1. Product Overview
The Induskey SGA501 is an industrial-grade, fixed explosion-proof gas detector of the SGA-501/502/504/506 series — the latest generation of online gas detection products. The series can be freely configured with 1 to 6 gases in any combination, with no restriction on gas type, measuring range, or sampling method. Optional smart gas sensors plug in and are automatically recognized, enabling unlimited expansion to volatile organic compounds, PM2.5/PM10 dust, and temperature & humidity monitoring while reducing cost and simplifying after-sales service.
Depending on the target gas, the detector operates on electrochemical, infrared, catalytic combustion, PID (photoionization), semiconductor, optical waveguide, or MOS sensing principles, covering more than 1,000 combustible, toxic, and volatile gases as well as dust, noise, and ambient temperature/humidity. Measurement results are transmitted over wired interfaces (RS485, RS232, 4-20mA, 0-5V, Ethernet) or wireless links (WIFI, LoRa, ZigBee, NB-IoT, GPRS, Bluetooth) to gas alarm controllers, PLC, and DCS systems — solving continuous multi-hazard surveillance at fixed monitoring points without on-site personnel.
The detector is designed for fixed installation at the point closest to a potential leak source in hazardous industrial areas, with an Exd IIC T6 Gb flameproof enclosure (Certificate CE20.1135X) and IP67 ingress protection. One gas chamber supports diffusion, pipeline, and pump-suction sampling, and an integrated pump-suction version is available for confined or remote sampling.
2. System Architecture
The SGA501 operates as a fully integrated modular multi-gas detection platform with the following core components:
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Modular Smart Sensor Array: 1 to 6 gas sensors in any combination — electrochemical, infrared (NDIR), catalytic combustion, PID, semiconductor, optical waveguide, or MOS. Smart sensors are plug-and-play with automatic system recognition.
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2.4-inch HD Color LCD Display: High-definition color display with gas safety coefficient and color-coded visual pre-warning. Supports Simplified Chinese, Traditional Chinese, and English.
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Signal Processing & Output Unit: Wired RS485, RS232, 4-20mA, 0-5V, and Ethernet; wireless WIFI, LoRa, ZigBee, NB-IoT, GPRS, and Bluetooth.
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Optional Data Storage Module: 100,000+ records with optional Bluetooth printing.
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Optional Relay Output: 2 groups, 1A / 24VDC NO passive contacts (NC optional) for equipment interlock.
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Optional Sound-and-Light Alarm: Integrated alarm with visual color pre-warning.
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Optional IR Remote: Cover-free alarm-point editing, range adjustment, and gas calibration.
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Optional Temp/Humidity Sensor: Temperature -40 ~ +80°C; humidity 0-100%RH.
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Explosion-Proof Enclosure: Exd IIC T6 Gb with IP67; rugged cast-aluminum shield-shaped housing.
3. Key Features & Competitive Advantages
A. Flexible 1-6 Gas Configuration
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Single-gas up to six-gas combinations with unrestricted gas types, ranges, and sampling methods.
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Smart sensors are plug-and-play with automatic recognition.
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Expandable to VOCs, PM2.5/PM10, and temperature & humidity monitoring.
B. 2.4-inch HD Color LCD with Visual Pre-Warning
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High-definition color display combines the gas safety coefficient with a color-coded visual pre-warning method.
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Friendly HMI with free switching between Simplified Chinese, Traditional Chinese, and English.
C. Intelligent Lifecycle Management
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Automatic reminders for sensor fault, expiry, or damage, calibration due dates, and instrument end-of-life.
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Three-level two-stage alarming with one-key mute to avoid nuisance alarms.
D. Patented Algorithm & Smart Calibration
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Automatic zero calibration, automatic baseline correction, and multi-point target gas calibration.
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Full-range temperature & humidity compensation with data correction keeps measurement stable and accurate.
E. Wired & Wireless Connectivity
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Wired: RS485, RS232, 4-20mA, 0-5V, and Ethernet.
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Wireless: WIFI, LoRa, ZigBee, NB-IoT, GPRS, and Bluetooth.
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Optional storage of 100,000+ data records with Bluetooth printing.
F. One Chamber, Three Sampling Modes
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A single gas chamber supports natural diffusion (default), pipeline (M42×1.5), and flow-through sampling (6mm OD / 4mm ID tubing).
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Integrated pump-suction version optional for remote or confined-space sampling.
G. Certified Explosion-Proof, Cover-Free Operation
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Exd IIC T6 Gb flameproof rating (Certificate CE20.1135X) with IP67 protection.
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Rugged cast-aluminum shield-shaped housing.
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Optional infrared remote allows alarm-point editing, range adjustment, and calibration without opening the cover.
H. Wide Measuring Range & High Precision
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Measuring range: 0-1/2/5/10/50/100/500/1,000/5,000/10,000/50,000 (per sensor & principle).
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Resolution: 0.001/0.01/0.1/1/2/5 (per sensor & principle).
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Units: PPM, PPB, %LEL, %VOL, mg/m³, µg/m³, g/m³, g/L, mol/mol, µmol/mol.
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Accuracy: ≤±3% FS; repeatability: ≤±1% FS; linearity error: ≤±1% FS.
