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RS485 MODBUS 4 H2S Gas Monitor Fixed H2S Gas Detector IECEX ATEX

Basic Information
Place of Origin: China
Brand Name: YuanTe
Certification: SIL CE ATEX IECEX ISO9001-2015
Model Number: YT-98H
Minimum Order Quantity: 1
Price: Negotiable
Packaging Details: Carton Box
Delivery Time: 2-3 days
Payment Terms: T/T, Western Union, Credit Card
Supply Ability: 500PCS/DAY
Detail Information
Detected Gas: H2S Hydrogen Sulfide Measure Range: 0-10ppm, 0-50ppm, 0-100ppm, 0-200ppm
Sampling Method: Built In Pump Detection Principle: Electrochemical
Install Method: Wall Mounted, Pipe, Confined Space Display: Color Screen
Power Supply: 12-36Vdc Signal Output: 4-20mA And RS485
Material: Die-cast Aluminum Case And Stainless Steel Air Chamber Explosion Proof Construction: Ex D IIC T6 Gb, IP67
High Light:

Fixed H2S Gas Detector


RS485 H2S gas monitor


MODBUS 4 H2S gas monitor

Product Description


Sensor H2S RS485 MODBUS 4 Gas H2S Monitors Fixed H2S Gas Detector IECEX ATEX


A Professional: We have been focused on gas detection devices for more than 10 years and been cooperating with PB group, PetroChina, Sinopec, Huawei, Samsung, Panasonic, etc famous companies. We are with rich experience to provide you professional solutions.

B Innovation: Strong R&D team (invest 40% revenues into research and experienced engineers team) makes our products stand out in the market.
C Quality: International top brands sensor and IC /100% production test, make sure a good quality.
D Professional technical support: Provide detailed pre-sales and after-sales technical support, no need to worry about any problem during usage.
E Completed certifications: ATEX / IECEX / SIL / CE / CNEX / ISO9001/, meet government standard as well guarantee your safety health.
F Services: We provide 24*7 hours service, if there have any question, Celia will reply you in 1 hours. Meanwhile, we can provide OEM services.
G Delivery: We can ship it out in 2-3 days. For some mass production and special customised gas analyzer, we can ship it out in 7 days.



Sensor H2S RS485 MODBUS advantage:


  • With internal suction pump, fast response
  • Up to 6 kinds of gases can be detected at the same time. In complex and multi-gas environments, multiple installations can be reduced, saving time and effort.
  • 2.4-inch industrial-grade high-definition color screen with a resolution of 320*240 and a wide viewing angle of 120 degrees.
  • With wireless module, data can be uploaded to the cloud platform, environmental protection bureau or other
  • Platforms, providing SMS reminder function, the transmission signal is not limited by distance, and can be viewed in real time on mobile phones and computers. (optional)
  • With full software automatic verification function and zero calibration function, making gas monitoring more accurate and more reliable.
  • Standard 4-20mA current signal, RS485 modbus signal, 1 set of relay signal output
  • Standard infrared remote control, which can remotely control the detector and modify the detector settings.
  • With sound and light alarm function, there is sound and light alarm when reaching the alarm point. (optional)


YT-98H-WH / YT-98H-WH-A series is a built-in pump-suction single & multi gas detector, which can detect 1-6 kinds of gases simultaneously and continously. With IECEx, ATEX certificate (on-going) and non-contact magnetic wand design, it can be installed and operated in explosion proof areas in Oil & Gas industry. In addition to 3-wire 4-20mA output with relay, it also offers Modbus protocols, making it compatible with most control systems. With optional wireless function, operator can view data on laptop, mobile phone or cloud system remotely.



Sensor H2S RS485 MODBUS Specification


Sampling method Built in pump
Pump flow rate 0.35-0.5 L/Min

Gas detected

Oxygen(O2), Combustible gases(EX/LEL), Carbon monoxide(CO), Hydrogen sulfide(H2S), according to customer's requirements

Detection principle

Catalytic combustion/Infrared Ray(LEL), Electrochemistry(O2 CO H2S), sensor and ic are imported from UK, fast response and high precision

Install method

Wall-mounted, piping type, flow-type (according to the detected environment)

Measure range

O2: 0-30%VOL/0-25%VOL, EX: 0-100%LEL/0-100%VOL, CO: 0-500ppm/0-1000PPM/0-2000ppm, H2S: 0-100ppm/0-200PPM(Measure range is optional)


VOC: 0.001ppm, 0.01ppm, 0.1ppm, 1ppm; O2: 0.01%VOL, EX: 1%LEL/0.01%VOL, CO: 0.1ppm/1PPM/1ppm, H2S: 0.01ppm/0.1PPM


≤± 2% FS

Signal output

4-20mA, RS485, 1 set of relay output; 1-5VDC(optional), 2 sets of relay output(optional)

Response time


Recovery time




Linearity error


Zero shift



High-light nixie tube display

Connection mode

G1/2 external thread explosion-proof flexible pipe


ppm, mg/m3, g/m3, %LEL, %VOL


-20 to 50°C




Ex d IIC T6 Gb

Degree of protection



Sound, light

Operating time



286*202*96mm (H x W x D)


3.4kg (3.8kg with alarm light)


RS485 MODBUS 4 H2S Gas Monitor Fixed H2S Gas Detector IECEX ATEX 0


RS485 MODBUS 4 H2S Gas Monitor Fixed H2S Gas Detector IECEX ATEX 1


Pictures from customer for Sensor H2S RS485 MODBUS



RS485 MODBUS 4 H2S Gas Monitor Fixed H2S Gas Detector IECEX ATEX 2

RS485 MODBUS 4 H2S Gas Monitor Fixed H2S Gas Detector IECEX ATEX 3



Contact information:


Celia Wu


Mobile/WhatsApp/Wechat: +86 15889417475

Skype: celia.wu888



Contact Details
Celia Wu

Phone Number : 0086 15889417475

WhatsApp : +8615889417475