Select a MH2000-NO2 nitrogen dioxide detector configured for flue-gas measurement. This portable, single-gas instrument uses an electrochemical sensor and an internal sampling pump, with four order options: 0-500, 0-1000, 0-2000 or 0-5000 ppm. One detector is supplied with the High Performance sensor configuration and measuring span selected when ordering.
Four Flue-Gas Measuring Ranges
Choose the span that covers the nitrogen dioxide concentration required by the measurement procedure. The detector does not automatically switch between all four versions. Its measured gas is NO2; the configuration does not establish measurement of nitric oxide, NO, or total nitrogen oxides.
This product uses the flue-gas-specific sensor configuration. The ambient Low Range NO2 version serves low-concentration ambient-air measurements. Matching the gas, application and measuring span helps identify the correct instrument before selecting a sampling package.
Plan the Sampling Package
The pump delivers up to 1 L/min flow and has ten adjustment settings. Sampling probes, filters and drying accessories are separate choices for the intended arrangement. The detector's operating temperature is -20°C to 50°C. This value describes the instrument environment and is not a temperature rating for a probe placed in a hot flue.
The housing measures 205 x 75 x 32 mm and weighs 300 g. A rechargeable lithium-polymer battery powers the instrument. Data logging and USB export are optional and excluded from this base configuration. Select the recording option before ordering if stored measurements are required.
Specifications
| Item | Specification |
|---|---|
| Model | MH2000-NO2 |
| Detected gas | Nitrogen dioxide (NO2) |
| Configuration | High Performance, flue-gas-specific, single-gas |
| Measuring range options | 0-500, 0-1000, 0-2000 or 0-5000 ppm |
| Sampling package | Application-specific probe, filter and drying accessories are separate choices |
| Sensor principle | Electrochemical |
| Sampling method | Internal sampling pump |
| Pump flow | Up to 1 L/min |
| Pump adjustment | 10 settings |
| Display | LCD dot matrix; gas type, concentration, unit, battery level and time |
| Operating languages | English and Chinese |
| Concentration units | μmol/mol / ppm / mg/m³; 1 μmol/mol = 1 ppm |
| Alarm outputs | Sound, light and vibration |
| Alarm stages | Two |
| Alarm setpoints | User adjustable |
| Sound alarm | 85 dB |
| Alarm lights | Blue for low alarm; red for high alarm |
| Measurement compensation | Temperature and pressure compensation |
| Instrument controls | Self-check, zero calibration and factory reset |
| Battery | 3.6 V, 2300 mAh rechargeable lithium polymer |
| Charging time | 4-6 hours |
| Operating temperature | -20°C to 50°C |
| Operating humidity | 0-95% RH, non-condensing |
| Protection rating | IP65 |
| Dimensions | 205 x 75 x 32 mm |
| Instrument weight | 300 g |
| Data recording / PC export | Optional; excluded from this base configuration |
Display and Instrument Controls
The LCD dot-matrix display shows the gas type, concentration, unit, battery level and time. English and Chinese interfaces are available. Concentration units include μmol/mol, ppm and mg/m³. Two alarm stages have adjustable setpoints, with sound, light and vibration outputs.
Temperature and pressure compensation, self-check, zero calibration and factory-reset controls are provided. Follow the instrument instructions for the selected NO2 sensor and sampling arrangement. Gallery images show the shared pump-detector housing. A case photograph does not represent a two-instrument package or establish included sampling probes.
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.
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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.
