for certain industrial and confined space applications may include:
LEL + O2 + H2S + CO
This allows several atmospheric parameters to be monitored using one instrument.
The correct detector should be selected according to the actual hazards identified at the workplace.
G10S-O2 for Tank Entry
Tank inspection and maintenance are important applications for portable oxygen monitoring.
Potential work includes:
Storage tank inspection
Tank cleaning
Process vessel maintenance
Internal tank inspection
Shutdown maintenance
Industrial inspection
Tank repair work
Before personnel enter a tank, the responsible team should follow the company's established confined space and atmospheric testing procedures.
G10S-O2 for Vessel Inspection
Industrial process vessels can also require atmospheric monitoring during maintenance and shutdown activities.
A portable oxygen detector may be useful when O2 is one of the identified parameters that must be monitored.
If additional gas hazards are present, separate gas detectors or an appropriate multi gas detector may be required.
Personal Monitoring vs Pre-Entry Testing
These are two different applications.
Personal Monitoring
The worker carries the detector during the job.
The instrument monitors the atmosphere around the worker according to the detector's operating principle.
Pre-Entry Testing
The atmosphere is checked before personnel enter the confined space.
If the gas sample must be taken remotely through tubing, customers should consider whether a pumped gas detector is required.
This requirement should be confirmed before purchasing.
Diffusion Detector vs Pump Detector
A diffusion detector measures gas when the surrounding atmosphere reaches the sensor.
A pump detector actively draws the gas sample through suitable tubing or a probe.
For applications such as:
Tank pre-entry testing
Deep manhole testing
Remote vessel sampling
customers should tell MTM Precision how the sample needs to be collected.
This helps determine the appropriate detector type.
G10S-O2 vs G10S-H2S
The two models monitor different gases.
G10S-O2
Gas: Oxygen
Range: 0-30% VOL
G10S-H2S
Gas: Hydrogen Sulphide
Range: 0-100 ppm
An acceptable O2 reading does not prove that H2S is absent.
Similarly, an H2S detector does not tell the worker what the oxygen concentration is.
For applications where both parameters must be monitored, the customer should consider the complete gas detection requirement.
G10S-O2 vs G10S-CO
These are also different configurations.
G10S-O2
For oxygen monitoring.
G10S-CO
For carbon monoxide monitoring.
The G10S-CO configuration selected by MTM Precision has a range of:
CO: 0-1000 ppm
Customers should select the detector according to the target gas rather than choosing based only on instrument appearance.
Bump Test for Portable Gas Detectors
Portable gas detectors are safety instruments.
A bump test is used to check whether the detector and alarm system respond appropriately when exposed to the relevant test condition.
A bump test is different from calibration.
Users should follow the manufacturer's recommendations and their company's established safety procedures.
G10S-O2 Calibration
Calibration checks detector response against an appropriate known reference and allows adjustment where required.
OTYWELL advises that instruments are 100% calibrated before shipment and can be supplied with calibration or test documentation.
After the detector enters service, users should follow the manufacturer's maintenance and calibration recommendations.
Sensor Life
The sensor is a consumable component of a gas detector.
For the OTYWELL G10S configurations being introduced by MTM Precision, typical sensor life is approximately:
2-3 years
Actual sensor life depends on operating conditions, sensor type, environmental exposure, storage and maintenance.
Companies using gas detectors should therefore consider future sensor replacement when planning detector maintenance.
OTYWELL G10S Gas Detector Range
MTM Precision is introducing several G10S single gas configurations:
G10S-CO
Carbon Monoxide
Range: 0-1000 ppm
G10S-H2S
Hydrogen Sulphide
Range: 0-100 ppm
G10S-O2
Oxygen
Range: 0-30% VOL
G10S-NH3
Ammonia
Range: 0-100 ppm
G10S-SO2
Sulphur Dioxide
Range: 0-20 ppm
This allows customers to select a dedicated detector according to the gas they actually need to monitor.
How to Choose a Gas Detector for Confined Space Work
Before requesting a quotation, determine:
1. Which gases need to be monitored?
2. Is O2 monitoring required?
3. Are H2S, CO or combustible gases also potential hazards?
4. Is the detector for personal monitoring?
5. Is pre-entry testing required?
6. Is remote sampling required?
7. How many detectors are required?
Providing this information makes detector selection much easier.
Example: O2 Only
Application: Industrial vessel maintenance
Gas required: O2
Range: 0-30% VOL
Monitoring: Portable personal monitoring
The OTYWELL G10S-O2 can be considered where it meets the user's requirements.
Example: Multi Gas Requirement
Application: Confined space entry
Required parameters:
LEL + O2 + H2S + CO
A G10S-O2 alone would not cover all four parameters.
A suitable multi gas detector should be considered.
Request a Quotation
Customers can send MTM Precision:
Target Gas: O2 or multiple gases
Application: Tank, vessel, manhole, wastewater, factory or confined space
Required Range: If specified
Sampling Method: Diffusion or pump
Quantity: Number of units required
Calibration Requirement: If specified
You may also send us your tender specification, existing detector model or application details for comparison.
OTYWELL G10S-O2 Supplier Malaysia
MTM Precision supplies portable gas detection and industrial testing equipment for factory maintenance, confined space, wastewater, facility management, environmental and workplace safety applications in Malaysia.
Customers who are unsure whether they require a single gas O2 detector or a multi gas detector can send us the application before purchasing.
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 equipment throughout Selangor, Kuala Lumpur, Johor, Penang, Melaka, Negeri Sembilan, Perak, Pahang, Kedah, Perlis, Terengganu, Sarawak and Sabah, Malaysia.
17 Sep 2026
