Operating Instructions
Universal Sample Pump
Cat. No. 224-PCXR8
SKC Inc.
863 Valley View Road
Eighty Four, PA 15330
Form 37713 Rev 1302
Table of Contents
Description ..................................................................... 1
Performance Profi le ........................................................................................ 2
Operation ........................................................................ 5
High Flow Applications ...................................................................................5
Low Flow Single-tube Applications ............................................................... 10
Low Flow Multiple-tube Applications ............................................................15
Maintenance ................................................................. 20
Pump Inlet Filter ...........................................................................................20
Battery Pack Care ........................................................................................20
Installing the Battery Pack ............................................................................21
Replacing Battery Pack ................................................................................21
Pump Service ...............................................................................................22
Warranty ....................................................................... 22
Parts Descriptions ....................................................... 24
Replacement Parts ...................................................... 26
Optional Accessories .................................................. 28
Indicates a warning or caution
Indicates a note or a premier feature of the pump
Universal Sample Pump Operating Instructions are also available in
Spanish, German, Mandarin, and French Canadian.
Description
The PCXR8 Universal Sample Pump is a constant fl ow air sampler suitable 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.
Low Flow Regulator
(beneath cap screw)
allows pump to be switched
from high to low fl ow.
Rechargeable Battery
Digital LCD
shows run time, set times,
battery check, and fault functions.
Tamper-resistant Cover
prevents changes to settings.
Recessed Flow Adjustment
adjusts fl ow rate between
1000 and 5000 ml/min.
On/Off Switch
Air Discharge Port
(beneath cap screw)
Touch Keypad
for programmable
functions.
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
provides a visible check
of relative fl ow rate during
sampling, from 0.5 to 5 L/min.
PCXR8 Universal Sample Pump
1
Performance Profi le
Flow Range: 1000 to 5000 ml/min (UL Listed model)
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 to 2500 ml/min at 40 inches water back pressure
Typical Back Pressure of Sampling Media (inches water)
Flow Rate (L/min) 1.0 1.5 2.0 2.5 3.0
Filter/Pore Size (μm)
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 23456
37-mm PVC, 5.0 11222.5
Compare the information in this table to pump compensation range to determine appropriate applications.
Flow Control: Holds constant fl ow to ± 5% of the set point
Run Time: NiCad Battery: 8 hrs minimum at 4000 ml/min and 20 inches water back pressure;
NiMH Battery: 12 hrs minimum at 4000 ml/min and 20 inches water back pressure;
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 or
Charging Time: 6 to 8.5 hrs with PowerFlex charger
(varies with ba ery capacity
and level of discharge)
Intrinsic Safety: UL Listed for: Class I, Division 1 and 2, Groups A, B, C, D; Class II,
Temperature: Operating: 32 to 113 F (0 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 tube
RFI/EMI Shielding: Complies with requirements of EN 55022, FCC Part 15 Class B, EN 50082-1;
(5 to 500 ml/min requires adjustable low fl ow holder)
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
dependent on media used. See Table 1 on page 4.
dependent on media used. See Table 2 on page 4.
Battery Eliminator: Pump will provide extended runs.
6.0-V plug-in NiCad battery pack, rechargeable, 2.0-Ah capacity
A battery eliminator is available (see Optional Accessories); use voids the UL Listing for intrinsic safety.
Division 1 and 2, Groups E, F, G; and Class III, Temperature Code T3C
ATEX-approved models available. Contact SKC.
Storage: -4 to 113 F (-20 to 45 C)
Charging: 50 to 113 F (10 to 45 C)
Protect sample pump from weather when in use outdoors.
samples at different fl ow rates up to 500 ml/min each using optional adjustable low
fl ow holder.
frequency range of the radiated susceptibility test was 27 to 1000 MHz.
2
Flow Fault: If the pump is unable to compensate for longer than 15 seconds due to exces-
sive back pressure, the pump enters fl ow fault. During fl ow fault, the pump stops,
displays FLOW FAULT, pauses timing functions, and displays elapsed time or
pump time. Auto-restart is attempted up to 5 times.
