Fixed Conventional Gas Detector
... with wide range of SMART plugged-in sensors
Model GAScan G1 series
GAScan G1 series is one of GDS latest inclusion in our product range, providing a complementary solution to our customers, with a wide range of fixed conventional gas detectors, with our unique SMART plug-in design type of gas sensors, for detection of many gases; including combustible gases C1 - C10, oxygen, and many toxic gases. For a full range of toxic gases, please contact us.
GAScan G1 series comprises:
- Model G1
- Model G1Max
- Model GTYQ-G1
- Model GTYQ-G1Max
plug-in SMART feature
to ensure reliable, and ease of installation, testing and commissioning of detector at site
Wide selection of gas sensors
for user selection and choices, to meet various demands and
applications in many market sectors.
All-weather venturi-type gas inlet
has proven to yield effective sensor response and long-sensor life beyond expectations
Built-in Temp / Humidity sensors
to ensure accurate and real-time compensation in measurements under all weather conditions
4 - 20 mA analog and MODBUS RS485 output; HART as optional.
stable and accurate measurements highly resistance to humidity interference.
Explosion proof EEx d IIC T6 for hazardous application.
With unique venturi-designed all-weathered gas inlet for improved and effective draw in sample gas.
Contactless Infra-red interface for non-intrusive access to menu.
Large LED display
Sensor type Catalytic combustion CC type
Electro-chemical EC type
Sensor gas-type Flammable: C1 Methane (Standard) , C2, C3, C4, C5
Common: Oxygen, CO, H2S, NH3, Cl2, CO2
Exotic: ETO, CH3-OH, VCM, O3, H2, HCl, HCN, HF, ClO2, Phosgene
SO, NO, NO2
NOTE: for other toxic gases not listed, please consult manufacturer
Range / (Optional Ranges) Flammable: 0 - 100% LEL (standard) / (0 - 100 %VOL)
Oxygen: 0 - 30% VOL / (25% VOL)
Common Toxic gases:
CO: 0 - 1,000 ppm / (2,000 , 3,000, 5,000 ppm)
H2S: 0 - 100 ppm / (200, 500, 1,000 ppm)
NH3: 0 - 100 ppm (200, 300, 500, 1,000 ppm)
Cl2: 0 - 20 ppm / (50, 100 pm)
NOTE: for other range not listed, please consult manufacturer
Self-test Built-in self-testing
Relay contacts SPST dry contact for Relay (connected with audible/visual alarms or drive
LEDs Alarm Built-in alarm LEDs; Yellow and Red
Response Time See user manual for T90 response time for specific sensor.
EX Approval ATEX II 2G Ex d IICT6Gb
IP Rating IP66
Power 16～30V DC.
Cable 3 or 4 active wires screened between detector and centralized unit. 3×1.5mm2
for 4-20mA signal OR 4*1.5mm2 for RS485 signal, external diameter ≥ 10mm
Output 4 - 20 mA , HART (option)
Modbus RS 485
SPST relay contact (connected with audible/visual alarms or drive exhaust device).
Sampling method Diffusion type; gas inlet with unique venturi-type design
Display Large LED
User interface Non-intrusive using Infra-red interface to access menu.
Operating Cond. Temperature:－20℃~+60℃ Humidity: < 90%(without condensation)
Physical Data Weight: 1200g.
Dimension: L 114 x D 125 x H 166 (mm)
Head Office (Singapore)
GDS INSTRUMENTS PTE LTD
33 Ubi Avenue 3, Unit 05-28,
Vertex Building Tower B
Tel: +(65) 6509 4758 (Hunting)
Fax: +(65) 6509 4227
Service and Support
Terms and Conditions
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