What does WANDI Korea do?

WANDI Korea is the official Korean distributor of WANDI environmental and gas measurement instruments, operated by RS Korea Co., Ltd. We provide sales, calibration, repair, installation, and technical support for portable and fixed multi-gas detectors and air quality monitoring systems, exporting to more than 20 countries with over 5,000 delivery records.

What products do you offer?

We supply portable multi-gas detectors (EDW100, EDW500, Gas Tiger series), fixed multi-gas detectors (FIX800, FIX900, FIX-AP), air quality monitoring systems (FIX5000), and gas leak detectors (GLD series) for industrial safety and environmental measurement.

Which gases can be measured?

Our instruments measure oxygen (O2), carbon monoxide (CO), hydrogen sulfide (H2S), combustible gases (EX), carbon dioxide (CO2), ammonia (NH3), and volatile organic compounds (VOC), among other hazardous and combustible gases found on industrial sites.

Do you provide calibration and repair services?

Yes. Beyond product sales, WANDI Korea provides in-house and national certified calibration, repair, installation, and ongoing technical support. Calibration and repair requests can be submitted through the quote/calibration/repair pages on our website.

How can I get a quote for a gas detector?

You can request a quote directly through the quote page on our website or through a nearby dealer. Let us know your application and target gases, and we will recommend a suitable model.

In which fields are the products used?

They are used across a wide range of industrial sites including laboratories, factories and plants, hospitals, military facilities, livestock and wastewater treatment, and construction sites for worker safety and environmental monitoring.

EDW100 Portable Gas Detector Complete Guide: Precision Single-Gas Measurement for Industrial Safety

💡 Summary

The WANDI EDW100 is a portable single-gas detector that precisely measures gases such as oxygen (O₂), carbon monoxide (CO), hydrogen sulfide (H₂S), and carbon dioxide (CO₂) using diffusion-type sensing. With its compact size, LED and audible alarms, and waterproof/dustproof design, it is optimized for OSH Act clean air standard compliance in confined space work, chemical plants, and sewer inspections. Available from KRW 207,900 (excl. VAT), selectable by gas type.

According to Korea Occupational Safety and Health Agency statistics, over the past 10 years, hydrogen sulfide poisoning accounted for 28.9% of confined space asphyxiation fatalities, oxygen deficiency for 22.9%, and carbon monoxide poisoning for 20.5%. Since gas incidents can result in multiple casualties at once, measuring gas concentrations before starting work is a mandatory procedure required by the OSH Act. The EDW100 is a precision measurement solution specialized for individual hazardous gases, designed so workers can carry it and detect hazards in real time.

What Is the EDW100 Portable Gas Detector?

The EDW100 is the entry-level model in WANDI Korea's portable single-gas detector lineup, designed for precise measurement of one target gas concentration. It uses diffusion-type sensing, detecting gas concentration by natural diffusion without a pump, while an optional suction pump can be added for pre-entry measurements at manholes, tanks, and similar enclosed spaces.

Gases the EDW100 Can Detect

Although a single-gas model, the EDW100 offers a wide range of sensor options, letting you choose the exact configuration for your site's specific hazard.

Target Gas	Primary Hazard Environment	Legal Standard
O₂ (Oxygen)	Confined spaces, tanks, underground work	18% or above, below 23.5%
CO (Carbon monoxide)	Boiler rooms, parking garages, combustion equipment	Below 30 ppm
H₂S (Hydrogen sulfide)	Sewers, sewage treatment plants, wastewater facilities	Below 10 ppm
CO₂ (Carbon dioxide)	Fermentation facilities, breweries, agricultural facilities	Below 1.5%
EX (Combustible gas)	Chemical plants, LNG/LPG facilities	10% LFL or below
NH₃, H₂, CH₂O, Cl₂, SO₂, NO, NO₂	Semiconductor, chemical, electroplating processes	Per chemical exposure limit

※ Clean air standards are as specified in Article 618 of the Rules on Safety and Health Standards in Industrial Settings.

Underground tunnel confined space work environment — Underground tunnels, manholes, and pits are high-risk environments where oxygen deficiency and toxic gas accumulation can occur simultaneously (Source: Unsplash / Miká Heming)

EDW100's 5 Key Features

1. Diffusion-Type Precision Sensing + Optional Pump

The standard diffusion-type sensing detects surrounding air naturally without any power-driven suction, resulting in low battery consumption and simple operation. For pre-entry inspections, a manual pump (+KRW 35,200) or automatic pump (+KRW 346,500) option can be added, allowing workers to measure internal air conditions through a hose from outside before entry.