Low Battery Fault: Pumps stops, displays LO BATT, pauses timing functions, and displays elapsed
time or pump time.
Battery Test: LCD shows battery condition prior to sampling.
Time Display: LCD displays up to 9999 minutes (6.8 days) at which point the display rolls over
to 0. Displays include sampler run time in minutes for sampling period elapsed
time, pump run time, or total elapsed time including delayed start
Timing Accuracy: ± 0.05% (± 45 seconds per day)
Timed Shutdown: Allows user to select minutes of operation before automatic shutdown.
Timed shutdown maximum setting is 9999 minutes (6.8 days).
Sampling Pause (Hold): Allows user to temporarily halt sampling without loss of timing data. Restart does not
require resetting time.
Delay On: Allows user to select minutes to delay test up to 9999 minutes (6.8 days)
Intermittent Sampling: Programmable to allow user to extend short-term samples over an extended period
of time to meet time-weighted average (TWA) requirements with a reduced number
of samples. Elapsed time maximum setting is 9999 minutes (6.8 days), at which time
the sample pump shuts down.
Tubing: Requires 1/4-inch ID tubing
CE marked UL Listed
ATEX-approved models available
3
Table 1. Pump Run Time in Hours with NiCad Battery
Following are typical run times achieved when using a fully charged nickelcadmium (NiCad) battery pack. Data is sorted by type of sample media. All run
times are listed in hours. Results obtained using a new pump and new fully
charged battery. Pump performance may vary.
Mixed Cellulose (MCE) fi lter, 0.8-μm pore size
Flow Rate (L/min)
2.0 24.1 16.3
2.5 21.4 14.5
3.0 19.1 11.0
3.5 17.8 10.7
4.0 15.4 **
4.5 14.6 **
Polyvinyl Chloride (PVC) fi lter, 5.0-μm pore size
Flow Rate (L/min)
2.0 31.6 21.7
2.5 27.7 24.0
3.0 27.0 18.6
3.5 22.8 16.4
4.0 19.4 16.2
4.5 19.0 14.6
** Filter back pressure exceeded pump capability during testing.
Filter Diameter
37 mm 25 mm
Filter Diameter
37 mm 25 mm
Note
Increases in back pressure during sampling due to buildup of sample
on the fi lter can decrease ba ery life.
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 obtained using a new pump and new fully charged
battery. Pump performance may vary.
Mixed Cellulose (MCE) fi lter, 0.8-μm pore size
Filter Diameter
37 mm 25 mm
Filter Diameter
37 mm 25 mm
Note
Flow Rate (L/min)
2.0 37 33
2.5 34 26
3.0 31 21
3.5 29 18
4.0 25 15
4.5 20 14
Polyvinyl Chloride (PVC) fi lter, 5.0-μm pore size
Flow Rate (L/min)
2.0 47 41
2.5 38 33
3.0 35 30
3.5 26 27
4.0 22 25
4.5 21 23
Increases in back pressure during sampling due to buildup of sample
on the fi lter can decrease ba ery life.
4
Operation
13
AIRCHEK
SAMPLER
5
4
3
2
1
SAMPLE PERIOD Ñ MINUTES
START
HOLD
FLOW
AND
BATTERY
CHECK
DIGIT
SET
PUMP
RUN
TIME
DIGIT
SELECT
TOTAL
ELAPSED
TIME
SET-UP MODE
FLOW
ADJ
ON
AIRCHEK SAMPLER
MODEL 224-PCXR8
U
L
¨
LISTED 124U
11
22
18
BACK
TOP
FRONT
12
8
7
6
5
4
3
2
20
20
19
High Flow Applications (1000 to 5000 ml/min)
2 Flow and battery check key
3 Start/hold key
4 Mode key
5 Set-up key
6 Digit set/pump run time key
7 Digit select/total elapsed
time key
8 On/off switch
11 Flow adjustment screw
Figure 1
Front, back, and top views of PCXR8 Sampler
For additional drawings, see pages 25 and 27.
