GAS CONCENTRATION METER

WINTACT WT8811

– AIR COMPOSITION ANALYSIS

Professional device for monitoring gas content

The WINTACT WT8811 meter is an advanced device for precise measurement of various gases in the air. Equipped with high-quality sensors, it guarantees reliability, stability, and accuracy of readings.

Thanks to its intuitive operation and compact design, the meter is ideal for use in places where constant monitoring of air composition is necessary. The casing made of durable materials and a non-slip rubber coating protects the device from dust, mechanical damage, and the effects of contact with high concentrations of flammable gases, minimizing the risk of self-ignition.

Applications

The device has a wide range of applications in industries requiring continuous monitoring of air quality, such as:

• oil and chemical industry,
• metallurgy and refining industry,
• environmental protection,
• gas transmission and distribution installations,
• medical and biochemical research,
• agriculture and food production.

Thanks to its versatility and precise sensors, the meter is suitable for both industrial plants and laboratory applications.

Main features and characteristics of the device

✔ Color LCD display – clear presentation of results and system status information.

✔ Precise gas concentration measurement:

• Oxygen (O₂)
• Hydrogen sulfide (H₂S)
• Carbon monoxide (CO)
• Flammable gases (LEL)

✔ Three types of alarms – hazard signaling in the form of:

• audible signal,
• LED indicator,
• vibration.

✔ Built-in measurement log – ability to store and review up to 120,000 records.

✔ Battery charging – efficient lithium power supply with a capacity of 1800 mAh, ensuring long operation on a single charge.

Technical specifications:

1. Gas concentration measurement

• Flammable gases, %LEL, 0~100, 0.1

• Oxygen (O₂), %VOL, 0~30, 0.1

• Hydrogen sulfide (H₂S), µmol/mol, 0~100, 0.1

• Carbon monoxide (CO), µmol/mol, 0~1000, 1.0

2. Measurement accuracy

• ±5% of full scale value (FS).

3. Response time

• Less than 30 seconds (90% of actual concentration).

4. Alarm methods

• LCD screen: real-time data presentation,
• LED indicator: visual signaling,
• Audible and vibration alarm.

5. Operating conditions

• Operating temperature: from -20°C to +50°C,
• Humidity: <95% RH (without condensation).

6. Storage conditions

• Temperature: from -10°C to +55°C,
• Humidity: <85% RH.

7. Power supply

• Operating voltage: 3.7V DC,
• Lithium battery: 1800 mAh,
• Charging time: 6-8 hours,
• Operating time: up to 8 hours of continuous operation (depending on conditions).

8. Dimensions and weight

• Dimensions: 71 × 153 × 49 mm,
• Weight: 218.7 g (with battery).

Safety standards and regulations:

The device meets strict safety and calibration standards in environments at risk of explosion and high gas concentrations:

• GB3836.1—2010 – General requirements for devices in explosive atmospheres,

• GB3836.4—2010 – Intrinsically safe devices,

• GB15322.3—2003 – Detectors for flammable gases (measurement range 0~100% LEL),

• JJG693—2011 – Verification standards for flammable gas sensors,

• JJG365—2008 – Test procedures for oxygen meters,

• JJG695—2003 – Calibration procedures for hydrogen sulfide detectors,

• JJG915—2008 – Test standards for carbon monoxide sensors.

Compliance with the above standards guarantees safe use of the device in places where there is a risk of explosion, high concentrations of toxic substances, or oxygen deficiency.

DESCRIPTION OF THE HOUSING ELEMENTS:

1. Clip-type handle (on the back of the device)
2. Transparent alarm indicator window
3. LCD display
4. Power socket (DC adapter)
5. Return button: press and hold to turn the device on/off, press briefly to return.
6. Left button: move left and up, decrease.
7. Right button: move right and down, increase.
8. Confirmation button: press to confirm operations.
9. Alarm speaker hole
10. Gas sensor hole
11. Sensor cover, calibration.

MAIN MENU INTERFACE

The main menu provides access to the key functions of the device. The user can:

• Start measurement – the ability to perform a single reading or a series of measurements simultaneously.

• View saved data – quick access to measurement history.

• Set alarm thresholds – configuration of warning levels for individual gases.

