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.

FIX800 Fixed H2S Gas Detector — Complete Guide for Sewage & Petrochemical Facilities

Hydrogen sulfide (H2S) is a highly toxic gas continuously generated in sewage treatment, petrochemical, and livestock facilities. The WANDI FIX800 fixed gas detector provides 24/7 continuous monitoring of H2S and up to 5 gases simultaneously to protect workers and facilities.

Why a Fixed H2S Detector Is Essential — The Importance of 24/7 Unmanned Monitoring

Hydrogen sulfide (H2S) occurs randomly and suddenly in sewage treatment plants, pump rooms, petrochemical processes, and livestock facilities. Gas can leak even at night or on holidays when no workers are present. In these environments, portable detectors alone have limits, and continuous monitoring with fixed gas detectors is essential. The WANDI FIX800 is a fixed-type industrial gas detector that simultaneously senses up to 5 gases including H2S.

💡 Fixed vs. Portable

Portable detectors protect individual workers, while fixed detectors provide facility-wide continuous monitoring. Operating both together is the safest response.

H2S Health Effects — Symptom Table by Concentration

Concentration (ppm)	Exposure Symptoms	Risk Level
0.5–1	Rotten-egg odor begins to be detectable	⬜ Safe
2–5	Headache and nausea with prolonged exposure	🟡 Caution
10	Eye, nose, and throat irritation, olfactory fatigue	🟠 Alert
50–100	Risk of conjunctivitis, pulmonary edema	🔴 Dangerous
150–200	Complete olfactory paralysis	🔴 Very Dangerous
300–500	Pulmonary edema, loss of consciousness	☠️ Life-threatening
700 or above	Respiratory paralysis and death within minutes	☠️ Immediately fatal

※ Korean Occupational Safety and Health Act H2S exposure limits: TWA 1 ppm / STEL 5 ppm (Korea MoEL Notice)

Real Incident Cases — H2S Accidents Caused by the Absence of Fixed Detectors

Case 1: Hydrogen Sulfide Leak in a Refinery Pump Room (2018, Ulsan)

At an oil refinery pump room in Ulsan, a worker was found collapsed during a night patrol. A post-incident investigation confirmed that H2S had leaked at a concentration exceeding 100 ppm, but no fixed H2S detector was installed in the area, so no automatic alarm was triggered. (Source: Korea Ministry of Employment and Labor, Serious Accident Investigation Report, 2018)

Case 2: Hydrogen Sulfide Accumulation in an Underground Sewage Pump Room (2022, Busan)

At an underground pump room of a sewage treatment facility in Busan, two workers lost consciousness due to gas accumulation. A fixed H2S detector was present at the facility, but the alarm setpoint had been set too high, delaying the effective alarm and worsening the outcome. (Source: KOSHA Accident Case Database, 2022)

H2S hazard zone warning sign — mandatory area for fixed gas detector installation — H2S hazard zone warning sign — installing fixed gas detectors on a permanent basis is key to preventing accidents (Source: Unsplash / Bernd Dittrich)

How WANDI FIX800 Prevents H2S Accidents

FIX800 — Fixed Industrial Gas Detector for Simultaneous Detection of Up to 5 Gases

The WANDI FIX800 is a fixed-type gas detector that simultaneously senses up to 5 gases including H2S, EX (combustible), CO, O2, and VOC. It provides 24-hour continuous monitoring, detecting hazards even when no workers are present, and can link alarm signals to a central control room or external systems.

5Gas

H2S·EX·CO·O2·VOC
Simultaneous Detection

24H

Uninterrupted
Continuous Monitoring

4–20mA

Analog Output
Control Room Integration

Prevention Scenario — If FIX800 Had Been in Use

1Continuous monitoring: FIX800 installed in the pump room and underground space measures H2S concentration in real time, 24 hours a day.
2Automatic alarm: Siren and warning light activate automatically when H2S reaches 10 ppm, prompting workers to evacuate before entry.
3Control room integration: 4–20mA analog output and relay signals connect to the central control room's DCS/SCADA, enabling remote monitoring.
4Automatic ventilation interlock: The alarm signal is linked to ventilation fans, triggering forced ventilation immediately as gas concentration rises.

Actual Installation Case — Fixed H2S Monitoring in a Power Plant Pump Room

WANDI fixed gas detector installed in a power plant pump room — simultaneous H2S, CO, O2 monitoring — Power plant pump room — WANDI fixed gas detector providing 24-hour continuous monitoring of CO, O2, and H2S

Confined Space Fixed H2S Detection Site (Pohang)

WANDI FIX800 fixed H2S gas detector installation site at a confined space in Pohang — Confined space site in Pohang — WANDI fixed gas detector installed for simultaneous H2S and methane detection

FIX800 Specifications (H2S Detection)

Item	Specification
Model	FIX800
Detection Type	Fixed installation
Detectable Gases	H2S, EX (combustible), CO, O2, VOC — up to 5 gases simultaneously
H2S Measurement Range	0–100 ppm
Output Signal	4–20mA analog / relay contact output
Alarm Setting	Independently configurable Stage 1 / Stage 2
Power Supply	DC 24V
Ingress Protection	IP65 or above

A Closer Look at the WANDI FIX800 Product and Installation

Below are real photos of the WANDI FIX800 fixed multi-gas detector.

WANDI FIX800 fixed multi-gas detector product — WANDI FIX800 with optional strobe light — instant alarm at hazardous concentrations

WANDI FIX800 installation site view — FIX800 installation site — building a 24-hour continuous monitoring system

FAQ

Hydrogen sulfide (H2S) occurs randomly and suddenly in sewage treatment plants, pump rooms, petrochemical processes, and livestock facilities. Gas can leak even at night or on holidays when no workers...