Portable Gas Detector for Single Gas

The 900 series pump-suction portable gas detector is a detection device that can continuously monitor gas. It is equipped with a small gas pump, and the power supply drives the gas pump to extract gas samples from the gas in the test area. Then the sample gas is sent to the instrument for detection.

The portable gas detector is equipped with a 1800mA capacity battery, which is light and easy to carry. It can detect the composition and concentration of various gases in the environment. Accurately capture the slight changes in gas concentration, so as to timely discover potential safety hazards.

★★★★★

  • Short delivery time
  • Better price
  • Customizable parameters

Features

  • It uses a high-precision, low-temperature drift amplifier and a stable power supply processing circuit;
  • TFT3.5-inch full-color display, graphic menu, providing real-time detection;
  • Trend analysis chart:
  • USB interface high-speed data transmission, can download and print data;
  • Meet the explosion-proof certification, explosion-proof level: ExialCT4;
  • Anti-slip, waterproof, dustproof;
  • With self-calibration function, zero point calibration function, multi-point calibration function;
  • With temperature and pressure compensation, it can perfectly realize the compensation of gas concentration under different temperature and pressure environments;
  • Gas concentration units PPM, mg/m3, %VOL, %LEL can be quickly switched to display;
  • With self-programming function, alarm parameters, STEL and TWA function parameters can be set;

Specifications

Detection range:0-100%LEL, 0-1%/10%/30%/100%VOL, 0-5/10/100/1000/10000ppm, mg/m³ (depending on the sensor principle)
Resolution:0.01, 0.1%
Display mode:LCD display
Display contentGas name, range unit, measured value, time, battery remaining, air pump, sound, alarm status, concentration
Graph, etc.
Temperature and humidity:Temperature detection range: -40 ～120℃ (optional), humidity detection range: 0-100%RH
Detection principle:Electrochemistry, infrared NDIR, PID photoionization, catalytic combustion
Linear error:≤±1%
Zero drift:≤±1% (F.S/year)
Repeatability:≤±1%
Detection accuracy:≤±3%
Response time:≤20 seconds (T90)
Recovery time:≤20 seconds
Signal output:USB (charging and communication)
Battery capacity:3.6VDC, 1800mA , with charging protection function
Alarm mode:Sound and light alarm, vibration alarm, visual alarm, sound and light + vibration + visual alarm, shutdown alarm
Working power supply:DC3.6V
Explosion-proof type:Intrinsically safe
Protection level:IP66 rain and water splash proof, dustproof
Storage data:Standard 100,000 data capacity, larger capacity can be customized, or data export
Sensor life:More than 3 years
Dimensions and weight:125×52×30mm(L×W×H) /200G
Portable-Gas-Detector-dimensions

Portable gas detector sampling probe selection:

NameSpecificationsNotes
Stainless steel sampling handle
(304)		Length 0.4 m, with micro stainless steel dust filterEquipped with 1 meter hose, which can be extended, maintainable, for gas sampling within 80℃
Stainless steel sampling handle
(316L)		Length 1.2 m, with micro stainless steel dust filterEquipped with 1 meter hose, which can be extended, maintainable, for gas sampling within 200℃ (short time)
High temperature sampling filter cooling handle 400℃Sampling probe 0.3 m, 400°C, with filter2 meter cooling hose, filters water vapor and dust (must be equipped for portable smoke detection)
High temperature sampling filter cooling handle 800℃Sampling probe 0.7 m, 800°C, with filter
High temperature sampling filter cooling handle 1300℃Sampling probe 1.0 m, 1300°C, with filter
Pump-type-Portable-Gas-Detector

Pump-suction Type vs. Diffusion Type

The diffusion type gas detector is a gas in the detection area that flows slowly into the instrument with the free flow of air for detection. This method is affected by the detection environment, such as ambient temperature, wind speed, etc. The characteristic of the diffusion type gas detector is low cost.

The characteristics of the pump-suction type detector are fast detection speed, long-distance measurement of dangerous areas, and safety of maintenance personnel. Others are the same as the diffusion type gas detector. The sample gas is detected by the sensor of the instrument and then amplified and sorted by the circuit to convert it into the corresponding value displayed on the screen.

Portable-Gas-Detector-for-Propane
Portable-Gas-Detector-for-Ozone

Gas Concentration and Leak Detection

Featured Applications

Fixed Gas Detector with Remote Sensor is mainly used in environments where data needs to be viewed outdoors for confined space detection. It also has on-site data display function, explosion-proof sound and light alarm function, detection concentration signal conversion and transmission function, relay output control and other functions.

Suitable for use in incubators, confined spaces, and non-contact gas monitoring environments. The sampling method can be set to a pump suction type by adding an air pump, and changes can be made according to the actual requirements of the site.