12 Accessory mounting screws (2)
13 Intake/fi lter housing
18 Cap screw to regulator
19 Cap screw to air discharge port
20 Battery pack screws (2)
22 Charging jack
Setup
Install battery (see Installing the Battery Pack on page 21). For optimum
charge, ensure pump is not running. Charge the battery by connecting the
charger plug to the sampler charging jack (Figure 1, #22). Ensure that the
battery is fully charged before sampling.
After charging the battery pack, it is good practice to run the pump for
approximately fi ve minutes before calibrating. This ensures the battery is in more
1
steady-state conditions and improves the agreement in pre
and post-sampling calibrations.
Do not charge or operate pump from charger in hazardous
locations.
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 charge 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.
The battery pack may be kept on the SKC-approved charger
for an indefi nite time.
Charger and battery
pack connected
5
2
De-activating the Regulator
To ensure the pump is set for high fl ow,
remove the cap screw (Figure 1, #18)
covering the regulator valve and turn the
exposed screw clockwise until it stops.
(Do not overtighten.)
3
Replace the cap screw. The pump is
now set for high fl ow.
For high fl ow,
turn valve screw clockwise.
Setting or Verifying Flow Rate
Before use, allow pump to equilibrate after moving it from one temperature
extreme to another.
Ensure pump has run for
fi ve minutes before proceeding with calibration.
Using 1/4-inch Tygon®
tubing, connect the sampling medium to the pump
intake (Figure 1, #13).
Remove the tamper-resistant cover. Start the pump
using the On/Off switch
(Figure 1, #8). Press Start/Hold
(Figure 1, #3). Press Flow and Battery Check (Figure 1, #2). Adjust the fl ow using the fl ow adjustment screw (Figure 1, #11) until
the built-in rotameter reads 2 L/min. The LCD should indicate
BATT OK in the upper left corner (if it doesn’t, recharge the battery). Press Flow and Battery Check to place the pump in Hold.
Flow
adjustment
control
Sample
media
On/Off
switch
Calibrator
Calibration train with
fi lter cassette
Tubing
Connect a calibrator to the intake of the sampling medium.
Press Flow and Battery Check to start the pump, and set the fl ow
rate using the fl ow adjustment control (Figure 1, #11).
When the fl ow rate is set, press Flow and Battery Check to place
the pump in Hold. Disconnect the calibrator.
Replace the sampling medium used for calibration with an
unexposed medium for sample collection.
6
4
Programming Delayed and Intermittent
Sampling
To enter Delayed Start Mode:
From Hold, press Set-up. Enter
the number of minutes delay (up
to 9999) before the sampling
period begins by pressing Digit
Select and Digit Set. Digit Select
advances the fl ashing digit and
Digit Set increases the value of the
fl ashing digit.
To enter Sample Period Mode:
Press Mode. Press Digit Select
and Digit Set to enter the sampling
time period in minutes (up to
9999). Note: The sample period is
the total period in which sampling
is performed and not the pump run
time.
To enter Pump Period Mode:
Press Mode. This is the actual
running time of the pump. Use
Digit Select and Digit Set to enter
the pump run time in minutes (up
to 9999).
Intermittent Sampling Options:
Option 1 - Sample Period and
Pump Period Both > 10 Minutes
Ensure the Sample Period and Pump Period are set to be greater
than 10 minutes. Set the Pump Period for less time than the
Sample Period to initiate intermittent sampling. The pump will
automatically calculate pump “off” time and run 10 equal cycles
of “on” and “off” over the sampling period beginning with the
fi rst “on” time. Delayed start may be used with this option.
Option 2 - Sample Period and Pump Period Both < 10 Minutes
Ensure the Sample Period and Pump Period are set to be less than
10 minutes. The minimum “on” or “off” time setting is one minute.
continued on page 8
7
PCXR8 Keypad
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