



4-in-1 Gas Detector-HRP-B1000-C
The equipment features an integrated and compact design, making it lightweight and easy to operate. It supports both wearable and one-handed operation. Equipped with four imported independent sensors, it ensures accurate detection of each gas without cross-interference. It also features a high-definition LCD backlit display screen that displays the concentration data of the four gases in real time. With multi-level intelligent alarms and long battery life, it can adapt to harsh industrial environments such as high temperature, high humidity, and dust, fully protecting the lives of operators.
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- Gases and Ranges
The HRP-B1000-C is a portable four-in-one gas detector, a standard emergency detection device in the industrial safety field. Designed specifically for confined space operations and emergency rescue personnel, it can detect four core gases: flammable gas (LEL), carbon monoxide (CO), hydrogen sulfide (H₂S), and oxygen (O₂). This comprehensive safety solution is suitable for complex environments and is an essential piece of equipment for high-risk industries. It effectively prevents safety accidents such as gas poisoning, explosions, and oxygen deficiency.
1.Multi-gas synchronous monitoring: it can be flexibly configured to detect combustible gas, oxygen, carbon monoxide, hydrogen sulfide and other gases at the same time to meet the needs of different high-risk environments.
2.Specific gas detection: for specific industries, such as chemical industry and refrigeration, there are special models for detecting dichloromethane and halogen gas, which have high sensitivity and strong anti-interference ability.
3.Pump-suction sampling: Some models have built-in sampling pumps, which can be used to remotely sample and detect hard-to-reach areas (such as the inside of pipelines and storage tanks) through probe pipes, thus expanding the detection range.
Portable Four-in-One Gas Detector
Product Overview
Portable four-in-one gas detector is a personal gas monitoring device specially designed for industrial safety protection, which can detect four dangerous gases at the same time. Common detection combinations include combustible gas (LEL), oxygen (O₂), carbon monoxide (CO) and hydrogen sulfide (H₂S), which can provide workers with comprehensive protection against toxic gas, hypoxia, oxygen enrichment and explosion risk.
The equipment adopts advanced sensor technology and has the functions of real-time monitoring, multiple alarms and data recording, which can continuously detect the change of gas concentration in the environment and give an alarm in time when dangerous situations occur. The product is small in size, easy to carry and easy to operate. It is widely used in oil and gas, petrochemical industry, mines, sewage treatment, fire rescue, confined space operation and other fields, and is an important equipment to ensure the safety of industrial site personnel.
Principle of Operation
The detector adopts natural diffusion sampling method to continuously monitor the surrounding air environment. The target gas enters the detection area of the sensor through diffusion, and various sensors independently measure the corresponding gas.
The signal collected by the sensor is converted into accurate concentration data after analysis and calculation by the internal microprocessor, and displayed on the LCD screen in real time.
When the concentration of any gas exceeds the preset alarm value, or the oxygen concentration exceeds the safe range, the equipment will immediately start the triple alarm system of sound, light and vibration to remind the staff to take timely measures to reduce the safety risk.
According to different application requirements, the equipment can be configured as follows:
- Electrochemical sensor (oxygen, toxic gas)
- Catalytic combustion sensor (combustible gas)
- Infrared sensor (hydrocarbon gas, carbon dioxide)
- PID photoionization sensor (volatile organic compound VOC)
Main Application Industries
Oil and Gas Industry
It is widely used in drilling platforms, refineries, LNG receiving stations, natural gas transmission and distribution stations, storage tank areas, oil and gas pipelines and other places, which can effectively monitor the risks of combustible gas leakage and toxic gas and ensure the safety of workers.
Petrochemical Industry
It is suitable for chemical production equipment, reaction kettle area, storage tank area, dangerous chemical warehouse and other environments, and can deal with various gas risk factors at the same time to improve the safety management level of enterprises.
Sewage Treatment and Environmental Protection Industry
In sewage treatment plants, pumping stations, underground pipe networks and landfill sites, the concentration changes of dangerous gases such as hydrogen sulfide, methane and oxygen can be monitored in real time to prevent poisoning and explosion accidents.
Mine and Tunnel Engineering
It is suitable for coal mine, metal mine, underground tunnel construction and other scenes, and can monitor the concentrations of methane, carbon monoxide and oxygen in real time to reduce the risk of underground operation.
Fire Rescue and Emergency Response
It is widely used in hazardous chemical accident disposal, gas leakage detection, fire site assessment and emergency rescue operations, providing reliable gas detection guarantee for rescuers.
Confined Space Operation
It is suitable for storage tanks, underground pipe corridors, inspection wells, sewers, closed containers and other confined space environments. It is an important safety equipment for personnel to detect before entering and continuously monitor during operation.
