Unit A25D PM2.5 Air Quality Meter with Temperature and Humidity Display
- Brand: Unit
- SKU: A25D
- MPN: A25D
- Price: 3426.13 TRY + VAT · incl. VAT 4111.36 TRY
- Availability: Made to order
- Air Quality Meters
- Selection guide: Measuring Instruments Selection Guide
Unit A25D is a desktop air quality meter of the UNI-T A25 series that works on the laser scattering principle and measures temperature and humidity in addition to PM2.5 concentration; it uses a pre-calibrated sensor. The PM2.5 measuring range is 0–500 µg/m³ (1 µg/m³ resolution) with an accuracy of ±(10 µg/m³+10 digits) from 0 to 100 µg/m³, ±(10%+30 digits) from 101 to 400 µg/m³ and ±(10%+50 digits) from 401 to 500 µg/m³. Temperature is specified at ±1 °C (±1.8 °F) over -10–50 °C with 0.1 °C resolution, and relative humidity over 0–99% RH at ±5% RH within 30%–80% RH and ±8% RH outside it. The concentration is shown with a six-level emoticon, and the red backlight turns on above 115 µg/m³ PM2.5. It has an LCD backlight, automatic baseline correction, a battery status indicator and auto power off. Its 1500 mAh rechargeable battery charges in about 3 hours via micro USB; the dimensions are 75 mm × 55 mm × 130 mm and the weight is 230 g. The A25 series is used for monitoring PM2.5 in homes, offices, hotels, schools, factories, hospitals, restaurants and other public places.
| Temperature Measurement | -10–50 °C · ±1 °C (±1.8 °F); çözünürlük 0.1 °C; °C/°F gösterimi |
|---|---|
| Humidity Measurement | 0–99% RH (çözünürlük 1% RH) · ±5% RH (30%–80% RH); ±8% RH (<30% RH ve >80% RH) |
| Sensor | Önceden kalibre edilmiş PM2.5 sensörü |
| Automatic Baseline Correction (ABC) | Available |
| PM2.5 Measurement | 0–500 µg/m³ (çözünürlük 1 µg/m³) · 0–100 µg/m³: ±(10 µg/m³+10 hane); 101–400 µg/m³: ±(10%+30 hane); 401–500 µg/m³: ±(10%+50 hane) |
| Additional Functions | Görsel alarm (PM2.5 115 µg/m³ üzerinde kırmızı arka ışık yanar), konsantrasyon derecelendirme ifade simgeleri (6 seviye: 0–35 / 36–75 / 76–115 / 116–150 / 151–250 / 251–500 µg/m³), düşük pil göstergesi, °C/°F seçimi |
| Auto Power Off | Available |
| Operating Temperature | -10–50 °C; 0–99% RH (iç/dış mekân veya araç içi) |
| Storage Temperature | -20–60 °C |
| Power Source | 1500 mAh şarj edilebilir pil; micro USB ile şarj (5 V / 1 A) |
| Display Size | 42 mm × 65 mm |
| Product Dimensions | 75 mm × 55 mm × 130 mm |
| Gram | 230 g |
| Standard Accessories | 1 m mikro USB kablosu, İngilizce kılavuz |
| Charging Time | Yaklaşık 3 saat (şarj sırasında kullanılabilir) |
| Certifications | CE, UKCA |
| Color | White ve gri |
| Measuring Method | Lazer saçılımı |
| Accuracy Environment | Ortam sıcaklığı 18–28 °C; ortam nemi 40–75% RH (nem doğruluğu için sıcaklık 18–28 °C) |
| Backlight | Çift renkli LED arka ışık (beyaz/kırmızı); LCD arka ışık tuşla açılıp kapanır |
| Operating Altitude | ≤2000 m |