Eranntex MS104K-S1 O2 Oxygen Gas Detector Malaysia
Eranntex MS104K-S1 O2 Oxygen Gas Detector Malaysia
The Eranntex MS104K-S1 O鈧 Oxygen Gas Detector is a portable single-gas personal detector designed for continuous oxygen monitoring in industrial workplaces.
Oxygen monitoring is important because a hazardous atmosphere does not always involve a toxic gas.
In some environments, the danger is simply that there is not enough oxygen to support safe breathing.
The MS104K-S1 can be configured specifically for O鈧 monitoring, providing workers with continuous indication and alarm protection in areas where oxygen deficiency or oxygen enrichment may occur.
Why Monitor Oxygen?
Normal outdoor air contains approximately 20.9% oxygen by volume.
In industrial environments, oxygen concentration can change due to processes such as:
Nitrogen purging
Inert gas displacement
Oxidation
Combustion
Chemical reactions
Biological activity
Gas leakage
Poor ventilation
Work inside tanks or vessels
A workplace may therefore look completely normal while the atmosphere presents a serious oxygen hazard.
You cannot see or smell oxygen deficiency.
Electronic oxygen monitoring is therefore essential wherever oxygen displacement or depletion is reasonably possible.
Oxygen Deficiency 鈥 The Invisible Hazard
One particularly important industrial scenario is oxygen displacement.
Imagine a tank or enclosed room containing normal air.
If nitrogen or another inert gas enters the space, it can gradually displace the oxygen.
The worker may see:
No smoke
No obvious gas cloud
No unusual colour
and may not smell anything unusual.
Yet the atmosphere may no longer contain sufficient oxygen.
This is why oxygen measurement should be based on an appropriate gas detector鈥攏ot human senses.
MS104K-S1 鈥 Dedicated Personal O鈧 Detector
The Eranntex MS104K-S1 is a single-gas detector.
When configured for oxygen, it continuously monitors O鈧 concentration around the worker.
This can be useful when oxygen deficiency is an identified occupational risk and personnel require continuous personal monitoring during their work.
The instrument uses diffusion sampling, meaning the surrounding atmosphere reaches the sensor naturally without an internal sampling pump.
Key Features
Dedicated O鈧 Monitoring
Configured specifically for oxygen measurement.
This provides a straightforward display for workers who primarily need to monitor oxygen concentration.
Low & High Oxygen Alarms
Oxygen hazards can occur in two directions:
Oxygen Deficiency
O鈧 concentration falls below an established safe level.
Oxygen Enrichment
O鈧 concentration rises above normal levels, which can increase combustion and fire risks.
Appropriate alarm settings should therefore be selected according to the site's safety requirements.
Audible + Visual + Vibration Alarm
The MS104K-S1 provides multiple alarm indications:
Sound
Light
Vibration
Multiple warning methods are particularly valuable in noisy industrial workplaces.
Man-Down Alarm
A standard man-down alarm adds another layer of personal protection.
This is useful for personnel working in:
Plant rooms
Tanks
Industrial facilities
Utility areas
Maintenance environments
and other potentially hazardous locations.
IP68 Protection
The MS104K-S1 features an IP68 enclosure, making it suitable for demanding industrial environments where equipment may encounter dust, moisture and outdoor conditions.
Oxygen Detector for Confined Space Work
One of the strongest applications for an O鈧 detector is confined-space safety.
Potential confined spaces include:
Tanks
Vessels
Manholes
Pits
Silos
Sewers
Underground chambers
Process equipment
These environments can develop oxygen-deficient atmospheres for many different reasons.
However, there is a critical point:
An MS104K-S1 O鈧 detector measures oxygen only.
It does not automatically tell you whether other hazardous gases are present.
O鈧 Detector vs 4-Gas Detector for Confined Space
For confined-space work, atmospheric hazards may include:
O鈧 鈥 Oxygen deficiency/enrichment
LEL 鈥 Combustible gas
CO 鈥 Carbon monoxide
H鈧係 鈥 Hydrogen sulphide
Therefore, where multiple hazards are possible, a suitable multi-gas detector should be considered.
Dedicated O鈧 Detector
Best suited when oxygen concentration is the specific known monitoring requirement.
Multi-Gas Detector
Better suited when workers need simultaneous monitoring of several potential atmospheric hazards.
A normal O鈧 reading does not prove that the atmosphere is free from toxic or combustible gases.
Oxygen Detector for Nitrogen Purging
This is an especially important industrial application.
Nitrogen is commonly used for purposes such as:
Purging
Blanketing
Inerting
Process protection
Tank preparation
Pipeline work
Nitrogen itself may not provide the kind of sensory warning that workers associate with many chemical hazards.
The danger occurs when nitrogen displaces oxygen from the surrounding atmosphere.
Potential risk locations include:
Tank areas
Process rooms
Enclosed equipment
Pipeline areas
Vessels
Poorly ventilated spaces
Where nitrogen is used, oxygen monitoring can therefore become an important part of workplace safety.
O鈧 Detector for Tank & Vessel Work
Before working inside a tank or vessel, the atmosphere should never be assumed safe simply because the container is empty.
The previous process or contents may have altered the atmosphere.
Potential causes include:
Inert gas
Chemical reaction
Oxidation
Residual gases
Cleaning processes
Biological decomposition
Poor ventilation
An oxygen detector can help identify abnormal O鈧 concentration.
For formal confined-space entry, however, the complete atmospheric testing procedure should follow the organisation's applicable safety requirements.
