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Operating Instructions
Universal Sample Pump
Catalog No. 224-44XRM
SKC Inc.
863 Valley View Road
Eighty Four, PA 15330
Form #37725 Rev 0901
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Description
The result of extensive research and development, the 44XRM is a constant fl ow air
sampler suited for a broad range of applications. It is ideal for industrial hygiene studies
as well as environmental testing.
Durable RFI-shielded Case
provides protection from radio
frequency interference
between 27 and 1000 MHz.
Rechargeable NiCad Battery
provides continuous 8-hour
operation on a single charge.
Low Flow Regulator
(beneath screw cap)
allows pump to be switched
from high to low fl ow.
Accessory Mounting Screws
allow sampling accessories
such as impinger holders
to be secured to pump.
Built-in Particulate Trap
in see-through housing
protects pump.
Built-in Rotameter
Tamper-resistant Cover
prevents changes to
settings.
Recessed Flow
Adjustment
adjusts fl ow rate between
1000 and 3000 ml/min.
On/Off
Switch
provides a visible check of
relative fl ow rate during
sampling.
44XRM Universal Sample Pump
Notice: This operating instruction may not address all safety concerns (if any) associated with this product and its use. The
user is responsible for determining and following the appropriate safety and health practices and regulatory limitations (if
any) before using the product. The information contained in this document should not be construed as legal advice, opinion,
or as a fi nal authority on legal or regulatory procedures.
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Performance Profi le
Operating Range ................... 1000 to 3000 ml/min
(5 to 500 ml/min requires adjustable low fl ow holder)
Weight .................................... 34 oz (964 gm)
Dimensions ...........................5.1 x 4.7 x 1.9 in (13 x 11.9 x 4.8 cm)
Compensation Range ........... 1000 ml/min at 40 inches water back pressure
2000 ml/min at 40 inches water back pressure
3000 ml/min at 22 inches water back pressure
Flow Control .......................... Holds constant fl ow to ± 5% of the set point
Run Time ...............................8 hrs minimum at 3000 ml/min and 20 inches water back pressure;
dependent on media used
Flow Indicator ....................... Built-in fl ow indicator with 250-ml division; scale marked at 1, 2, 3,
4, and 5 L/min
Power Supply ........................MSHA approved when used with rechargeable NiCad battery pack,
2.0 Ah capacity, 4.8 V, Cat. No. P22434 only. Recharge battery pack
in fresh air only.
Charging Time ......................16 hrs with approved charger
(varies with capacity and
level of discharge)
Operating Temperature ........32 to 113 F (0 to 45 C)
Storage Temperature ...........-40 to 113 F (-40 to 45 C)
Charging Temperature ......... 41 to 113 F (5 to 45 C)
Operating Humidity ..............0 to 95% Relative
Protect sample pump from exposure to water and weather.
Multiple-tube Sampling ........ Built-in constant pressure regulator allows user to take up to four
simultaneous samples at different fl ow rates up to 500 ml/min each
using an adjustable low fl ow holder
RFI-Shielding
Performance..........................Complies with requirements of EN 55022, FCC Part 15 Class B,
EN 50082-1; frequency range of the radiated susceptibility test was
27 MHz to 1000 MHz. CE marked.
Intrinsic Safety ......................MSHA-approved to 30 CFR, section 18; approval no. 2G-4036-0
Tested for use in methane-air mixtures only
Intrinsic safety and other approvals may be void if SKC pumps are not
repaired by SKC or authorized SKC repair centers.
Replacing parts with non-SKC parts voids intrinsic safety approvals
and any warranty.
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Operation
High Flow Applications (1000 to 3000 ml/min)
Setup
Ensure pump is not running. Fully charge the battery by connecting the charger plug to
the sampler charging jack (Figure 1, #15). Use only an SKC charger designated for this
model. CAUTION: DO NOT CHARGE OR OPERATE PUMP FROM CHARGER
IN HAZARDOUS LOCATIONS. Charge in fresh air only. Using fl exible tubing,
connect the sampling media to the pump intake (Figure 1, #6). Ensure the battery is fully
charged and the pump is set for high fl ow before calibrating and sampling. (See Return to
High Flow, page 6.)
