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 Hazardous Gas Detector with LED Display Board — O₃/H₂S/NH₃/CO Workplace Monitoring (Masan, Gyeongnam)

FIX800 Fixed Hazardous Gas Detector with LED Display Board — O₃/H₂S/NH₃/CO (Masan, Gyeongnam)

Hello from VPE Korea. This case covers the installation of a FIX800 fixed multi-gas detector and LED display board for hazardous gas monitoring in a work environment.

Background — Preventing Hazardous Gas Asphyxiation

Asphyxiation incidents caused by hazardous gases in workplace environments have been increasing over the past decade. Continuous monitoring of hazardous gases in work areas is essential for protecting workers before dangerous conditions develop.

Installation Specification

Detector: FIX800 multi-gas detector
Sensors: O₃ (ozone), H₂S (hydrogen sulfide), NH₃ (ammonia), CO (carbon monoxide)
Monitoring: 4-channel LED display board with beacon alarm

The system was installed to provide early detection of H₂S, O₃, and other hazardous gases that may be generated in this work environment.

Installation Process

Detector and display board mounting positions were confirmed with the facility manager before installation began. The display board is a weatherproof outdoor-rated model that operates without moisture ingress in all conditions.

Commissioning — Standard Gas Verification

Span gas testing is always performed after installation to verify sensor response and instrument accuracy.

Pump-Based Configuration — Active Gas Sampling at Source

A diaphragm pump actively draws sample gas from the generation point to the sensor for real-time monitoring.

The display board communicates with the FIX800 via RS-485 digital signal — providing stable, noise-free monitoring without signal hunting.

Frequently Asked Questions

Q1. Why were O₃, H₂S, NH₃, and CO selected for this application?

Work environments with ozone sterilization systems, water treatment processes, or odor control operations can generate all four of these gases simultaneously. Combining them in a single FIX800 unit provides comprehensive hazardous gas coverage with one installation point.

Q2. How does a display board with a beacon alarm differ from a standard board?

When gas concentrations exceed configured thresholds, the beacon triggers simultaneous audible and visual alarms. In large or noisy work areas, this ensures workers at a distance are immediately alerted — providing critical pre-evacuation warning time that a display-only board cannot guarantee.

Q3. What is the advantage of diaphragm pump-based sampling?

The pump actively draws gas from the generation point — the detector does not need to be positioned at the hazard source. This is particularly useful when the detection equipment must be installed away from the monitored area, or when sampling from inside specific pipes or enclosed spaces.

Q4. Why is RS-485 communication more stable than analog signals?

RS-485 uses differential signaling, which provides strong rejection of electromagnetic interference. Unlike 4–20 mA analog signals, digital RS-485 is immune to noise-induced drift and signal hunting — delivering accurate concentration values to the display board consistently, even in electrically noisy industrial environments.

Q5. What weatherproofing rating do outdoor display boards have?

Outdoor-rated display boards are typically certified to IP65 or higher — fully protected against dust ingress and water jets from any direction. This rating ensures reliable long-term operation in rain, spray, and washdown environments without risk of moisture damage.

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