FIX800 Fixed Oxygen Detector — Laboratory Safety Installation for Nitrogen Gas Environment (Incheon)

FIX800 Fixed Oxygen Detector — Laboratory Installation for Nitrogen Gas Safety (Incheon)

This article introduces the FIX800 fixed oxygen detector installed in a research laboratory that uses nitrogen gas.

FIX800 — Fixed Gas Detector with Multiple Outputs and Alarm Functions

The FIX800 is a fixed toxic and hazardous gas detector with alarm output and monitoring capability for a wide range of environments. Supported outputs include 4–20 mA analog, RS-485 digital communication, and two relay outputs, enabling integration with virtually any site control or alarm infrastructure.

LED Display Board — Remote Monitoring at Entrance

Where gas monitoring is needed at an entrance or in an adjacent space, a display board can be installed and integrated with the FIX800 for real-time remote monitoring without entering the monitored area.

Sensor Section — Up to 4 Gas Sensors Simultaneously

The FIX800 accommodates up to 4 gas sensors simultaneously from a lineup of over 40 types — including VOC (PID), electrochemical, catalytic combustion, and infrared (NDIR) sensors. Measured values can be displayed in ppm, %vol, mg/m³, or mg/L as required.

Beacon Alarm and Remote Control Operation

When a measured gas concentration exceeds the configured threshold, the beacon triggers audible and visual alarms.

The included remote control allows alarm threshold adjustment, calibration, and output configuration without disassembling or physically touching the installed unit — a significant safety advantage for instruments installed in hazardous areas.

Frequently Asked Questions

Q1. Why is an oxygen detector needed in a laboratory that uses nitrogen gas?

Nitrogen is colorless and odorless — a leak cannot be detected without instrumentation. As nitrogen accumulates, it displaces oxygen. Below 18%, oxygen deficiency symptoms appear; below 6%, death can occur within minutes. An oxygen detector provides continuous monitoring and triggers an alarm before concentrations reach dangerous levels, giving workers time to evacuate safely.

Q2. What functions can be operated via the remote control?

The remote allows alarm threshold configuration, output signal mode selection, calibration execution, and data review — all from a safe distance. For instruments installed in hazardous zones, avoiding direct physical contact during these operations meaningfully improves safety.

Q3. When is the unit conversion function useful?

Different stakeholders and regulatory frameworks use different concentration units. Regulatory limits may be specified in ppm; industrial hygiene reports may require mg/m³; process engineers may prefer %vol. The FIX800's unit conversion allows values to be read directly in the required format without manual calculation — simplifying compliance reporting and limit comparison.

Q4. What is the difference between a catalytic combustion sensor and an infrared (NDIR) sensor?

Catalytic combustion sensors are cost-effective for flammable gas detection but can be poisoned by silicone, lead, and halogen compounds at high concentrations. NDIR sensors are suited to gases with infrared absorption characteristics — particularly CO₂ and CH₄ — and offer immunity to poisoning and longer service life. Sensor type should be selected based on the target gas and operating environment.

Q5. How often should calibration be performed?

Annual formal calibration is the standard recommendation. Before each use, verify that the O₂ reading in ambient air is approximately 20.9%. The FIX800's remote control includes a calibration shortcut that allows field calibration to be performed easily. For applications requiring an accredited calibration certificate, a certified calibration service should be arranged separately.

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