Oxygen Monitoring in Factories
Factory maintenance personnel may encounter oxygen hazards in areas involving:
Industrial gases
Nitrogen
Storage tanks
Process vessels
Gas cylinders
Enclosed plant rooms
Chemical processes
Wastewater systems
A portable personal O鈧 detector can provide continuous monitoring while personnel perform their work.
Spot Test vs Continuous Personal Monitoring
These are not the same thing.
Spot Measurement
A gas detector is used to check an atmosphere at a specific time and location.
Continuous Personal Monitoring
The detector remains with the worker and continuously monitors the surrounding atmosphere during the work activity.
The MS104K-S1 is particularly useful as a personal monitor when oxygen is the known target hazard.
Atmospheric conditions can change after work begins, so an acceptable reading at the start does not necessarily guarantee that conditions will remain unchanged.
Typical MS104K-S1 Specifications
SpecificationMS104K-S1Detector TypePortable Single Gas DetectorTarget GasO鈧 鈥 OxygenSampling MethodDiffusionDisplay1.7-inch LCDTypical Accuracy卤3% F.S.AlarmAudible + Visual + VibrationMan-Down AlarmStandardProtection RatingIP68CommunicationInfraredStandard Storage100 Alarm RecordsOptional StorageUp to 100,000 RecordsPower SupplyDC 3.6V / 1600mAhDimensions87 脳 63 脳 32 mmWeightApprox. 200 g
Important: Exact oxygen measuring range, resolution, sensor specification, operating life and alarm configuration should be confirmed for the selected O鈧 version.
What Does 20.9% O鈧 Mean?
A typical normal-air reading is approximately:
20.9% Vol O鈧
The purpose of an oxygen detector is not simply to confirm that oxygen exists.
It is to identify when oxygen concentration moves away from normal atmospheric conditions and reaches a level requiring attention under the applicable workplace procedure.
For example:
Normal atmosphere 鈫 around 20.9% Vol
Falling O鈧 鈫 investigate potential oxygen displacement or depletion
Rising O鈧 鈫 investigate potential oxygen enrichment
The applicable alarm thresholds should follow the organisation's safety procedure and regulatory requirements.
Can an O鈧 Detector Detect Nitrogen?
No.
This is an important buying question.
An oxygen detector does not need to directly measure nitrogen to identify an oxygen-displacement hazard.
Instead, it measures the remaining oxygen concentration.
For example, if nitrogen enters an enclosed area and displaces normal air, the O鈧 detector identifies the resulting reduction in oxygen.
Therefore:
Nitrogen present 鈫 oxygen displaced 鈫 O鈧 concentration falls 鈫 oxygen detector alarms at its configured threshold.
This makes oxygen monitoring highly relevant to many nitrogen-purging applications.
Can MS104K-S1 Detect Other Gases?
Yes.
MS104K-S1 is a detector platform that can be configured for different single gases.
Other configurations can include:
CO 鈥 Carbon Monoxide
H鈧係 鈥 Hydrogen Sulphide
NH鈧 鈥 Ammonia
Cl鈧 鈥 Chlorine
SO鈧 鈥 Sulphur Dioxide
H鈧 鈥 Hydrogen
O鈧 鈥 Ozone
NO / NO鈧
CO鈧 鈥 Carbon Dioxide
CH鈧 鈥 Methane
Combustible Gas / Ex
and many other gas configurations depending on the required sensor and measuring range.
Which MS104K-S1 Version Should You Buy?
Before ordering, tell MTM Precision:
1. Target gas
O鈧 or another gas?
2. Application
Tank, vessel, nitrogen purging, factory, confined space or another environment?
3. Measuring requirement
Personal continuous monitoring or another measurement purpose?
4. Quantity
One instrument or multiple detectors for workers?
5. Other possible gas hazards
Could CO, H鈧係 or combustible gas also be present?
This last question is especially important.
If several hazards can occur simultaneously, we may recommend considering a multi-gas detector instead of a single O鈧 detector.
Eranntex MS104K-S1 Oxygen Detector Supplier Malaysia
For Malaysian factories and industrial users requiring dedicated oxygen monitoring, the Eranntex MS104K-S1 O鈧 provides a compact personal detection solution with:
鉁 Dedicated oxygen monitoring
鉁 Diffusion sampling
鉁 IP68 protection
鉁 Sound + light + vibration alarms
鉁 Man-down alarm
鉁 Compact personal design
It is particularly relevant for nitrogen purging, tank and vessel work, industrial gas environments, factory maintenance and selected confined-space applications.
Looking for an O鈧 Oxygen Detector in Malaysia?
MTM Precision can assist with selecting the appropriate gas detector according to your actual workplace hazard.
Tell us your gas + application + required range, and we can recommend the appropriate configuration.
Contact MTM Precision
MTM Precision Sdn Bhd
Website: www.mtmpre.com
Email: mtmpre@yahoo.com
WhatsApp: 016-660 7346
Showroom & Service Centre
No. 29-1 & 29-2, Jalan Bandar 18,
Pusat Bandar Puchong,
47160 Puchong, Selangor, Malaysia
Supporting industrial customers throughout Selangor, Kuala Lumpur, Johor, Penang, Melaka, Negeri Sembilan, Perak, Pahang, Kedah, Perlis, Terengganu, Sarawak and Sabah.
Eranntex MS104K-S1 O鈧 Oxygen Gas Detector Malaysia 鈥 Personal oxygen monitoring for industrial safety, nitrogen purging, tanks, vessels and hazardous working environments.
12 Sep 2026
