Oxygen O2 Gas Detector Malaysia Fosensor FS11301 4-in-1 Gas Detector
Oxygen O2 Gas Detector Malaysia Fosensor FS11301 4-in-1 Gas Detector Oxygen concentration is an important atmospheric parameter in many industrial gas-monitoring applications. However, some workplaces need to monitor more than oxygen alone. When the identified hazards also include combustible gas, hydrogen sulphide and carbon monoxide, the Fosensor FS11301 Portable 4-in-1 Gas Detector provides simultaneous monitoring of: O2 + EX/LEL + H2S + CO in one portable instrument. The Fosensor FS11301 is available in both Natural Diffusion and Pump Suction configurations for different gas-sampling requirements. What Is the O2 Measuring Range of the Fosensor FS11301? The FS11301 oxygen channel provides: Measuring Range: 030% VOL Resolution: 0.1% VOL According to the manufacturer's specification, the listed O2 alarm points are: Low Alarm: 19.5% VOL High Alarm: 23.5% VOL The oxygen reading is displayed together with the detector's other gas channels. What Other Gases Does FS11301 Measure? The standard four-gas configuration covered by the FS11301 documentation is: GasMeasuring RangeResolutionO2030% VOL0.1% VOLEX0100% LEL1% LELH2S0100 ppm1 ppmCO01000 ppm1 ppm This means the FS11301 is not simply an oxygen meter. It is a professional portable 4-in-1 gas detector. Oxygen Detector or 4-in-1 Gas Detector? The right choice depends on the monitoring requirement. Choose an O2-Only Detector When: The requirement is specifically oxygen concentration and the additional gas channels are unnecessary. Consider Fosensor FS11301 When: The required monitoring includes: O2 + LEL + H2S + CO A multi-gas detector allows all four parameters to be monitored using one portable instrument. Why Isn't Oxygen Monitoring Alone Always Enough? An O2 reading only provides oxygen concentration. It does not tell the user: H2S concentration CO concentration Combustible gas / LEL concentration Where these hazards have also been identified, monitoring oxygen alone does not provide the other three FS11301 measurements. This is why a four-gas detector can be useful in professional industrial applications. What Does 19.5% O2 Mean on the FS11301? The FS11301 manufacturer's parameter table lists: O2 Low Alarm: 19.5% VOL The same table lists: O2 High Alarm: 23.5% VOL These are manufacturer-listed alarm points for the detector. Users should follow their applicable workplace requirements when configuring and interpreting oxygen alarm settings. Natural Diffusion Oxygen Monitoring The FS11301 Natural Diffusion version allows surrounding gas to reach the detector sensors naturally. Its specified dimensions are: 135 × 68 × 43 mm This configuration is suitable when professional four-gas monitoring is required and the testing procedure does not require active sampling. Pump Suction Oxygen Monitoring The FS11301 Pump Suction version actively draws a gas sample toward the detector. Its specified dimensions are: 150 × 68 × 60 mm This version should be considered when the work procedure requires active gas sampling. The pump is therefore a sampling feature, rather than simply a reason to choose the more expensive detector. Do I Need Pump Suction to Measure O2? Not necessarily. The correct sampling method depends on the application. If the detector is intended to monitor the atmosphere immediately surrounding the instrument and active sampling is not required: Natural Diffusion may be sufficient. If the required procedure involves actively drawing a gas sample toward the detector: Pump Suction should be considered. Can the Pump Version Be Changed to Natural Diffusion? Yes. According to the FS11301 operating manual, the pump suction module can be removed. The procedure involves: Removing the four screws at the rear. Removing the pump suction module. Installing the Natural Diffusion front cover. Re-tightening the four screws. After conversion, the detector operates in Natural Diffusion mode. This provides additional flexibility for users who require different sampling configurations. Multiple Alarm Methods The FS11301 provides several warning methods: LCD indication LED warning Audible alarm Vibration Backlight When the measured gas reaches an alarm condition, the detector can activate its buzzer, flashing red indicator, backlight and vibrator. This helps make abnormal readings noticeable to the operator. Does the FS11301 Have STEL and TWA? The FS11301 alarm menu includes: Low Alarm High Alarm STEL TWA MAX The supplied documentation presents these as alarm-setting options. Users should follow the applicable workplace requirements when configuring and interpreting these parameters. Does the FS11301 Store Gas Alarm Records? Yes. The detector provides a gas alarm record function. Users can select a gas type through the instrument interface and display the corresponding gas record. This provides additional information beyond the current real-time reading. Does FS11301 Show Gas Trends? The detector also provides a Curve Graph function. Users can browse changes in measured parameters through the instrument interface. This is another feature that helps distinguish the FS11301 from very basic gas detectors. What Is the FS11301 Response Time? The manufacturer's general performance specification states: Response Time: T < 15 seconds The specified display error is: ≤ ±2% FS The manufacturer's