  • Industrial field: widely used in petroleum and petrochemical, chemical plants, smelters, steel plants, coal plants, thermal power plants and other industries. Used to monitor the oxygen concentration in the production process. Prevent safety accidents such as explosions and fires.
  • Medical field: In the intensive care unit, operating room, ambulance and other places of the hospital, it is used to monitor the oxygen supply of patients to ensure the safety of patients.
  • Scientific research field: In scientific research laboratories, it is used for gas composition analysis and control in various experimental processes to ensure the accuracy and reliability of experimental results.
  • Other fields: It can also be used in environmental monitoring, school scientific research, building construction, fire alarm, sewage treatment, garbage treatment plants, tunnel construction, oil pipelines, gas stations and other places. Ensure personnel safety and normal operation of equipment.

Technical Support

Instructions for Using a Portable Gas Detector:

I. Before Use

  1. Before use, carefully read the portable gas detector’s instruction manual and familiarize yourself with its performance and operation.
  2. Check the battery level for sufficient charge. If low, replace the battery immediately.
  3. Check the air inlet filter for any obstructions. If so, clean or replace it.
  4. During the power-on self-test, verify the accuracy of the graded audible, visual, and vibration alarms. If not, discontinue use and calibrate immediately.

II. During Use

  1. When using a portable gas detector, wear it as close to your mouth and nose as possible, such as at the front of your clothing or in your shirt pocket. Do not place the detector in a pocket or other inaccessible area, as this may affect the measured values.
  2. Avoid impact during use, which may cause abnormal test data.
  3. The portable gas detector’s sensor and other components are precision components. Do not open the cover of an adjusted instrument. During use, ensure that water and impurities are prevented from entering the instrument to prevent abnormal data.
  4. During use, if any abnormalities occur, such as the indicator light flashing continuously, the display suddenly displaying no values, or the display remaining inactive in areas with clearly exceeded gas levels or exhibiting large discrepancies, immediately stop operation and evacuate to a fresh air area to investigate the cause and promptly resolve the issue. Otherwise, do not continue using the device.

III. After Use

  1. After using the portable gas detector, press and hold the power button. The display will show a 5-second countdown. After the countdown ends, the LCD will display “off,” followed by no display, and the device will shut down. Do not directly remove the battery to force a shutdown.
  2. After shutting down the device, clean any dust and ensure proper cleaning.
  3. When the device is not in use for an extended period, it should be turned off and stored in a dry, dust-free environment at a suitable storage temperature.
  4. Portable gas detectors must be managed by a dedicated person to prevent loss of the device, which could affect normal use.

In summary, this is how to use a portable gas detector. It is worth noting that when using the portable gas detector, we also need to perform regular maintenance on the portable gas detector. Only in this way can we maximize the detection efficiency of the portable gas detector and ensure the accuracy of its data.

Portable gas detectors primarily use sensor technology to detect gas concentrations in the air. As the core component of the detector, the gas sensor converts gas concentration into an electrical signal through chemical or physical reactions with gas molecules. This conversion process relies on sensitive elements within the sensor, which can detect the presence of specific gases and respond accordingly.

Common gas sensor detection principles:

  1. Electrochemical Sensor: When the target gas enters the sensor, a redox reaction occurs on the electrode surface, generating an electric current. The magnitude of this current is proportional to the gas concentration.
  2. Catalytic Combustion Sensor: The gas undergoes an oxidation reaction with oxygen on the surface of the catalytic element, generating heat, which causes the sensor temperature to rise, the thermal resistance to change, and an electrical signal to be generated.
  3. Infrared Optical Sensor: Different gases selectively absorb infrared light of specific wavelengths. The gas concentration is calculated by measuring the absorption intensity.
  4. Semiconductor Sensor: Gas molecules react with the surface of the semiconductor material, changing its conductivity.
  5. Photoionization Detector: High-energy ultraviolet light (typically 10.6 eV) is applied to gas molecules, ionizing them to form an ion stream. The intensity of the ion stream is proportional to the gas concentration.
  6. TDLAS Laser Gas Detection: TDLAS technology modulates the wavelength of light emitted by a semiconductor laser and analyzes the laser spectrum after it passes through the gas to calculate the gas concentration.

Sino-Inst’s 900 series detectors, single-function detectors, are lighter and more convenient, suitable for occasions where specific gases need to be detected quickly.

Sino-Inst is engaged in the research and development, production and sales of gas detectors, and is committed to providing customers with efficient, accurate and reliable detection equipment. We provide portable mobile online gas detectors, hand-pushed mobile pump-suction gas detectors, point-type online gas detectors, fixed all-in-one gas detectors, high-temperature combustible gas detectors and other gas detectors. Meet customers’ gas detection needs in different fields and scenarios.

If you need to purchase a portable gas detector, please feel free to contact our sales engineer!

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