Personal 4-in-1 gas monitor with built in sample pump. Sampling method: internal sample pump, flow rate nominal 0.5 LPM, includes hydrophobic filter. Display: digital LCD with 7 segments, auto backlight during alarm. Alarm method: gas alarms: 1st and 2nd (user adjustable), STEL, TWA and OVER.
Trouble alarms: Sensor connection, low battery, low flow, circuit trouble and calibration error. Operating temp. & humidity: -20° C ~ + 50°C , 0 to 85% RH, non-condensing. Response time: within 30 seconds (T90). Continuous operation: alkaline battery: 14 hours; Ni-MH battery: 16 hours (fully charged). Dimensions and weight: 5.6 x 2.5 x 1.5 inches, approx. 310 g (11 ounces).