Universal 44XR Sample Pump Starter Kit

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Part Number: 224-44XR-S

Universal 44XR Sample Pump Starter Kit Overview

Universal 44XR (economy) Pump Starter Kit, with NiMH battery and screwdriver set, 100-240 V charger, Tygon tubing (3 feet, 1/4-inch ID), and collar clip with cable tie
Flow range: Constant flow 5 to 5000 ml/min
Low flows from 5 to 500 ml/min require adjustable tube holder.
UL approved for intrinsic safety

The Universal 44XR personal or area air sampling pump provides a flow range of 5 to 5000 ml/min. This economical turn-on-and-sample air sampling pump offers run times up to 12 hours for sampling particulates and gases/vapors. The pump is ideal for use with sorbent tubes, filter cassettes, size-selective samplers, sample bags, and impingers.
The Universal 44XR air sampling pump is UL Listed for intrinsic safety.


Performance Profile

Operating Range

1000 to 5000 ml/min (UL Listed model)
1000 to 3000 ml/min (MSHA-approved model)
(5 to 500 ml/min requires the Cat. No.224-26 Series adjustable tube holder)
Requires 1/4-inch ID tubing

34 oz (964 gm)
5.1 x 4.7 x 1.9 in (13 x 11.9 x 4.8 cm)
Compensation Range
1000 to 2500 ml/min at 40 inches water back pressure
3000 ml/min at 35 inches water back pressure
4000 ml/min at 20 inches water back pressure
5000 ml/min at 10 inches water back pressure
Typical Back Pressure
See Table 1 below.
Flow Control
Holds constant flow to ± 5% of set-point
Run Time
NiMH Battery: 12 hours minimum at 4000 ml/min and 20 inches water back pressure; dependent on media used. See Table 2.
Battery Eliminator: Pump provides extended runs.
Tubing 1/4-inch ID tubing, required
Flow Indicator
Built-in rotameter with 250-ml division; scale marked at 1, 2, 3, 4, and 5 L/min
Power Supply
6.0-V plug-in NiMH battery pack, rechargeable, 3.5-Ah capacity
A battery eliminator is available (see Ordering Information); use voids the UL Listing for intrinsic safety.
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
ATEX-approved models are available. Contact SKC.
Operating Temperature
32 to 104 F (0 to 40 C)
Storage Temperature
-4 to 113 F (-20 to 45 C)
Charging Temperature
50 to 113 F (10 to 45 C)
Operating Humidity
0 to 95% non-condensing
Multiple-tube Sampling
Built-in constant pressure regulator allows user to take up to four simultaneous samples with rates up to 500 ml/min each (total combined flow 1350 ml/min maximum) using the optional adjustable tube holder accessory.
RFI/EMI Shielding
Complies with requirements of EN 55022, FCC Part 15 Class B, EN 50082-1
Frequency range of the radiated susceptibility test was 27 to 1000 MHz
CE marked
Additional Specifications
Built-in fluid/particulate trap
External see-through filter housing
Tamper-resistant control cover
Tamper-resistant compensation adjustments
Built-in accessory mount
Stainless steel belt clip
External exhaust port
All non-plastic parts made of corrosion-resistant materials
RFI and EMI-shielded case
Additional Features
One-year warranty
Ultra-quiet operation
Pulsation-free flow
Impact-resistant case

Protect sample pump from weather when in use outdoors.

  • Pump Flow Rate : 5 to 5000 ml/min
  • PC Compatible : No
  • Programable : No
  • Intrinsic Safety : Yes
  • Battery Type (Power) : NiMH
  • Approx Run Time : 12

Table 1.
Typical Back Pressure of Sampling Media (inches water)
Compare the information in this back pressure table to pump compensation range to determine appropriate applications.

  Filter/Pore Size (µm) Flow Rate (L/min)
1 1.5 2 2.5 3
25-mm MCE/0.8 6 9 12 15 18
25-mm MCE/0.45 14 22 28 35 40
37-mm MCE/0.8 2 3 4 5 6
37-mm PVC/5.0 1 1 2 2 2.5

Table 2.
Pump Run Time in Hours with NiMH Battery
Following are typical run times achieved when using a fully charged nickel-metal hydride (NiMH) battery pack. Data is sorted by type of sample media. All run times are listed in hours. Results are obtained using a new fully charged battery. Pump performance may vary.