Electric Power and Public Utilities
It can be used for the maintenance of power plants, substations and public facilities, and real-time monitoring of dangerous gases that may be generated during industrial operation.
Product Advantage
Simultaneous Detection of Four Gases
A single device can monitor combustible gas, oxygen, carbon monoxide and hydrogen sulfide at the same time, providing all-round gas safety protection for workers.
High Precision Sensor Technology
The industrial-grade high-performance sensor has the characteristics of high sensitivity, fast response and good long-term stability, ensuring accurate and reliable detection results.
Real-Time Continuous Monitoring
Continuous detection of gas concentration changes in the environment around the clock helps staff find potential dangers in time and avoid accidents.
Triple Alarm Protection
It integrates sound alarm, bright LED flash alarm and vibration alarm, and can find alarm information in time even in high noise environment.
High Definition LCD Screen
Equipped with a large backlit LCD display screen, it can simultaneously display various gas concentrations, alarm status, battery power and equipment operation information, making reading more intuitive and convenient.
Rugged and Durable Industrial Design
Made of high-strength engineering materials, it has excellent impact resistance, dustproof and waterproof performance, and can adapt to various complex and harsh industrial environments.
Super Long Endurance
Low-power circuit design combined with high-capacity rechargeable lithium battery can meet the needs of long-term continuous operation and reduce the impact of frequent charging.
Data Storage and Event Recording
Support gas concentration record, alarm record, calibration record and operation log storage, which is convenient for safety management, equipment maintenance and accident analysis.
Intrinsically Safe Explosion-Proof Design
It meets the industrial explosion-proof safety requirements, can be safely applied to inflammable and explosive dangerous places, and meets the safety standards of petroleum, chemical industry, mining and other industries.
Simple Operation and Convenient Maintenance
Humanized operation interface, simple calibration process, reducing training cost and improving on-site use efficiency.
Product Features
- Simultaneous monitoring of four dangerous gases
- Detection of combustible gas (LEL), oxygen (O₂), carbon monoxide (CO) and hydrogen sulfide (H₂S)
- Real-time concentration display
- Triple alarm of sound, light and vibration
- High performance industrial-grade sensor
- Large-capacity rechargeable lithium battery
- Alarm and event data recording
- IP66/IP67 protection grade
- Intrinsically safe explosion-proof design
- Small and light, strong and durable
Provide Reliable Guarantee for Dangerous Environment Operation
Portable four-in-one gas detector can provide continuous, accurate and reliable gas monitoring and early warning function in petroleum refining plant area, chemical production workshop, underground mine, sewage treatment facilities and confined space working environment. Through advanced sensor technology, rapid alarm mechanism and durable industrial design, the risks of gas leakage, poisoning, hypoxia and explosion are effectively reduced, and the safety production of enterprises and the health of personnel are escorted.
Single Gas Detec
- Detected Gase: Combustible gases, toxic and hazardous gases, oxygen, and TVOC
- Detection Principle: Catalytic combustion, electrochemical, NDlR,PID,semiconductor
- Detection Mode: natural diffusion
- Measuring Range: 0-1000 ppm; 0-100% LEL; 0-100% VOL
- Measurement Accuracy: ≤ 3% F.S.
- Response Time: Combustible gases< 30 s; Toxic gases < 60 s
- Alarm Modes: Audible, visual, and vibration alarms with status indicators
- Data Storage: 1000 records
- Setting Method: Button
- Power supply: DC 3.7V
- Battery Type: 2000 mAh rechargeable lithium battery
- Charging Time: 6-8 hours
- Battery Runtime: >8H
- Operating Temperature: -10℃~+55℃
- Relative Humidity: ≤ 95% (non-condensing)
- Pressure Range: 86 kPa- 106 kPa
- Explosion-Proof Type: Intrinsic Safety
- Explosion-Proof Rating: II 2G Ex db IIC T6 Gb
- Ingress protection: IP66
- Enclosure Material: ABS engineering plastic
- Dimensions: 145*70*35 mm
- Product Weight: 250 g

Usb cable(Standard):
This Micro USB cable features thickened copper cores and high-density nylon braiding, offering excellent resistance to bending and abrasion for long-lasting durability.
Portable Calibrator Calibration Gas Cylinder(Optional):
The high-precision standard gas supply device designed by portable gas detector is used for periodic calibration, zero correction and range verification of sensors in the field or laboratory to ensure the accuracy and reliability of long-term operation data of testing equipment.
