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MEWOI-MS500 5in1 toxic and harmful gas detectorportable composite gas analyzer,GASES COMBUSTÍVEIS DE DETECTOR

Default Gases to be detected

EX(Inflammable and Explosive Gases)

Other Configuration Options:



MEWOI-MS500 portable composite gas detector can be used in: rapid detection of a variety of gas concentration and measurement of environmental temperature and humidity, if the measurement exceeded the limit value, the alarm will sound. MS500 adopted 2.5-inch high-definition color screen for real-time display, adopted the gas sensors of internationally well-known brands, and the main detection principles include: electrochemical, infrared, catalytic combustion, thermal conductivity, PID photoionization, and so on. Advanced electric circuit design, mature kernel algorithm processing, unique external appearance design, had achieved a number of patents about the software works, external appearance, and so on. MS500 is suitable for detecting the concentrations of gases in the atmosphere environment in the pipeline or confined space; and the purity of the gas leakage and various high concentration single gases with the background gas as nitrogen gas or oxygen gas. The types for detection are more than 500 types.


1,It is possible to simultaneously detect 1 ~ 5 types of gases, and the units can be switched freely, Units that can be selected: PPM, mg/m3, Vol%, LEL%, PPHM, ppb, mg/l.

2,Built-in pump-suction type measurement, integrated with the water vapor, dust filter, so as to prevent the damage of sensors and instruments due to the water vapor and dust, it can be used in the high humidity, and high dust environment, and the response is fast

3,2.5-inch high-definition color screen, display the information such as real-time concentration, alarm, time, temperature, humidity, storage, and so on; the menu interface adopted high definition simulation graphics to display the function name of each menu.
4,Function of large-capacity data storage (capacity can be customized), and multiple storage modes are supported

  Standard configuration is the data storage capacity for 100, 000 entries; real-time storage and fixed time storage are supported, or only the data of the alarm concentration will be stored; it is supported to use the local host to view, and delete data, and upload the data via USB, RS232 interface or infrared communication to the computer for data analysis or printing.

5,Various kinds of communication interfaces and printing functions

  Infrared communication interface (optional configuration), RS232 interface (optional configuration), USB interface automatic recognition, and the external mini wireless infrared printer is an optional configuration.

6,High temperature gas detection (optional)

  The optional high-temperature sampling and cooling filter handle or high-temperature high-humidity pretreatment system will be possible to detect the smoke gas at the temperature of 800 . The detection for the gases at higher temperatures can be customized.

7,It is possible to switch among three display modes

  Simultaneously display the concentrations of six types of gases, repeatedly display the concentration of single-channel gases in large font, and display the real-time curve.

8,Graphical display, and use the form of curve to reflect the trend of gas concentration changes in a certain period of time.
9,Data recovery function; in case of mis-operation, it is possible to select partial or full recovery.
10,It is possible to set whether to display the maximum value, minimum value, average value or not.
11,Standard USB charging port, with charging protection function, USB hot-plug supported, and the charging status instrument can work properly.
12,5500mA high capacity rechargeable polymer battery is adopted, so it is possible to work for a long period of time.
13,High-precision temperature and humidity measurements (optional configuration).
14,Real-time detection or timing detection is supported; when no detection will be done, it is possible to shut down the pump so as to extend the startup time.
15,Multiple alarm modes, and multi-directional and three-dimensional indication alarm states.

  It includes sound & light alarm, display screen visual alarm.

  Alarm types include: concentration alarm, under-voltage alarm, and failure alarm.

16,Multiple alarm mode settings: low alarm, high alarm, interval alarm, and weighted average alarm.
17,Mis-operation recognition function: automatic recognition and prevention of the concentration calibration mis-operation, which is possible to avoid the poor performance that may be caused by human factors.
18,Zero-point automatic tracking; long-term use will not be affected by the zero drift.
19,Multi-level calibration for target points, can ensure the linearity and accuracy of the measurements.
20,Chinese and English interfaces can be selected.
21,Broad operating temperatures: -40+70, and temperature compensation is  supported.
22,Log recording
  Record the calibration logs, repair logs, failure history, failure countermeasure solutions, sensor service life due reminder, and function of reminder for the time of next concentration calibration.
23,Meet the requirements on the design of the intrinsically safe circuits, such as anti-static, anti-electromagnetic interference.
24,Protection level is up to IP66, and it is possible to prevent the splash water, dust, and shock.


Gases to be detected

Arbitrary combination of 1 ~ 5 types of gases such as toxic gases, oxygen gas, carbon dioxide, inflammable and explosive gases, TVOC, and so on.

Optional configuration: temperature and humidity measurements.

Application scenarios

All the cases which requires the portable rapid detection of gas concentrations such as petroleum, chemical, pharmaceutical, environmental protection, combustion gas distribution, warehousing, smoke gas analysis, air governance, and so on.

Detection range

0 ~ 1, 10, 100, 1000, 5000, 50000, 100000ppm, 200 mg/L, 100%LEL, 20%, 50%, 100%Vol, can be selected; and other ranges can be customized.


0.01ppm or 0.001ppm (0 ~ 10 ppm);

0.01ppm (0 ~ 100 ppm),

0.1ppm (0 ~ 1000 ppm),

1ppm (0 ~ 10000 ppm or more),

0.01 mg/l (0 ~ 200 mg/l),

0.1% LEL,


0.001% Vol

Detection principle

Electrochemical, catalytic combustion, infrared, thermal conductivity, PID photoionization, and so on, depending on the type of gas, range, field environment and user demand.

Allowable error

≤±2% F.S (other or higher precision levels can be customized)



Response time

T90≤20 seconds





Working environment

Temperature: -40 ~ + 70 , humidity: ≤10 ~ 95% RH, and built-in filters can be used in high humidity or high dust environment.

Recovery time

≤30 seconds

Sample gas temperature

-40 ~ + 70 , and the optional configuration of high-temperature sampling and cooling filter handle will be possible to detect the smoke gas at the temperature of 800 or higher.

Temperature and humidity measurement

Optional configuration: temperature at -40 ~ + 70 , accuracy level at 0.5 ; humidity at  0 ~ 100% RH,  precision level at 3 % RH

Power supply

3.7VDC6000mAh  high capacity rechargeable polymer battery

Display mode

2.5-inch high-definition color screen

Detection mode

Built-in pump-suction type measurement, and flow rate at 500 ml / min. Calibration flow rate should be greater than 500 ml / min, three-way pipe should be connected, so as to ensure that the excessive gas will be discharged from the bypass

Alarm mode

It is possible to set as sound & light alarm, vibration alarm, sound & light + vibration alarm, Turning off the alarm.

Communication interface

USB (charging and communication), optional: RS232, infrared communication, automatic recognition

Data storage

Standard configuration is the data storage capacity for 100, 000 entries

Protection level


Explosion-proof type

Intrinsically safe type

Explosion-proof mark

Exia II CT6

Exterior dimensions




Standard accessories

Manual, qualification certificate, warranty card, USB charger (including the data cable), high-grade aluminum  instrument case, belt clip, humidity dust filter

Optional items

Temperature and humidity measurement function, 1.2 m retractable sampling handle (1-10 meter hose, and the standard length is 1 meter), 0.4 meter stainless steel sampling handle (with dust filter, not retractable), high temperature sampling and cooling filter handle, high temperature humidity pretreatment system, multiple humidity dust filter, hanging rope, CD-ROM (upper level computer communication software), external mini wirelessBluetooth printer

After Sales