Mixed Cellulose (MCE) filter, 0.8-µm pore size

Flow Rate (L/min) Filter Diameter     
37 mm 25 mm
2 37 33
2.5 34 26
3 31 21
3.5 29 18
4 25 15
4.5 20 14

Polyvinyl Chloride (PVC) filter, 5.0-µm pore size

Flow Rate (L/min) Filter Diameter     
37 mm 25 mm
2 47 41
2.5 38 33
3 35 30
3.5 26 27
4 22 25
4.5 21 23
NOTE: Increases in back pressure during sampling due to buildup of sample on the filter can decrease battery life.

Simple to Operate

With its broad flow range, the powerful 44XR air sampling pump does the work of both a high flow and a low flow pump in a single pump unit. Designed for rugged environments and repeated use, its state-of-the-art pneumatic system delivers a constant flow, so users can get accurate air volumes without the need for frequent sampler adjustments. This system includes:

  • Pulsation dampener for smooth airflow
  • Built-in flowmeter to monitor pump flow
  • Pressure regulator for low flow sampling
  • Filter assembly to prevent clogging of the pump

All SKC XR Series Universal Air Sampling Pumps are equipped with a stainless steel belt clip, built-in accessory mount for impinger brackets, anti-tamper control cover, and external exhaust port for bag sampling applications. For easy repair, replacement parts are available in preassembled modules.

Personal or Area Sampling

The result of extensive research and development, the PCXR4 is a constant flow air sampling pump suited for a broad range of applications. With an operating range of 1000 to 5000 ml/min (low flow applications of 5 to 500 ml/min require an optional adjustable tube holder), this battery-operated air sampling pump is ideal for industrial hygiene studies as well as environmental testing. Specifically designed for on-worker and fenceline applications, the PCXR4 air sampling pump is typically used with collecting devices such as:

  • Sorbent sample tubes and long-duration detector tubes for collecting most hazardous chemical gases and vapors from the air
  • Cyclones for collecting respirable dust
  • IOM samplers for collecting inhalable dust
  • Filters for collecting total dust, asbestos, or chemical hazards
  • Tedlar sample bags for collecting airborne chemical hazards
  • Impingers for collecting reactive chemicals into liquids

The 44XR air sampling pump is so dependable, we guarantee its performance for a period of one year from date of purchase.

Back Pressure Compensation

The 44XR is factory-preset to compensate for back pressures to 40 inches water over the most commonly used flow ranges. As back pressure increases, the motor voltage automatically corrects to maintain a constant flow over the operating range. There is no sacrifice to air volume accuracy, even in dusty environments.

Lightweight and Durable

Weighing only 34 ounces, the 44XR is suited ideally to personal sampling. A tamper-resistant cover and durable construction allow the pump to withstand the rigors of on-worker use time and time again. Rechargeable batteries provide a reliable power source that can be restored overnight. The 44XR is a workhorse air sampling pump, designed for rugged, repeated use.

RFI and EMI Shielding

44XR case material and unique circuitry are designed to provide shielding from radio frequency in the range of 27 to 1000 MHz. This shielding prevents fluctuations in the flow caused by electrical effects on the pump's control circuitry. CE marked

A High Standard of Safety

Intrinsically safe, the 44XR is UL Listed for explosive gas and dust atmospheres of 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. ATEX-approved model is available. Contact SKC.

The Indispensable Air Sampling Pump

Highly accurate yet easy to operate, the versatile 44XR is suited for industrial hygiene studies as well as environmental testing. Specifically designed for on-worker or personal applications, this sampler is typically used for TWA, STEL, or Ceiling sampling using a wide range of sampling media including:

  • Sorbent Sample Tubes
  • Sample bags
  • Impingers
  • Filters
  • Cyclones

Multiple-tube Sampling Capability

The 44XR built-in constant pressure regulator allows users to take up to four simultaneous samples with rates up to 500 ml/min each using an optional adjustable tube holder (not included). Reduce time in the field and use fewer pumps with multiple-tube air sampling.

Long-life NiMH Battery Pack

The NiMH battery pack provides a minimum 12-hour continuous run time. The battery charge test ensures the pump runs the entire shift.

A Variety of Ordering Options

The 44XR and its accessories can be purchased together in single and five-pack pump kits or separately for a more customized setup. Accessories include chargers (single or five station), adjustable tube holders, filter cassette holders, impinger holders, and a protective nylon carrying pouch with shoulder strap and belt. Note: Kits do not contain all the accessories listed here. Contact your SKC regional sales representative for complete ordering information.

All SKC Universal Air Sampling Pumps are available with European approvals. Contact the SKC International Sales Department at 724-941-9701 or e-mail at skcorder@skcinc.com for ordering information.