Calibration Hood(Standard):
The compact calibration cover designed by portable hand-held gas detector is used to quickly and accurately complete the zero calibration and range calibration of sensors on the equipment site. It is small, light and precise in structure, which ensures that the standard gas can cover the sensor probe efficiently and avoid the interference of ambient airflow. It is an indispensable professional accessory for daily maintenance and compliance testing.
Air Sampling Probe(Optional):
The high-precision and long-distance gas sampling extension tool designed by portable hand-held gas detector is used to safely and stably extend the probe into narrow space, high place, deep well, pipeline or dangerous area for remote gas detection, which greatly improves the operation safety and detection coverage.Typically used with sampling tubes.
Portable Hand-held Gas Detector Charger(Standard):
The high compatibility, safe and reliable charging solution designed by portable hand-held gas detector includes a standard two-pin plug power adapter and a USB-A to Micro-USB/Type-C data cable (matched according to the equipment interface), which ensures that the equipment can quickly recover power after field inspection, factory duty or emergency tasks, and ensures continuous and stable operation.
Extended Sampling Tube(Optional):
The portable hand-held or pumping gas detector is designed with a high flexibility and corrosion resistance to extend the sampling catheter, which is used to extend the gas inlet of the equipment to the detection points that are difficult to directly contact, such as the depth of the pipeline, the equipment interlayer, the high vent, the inside of the closed container, etc., so as to realize "remote accurate sampling" and greatly improve the detection coverage and operation safety.
Water Vapor and Dust Filter(Optional):
Blocks solid particles from entering the detector's gas path, preventing blockage and avoiding particle adhesion to the sensor surface, which could cause sensor poisoning, decreased sensitivity, slowed response, or even permanent failure. It also avoids physical interference from dust, ensuring the sensor only contacts the measured gas, thus guaranteeing measurement accuracy.
| Name | Chemical Formula | Lower Explosive Limit(Volume Fraction)in Air%VOL|Lower Limit | Serial No | Name | Chemical Formula | Lower Explosive Limit(Volume Fraction)in Air%VOL|Lower Limit | |
| 1 | Ethane | C₂H₆ | 3.0 | 49 | Cyclohexane | CH₂ (CH₂)₄CH₂ | 1.2 |
| 2 | Ethanol | C₂H₅OH | 3.4 | 50 | Cyclohexanol | CH₂ (CH₂)₃CHOHCH₂ | 1.2 |
| 3 | Ethylene | C₂H₄ | 2.8 | 51 | Cyclohexanone | CH₂ (CH₂)₃COCH₂ | 2.8 |
| 4 | Hydrogen | H₂ | 4.0 | 52 | Cyclopropane | CH₂CH₂CH₂ | 2.4 |
| 5 | Methane | CH₄ | 5.0 | 53 | Decane | C₁₀H₁8 | 0.7 |
| 6 | Methanol | CH₃OH | 5.5 | 54 | Cyclohexene | CH₂ (CH₂)₃CHCHCH₂ | 1.2 |
| 7 | Acetylene | C₂H₂ | 2.5 | 55 | Diacetone Alcohol | (CH₃)₂COHCH₂COCH₃ | 1.8 |
| 8 | Propanol | C₃H₇OH | 2.5 | 56 | Di-n-butyl Ether | C₄H₉OC₄H₉ | 0.9 |