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Response time: ≤3-20 s (varies by gas).
4. Technical Specifications
| System Parameter |
Specification |
| General |
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| Product Type |
Industrial fixed explosion-proof single / multi-gas detector |
| Detected Gases |
1,000+ combustible, toxic and volatile gases; dust, noise, temperature & humidity |
| Detection Principle |
Electrochemical / Infrared / Catalytic combustion / PID / Semiconductor / Optical waveguide / MOS |
| Measuring Range |
0-1/2/5/10/50/100/500/1,000/5,000/10,000/50,000 (per sensor & principle) |
| Resolution |
0.001/0.01/0.1/1/2/5 (per sensor & principle) |
| Units |
PPM, PPB, %LEL, %VOL, mg/m³, µg/m³, g/m³, g/L, mol/mol, µmol/mol |
| Accuracy |
≤±3% FS (varies by gas) |
| Response Time |
≤3-20 s (varies by gas) |
| Repeatability |
≤±1% FS (varies by gas) |
| Linearity Error |
≤±1% FS (varies by gas) |
| System Configuration |
|
| Display |
2.4-inch color LCD |
| Output Signal |
Wired: RS485, RS232, 4-20mA, 0-5V, Ethernet; Wireless: WIFI, LoRa, ZigBee, NB-IoT, GPRS, Bluetooth |
| Operating Voltage |
DC 24V (12-30V) |
| Sampling Method |
Natural diffusion (default); pipeline (M42×1.5); flow-through (6mm OD / 4mm ID tubing) |
| Alarm Method |
Sound-and-light alarm + visual color pre-warning (optional) |
| Alarm Modes |
High, low, fault, calibration reminder, sensor replacement reminder, instrument life reminder |
| Relay (Optional) |
2 groups, 1A / 24VDC NO passive contacts (NC optional) |
| IR Remote (Optional) |
Supported — cover-free alarm-point edit, range adjustment, and gas calibration |
| Data Storage (Optional) |
100,000+ records; Bluetooth printing optional |
| OS Language |
Simplified Chinese / Traditional Chinese / English |
| Smart Functions |
Smart calibration, smart reminders, one-key mute, range modification, unit switching |
| Cable Entry |
M20×1.5 (G3/4 thread optional) |
| Environmental |
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| Operating Temperature |
-20°C ~ +50°C (high-temperature kit optional) |
| Operating Humidity |
10~95%RH (high-humidity kit optional) |
| Operating Pressure |
86~106kPa |
| Physical & Certification |
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| Explosion-Proof |
Exd IIC T6 Gb; Cert. No. CE20.1135X; IP67 |
| Housing Material |
Cast aluminum (shield-shaped enclosure) |
| Dimensions (SGA-501 with alarm) |
206×225×93 mm |
| Weight (SGA-501 with alarm) |
2.2 kg |
| Options |
Metering certificate (third-party, fee borne by customer) |
| Standard Accessories |
Packing box, user manual, certificate of conformity, delivery note |
5. Applications
The Induskey SGA501 is engineered for versatile deployment across hazardous industrial environments:
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Petroleum & Petrochemical: Refineries, natural gas facilities, oil pipelines, and storage terminals.
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Chemical Plants: Process areas, reactor zones, and chemical storage leak detection.
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Smelting & Steelworks: Furnace areas, gas handling, and coke oven monitoring.
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Coal & Thermal Power Plants: Boiler rooms, coal handling, and combustion gas monitoring.
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Waterworks & Sewage Treatment: Chlorine, hydrogen sulfide, and methane detection in confined spaces.
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Pharmaceutical Workshops: Solvent vapor and toxic gas monitoring in production areas.
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Boiler Rooms: Combustible gas and carbon monoxide surveillance.
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Industrial Process Control: Multi-gas monitoring in automated manufacturing.
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Fire Alarm Linkage: Combustible gas detection integrated with fire suppression systems.
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Food Processing & Cold Storage: Ammonia leak detection in refrigeration systems.
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Environmental Air Monitoring: Ambient toxic gas, VOC, dust, and noise surveillance.
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Research Institutes & Laboratories: Experimental gas handling and fume hood monitoring.
6. Optional Cloud Platform
To maximize operational oversight, the SGA501 seamlessly integrates with the optional Induskey industrial IoT Cloud Platform via wireless or Ethernet data uplink.
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Real-Time Remote Dashboard: Operators can wirelessly upload gas concentration data to directly read detection values for up to 6 gases simultaneously, monitor equipment operational status, and analyze leak trends remotely.
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Multi-Site Centralized Management: Enables GPS positioning of multiple multi-gas detectors across plant sites, tank farms, or pipeline networks, facilitating data-driven intelligent safety management.
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Alarm Notification: Supports programmable threshold alarms (high alarm, low alarm, STEL, TWA, calibration reminder, sensor replacement reminder, offline alerts) configured to automatically dispatch notifications to safety personnel and control rooms via SMS and email.
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Data Export & Reporting: Generates continuous historical concentration curves and operational logs for safety audit trails, regulatory compliance reporting, incident investigation, and maintenance planning.