documentation does not provide a separate response-time specification specifically for the O2 channel. Therefore, the general instrument specification should not be represented as an independently specified O2-only response time. Battery Capacity The FS11301 uses a: 3000mAh lithium battery The manufacturer's specifications state: Standby Time: >8 hours Charging Time: approximately 4 hours Working Voltage: DC 5V Charging is provided through a Type-C connection. Operating Environment The manufacturer's specified operating conditions are: Working Temperature: -20°C to 50°C Working Humidity: 095% RH, non-condensing The product introduction describes the housing as high-strength engineering plastic with composite anti-slip rubber. Important Charging Warning The FS11301 manual specifically warns users not to charge the detector at the testing site where sparks from plugging or unplugging the charger could create a fire or explosion hazard. The battery pack must also not be charged in an explosive gas atmosphere. Users should follow the manufacturer's operating instructions. Where Can the Fosensor FS11301 Be Used? The manufacturer lists main applications including: Petroleum Chemical Industry Environmental Protection Metallurgy Refining Gas Transmission and Distribution Biochemical Pharmaceuticals Agriculture The suitability of the standard four-gas configuration depends on whether its installed gas channels match the hazards that need to be monitored. Is the FS11301 an Oxygen Deficiency Detector? The FS11301 includes an oxygen channel with a specified measuring range of: 030% VOL and a manufacturer-listed low alarm point of: 19.5% VOL Therefore, it provides oxygen concentration monitoring as part of its four-gas configuration. However, users should follow their applicable workplace requirements when determining how oxygen readings and alarms are used in a safety procedure. Can FS11301 Detect Oxygen Enrichment? The manufacturer's specification lists the O2 measuring range as: 030% VOL and the listed high alarm point as: 23.5% VOL The detector therefore provides oxygen measurement above normal atmospheric concentration within its specified range. The appropriate interpretation and response should follow the user's applicable workplace procedures. Is FS11301 Suitable for Confined Space Oxygen Testing? The FS11301 provides O2, LEL, H2S and CO monitoring and is available with a Pump Suction configuration. These features can make it relevant when evaluating equipment for atmospheric testing procedures where these four parameters and the selected sampling method are applicable. However, a gas detector alone does not determine whether a confined space is safe for entry. Users must follow the applicable risk assessment, sampling procedure, gas-testing requirements and entry procedures. Can FS11301 Detect Every Gas? No. The standard configuration discussed here measures: O2 + EX/LEL + H2S + CO If the application requires another gas such as a different toxic gas, the appropriate sensor or detector must be selected. Tell MTM Precision the gas you need to monitor before purchasing if you are unsure. Fosensor FS11301 vs Wintact WT8812 MTM Precision offers different levels of four-gas detection equipment. Wintact WT8812 Economical Suitable for customers looking for a value-for-money 4-in-1 gas detector. Fosensor FS11301 Natural Diffusion Professional Suitable for customers who want additional monitoring and alarm functions without active sampling. Fosensor FS11301 Pump Suction Professional + Active Sampling Suitable when the required testing procedure also calls for pump suction. The product progression is: WT8812 → FS11301 Natural Diffusion → FS11301 Pump Suction Does an Oxygen Gas Detector Need Calibration? For the FS11301 specifically, the manufacturer states that the detector should be calibrated periodically. The manual specifies: The calibration cycle should not exceed one year. The calibration menu includes zero-point calibration, zero-point shift, concentration calibration, one-click zeroing and factory reset. The manufacturer warns that calibration operations are intended for professionals because incorrect calibration can affect test results. Which Oxygen Detector Should I Buy? Before selecting a detector, ask: Do I need O2 only? Do I also need combustible-gas monitoring? Do I need H2S? Do I need CO? Is Natural Diffusion sufficient? Do I require Pump Suction? What measuring range is required? What certification documentation does the site require? How will calibration be managed? If the requirement includes all four standard FS11301 parameters, a four-gas detector can provide a more complete solution than an O2-only instrument. Buy O2 & 4-in-1 Gas Detector in Malaysia For industrial users requiring simultaneous monitoring of: O2 + LEL + H2S + CO consider the Fosensor FS11301 Portable 4-in-1 Gas Detector. Choose: FS11301 Natural Diffusion for professional monitoring without active sampling. FS11301 Pump Suction when active gas sampling is required. For customers primarily seeking an economical four-gas detector, MTM Precision also supplies the Wintact WT8812. Contact MTM Precision with your application, required gases and sampling method for model selection and quotation. Contact MTM Precision MTM Precision Sdn Bhd 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
25 Aug 2026
