This portable single-gas detector draws a sample through an internal micro pump and monitors one selected gas. Fourteen sensor choices include HCN, HCl, NO and SO2. Select the gas first, then compare its range and sensor-specific response with the sampling setup required for the task.
Choose the Configuration for Your Measurement
- Pump format: Internal micro pump with ten selectable suction levels.
- Interface: Color LCD, triple alarm modes and magnetic charging are described in the current product data.
- One gas per order: The selector chooses one sensor configuration. Fourteen options do not establish fourteen simultaneous measurements.
Order Options
| Select an option | SKU |
|---|---|
| Combustible Gas (LEL) | GAS-Q7M4-01 |
| Oxygen (O2) | GAS-Q7M4-02 |
| Carbon Monoxide (CO) | GAS-Q7M4-03 |
| Hydrogen Sulfide (H2S) | GAS-Q7M4-04 |
| Sulfur Dioxide (SO2) | GAS-Q7M4-05 |
| Nitric Oxide (NO) | GAS-Q7M4-06 |
| Nitrogen Dioxide (NO2) | GAS-Q7M4-07 |
| Chlorine (Cl2) | GAS-Q7M4-08 |
| Ammonia (NH3) | GAS-Q7M4-09 |
| Hydrogen (H2) | GAS-Q7M4-10 |
| Hydrogen Cyanide (HCN) | GAS-Q7M4-11 |
| Hydrogen Chloride (HCl) | GAS-Q7M4-12 |
| Phosphine (PH3) | GAS-Q7M4-13 |
| Ozone (O3) | GAS-Q7M4-14 |
Open an option to review its current price and purchase controls. Each option is a separate order configuration; use the selected product and SKU when confirming the supplied package.
Product Details and Specifications
The portable pump gas detector monitors one selected gas and draws samples through a built-in micro pump. Its active sampling method supports field and facility checks where the atmosphere must be drawn to the sensor rather than relying only on natural diffusion.
Pump Sampling, Display & Alarms
- Built-in micro sampling pump with 10 selectable suction levels
- Configured with one selected gas sensor per instrument
- Color LCD shows gas type, concentration, unit, time, alarm status, and battery level
- Chinese and English interface options
- Audible, visual, and vibration alarms with sound pressure above 90 dB
- Top flashlight, large back clip, and magnetic charging connection
Technical Specifications
| Detection format | One selected gas sensor per instrument |
|---|---|
| Sampling method | Internal micro pump with 10 suction levels |
| Linear accuracy | <±5% F.S. |
| General response time | <10 s |
| Alarm modes | Audible, visual, and vibration |
| Alarm sound pressure | >90 dB |
| Display | Color LCD |
| Interface languages | Chinese and English |
| Power | 3.7 V rechargeable lithium-ion battery |
| Standby time | At least 30 days |
| Use time | At least 24 hours |
| Operating temperature | -35 to 65 °C |
| Operating humidity | 5-95% RH, non-condensing |
| Dimensions | 210 x 73 x 50 mm |
| Approximate weight | 0.4 kg |
| Housing / ingress protection | ABS / IP66 |
| Explosion protection | Ex ib IIC T4 Gb |
Gas Options, Ranges & Sensor Response
The instrument's general response specification is less than 10 seconds. Sensor-specific maximum response figures vary by gas configuration and are listed below.