After charging the battery pack, it is good practice to run the pump for approximately 5 minutes before calibrating. This ensures the battery is in more steady-state
conditions and improves the agreement in pre and post-sampling calibrations.
Use only an SKC-approved charger designated for this model to ensure
reliable performance. Failure to do so voids any warranty.
Ensure proper orientation of charging cable before plugging it into the
charging jack. Improper orientation/contact will short-circuit the battery
and voids any warranty.
Short-circuiting the battery pack will render it immediately inoperative.
Failure to follow warnings and cautions voids any warranty.
Setting the Flow Rate
Before use, allow pump to equilibrate after moving it from one
temperature extreme to another.
Remove the tamper-resistant cover. Ensure pump has run for 5 minutes before
proceeding with calibration. Connect a calibrator to the intake of the sampling media
using fl exible tubing. Start the pump using the ON/OFF switch (Figure 1, #1). Set the
fl ow rate using the FLOW ADJUSTMENT SCREW (Figure 1, #4). When the fl ow rate
is set, use the ON/OFF switch to turn off the pump. Disconnect the calibrator. Replace
the medium used for calibration with a new unexposed medium for sample collection.
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Sampling
For personal sampling, clip the sample collection media to the worker in the breathing
zone. Start the sampling period by using the ON/OFF switch to turn on the pump.
Record the start time. At the end of the shift, turn off the pump and record the stop
time.
Before use, allow pump to equilibrate after moving it from one
temperature extreme to another.
When using impingers, place an in-line trap between the pump and the
impinger to protect the sampler from liquid or vapors. FAILURE TO USE
THE IMPINGER TRAP VOIDS ANY WARRANTY. The impinger and trap
may be mounted to the sampler using the accessory mounting screws
(Figure 1, #5) or placed in a holster at the worker’s waist.
Protect sample pump from weather when in use outdoors.
Use of any device other than the approved battery pack to power the
pump voids MSHA approval and any warranty.
Failure to follow warnings and cautions voids any warranty.
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Low Flow Applications (5 to 500 ml/min)
Using Single Adjustable Low Flow Holder
Setup
Low fl ow applications require an adjustable low fl ow holder (Figure 2). Ensure pump is not
running. Fully charge the battery by connecting the charger plug to the sampler charging
jack (Figure 1, #15). Use only an SKC charger designated for this model. CAUTION:
DO NOT CHARGE OR OPERATE PUMP FROM CHARGER IN HAZARDOUS
LOCATIONS. Charge in fresh air only. Ensure battery is fully charged before calibrating
and sampling.
After charging the battery pack, it is good practice to run the pump for approximately 5 minutes before calibrating. This ensures the battery is in more steady-state
conditions and improves the agreement in pre and post-sampling calibrations.
Use only an SKC-approved charger designated for this model to ensure
reliable performance. Failure to do so voids any warranty.
Ensure proper orientation of charging cable before plugging it into the
charging jack. Improper orientation/contact will short-circuit the battery
and voids any warranty.
Short-circuiting the battery pack will render it immediately inoperative.
Failure to follow warnings and cautions voids any warranty.
Start the pump using the ON/OFF switch (Figure 1, #1) and adjust the fl ow rate to
approximately 1.5 L/min (Figure 1, #4).
Remove the cap screw covering the regulator isolation valve (Figure 1, #11). Turn the
exposed screw 4 to 5 turns counterclockwise. Replace the cap screw. The pump is now set
for low fl ow.
Setting the Flow Rate
Before use, allow pump to equilibrate after moving it from one
temperature extreme to another.
Ensure pump has run for 5 minutes before proceeding with calibration. Connect a single
adjustable low fl ow holder (Figure 2) to the pump intake (Figure 1, #6) using fl exible tubing.
