Fixed Gas Detector
| Model | ES20B |
| Weight | 1.6kg |
| Certificates | CE Rosh ATEX FCC SIL |
| Detecting Gas | EX O2 H2S CO N2 Ar CO2 etc |
| Mearsuring range | EX:0-100%LEL,O2:0-30%VOL,H2S:0-100ppm，CO:0-500ppm |
Fixed gas detector is widely used in biogas, laboratory, cesspit, Water treatment, chemical industry, laboratory, coal mine, oil mine, warehouse, tunnels,underground pipeline and other places, effectively preventing the happening of the accident.
1. Being compatible with all kinds of controlled alarms, PLC, DCS and other control system, can be remote monitored.
2. Explosion-proof design, fast, reliable and stable. Explosion-proof grade: Ex dⅡCT6
3. With self-calibration function, and three standard keys will be used to realize on-site maintenance.
4. Monitor the NH3 ammonia concentration in environment or pipeline and alarm.
5. Data display, can be connect to on/off valve.
6. Infrared ray controller can remote control alarm point settings, zero calibration, and address modification.
7. Can output one or two on-off signals, can drive ventilator or solenoid valve and other external devices.
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| Product name | Portable single gas detector | |||
| Measuring gas | O2 | CO | H2S | Combustible |
| Measuring range | 0-25%VOL | 0-500ppm | 0-100ppm | 0-100%LEL |
| More Sensor | N2 Ar H2 CL2 HCL HF CO2 SO2 NO2 SF6 etc | |||
| Measuring type | Pump suction | |||
| Response time | T90<30s | |||
| Display | LCD screen | |||
| Audible | ≥85dB at 1m | |||
| Alarm method | Visual, audible and vibrative signals | |||
| Battery | DC3.7V 2700mAh Lithium battery | |||
| Operating time | ≥8h | |||
| Data log | 100,000 events | |||
| Working temperature | Toxic gases: -20℃～50℃ Combustible: -40℃～70℃ | |||
| Working humidity | <95%RH (no condensation) | |||
| Housing | Rubber enclosure | |||
| Standard accessories | Operation manual, charger, USB cable | |||
| Dimension & weight | 200.5*64.8*35.5mm, about 460g | |||
| Ex grade | Ex ia IIC T4 Gb | |||
| Ingress protection | IP65 | |||
Color Customization To Create a Unique Appearance
Recent News
Indonesian Customer Visits Factory
August 08, 2025
During the visit, our engineers worked closely with the customer’s technical team to resolve on-site technical issues, including connecting our equipment to the customer’s own system. The successful integration and smooth operation left a strong impression. As a result, the customer immediately confirmed and signed an order.
Safewill Launches Portable Pinhole‑Type Nitrogen Detector to Boost Food Packaging Safety
July 10, 2025
The Portable Pinhole‑Type Nitrogen Detector (Model ES20B), designed to revolutionize food packaging safety and quality control. This compact, pump‑suction gas detector is engineered to precisely monitor nitrogen (N₂) levels and detect residual oxygen (O₂) and carbon dioxide (CO₂) inside sealed packages—ensuring optimal freshness and shelf life.
Safewill Launches Popular Handheld Dust Monitor ES80A-PDM for Flexible Air Quality Monitoring
June 28, 2025
Safewill, a leading manufacturer and supplier of gas detectors and air quality monitoring systems, has introduced its handheld dust monitor ES80A-PDM, gaining significant popularity in both domestic and international markets.
June 18, 2025
Safewill is proud to announce its participation in the Emergency Disaster Reduction and Rescue (EDRR) Expo 2025, one of Southeast Asia’s leading events focused on disaster preparedness, emergency response, and safety technologies. The exhibition will be held from August 13 to 15, 2025, at the Jakarta International Expo, with Safewill located at Hall A2, Booth H26.
Ghana Client Adopts Customized Outdoor Air Quality Monitoring System with Rainfall Module
June 12, 2025
In a new step toward global environmental monitoring cooperation, a customized Outdoor Air Quality Monitoring System—based on Safewill’s advanced solution for multi-parameter pollution tracking—has been successfully delivered to a client in Ghana. This solution integrates NO₂, SO₂, CO, O₃, VOC, PM2.5, PM10, TSP, and meteorological sensors, and has been specially upgraded with a rainfall monitoring module to meet local environmental research needs.
