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Measurement display: 4-digit LCD digital display with backlight Operating temperature: 0~40℃(32~104℉) Storage temperature: -10~50℃(14~122℉) Operating humidity: 15~80%RH (relative humidity) (non-condensing) Storage humidity: 15%~80% RH (relative humidity) (non-condensing) Concentration unit: ppm (volume concentration), mg/m³ (mass concentration) Measuring range: 0~4.00ppm (0~5.00mg/m³) (1ppm =1.25mg/m³ under one atmosphere) Resolution: 0.01ppm (0.01 mg/m³) Accuracy: ±10%×reading Pump sampling time: 30 seconds Sensor response time: <20 seconds Calibration gas: customized standard gas Over-range display: --OL-- Alarm mode: sound and light alarm (when the alarm value is exceeded, sound and red backlight will warn at the same time) Sensor principle: electrochemistry Sampling method: pump suction Power supply: 4×3.7 lithium iron phosphate battery Size: 235×74×40(mm) |