Insert an opened sorbent tube into the rubber sleeve of the low fl ow holder so the arrow on
the tube points toward the holder.
Connect a calibrator to the exposed end of the sorbent tube. Loosen the brass fl ow adjust
screw on the low fl ow holder. Using the ON/OFF switch, turn on the pump. Adjust the fl ow
rate by turning the fl ow adjust screw on the adjustable low fl ow holder until the calibrator
indicates the desired fl ow.
Do not adjust the fl ow on the pump. Adjust the fl ow only by using the fl ow
adjust screw (Figure 2, #2) on the low fl ow holder.
When the fl ow rate is set, turn off the pump. Disconnect the calibrator. Replace the sorbent tube
used for setting the fl ow with a new sorbent tube for sample collection. Place the appropriate
size tube cover (Figure 2, #5) over the tube, and screw it in place on the low fl ow holder.
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Sampling
For personal sampling, clip the low fl ow holder with tube and tube cover to the worker in
the breathing zone.
Before use, allow pump to equilibrate after moving it from one
temperature extreme to another.
Use only an SKC-approved charger designated for this model to ensure
reliable performance. Failure to do so voids any warranty.
Ensure proper orientation of charging cable before plugging it into the
charging jack. Improper orientation/contact will short-circuit the battery
and voids any warranty.
Short-circuiting the battery pack will render it immediately inoperative.
Failure to follow warnings and cautions voids any warranty.
Start the sampling period by using the ON/OFF switch to turn on the pump. Record the start
time. At the end of the shift, turn off the pump and record the stop time.
Return to High Flow
Remove the low fl ow holder. To return to high fl ow, remove the cap screw covering the
regulator isolation valve (Figure 1, #11). Turn the exposed screw clockwise until it stops.
(Do not over-tighten.) Replace the cap screw. The pump is now set for high fl ow.
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Low Flow Applications (5 to 500 ml/min)
Using Multiple-tube Adjustable Low Flow Holder
When performing multiple-tube sampling using an adjustable low fl ow holder (dual,
tri, or quad), ensure the regulator has been activated and the pump fl ow rate is set
at 1.5 L/min. The maximum fl ow rate through any one tube is 500 ml/min
the sum of all tube fl ow rates. If the sum is ≤ 1000 ml/min, proceed with calibration
and sampling without any further adjustment to pump fl ow rate. If the sum is > 1000
ml/min, set the pump fl ow rate 15% higher than the sum of tube fl ow rates.
* Back pressure across some sample tubes can be higher than average. In these instances, the maximum fl ow rate of
500 ml/min per tube may not be achieved.
Setup
Low fl ow applications require an adjustable low fl ow holder (Figure 2). Ensure pump
is not running. Fully charge the battery by connecting the charger plug to the sampler
charging jack (Figure 1, #18). Use only an SKC charger designated for this model.
CAUTION: DO NOT CHARGE OR OPERATE THE PUMP FROM CHARGER
IN HAZARDOUS LOCATIONS. Charge in fresh air only. Ensure battery is fully
charged before calibrating and sampling.
After charging the battery pack, it is good practice to run the pump for approximately 5 minutes before calibrating. This ensures the battery is in more steady-state
conditions and improves the agreement in pre and post-sampling calibrations.
Use only an SKC-approved charger designated for this model to ensure reliable
performance. Failure to do so voids any warranty.
Ensure proper orientation of charging cable before plugging it into the
charging jack. Improper orientation/contact will short-circuit the battery and
voids any warranty.
*
. Calculate
Short-circuiting the battery pack will render it immediately inoperative.
Failure to follow warnings and cautions voids any warranty.
Remove tamper-resistant cover. Adjust the fl ow to 1.5 L/min using the FLOW ADJUST-
MENT SCREW (Figure 1, #4).
Remove the cap screw (Figure 1, #11) covering the regulator isolation valve. Turn the
exposed screw 4 to 5 turns counterclockwise. Replace the cap screw. The pump is now
set for low fl ow.
Setting the Flow Rate
Before use, allow pump to equilibrate after moving it from one
temperature extreme to another.
