Measure low sulfur dioxide concentrations in ambient air with the MH2000-SO2 Low Range detector. Choose a 0-1 ppm or 0-5 ppm version, both with 0.001 ppm resolution. This High Precision, single-gas SO2 configuration uses an electrochemical sensor and an internal sampling pump.
Two Ambient Measuring Spans
The 0-1 ppm option has a lower maximum measuring span, while the 0-5 ppm option covers a broader low-concentration interval. Match the ordered span to the concentration expected in the sample and the measurement procedure. Each order supplies one instrument configured for the selected version; it does not automatically cover both ranges.
Resolution describes the stated reading increment. The 0.001 ppm value does not establish a detection limit or numerical measurement accuracy. This ambient-air configuration serves low-concentration SO2 tasks. Select the separate flue-gas-specific or biogas-specific configuration when the application requires one of those sensor arrangements.
Display and Alarm Setup
The LCD dot-matrix display shows gas type, concentration, unit, battery level and time. English and Chinese operating interfaces are available. Concentration can be displayed in μmol/mol, ppm or mg/m³, with 1 μmol/mol equivalent to 1 ppm.
Two alarm stages allow the setpoints to be adjusted. Sound, light and vibration provide the outputs, including an 85 dB sound alarm and blue/red alarm lights. Self-check, zero calibration, factory reset, and temperature and pressure compensation are provided. Operate the controls according to the supplied instructions for the selected Low Range SO2 version.
Specifications
| Item | Specification |
|---|---|
| Model | MH2000-SO2 |
| Detected gas | Sulfur dioxide (SO2) |
| Configuration | High Precision, ambient-air, single-gas |
| Measuring range options | 0-1 or 0-5 ppm |
| Resolution | 0.001 ppm for both Ambient Low Range options |
| 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 |
Sampling and Recording Options
The internal pump provides up to 1 L/min flow and ten adjustment settings. The 300 g instrument uses a rechargeable lithium-polymer battery. Filters, drying accessories and sampling probes are separate choices for the intended sampling arrangement.
Data logging and PC export are optional and excluded from this base configuration. Gallery images illustrate the common housing and controls. The case view does not represent two supplied instruments, and a connected cable does not indicate included PC export.
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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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.
