💡 Key Summary
WANDI EDW100 is a portable single-gas detector that precisely measures O2, CO, H2S, CO2 and other target gases via diffusion-type sensing. With its compact form factor, multi-mode LED/audible alarms and IP-rated waterproof/dustproof enclosure, it is optimized for confined space work, chemical plants, and sewer inspections in compliance with Korean OSH Act air-quality standards. Pricing starts at KRW 207,900 with sensor options selectable per application.
According to Korea's industrial safety statistics, hydrogen sulfide poisoning accounted for 28.9% of confined-space asphyxiation fatalities over the past decade, simple oxygen deficiency 22.9%, and carbon monoxide poisoning 20.5%. Because gas accidents frequently cause multiple casualties at once, pre-entry gas concentration measurement is a mandatory procedure under the Korean Occupational Safety and Health Act. The EDW100 is a precision measurement solution specialized for these single-gas hazards, designed to be carried by individual workers for real-time risk detection.
What Is the EDW100 Portable Gas Detector?
The EDW100 is the entry-level model in WANDI's portable single-gas detector lineup, designed to precisely measure the concentration of one target gas. It uses a diffusion-type sensing method, requiring no pump to detect ambient gas concentrations naturally. An optional sampling pump can be added for pre-entry inspection of manholes, tanks, and other enclosed spaces.
Gases the EDW100 Can Measure
Although it is a single-gas model, the EDW100 supports a wide range of sensor options so users can match the detector to specific workplace hazards.
| Target Gas | Typical Hazard Environment | Korean Legal Limit |
|---|---|---|
| O2 (Oxygen) | Confined spaces, tanks, underground | 18% to 23.5% |
| CO (Carbon Monoxide) | Boiler rooms, parking garages, combustion | Below 30 ppm |
| H2S (Hydrogen Sulfide) | Sewers, sludge tanks, wastewater | Below 10 ppm |
| CO2 (Carbon Dioxide) | Fermentation, breweries, agriculture | Below 1.5% |
| EX (Combustible Gas) | Chemical plants, LNG/LPG facilities | Below 10% LFL |
| NH3, H2, CH2O, CL2, SO2, NO, NO2 | Semiconductor, chemical, plating | Per substance OEL |
※ Air-quality limits referenced from Article 618 of the Korean OSH Standards Rules.
5 Core Features of the EDW100
1. Diffusion Sensing with Optional Sampling Pump
The standard diffusion-type method detects ambient gas without external power, providing low battery consumption and simple operation. For pre-entry inspections, a manual pump (+KRW 35,200) or automatic pump (+KRW 346,500) can be added so workers can sample air remotely via a hose before entering enclosed spaces.
2. Compact, Rugged Portability
The compact body clips to hard hats, work uniform pockets, and safety harnesses. Because it travels with the worker near the breathing zone, the EDW100 most accurately reflects real exposure risk.
3. Multi-Mode LED + Audible + Vibration Alarms
When concentrations exceed Low/High alarm thresholds, the unit triggers visual (flashing LED), audible (buzzer), and tactile (vibration) alarms simultaneously. This ensures workers recognize hazards immediately, even in noisy industrial environments.
4. Waterproof and Dustproof Construction
IP-rated waterproof and dustproof housing ensures stable operation in rain, humidity, and dusty environments. The rugged enclosure is designed to withstand impacts and drops in harsh industrial conditions.
5. Intuitive LCD Display
An easy-to-read LCD shows real-time gas concentration, battery status, and alarm state at a glance. A self-test routine on power-up automatically verifies sensor, circuit, and alarm functionality.
EDW100 Step-by-Step Operation Guide
- 1Power ON & Self-Test — The unit automatically verifies sensor, battery, and alarm functions.
- 2Zero Calibration — Auto-zero in fresh air to ensure measurement accuracy.
- 3Pre-Entry Sampling — With pump option, insert hose into the work space to check concentration from outside.
- 4Wear and Begin Work — Clip the unit to the chest area within the breathing zone.
- 5Evacuate Immediately on Alarm — Stop work and move to a safe area when LED/buzzer/vibration alarms activate.
Industrial Applications of the EDW100
Confined Space Work: OSH Act Mandatory Measurement
Under Article 619 of the Korean OSH Standards Rules, employers must measure oxygen and toxic gas concentrations before confined space work begins. In manholes, septic tanks, storage tanks, and underground pits, the EDW100 serves as either a worker's personal monitor or a first-line pre-entry tester.
Chemical & Semiconductor Plants
Specialty sensor options for NH3, H2, CL2, SO2, etc. enable monitoring of specific chemical leaks in semiconductor, chemical, and plating processes. Single-hazard models are more cost-efficient than multi-gas units when only one target hazard is present.
Sewer & Environmental Facilities
Sewers, septic systems, pump stations, and wastewater plants are high-risk environments for hydrogen sulfide (H2S). H2S can release in sudden high concentrations when sludge or sewage is agitated, making the EDW100 H2S model essential for these workers.
Construction & Civil Engineering
Underground concrete curing sites, temporary lodgings using charcoal/briquette heating, and tunnel excavation sites all carry CO and oxygen-deficiency risks. Deploying EDW100 units per work crew strengthens individual safety.
In the Era of the Serious Accidents Punishment Act, Gas Detection Is No Longer Optional
⚠️ Employer Obligations
Since the enactment of Korea's Serious Accidents Punishment Act, possessing gas detection equipment to prevent workplace gas poisoning and asphyxiation accidents has become a de facto requirement. The OSH Act mandates that measurement and evaluation be performed by personnel with relevant knowledge and field experience, and portable gas detectors are central to this process.
The EDW100's accessible price point as a single-gas model allows organizations to deploy one unit per work crew, building company-wide safety coverage. For sites requiring multi-gas monitoring, combining EDW100s with the EDW500 (IoT 5-gas wireless) and GasTiger series (specialty/composite gas) achieves both cost efficiency and comprehensive safety.
EDW100 Pricing & Purchase Information
| Configuration | Specification | Price (excl. VAT) |
|---|---|---|
| Standard | EX, CO, O2, or H2S (one) | KRW 207,900 |
| CO2 Model | CO2 single gas | +KRW 542,850 |
| Specialty Gas | NH3, H2, CH2O, CL2, SO2, NO, NO2 | +KRW 369,600 |
| Manual Pump Option | Pre-entry sampling | +KRW 35,200 |
| Auto Pump Option | Continuous pumped sampling | +KRW 346,500 |
For bulk purchases, calibration/repair services, or after-sales support, please contact WANDI Korea through official channels. Detailed product specifications and manuals are available on the EDW100 product page, and quotes can be requested quickly via the quotation request page.
📞 EDW100 Consultation
WANDI Korea is a specialized gas detection company offering fast delivery, domestic A/S, and 1-on-1 customized consulting.
View installation references on the case studies page.