Ensure pump has run for 5 minutes before proceeding with calibration. Connect a
multiple-tube adjustable low fl ow holder (Figure 2) to the pump intake (Figure 1, #6) us-
ing 1/4-inch Tygon tubing.
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Insert an opened sorbent tube into each rubber sleeve of the low fl ow holder with the ar-
row on the tube pointing toward the holder.
If sampling with fewer tubes than number of ports, insert unopened sorbent
tubes in the empty ports to seal them.
Note the fl ow rates specifi ed by each sampling method and add them together. If the sum
is ≤ 1000 ml/min, proceed to the next step. If the sum is > 1000 ml/min, multiply the
total tube fl ow rate by 1.15 and set the pump for that fl ow rate.
Connect a calibrator to the exposed end of a sorbent tube, loosen the brass fl ow adjust
screw on the low fl ow holder, and activate the pump using the ON/OFF switch.
Turn the fl ow adjust screw (Figure 2, #2) on the low fl ow holder until the desired fl ow
rate is achieved. Turn clockwise to decrease the fl ow.
Do not adjust the fl ow on the pump. Adjust the fl ow only by using the fl ow
adjust screw on the low fl ow holder.
Do not exceed 500 ml/min fl ow rate per tube.
When the desired fl ow is set on the initial tube, turn off the pump. Remove the calibrator
from the tube and connect to the exposed end of the next sorbent tube. Turn on the pump
and repeat the fl ow adjustment process until all tubes are fl ow calibrated. Changing the
fl ow on one tube will not affect the fl ow rate through the remaining tubes.
Do not exceed 500 ml/min fl ow rate per tube.
For tri and quad low fl ow holder models, fi rst rotate each anti-tamper cover (Figure 2,
#1) to expose the fl ow adjust screws, then adjust until the calibrator indicates the desired
fl ow.
When the fl ow rate is set for each tube, turn off the pump and disconnect the calibrator.
Replace the media used for calibration with unexposed media for sample collection. Use
a protective tube cover to prevent tube breakage.
If sampling with fewer tubes than number of ports, insert unopened sorbent
tubes in the empty ports to seal them.
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Sampling
Before use, allow pump to equilibrate after moving it from one
temperature extreme to another.
For personal sampling, clip the low fl ow holder with tubes and covers to the worker in
the breathing zone.
Protect sample pump from weather when in use outdoors.
Use of any device other than the approved battery pack to power the pump
voids MSHA approval and any warranty.
Failure to follow warnings and cautions voids any warranty.
Start sampling by using the ON/OFF switch at the beginning of the desired sampling
period. Record the start time. At the end of the sampling period, turn off the pump and
record the stop time.
Return to High Flow
Remove the low fl ow holder. To return to high fl ow, remove the cap screw (Figure 1,
#14) covering the regulator isolation valve. Turn the exposed screw clockwise until it
stops. (Do not over-tighten.) Replace the cap screw. The pump is now set for high fl ow.
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Preventive Maintenance
To enhance battery life, SKC ships battery packs separate from the pump.
Once installed, completely charge the battery pack before operating the
pump.
Battery Pack Installation and Maintenance
Removal—Remove the two screws (Figure 1, #13) that secure the battery pack (Figure
1, #14) and loosen the case screws above and below the belt clip (two screws). Carefully
slide the battery pack out from under the belt clip (Figure 1, #16). Ensure that the battery
is kept level.
Replacement—Slide the front edge of the battery pack under the belt clip and position
the battery pack to engage the grooves in the case. Slide the battery pack toward the
pump until it is fl ush with the pump case on all sides. Reinstall battery screws (Figure 1,
#13) and tighten the case screws (Figure 1, #13).
Charge Maintenance
For proper maintenance of battery packs, SKC offers chargers (see Optional Accessories,
page 16) that condition the battery for optimum performance in 16 hours. Ensure pump is
not running during charging. Follow charger instructions.
