UT334E+ portable gas detector monitoring O₂, CO, H₂S and combustible gas simultaneously for tunnels and confined spaces.
Overview
The UT334E+ is a portable 4-in-1 gas detector using natural-diffusion sampling with electrochemical sensors for O2, CO, H2S and a catalytic-bead sensor for combustible gas (EX), monitoring all four gases simultaneously. It has a red-and-black hand-held engineering-plastic body with a dot-matrix LCD showing the four gas readings, plus alarm, data logging and clip-on carrying case. It is suitable for confined-space entry, industrial hygiene and environmental safety monitoring.
Applications
• Occupational health and safety monitoring
• Indoor air quality and environmental assessment
• HVAC system commissioning and maintenance
• Industrial hygiene and safety inspection services
Features
• Portable and lightweight design for on-site field use
• Robust construction suitable for both laboratory and field use
• Compliant with relevant Chinese and international standards
• Complete with calibration certificate and operation manual
Technical Specifications
| Item | Specification |
| Gases | O₂, CO, H₂S, combustible (EX) |
| Sampling | natural diffusion |
| O₂ range | 0–30% VOL |
| CO range | 0–1000 ppm |
| H₂S range | 0–100 ppm |
| EX range | 0–100% LEL |
| Resolution | O₂ 0.1%VOL; CO 1ppm; H₂S 1ppm; EX 1%LEL |
| Units | ppm, %VOL, %LEL |
| Accuracy | EX ±5%FS; CO ±5ppm/±10%; H₂S ±2ppm/±10%; O₂ ±3%FS |
| Response time | T₉₀ ≤ 60s |
| Display | monochrome dot-matrix LCD with backlight |
| Alarm | sound + LED + vibration |
| Features | self-test, alarm logging, CN/EN switch |
| Explosion-proof | Ex ib IIB T3 Gb |
| Operating temp. | -20 to +50°C |
| Operating humidity | <95%RH non-condensing |
| Power | DC 3.7V built-in 2000mAh Li-battery |
| Housing | red/black engineering plastic, hand-held |
| Application | confined spaces, mines, chemical, utilities, fire, construction |
Standards
IEC 61672, ISO 7743, GB/T 3768
Standard Delivery
• Main instrument unit
• Power cable / charger
• Operation manual
• Carrying case
• Calibration certificate
FAQ
Q1: What standards does the UNI-T UT334E+ Portable 4-in-1 Gas Detector comply with?
A1: The UNI-T UT334E+ Portable 4-in-1 Gas Detector is designed and manufactured in accordance with relevant Chinese national (GB) and industry standards, as well as applicable international standards. A calibration certificate is provided with each unit.
Q2: How often should the UNI-T UT334E+ Portable 4-in-1 Gas Detector be calibrated?
A2: We recommend annual calibration by iRoad authorized technicians. For high-frequency use, semi-annual calibration is advised. The instrument is supplied with a factory calibration certificate.
Q3: What is the lead time and do you provide training?
A3: Standard units are usually shipped within 7-15 working days. iRoad provides on-site installation and operator training for major equipment; remote video guidance is available for portable instruments.
Overview
The UT334E+ is a portable 4-in-1 gas detector using natural-diffusion sampling with electrochemical sensors for O2, CO, H2S and a catalytic-bead sensor for combustible gas (EX), monitoring all four gases simultaneously. It has a red-and-black hand-held engineering-plastic body with a dot-matrix LCD showing the four gas readings, plus alarm, data logging and clip-on carrying case. It is suitable for confined-space entry, industrial hygiene and environmental safety monitoring.
Applications
• Occupational health and safety monitoring
• Indoor air quality and environmental assessment
• HVAC system commissioning and maintenance
• Industrial hygiene and safety inspection services
Features
• Portable and lightweight design for on-site field use
• Robust construction suitable for both laboratory and field use
• Compliant with relevant Chinese and international standards
• Complete with calibration certificate and operation manual
Technical Specifications
| Item | Specification |
| Gases | O₂, CO, H₂S, combustible (EX) |
| Sampling | natural diffusion |
| O₂ range | 0–30% VOL |
| CO range | 0–1000 ppm |
| H₂S range | 0–100 ppm |
| EX range | 0–100% LEL |
| Resolution | O₂ 0.1%VOL; CO 1ppm; H₂S 1ppm; EX 1%LEL |
| Units | ppm, %VOL, %LEL |
| Accuracy | EX ±5%FS; CO ±5ppm/±10%; H₂S ±2ppm/±10%; O₂ ±3%FS |
| Response time | T₉₀ ≤ 60s |
| Display | monochrome dot-matrix LCD with backlight |
| Alarm | sound + LED + vibration |
| Features | self-test, alarm logging, CN/EN switch |
| Explosion-proof | Ex ib IIB T3 Gb |
| Operating temp. | -20 to +50°C |
| Operating humidity | <95%RH non-condensing |
| Power | DC 3.7V built-in 2000mAh Li-battery |
| Housing | red/black engineering plastic, hand-held |
| Application | confined spaces, mines, chemical, utilities, fire, construction |
Standards
IEC 61672, ISO 7743, GB/T 3768
Standard Delivery
• Main instrument unit
• Power cable / charger
• Operation manual
• Carrying case
• Calibration certificate
FAQ
Q1: What standards does the UNI-T UT334E+ Portable 4-in-1 Gas Detector comply with?
A1: The UNI-T UT334E+ Portable 4-in-1 Gas Detector is designed and manufactured in accordance with relevant Chinese national (GB) and industry standards, as well as applicable international standards. A calibration certificate is provided with each unit.
Q2: How often should the UNI-T UT334E+ Portable 4-in-1 Gas Detector be calibrated?
A2: We recommend annual calibration by iRoad authorized technicians. For high-frequency use, semi-annual calibration is advised. The instrument is supplied with a factory calibration certificate.
Q3: What is the lead time and do you provide training?
A3: Standard units are usually shipped within 7-15 working days. iRoad provides on-site installation and operator training for major equipment; remote video guidance is available for portable instruments.