| 9 | Propane | C₃H₈ | 2.2 | 57 | Dichlorobenzene | (C₆H₄)Cl₂ | 2.2 |
| 10 | Propylene | C₃H₆ | 2.4 | 58 | Diethylamine | (C₂H₅)₂NH | 1.7 |
| 11 | Toluene | C₆H₅CH₃ | 1.2 | 59 | Dimethylamine | (CH₃)₂NH | 2.8 |
| 12 | Xylene | C₆H₄ (CH₃)₂ | 1.0 | 60 | Dimethylaniline | (CH₃)₂C₆H₃NH₂ | 1.2 |
| 13 | Dichloromethane | C₂H₄Cl₂ | 5.6 | 61 | Dicyclohexylamine | (CH₂)₄O₂ | 1.9 |
| 14 | Dichloroethylene | C₂H₂Cl₂ | 6.5 | 62 | Ethylene Oxide | OCH₂CH₂CH₂ | 1.9 |
| 15 | Dichloropropane | C₃H₆Cl₂ | 3.4 | 63 | Diethyl Ether | C₂H₅OC₂H₅ | 1.8 |
| 16 | Diethyl Ether | C₂H₅OC₂H₅ | 1.7 | 64 | Ethyl Acetate | CH₃COOC₂H₅ | 2.1 |
| 17 | Dimethyl Ether | CH₃OCH₃ | 3.0 | 65 | Ethyl Acrylate | CH₂CHCO₂C₂H₅ | 1.7 |
| 18 | Formaldehyde | CH₂OCH | 4.0 | 66 | Styrene | C₆H₅C₂H₃ | 1.0 |
| 19 | Acetic Acid | CH₃COOH | 4.0 | 67 | Ethylene Oxide | CH₂CH₂O | 2.6 |
| 20 | Acetone | CH₃COCH₃ | 2.3 | 68 | Ethanethiol | C₂H₅SH | 2.3 |
| 21 | Acetyl Chloride | (CH₃CO)₂CH₂ | 1.7 | 69 | Ethyl Mercaptan | C₂H₅SCH₃ | 2.0 |
| 22 | Chloroform | CH₃COCl | 5.0 | 70 | Methyl Ethyl Ketone | C₃H₇COCH₃ | 1.8 |
| 23 | Acrylonitrile | CH₂CHCN | 2.8 | 71 | Ethylamine | C₂H₅NH₂ | 3.5 |
| 24 | Allyl Chloride | CH₂CHCH₂Cl | 3.2 | 72 | Gasoline | — | 0.9 |
| 25 | Methylacetylene | CH₃CCH | 1.7 | 73 | Kerosene | — | 0.7 |
| 26 | Amyl Acetate | CH₃CO₂C₅H₁1 | 1.0 | 74 | Turpentine | — | 1.8 |
| 27 | Aniline | C₆H₅NH₂ | 1.2 | 75 | Nitrobenzene | C₆H₅NO₂ | 1.8 |
| 28 | Benzene | C₆H₆ | 1.2 | 76 | Nitromethane | CH₃NO₂ | 7.1 |
| 29 | Benzaldehyde | C₆H₅CHO | 1.4 | 77 | Phenol | C₆H₅OH | 1.3 |
| 30 | Benzyl Chloride | C₆H₅CH₂Cl | 1.1 | 78 | Phenylacetylene | C₆H₅C₂H | 1.1 |
| 31 | Bromobenzene | C₆H₅CH₂Br | 2.5 | 79 | Ethylbenzene | C₆H₄C₂H₅ | 1.0 |
| 32 | Bromoethane | CH₃CH₂Br | 6.7 | 80 | Methyl Formate | HCOOC₂H₅ | 2.7 |
| 33 | Butadiene | CH₂CHCHCH₂ | 2.0 | 81 | p-Dioxane | C₄H₈O₂ | 2.0 |
| 34 | Butane | C₄H₁0 | 1.9 | 82 | Isobutane | i-C₄H₁0 | 1.8 |
| 35 | Butanol | C₄H₉OH | 1.8 | 83 | Naphthalene | C₁₀H₈ | 1.9 |
| 36 | Butylene | C₄H₈ | 1.6 | 84 | Nonane | CH₃ (CH₂)₇CH₃ | 0.7 |
| 37 | Butyraldehyde | C₃H₇CHO | 1.4 | 85 | Nonanol | CH₃ (CH₂)₇CH₂OH | 0.8 |
| 38 | Butyl Butyrate | C₃H₇COOC₄H₉ | 1.2 | 86 | Valeraldehyde | C₆H₁₀0 | 1.2 |
| 39 | Butyl Methyl Ketone | C₄H₉COCH₃ | 1.2 | 87 | Pentane | C₅H₁2 | 1.4 |
| 40 | Carbon Disulfide | CS₂ | 1.0 | 88 | Pentanol | C₅H₁₁OH | 1.2 |
| 41 | Chlorobenzene | C₆H₅Cl | 1.3 | 89 | Propylamine | C₃H₇NH₂ | 2.0 |
| 42 | Chlorobutane | C₄H₉CH₂Cl | 1.8 | 90 | Propyl Methyl Ketone | C₄H₉COCH₃ | 1.5 |
| 43 | Chloroethane | CH₃CH₂Cl | 3.8 | 91 | Pyridine | C₅H₅N | 1.7 |
| 44 | Chloroethylene | CH₂CHCl | 3.8 | 92 | Tetrahydrofuran | C₄H₈O | 2.0 |
| 45 | Chloromethane | CH₃Cl | 8.1 | 93 | Tetrahydrofurfuryl | C₅H₁₀O₂ | 1.5 |
| 46 | 2-Chloropropane | CH₃CHCICH₃ | 2.6 | 94 | Triethylamine | (C₂H₅)₃N | 1.2 |
| 47 | Cresol | C₆H₄OH | 1.1 | 95 | Trimethylamine | (CH₃)₃N | 2.0 |
| 48 | Cyclobutane | CH₂CH₂CH₂CH₂ | 1.8 | 96 | Trioxane | (CH₂O)₃ | 3.0 |
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