To comply with intrinsic safety regulations, do not charge or operate the
pump from the charger in hazardous locations.
Using a non-approved charger voids any warranty.
Use of a repaired or rebuilt battery pack voids MSHA approval and any
warranty.
Use of any device other than the approved battery pack to power the pump
voids MSHA approval.
Ensure proper orientation of charging cable before plugging it into the
charging jack. Improper orientation/contact will short-circuit the battery and
voids any warranty.
Short-circuiting the battery pack will render it immediately inoperative.
Failure to follow warnings and cautions voids any warranty.
Fully charge packs before use. For more information on SKC pump batteries,
visit http://www.skcinc.com/instructions/1756.pdf.
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Pump Inlet Filter Maintenance
The SKC sampler is fi tted with a fi lter/trap inside a clear plastic intake port housing.
This prevents particles from being drawn into the pump mechanism. The fi lter should
be checked visually to assure that it does not become clogged. If maintenance is
necessary, follow this procedure:
1. Clean dust and debris from around the fi lter housing.
2. Remove the four screws (Figure 1, #7) and the front fi lter housing.
3. Remove and discard the fi lter membrane (Figure 1, #9).
4. Remove O-ring (Figure 1, #8).
5. Clean the fi lter housing.
6. Insert O-ring* and a new fi lter membrane (Cat. No. P2240901).
7. Reattach the front fi lter housing and cross-tighten the four screws.
* Replace with new O-ring only as needed.
Pump Service
Pumps under warranty should be sent to SKC Inc. for servicing (see Service Policy
page 12).
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Service Policy
To return products to SKC for servicing:
1. Call 800-752-8472 (724-941-9701 for international customers) to obtain a Return
Materials Authorization (RMA) number and Product Decontamination Form.
2. Carefully package the product. Mark the RMA number on any correspondence
relating to the return and on the outside of the package.
3. Ship to SKC, freight prepaid, to the following address:
SKC Inc.
National Service Center
863 Valley View Road
Eighty Four, PA 15330
Package product carefully to prevent damage during transit. Include a contact
name, phone number, shipping address, RMA number, and a brief description
of the problem. For nonwarranty repairs, a purchase order number and billing
address are also required. The Service Department will contact nonwarranty
customers with an estimate before proceeding with repairs.
Note: SKC Inc. will accept for repair any SKC product that is not contaminated
with hazardous materials. Products determined to be contaminated will be returned
unserviced.
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Part Descriptions for Figure 1
Use only SKC-approved parts to ensure reliable performance.
Failure to do so voids any warranty.
See page 14 for drawing.
Model 224-44XRM
No. Description
1 ON/OFF Switch
2 Tamper-resistant Cover: Protects controls from incidental contact or tampering
3 Cover Screw: Fastens tamper-resistant cover
4 Flow Adjustment Control: Adjusts fl ow from 1000 to 3000 ml/min
5 Accessory Mounting Screws (2): Secure accessories such as impinger and
trap holders
6 Intake/Filter Housing: Air intake port and trap
7 Filter Housing Screws (4): Secure fi lter housing
8 Filter O-ring: Leak seal for fi lter in housing
9 Filter (crimped fi ber polyester): Filters particulates before entering pump
10 Built-in Flowmeter: Monitors fl ow changes
11 Cap Screw: Accesses regulator isolation valve
12 Cap Screw: Accesses exhaust port
13 Battery Pack Screws (2): Secures pack to pump
14 Battery Pack Assembly: Provides power to pump (Cat. No. P22434)
15 Charging Jack: Connector for battery charger
16 Belt Clip: Secures pump to worker
A Compensation Pot A: Adjusts pump compensation which is factory set. Access
screw guards against accidental contact or tampering.
B Compensation Pot B: Adjusts pump compensation which is factory set. Access
screw guards against accidental contact or tampering.
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Figure 1 - 224 44XRM Sample Pump
See parts listing on page 13.
