SpecificationsOperating Flow ControlVolumetric flow rate held within +/- 2.5% of set-point over the 1 to 3 L/min operating range (+/- 5% to 0.5 LPM), with automatic compenstation for battery voltage, altitude, temperature, and sample load changes.Flow RateFlow rate adjustable between 0.5 and 3.0 L/min; lower flow rates attainable (to 1 mL/min) with the optional Gemini Twin-Port Sampling accessoryFlow IndicationLiquid crystal display (LCD) provides 0.01 L/min resolutionOperating Range30 inches of water load upt to 2 L/min and 10 inches up to 3 L/minFlow Blockage DetectionFlow-fault LED comes on immedieatly when block is detected. Pump shuts down within 90 seconds if block is not cleared.Elapsed Time ReadoutTo 999 minutes in increments of 1 minute. Holds the last reading after either flow blockage or low battery shutdown and when pump is OFF or in HOLD mode.Operating TimeVaries with flow rate and sample device loading.Operating Temperature Limits32-113 F (0-45 C)Physical Weight23 oz. (652 g) with battery packDimensions2.25 in. D x 4.25 in. H x 4.0 in. W (5.7 cm D x 10.8 cm H x 10.2 cm) with battery packPower Supply4.8 V battery pack of four NiMH cells (units mfg before October 2011 contain NiCd cells)Battery Pack Capacity2.8 amp hours (NiMH version); 2.4 amp hours (NiCD version)Battery Pack Recharge Time14-16 hours overnight with Omega Battery ChargerTypical Battery Pack Life300 or more charging cycles
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