RS485 Combustible Gas Detector 4-20mA with Real Time Concentration / Temp Readout
Gas Detector Real-Time Concentration & Temp Readout RS485 4-20mA
Industrial Ex Gas Detector with Multi-Function: IP66, Sound-Light Alarm, Real-Time Concentration & Temp Readout | Dual Output Options
1.Product Overview
The GTYQ-JSY-201/A industrial-grade point gas detector is an explosion-proof device integrating real-time concentration display, audible/visual alarms, and ambient temperature monitoring.
Operating on natural diffusion principle with catalytic combustion sensing technology, it delivers superior sensitivity and measurement consistency. The industrial-grade segment LCD simultaneously displays gas concentration and ambient temperature. Upon reaching preset thresholds, the unit triggers strobe/horn alarms and can activate ventilation systems. Featuring 4-20mA output for direct DCS integration or RS485 connectivity with our M201 control panel for centralized monitoring. The PowerBus 2-wire option simplifies installation. Built with embedded microcontroller architecture for reliable operation with intuitive functionality.
2.Product Features
(1) Advanced false-alarm filtering algorithm
(2) 360° LED status ring
(3) Hot-swappable sensor modules
(4) EMI/RFI shielding
(5) Multi-interface options: RS485 (4-wire), PowerBus (2-wire), 4-20mA
(6) Certified industrial housing (IP66)
(7) Explosion-proof & corrosion-resistant construction
(8) Complies with GB15322.1-2019, GB/T 3836.1-2021, GB/T 3836.2-2021
3. Application
(1) Flammable gas/vapor risk areas.
(2) Alcohol storage & fuel depots
(3) LPG/CNG stations & refineries
(4) Chemical plants & power stations
(5) Gas distribution facilities
(6) Semiconductor cleanrooms
(7) Pharma production
4.Main Technical Data
| Operating voltage | DC 24V |
| Operating current | ≤50mA / DC 24V |
| Alarm current | ≤65mA / DC 24V |
| Detection principle | Catalytic Combustion Type |
| Detection range | 3~100%LEL |
| Resolution | 0.1%LEL |
| Measurement error | Range indication deviation: ±5%LEL |
| Sampling method | Natural diffusion |
| Ambient temperature | -40℃~+70℃ |
| Ambient humidity | ≤95% RH without condensation |
| Response time | ≤20s |
| Protection level | IP66 |
| Output mode | RS485 bus, POWERBUS bus, Relay passive contacts (or 4 - 20mA) |
| Relay contact capacity | 0.5A/AC 125V 1A/DC 24V |
| Material | Cast aluminum (stainless steel optional) |
| Implementation standard | GB15322.1-2019 |
| Dimensions |
L:201mm × W:162mm × H:50mm (L:7.91in×W:6.38in×H:1.97in) |
| Weight | 1.2kg(2.645lbs) |
| Color | Metallic silver |
| Cable outlet thread | Standard: 2 pieces of G3/4 |
| Explosion-proof mark | Ex db ⅡC T6 Gb/ Ex tb ⅢC T80℃ Db |
| Sensor service life | 2 years |
| Alarm set value | Low limit: 25%LEL, High limit: 50%LEL |
5.Indicator Lights
| Status | Indicator light |
| Operation Indicator Light (Green) | Flashes at 0.5S intervals |
| Alarm Confirmation Indicator Light (Red) | Flashes for 0.5S when low-limit alarm is triggered, and stays on when high-limit alarm is triggered. |
| Fault Indicator Light (Blue) | Stays on |
6.Complete Product Set
| Name | Quantities | Unit of measure |
| GTYQ-JSY-201 Point-type combustible gas detectors for industrial and commercial applications |
1 | piece |
| Instruction Manual | 1 | portion |
| Explosion-proof Certificate | 1 | portion |
| Connecting bolt M6x30 | 2 | piece |
| Mounting Bracket | 1 | piece |
| Remote control | 1 | unit/batch |
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