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.

EDW500 LEL Flammable/Explosive Gas Sensor Installation and Quick Test — 가스측정기 전문 완디코리아 WANDI®

LEL (Lower Explosive Limit) refers to the lowest concentration of a flammable gas mixed with air at which an explosion can occur. The LEL standard for combustible gases provides a safety threshold for the safe use of flammable gases at specific industrial sites and environments.

Korea's Occupational Safety and Health Act recommends detecting five gases when carrying out work, and when performing work in a confined space, it is essential to confirm that the air quality meets the acceptable standard.

O₂ (Oxygen): 18% or higher, below 23.5%
CO (Carbon Monoxide): below 30 ppm
H₂S (Hydrogen Sulfide): below 10 ppm
CO₂ (Carbon Dioxide): below 1.5%
Flammable gas: below 10% LEL

Complying with the concentration standards above is essential to ensuring safety at the worksite.

POSCO wanted a product with IoT smart functionality rather than a conventional gas detector.

On site, they needed to be able to check gas concentrations in real time via smartphone or PC, and they also wanted data logging and storage.

This appears to reflect a move toward secondary and tertiary safety checks for workers.

EDW500 Configuration

EDW500 (LEL sensor equipped) main unit
Bracket (for connecting the manual pump)
USB cable
Power adapter
Factory test certificate
Storage case
EDW500 Bluetooth auto pump (optional)
IoT wireless module chip included (free)

The EDW500 is diffusion-type by default, but if you purchase the optional auto pump, it can also be used in pump-suction mode. Because it communicates via Bluetooth, the auto pump switches on automatically the moment the unit itself is powered on.

An IoT wireless module chip is also included as standard. There is no communication fee or additional cost.

Auto pump and EDW500

EDW500 with the auto pump attached

This photo shows a 5-gas EDW500 configuration (O₂, CO, H₂S, LEL, CO₂).

<When the unit is powered on, the measurement screen appears after a default 60-second ambient zero calibration>

WANDI — the best technology for safety

<Flammable gas alarm test with a lighter>

We tested how the unit detects and alarms when flammable gas is released from a lighter. Depending on the gas concentration, alarms occur up through the second stage (A1, A2), though the video clip only captured the A1 alarm.

The rear of the unit has an alligator clip, and its form factor is very compact.

<Wireless module installed>
Real-time monitoring / data storage / GPS communication

Through the standard-equipped IoT wireless module chip, real-time monitoring is possible via smartphone, tablet, or PC, and multiple units can be checked at the same time. When an alarm occurs, it can also be confirmed via pop-up alerts on smart devices or PCs. It can also track a worker's movement via GPS communication — this is the EDW500, a smart IoT gas detector.