2. Compact and Durable Portability

The small size can be clipped to safety helmets, work jacket pockets, or safety belts. Since it detects gases at a location close to the worker's breathing zone during movement, it provides the most accurate monitoring of actual exposure risk.

3. LED + Audible + Vibration Multi-Alarm

When 1st or 2nd alarm thresholds are exceeded, visual (LED flashing), auditory (buzzer), and tactile (vibration) alarms activate simultaneously. Designed so workers immediately recognize danger even in noisy industrial environments.

4. Waterproof and Dustproof Design

IP-rated waterproof and dustproof housing ensures reliable operation in rain, high humidity, and dusty environments. The rugged enclosure is designed to withstand impacts and drops for dependable performance in harsh industrial settings.

5. Intuitive LCD Display

An LCD displays real-time gas concentration, battery level, and alarm status at a glance. A self-test function automatically checks sensor, circuit, and alarm functionality when powered on.

EDW100 Step-by-Step Usage Guide

1Power on and self-test — Automatically verifies that sensor, battery, and alarms are functioning normally.
2Zero calibration — Automatic zero correction in fresh air to ensure measurement accuracy.
3Pre-entry measurement — With the pump option, insert the hose into the work space and check concentrations from outside.
4Clip on and wear — Clip to the breathing zone (around the chest of work jacket) and begin work.
5Evacuate immediately when alarm sounds — When LED, buzzer, and vibration alarms activate, stop work immediately and move to a safe area.

Industrial Sites Where the EDW100 Makes a Difference

Confined Space Work: Mandatory Measurement Under OSH Act

Under Article 619 of the Rules on Safety and Health Standards, employers must measure oxygen and hazardous gas concentrations before confined space work begins. In manholes, septic tanks, storage tanks, and underground pits, the EDW100 serves as a personal portable secondary detector or primary pre-entry measurement device.

Chemical and Semiconductor Plants

With special gas sensor options for NH₃, H₂, Cl₂, SO₂, etc., the EDW100 can be used for monitoring specific chemical leaks in semiconductor, chemical, and electroplating processes. Running purpose-specific single-gas models is more cost-efficient than multi-gas detectors in single-hazard environments.

Sewers and Environmental Facilities

Sewers, septic tanks, pump stations, and wastewater treatment plants are high-risk environments for hydrogen sulfide (H₂S) generation. When agitating or mixing fecal matter, wastewater, or pulp liquids, H₂S can suddenly spike to high concentrations, making a dedicated H₂S EDW100 highly recommended.

Construction and Civil Engineering Sites

Carbon monoxide (CO) and oxygen deficiency risks arise at underground concrete curing sites, temporary quarters using lignite/coal briquettes, and tunnel excavation sites. Portable EDW100 units deployed per work team reinforce individual safety.

In the Era of Serious Accident Punishment Act, Gas Monitoring Equipment Is No Longer Optional

⚠️ Employer Obligations

Since the enforcement of the Serious Accident Punishment Act, owning measurement equipment for preventing gas poisoning and asphyxiation in the workplace has become a de facto obligation. The OSH Act requires that measurement be performed by persons with knowledge and practical experience in measuring and evaluating oxygen and hazardous gas concentrations, making portable gas detectors a core tool in this measurement and evaluation process.

As an affordable entry-level single-gas model, the EDW100 can be deployed one per work team to build a company-wide safety system. For sites requiring multi-gas detection, combining with the EDW500 (IoT wireless 5-gas) or GasTiger series (special/multi-gas) delivers both cost efficiency and comprehensive safety coverage.

EDW100 Pricing and Purchase Guide

Type	Specification	Price (excl. VAT)
Standard	1 of: EX, CO, O₂, H₂S	KRW 207,900
CO₂ model	CO₂ (carbon dioxide) only	+KRW 542,850
Special gas model	NH₃, H₂, CH₂O, Cl₂, SO₂, NO, NO₂	+KRW 369,600
Manual pump option	For pre-entry measurement	+KRW 35,200
Automatic pump option	Continuous suction-type measurement	+KRW 346,500

For bulk orders, calibration/repair services, and A/S, please contact WANDI Korea's official channels. Detailed product specifications and manuals are available on the WANDI Korea EDW100 product page, and quotes can be requested quickly through the quote request page.