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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
  • impact-resistant
  • CE-approved

Intrinsically safe, UL listed

  • Class I groups A, B, C, D;
  • Class II Groups E, F, G;
  • Class III;
  • Temperature Code T3C.

Technical Specifications

Flow Range 1000 to 5000 ml/min (UL Listed model)\n(5 to 500 ml/min requires the 224-26 Series adjustable low flow holder)\nRequires 1/4-inch ID tubing
Compensation Range 1000 to 2500 ml/min at 40 inches water back pressure\n3000 ml/min at 35 inches water back pressure\n4000 ml/min at 20 inches water back pressu
Flow Control Holds constant flow to ± 5% of set-point
Run Time NiCad Battery: 8 hrs minimum at 4000 ml/min and 20 inches water back pressure; dependent on media used. \n\nNiMH Battery: 12 hrs minimum at 40
Tubing Requires 1/4-inch ID tubing
Timer Display Range 1 to 9999 minutes (6.8 days). Pump will shut off at 9999 minutes. To reset, restart the pump.
Flow Indicator Built-in rotameter with 250-ml division; scale marked at 1, 2, 3, 4, and 5 L/min
Intrinsic Safety UL Listed for Class I, Division 1 and 2, Groups A, B, C, D; Class II, Division 1 and 2, Groups E, F, G; and Class III, Temperature Code T3C
Operating Temperature 32 to 113 F (0 to 45 C)
Operating Humidity 0 to 95% non-condensing
Flow Fault If the pump is unable to compensate for longer than 15 seconds due to excessive back pressure, the pump enters flow fault. During flow faul