Overview
Enviro Test Construct negative oxygen ion detector is equipped with a color touch screen to display the concentration of negative oxygen ions in the air in real time. Sensors such as temperature and humidity, formaldehyde, PM, and TVOC can be selected at the same time, and data storage and U disk export functions can be selected at the same time. The equipment adopts standard MODBUS-RTU communication protocol, RS485 signal output, and the maximum communication distance can reach 2000 meters (measured).
Features
- Color screen display, beautiful and generous
- Using high-precision negative oxygen ion measurement unit, long-term stability, small drift
- Using dedicated 485 circuit, standard Modbus-RTU communication protocol, communication address and baud rate can be set
- Built-in battery, can be externally supplied with 18 V DC to 30 V DC wide voltage range
- Optional storage function and export by plug in U disk
- Optional formaldehyde sensor, PM 2.5 / 10 sensor, 1 temperature and humidity sensor, TVOC sensor
- Touch screen setting, easy to operate
Technical Specifications
| Negative Oxygen Ion Parameters | |
| Measuring Range | 0 million pcs / cm3 to 5 million pcs / cm3 |
| Minimum Resolution | 10 pcs per cm3 |
| Measurement Error | ± 15 % |
| Data Update Frequency | 1 Hz |
| Ion Mobility | 0.4 cm2 per (V x S) |
| Ion Mobility Error | ± 5 % |
| Humidity | |
| Measuring Range | 0 % RH to 100 % RH |
| Accuracy | ± 3 % RH (60 % RH, 77 °F (25 ℃)) |
| Resolution | ≤ 1 % RH per y |
| Pm10/Pm2.5 | |
| Measuring Range | 0 ug per m3 to 1000 ug per m3 |
| Accuracy | ± 3 % FS (100 ug per m3, 77 °F (25 ℃)) |
| Resolution | 1 ug per m3 |
| CH₂O | |
| Measuring Range | 0 ppm to 2 ppm |
| Accuracy | ± 0.025 ppm or ± 20 % FS |
| Resolution | 0.001 ppm |
| TVOC | |
| Measuring Range | 0 ppb to 60000 ppb |
| Accuracy | 15 % FS (C2H 6O ,0.5 ppm, 77 °F (25 ℃) ,50 % RH) |
| Resolution | 1 ppb |
| Power Supply | DC 18 V to 30 V |
| Temperature | |
| Measuring Range | -40 °F to 140 °F (-40 ℃ to 60 ℃) |
| Accuracy | 76.1 °F to 77.9 °F (- 0.5 ℃ to + 0.5 ℃), 77 °F (25 ℃) |
| Resolution | 76.82 °F to 77.18 °F (≤ 0.1 ℃) per y |
| Battery Capacity | 4000 mAh |
| Working Environment | -4 °F to 122 °F (-20 ℃ to 50 ℃) ＜ 95 % RH no condensation |
| Charging Time | ≤ 4 h |
| Power Supply | 18 V DC to 30 V DC |
| Usage | Indoor |
| Display | LED Screen |