| Gas | Range | Minimum Reading | Maximum Sensor Response |
|---|---|---|---|
| Combustible Gas (LEL) | 0-100% LEL | 1% LEL | ≤15 s |
| Oxygen (O2) | 0-30% vol | 0.1% vol | ≤20 s |
| Carbon Monoxide (CO) | 0-1000 ppm | 1 ppm | ≤25 s |
| Hydrogen Sulfide (H2S) | 0-100 ppm | 1 ppm | ≤30 s |
| Sulfur Dioxide (SO2) | 0-100 ppm | 0.1 ppm | ≤30 s |
| Nitric Oxide (NO) | 0-250 ppm | 1 ppm | ≤60 s |
| Nitrogen Dioxide (NO2) | 0-20 ppm | 0.1 ppm | ≤25 s |
| Chlorine (Cl2) | 0-20 ppm | 0.1 ppm | ≤30 s |
| Ammonia (NH3) | 0-100 ppm | 1 ppm | ≤50 s |
| Hydrogen (H2) | 0-1000 ppm | 1 ppm | ≤60 s |
| Hydrogen Cyanide (HCN) | 0-50 ppm | 0.1 ppm | ≤200 s |
| Hydrogen Chloride (HCl) | 0-30 ppm | 0.1 ppm | ≤60 s |
| Phosphine (PH3) | 0-1000 ppm | 0.1/1 ppm | ≤25 s |
| Ozone (O3) | 0-20 ppm | 0.1 ppm | ≤50 s |
Package Contents
- Gas detector
- Charging plug
- Magnetic charging cable
- User manual
- Certificate of conformity
- Factory test report
- Carrying case
Selection & Use Notes
Select the gas type and range for the intended monitoring task. Alarm settings, calibration, bump testing, sampling setup, and operating checks should follow the configured sensor documentation and the workplace safety procedure.
Compare the Relevant Alternative
The OLED single-gas product is the diffusion alternative and provides its own gas-specific rows. Use those rows to compare the chosen gas, not a general family figure. An internal pump changes how the sample reaches the sensor; it does not add the other thirteen gas channels.
View the comparison model and its options.
Questions Before Ordering
Does the pump reduce every gas's response to the general headline figure?
Use the selected gas's response row and the sampling setup. The product also gives sensor-specific figures, so the general headline cannot be applied to every configuration.
Are sampling tubes and accessories automatically included?
An internal-pump specification does not establish the full accessory package. Confirm the tubing, filters, connection and supplied items required by the task before ordering.
Selection and Use Guides
- Pumped vs diffusion gas detectors
- Sampling hoses and response time
- Browse gas detectors by gas and measurement task
Selection note: Follow the supplied instrument instructions and the applicable site procedure. This product comparison does not replace a site-specific risk assessment.
Free Shipping
Free shipping is available on all orders. Shipping methods and carriers may vary depending on the destination, order details, and available logistics options. Full Shipping Policy
Returns Policy
For returns and refunds, please review our full Refund Policy before placing an order. If you need help with an order, contact us before your order has shipped whenever possible. Full Returns Policy
When Will My Order Ship?
For Standard Shipping, we aim to pack and ship out your order within 4 business days. During special periods, such as heavy order processing or local inventory shortages that require deployment, please expect it to take an additional day or two for processing. We ship five days a week, Monday through Friday.
You will receive a shipment confirmation with tracking information via email when your order has shipped. Once you receive this email, we cannot change or cancel your order.
Can I Change The Shipping Address On My Order?
Please contact us immediately via email if you realize that you gave us the wrong shipping address — if it hasn't shipped yet, we might be able to correct it before it goes out the door.If your order ships to the address provided and is returned to us as undeliverable, then you are responsible for paying the cost of shipping again to resend it to you. If you decide you do not want your order reshipped, we'll refund you for the products less the original shipping charges, once your order returns to our warehouse. We'll reach out to you to coordinate your options before re-shipping.
If your order ships to an incorrect address provided at the time the order is placed and is not retrievable, we are not responsible and cannot offer reimbursement.
Unable to find satisfactory answers ? more FAQs
Let customers speak for us
My first impression after opening and installing batteries was that this meter is very well built considering the price and manufacturer. I had read some reviews stating that it's amp measurements were not accurate below 5 amps, I haven't seen any issues in any measurements I've taken, even side by side with my fluke meters. I've successfully taken accurate amp, voltage and continuity measurements with this ETCR6920B, the display is nice and legible. I haven't tried storing data and making transfers to a PC yet, the soft case is good enough for storage on a shelf and the test leads are of good quality and rated for 1000v. There's nothing bad to say about this meter especially when you consider the price, it's a really great meter.
Works as described.