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Figure 2 - Adjustable Low Flow Holder
1. Anti-tamper cover (tri and quad only)
2. Flow adjust screw(s)
3. Rubber sleeve
4. Sorbent sample tube
5. Protective cover
d
Quad Adjustable Low Flow Holder
e
Single Adjustable Low Flow Holder
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Optional Accessories
Calibrator: Cat. No.
Defender Primary Standard Calibrator,
50 to 5000 ml/min, includes
lead-acid battery, charger (100-240 V),
Optimizer 110 Software, and 1-meter
serial cable 717-510M
Adjustable Low Flow Holders: Cat. No.
Single Holder 224-26-01
Dual Holder 224-26-02
Tri Holder 224-26-03
Quad Holder 224-26-04
Protective Sample Tube Covers: Cat. No.
Type for tubes up to:
A 70 mm long (standard charcoal) 224-29A
B 110 mm long (large charcoal) 224-29B
C 150 mm long 224-29C
D 220 mm long 224-29D
Battery Maintenance: Cat. No.
Single Charger, 110-240 V 223-227A
Replacement Battery Pack P22434
Miscellaneous: Cat. No.
Screwdriver Set (included with pump) 224-11
Protective Nylon Pouch with belt and
shoulder strap, available in:
Black 224-87
Red 224-95A
Protective
Nylon Pouch
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SKC INC.
LIMITED ONE YEAR WARRANTY
1. SKC warrants that its instruments provided for industrial hygiene, environmental, gas analysis,
and safety and health applications are free from defects in workmanship and materials under normal
and proper use in accordance with operating instructions provided with said instruments. The term
of this warranty begins on the date the instrument is delivered to the buyer and continues for a
period of one (1) year.
This warranty does not cover claims due to abuse, misuse, neglect, alteration, accident, or use in
application for which the instrument was neither designed nor approved by SKC Inc. This warranty
does not cover the buyer’s failure to provide for normal maintenance, or improper selection or
misapplication. This warranty shall further be void if changes or adjustments to the instrument are
made by other than an employee of the seller, or if the operating instructions furnished at the time of
installation are not complied with.
2. SKC Inc. hereby disclaims all warranties either expressed or implied, including any implied
warranties of merchantability or fi tness for a particular purpose, and neither assumes nor authorizes
any other person to assume for it any liability in connection with the sale of these instruments. No
description of the goods being sold has been made a part of the basis of the bargain or has created or
amounted to an express warranty that the goods will conform to any such description. Buyer shall
not be entitled to recover from SKC Inc. any consequential damages, damages to property, damages
for loss of use, loss of time, loss of profi ts, loss of income, or other incidental damages. Nor shall
buyer be entitled to recover from SKC Inc. any consequential damages resulting from defect of the
instrument including, but not limited to, any recovery under section 402A of the Restatement, Second
of Torts.
3. This warranty extends only to the original purchaser of the warranted instrument during the
term of the warranty. The buyer may be required to present proof of purchase in the form of a paid
receipt for the instrument.
4. This warranty covers the instrument purchased and each of its component parts.
5. In the event of a defect, malfunction, or other failure of the instrument not caused by any
misuse or damage to the instrument while in possession of the buyer, SKC Inc. will remedy the
failure or defect without charge to the buyer. The remedy will consist of service or replacement of the
instrument. SKC Inc. may elect refund of the purchase price if unable to provide replacement and
repair is not commercially practicable.
6. (a) To obtain performance of any obligation under this warranty, the buyer shall return the
instrument, freight prepaid, to SKC Inc., at the following address:
SKC Inc., National Service Center
863 Valley View Road
Eighty Four, PA 15330 USA
(b) To obtain return authorization information or for further information on the warranty
performance you may telephone 724-941-9701 at the above address. See Service Policy section in
operating manual (if applicable).
7. This warranty shall be construed under the laws of the Commonwealth of Pennsylvania which
shall be deemed to be the situs of the contract for purchase of SKC Inc. instruments.
8. No other warranty is given by SKC Inc. in conjunction with this sale.
Form #3755 Rev 0207
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MSHA Approval Certifi cate
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