• Adjust device settings – personalization of functions according to user requirements.

• Enter calibration mode (option for advanced users) – precise adjustment of sensors for even more accurate measurements.

The intuitive interface makes operating the device convenient and quick, with all key options easily accessible from the main menu.

MULTI-POINT MEASUREMENT INTERFACE

In this mode, the device allows for simultaneous measurement of four parameters in real-time.

• Clear presentation of results – all values are displayed simultaneously.
• Automatic signaling of norm exceedance – if any value goes beyond the allowable range, its corresponding number will start to flash.
• Alarm system – if the alarm function is activated, the device will immediately trigger a warning signal.

With this interface, the user can monitor several key parameters in one place, allowing for quick analysis and response.

SINGLE MEASUREMENT INTERFACE

The single measurement mode focuses on one selected value, offering detailed insight into its changes over time.

On the left side of the screen:

• Maximum value,
• Minimum value,
• Average of the last 4 minutes – useful for observing trends.

On the right side of the screen:

• Upper alarm threshold,
• Lower alarm threshold – easy control of warning settings.

In the center of the screen:

• Current value in real-time – key parameter presented in a readable form.

With this organization of the interface, the user has quick access to key information, enabling effective monitoring of measurements.

ALARM SETTINGS INTERFACE

The alarm system allows for individual adjustment of warning parameters for each monitored gas.

Full customization – the ability to set threshold values for different substances.

Three alarm modes – the user can choose one or combine several signaling methods:

• Light alarm – flashing LED indicating danger,
• Audible alarm – warning signal emitted by the device,
• Vibration alarm – silent form of notification, ideal for working in a noisy environment.

  Flexible configuration – alarm modes can be activated and combined according to individual needs.

Thanks to the intuitive interface, setting alarms is quick and convenient, ensuring effective control over safety.

SETTINGS INTERFACE

The settings menu offers six key options that allow you to customize the operation of the device to individual user preferences:

• Language selection (language) – the ability to change the interface language, facilitating operation.

• Date and time settings (date & time) – precise configuration of time for correct measurement registration.

• Automatic data saving (auto save) – an option that allows recording measurement results without the need for manual confirmation.

• Automatic shutdown (auto off) – energy saving by turning off the device after a period of inactivity.

• Screen backlight adjustment (light) – adjusting the brightness of the display for better visibility in different conditions.

• Restore factory settings (reset default) – resetting all settings to default values.

With the clear layout of the interface, the user can quickly and intuitively adjust the device to their needs.

SAVED MEASUREMENTS INTERFACE

The archiving menu allows for full control over saved measurement results, offering a range of functions that facilitate browsing and managing data:

• Detailed preview of results – the ability to analyze saved measurements in detail.

• Deleting individual records – selective deletion of selected data.

• Deleting a larger range of measurements – quickly freeing up the device's memory.

• Selecting a page with saved data – quick navigation through measurement history.

• Preview of a specific record – easy access to detailed information regarding a specific measurement.

• Loading selected records – re-analyzing results without the need to perform a new measurement.

With the clear interface, the user can effectively manage collected data, allowing for better organization of work and monitoring of results over a longer period.

Summary:

The WINTACT WT8811 meter is a reliable and versatile tool for monitoring air composition. With advanced measurement technology and solid construction, it provides high precision and safety of use in various environments.

Main advantages of the device:

✔ Wide measurement range for key gases,

✔ Three forms of alarms – audible, visual, vibration,

✔ Ability to save 120,000 measurement results,

✔ Color, clear LCD display,

✔ Sturdy, damage-resistant casing,

✔ Long battery life.

With these features, the WINTACT WT8811 is an essential tool in air quality control and ensuring safety in places at risk of toxic or flammable gases.

Wintact is a manufacturer of high-quality control and measurement instruments, such as pyrometers, anemometers, lux meters, vibrometers, thickness gauges, thermo-hygrometers, etc.

The company's manufacturing facility has implemented a rigorous and comprehensive quality control system. Additionally, all products undergo thorough inspection before shipment. As a result, Wintact instruments are highly sought after in the market and have gained a reputation as reliable, high-quality products at an affordable price.