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Dwyer Instruments
Dwyer AQH-20 Indoor Air Quality Meter
Quote on request
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AQH-20: CO2 0–2000 ppm; T/RH; ±30 ppm ±5%; min/max/avg; 4×AA. RFQ.
Download datasheet PDF
RFQ cart holds BOM lines only. Submit for engineering quote.
Key parameters
Measuring range
CO2 0–2000 ppm; Temperature 14 to 140 °F (−10 to 60 °C); Humidity 0.0–99.9 %RH
Accuracy
Per AQH-20 datasheet (NDIR CO2 + temp/RH sensors; see OEM PDF for class accuracy)
Output
N/A (handheld meter with LCD; min/max/avg; configurable alarms)
Supply
4× AA alkaline batteries
Protection
Handheld IAQ meter (indoor use)
Ambient temperature
Operating per AQH-20 datasheet; warm-up ~30 s
Fits contractor IAQ walkthroughs where you need a Dwyer AQH-20—handheld meter measuring CO2 0–2000 ppm (NDIR, ±30 ppm ±5% of reading), temperature 14–140 °F (±0.9 °F), and RH 0–99.9% (±3% from 10–90%), with min/max/avg, hold, dew point/wet bulb, and an audible alert.
Key advantages
- CO2 — 0–2000 ppm NDIR; ±30 ppm ±5% of reading
- Temp — 14–140 °F (−10–60 °C); ±0.9 °F
- RH — 0–99.9%; ±3% (10–90%)
- Functions — Min/max/avg; hold; dew point / wet bulb
- Power — 4× AA; 30 s warm-up
Typical applications
- HVAC IAQ surveys.
- Classroom CO2 checks.
- Commissioning comfort walks.
Selection guide
- Handheld vs desktop
- Carry case
- Calibration salts accessory
Common mistakes
- Breathing into sensor.
- Ignoring warm-up.
- Expecting >2000 ppm CO2.
When to RFQ / what to tell us
- Accessories.
- Quantity, ship-to.
Request a Quote · Get selection help
Specs
| Spec | Value |
|---|---|
| SKU | 41228 |
| Brand | Dwyer Instruments |
| Model | AQH-20 |
| Product type | IAQ Meter |
| Type | Handheld IAQ meter CO2 / temp / RH (AQH-20) |
| CO2 | 0–2000 ppm NDIR; ±30 ppm ±5% of reading |
| Temp RH | 14–140 °F (−10–60 °C) ±0.9 °F; RH 0–99.9% ±3% (10–90%) |
| Features | Min/max/avg; hold; dew point / wet bulb; audible alert |
| Power | 4× AA; warm-up 30 s |
Documents
FAQ
Q: CO2 range? A: 0 to 2000 ppm.
Q: Accuracy CO2? A: ±30 ppm ±5% of reading.
Q: What should I send for a quote? A: Quantity, ship-to.
Links
| Parameter | Value |
|---|---|
| Measuring range | CO2 0–2000 ppm; Temperature 14 to 140 °F (−10 to 60 °C); Humidity 0.0–99.9 %RH |
| Accuracy | Per AQH-20 datasheet (NDIR CO2 + temp/RH sensors; see OEM PDF for class accuracy) |
| Output | N/A (handheld meter with LCD; min/max/avg; configurable alarms) |
| Supply | 4× AA alkaline batteries |
| Protection | Handheld IAQ meter (indoor use) |
| Ambient temperature | Operating per AQH-20 datasheet; warm-up ~30 s |
| Display | Backlit LCD |
| Approvals | CE |
| Mounting | Handheld |
| Sensor type | NDIR CO2 + temperature + relative humidity |
| Notes | Dwyer Model AQH-20 handheld IAQ meter. Specs from assets.dwyeromega.com AQH-20 datasheet + intl.dwyer-inst.com product page. |
| Response Time | CO2 response under 30 s (literature) |