Constant flow air sample pump with wide flow range
Accurate air volumes without the need for frequent sample pump adjustments, smooth air flow for high flow (750 to 5000 ml/min), pulseless for low flow (5 to 500 ml/min). Low flow air sampling applications require the optional Adjustable Low Flow Holder (Cat. No. 224-26 series)
Automatic fault features
Ensure integrity of results with shutdown on low battery, restricted flow, and excess back pressure; all with time-retention
Back pressure compensation to 40 inches of water
Automatically corrects to maintain a constant flow
Built-in low flow pressure regulator at no extra cost
For low flow air sampling at 5 to 500 ml/min (requires the 224-26 series Adjustable Low Flow Holder accessory)
Multi-tube low flow air sampling capability
Built-in pressure regulator allows up to 4 tubes to be run simultaneously; reduces time in the field; uses fewer pumps
Small and compact air sampling pump
Measures only 5.1 x 4.7 x 1.9 inches (13 x 11.9 x 4.8 cm) and weighs 34 oz (964 gm)
Built-in rotameter and particulate trap
Provides a visible check of pump flow rate during air sampling; the filter assembly with see-through housing and trap protects the pump from debris and reduces maintenance requirements
Long-life NiCad battery
Provides a minimum of 8 hours of continuous use per charge; battery charge test ensures pump lasts entire shift
Large easy-to-read LCD
Displays battery status, total sample time, delayed start, sample period, sample over, program setup, hold, and fault
Easy keyboard programming and control
Convenient program setup and display read out; interrupt/hold button permits shutdown for breaks, lunch, or to recheck the air sample pump; programmable for delayed start time, intermittent sampling, extended sampling up to 7 days, timed shutdown, and repeatability
Ultra-quiet operation
Designed for on worker applications; quiet enough for indoor air quality investigations
Heavy-duty RFI/EMI-shielded case
Protects from interference from 27 through 1000 MHz