Overview
Enviro Test Construct ion counter tester 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, RS 485 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
- Using dedicated 485 circuit, standard Mod Bus-RTU communication protocol
- Built-in battery, can be externally supplied with 18 V to 30 V DC
- Optional storage function and export by plug in U disk
- Optional formaldehyde sensor, PM 2.5 /10 sensor
- Touch screen setting, easy to operate.
Technical Specifications
| Power supply | DC 18 V to 30 V | |
| Data storage | 65535 readings | |
| working environment | -4 °F to 122 °F (-20 ℃ to 50 ℃), <95% RH no condensation | |
| Charging time | ≤4 h | |
| Negative oxygen ion parameters | Measuring rangeMinimum resolution Measurement error Data update frequency Ion mobility Ion mobility error | 0 million pcs/cm^3 to 5 million pcs/cm310 pcs/cm3 ±15% 1 Hz 0.4 cm^2/ (V x S) ±5% |
| Temperature | Measuring rangeAccuracy Resolution | -40 °F to 140 °F (-40 ℃ to 60 ℃)± 32.9 °F (0.5 ℃), 77 °F (25 ℃) ≤32.18 °F (0.1 ℃)/ y |
| Humidity | Measuring rangeAccuracy Resolution | 0% RH to 100% RH±3% RH (60% RH, 77 °F (25 ℃)) ≤1% RH/y |
| PM10/PM2.5 | Measuring rangeAccuracy Resolution | 0 ug/m 3 to 1000 ug/m 3±3% FS (@100 ug/m 3, 77 °F (25 ℃)) 1 ug/m^3 |
| CH₂O | Measuring rangeAccuracy Resolution | 0 ppm to 2 ppm±0.025 ppm or ±20% FS 0.001 ppm |
| TVOC | Measuring rangeAccuracy Resolution | 0 ppb to 60000 ppb15% FS (0.5 ppm, 77 °F (25 ℃),50% RH) 1 ppb |
