The portable MH-1200H-S-NO2 measures nitrogen dioxide (NO2) in surrounding air during inspection rounds. Its electrochemical sensor uses diffusion sampling, while a rear clip and protective cover help keep the instrument accessible between readings. Select the NO2 measurement span that fits the concentration range required for your procedure.
Range and Sampling Choices
The available configurations cover 0-20, 0-50 and 0-100 ppm. Each is a separate range option for the same instrument model. In its standard diffusion setup, ambient air reaches the sensor opening directly.
Readings and Alarms
A 128 x 64 monochrome LCD shows the gas reading and supports ppm and mg/m³ display units. Backlight timing is adjustable, with automatic illumination during an alarm. Sound, light and vibration alerts draw attention to an alarm condition, and the sound alarm is rated at 85 dB. Set points can be configured for the monitoring procedure. The instrument retains 100 alarm records that can be reviewed on its display, and zero and self-calibration functions are available for routine setup.
Technical Specifications
| Model | MH-1200H-S-NO2 |
|---|---|
| Measured gas | Nitrogen dioxide (NO2) |
| Sensor principle | Electrochemical |
| Sampling method | Diffusion |
| Range options | 0-20, 0-50 and 0-100 ppm |
| Display | 128 x 64 monochrome LCD |
| Display units | ppm and mg/m³ |
| Alarm modes | Sound, light and vibration |
| Audible alarm | 85 dB |
| Alarm history | 100 records viewable on the instrument |
| Backlight | Adjustable timing and automatic alarm activation |
| Battery | 2300 mAh rechargeable lithium-polymer |
| Operating temperature | -20 to 50 Degree C |
| Ingress protection | IP65 |
| Dimensions | 131 x 83 x 35 mm |
| Approximate unit weight | 240 g with protective cover |
Configuration Notes
This configuration measures NO2 specifically; an NO detector or combined NOx detector serves a different measurement request. Choose range and alarm settings according to the intended monitoring procedure, and use the supplied instructions for calibration and checking. For diffusion measurement, leave the sensor inlet exposed to the air being monitored. The product photos show the common housing of this series, and their demonstration screen may show other gases.
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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.
