Kitagawa AP-20 User manual

KOMYO RIKAGAKU KOGYO K.K.
DISTRIBUTOR’S NAME :
1-8-28 Shimonoge, Takatsu-ku, Kawasaki-City,
Kanagowa 213-0006, Japan
Tel:[phone]/Fax:[phone]
Specifications and external appearance are subject to change for the
reason of improvement without any prior notice.
※
GAS ASPIRATING PUMP
INSTRUCTION
MANUAL
KOMYO RIKAGAKU KOGYO K.K.
IME AP20/3
Kitagawa
166 Keystone Drive
Montgomeryville, PA 18936
800-828-4313
www.mathesongas.com

FOREWORD
Caution
Thi s instruction ma n ual uses the following sym bols to
indicate cauti ons and note s that promot e the safe and
cor rect use of this product.
Caution
Note
Note
Thank you for purchasing the Model AP-20 sampling pump. The Model
AP-20 pump is designed specifically for use with Kitagawa detector
tubes. The system with the available Kitagawa detector tubes can
detect the presence of more than 300 airborne gases and vapors.
FOR SAFE CORRECT USE
READ CAREFULLY BOTH THIS INSTRUCTION MANUAL AND THE
INSTRUCTION SHEETS FOR THE INDIVIDUAL DETECTOR TUBES
PRIOR TO USE OF THIS PRODUCT.
ENSURE THAT THIS INSTRUCTION MANUAL IS STORED IN A
CONVENIENT LOCATION FOR EASY REFERENCE AT ALL TIMES.
IF YOU HAVE ANY QUESTIONS REGARDING THIS MANUAL,
PLEASE CONTACT YOUR LOCAL DISTRIBUTOR, DEALER OR
MANUFACTURER REPRESENTATVE.
This “Caution” symbol indicates that failure to
observe this instruction can result in possible
personal injury or damage to property.
This “Note” symbol indicates instruction or advice
for the correct use of the product, to prevent
problems with the products or its interpretation.
1
2
3
With a detector tube inserted and the handle drawn back, the pump cylinder is
under a high vacuum. If the handle lock is released under vacuum conditions, it
will pull back suddenly. Holding the pump by the extended shaft can lead to
injury. Always hold the pump by the cylinder, never by the shaft.
Broken glass tube tips can fall from the tip cutter or storage area when using the
pump. To prevent glass contamination in restricted area (e.g., food processing
plants) use the optional Model B-191 Tip cutter.
Normal use of detector tubes requires the handling of broken glass tubes.
Safety glasses and protective gloves are recommended.
Detector tubes contain small amounts of chemical reagents, which may be
toxic. Avoid skin and eye contact with the internal chemical reagents.
4
If the reagent is completely discolored (i.e., the detector tube is over- ranged) after
measuring a high concentration toxic gas (e.g., a process measurement), the
possibility exists for harmful gas residue inside the cylinder. This gas will exhaust
from the back of the cylinder when the handle is pulled out for the next pump
stroke. Whenever the tube has fully discolored, purge the air inside the cylinder
by pulling and pushing the handle several times in a well-ventilated area.
5

ACCESSORIES CHECK LIST
AP-20 ASPIRATING PUMP COMPONENTS
DETECTOR TUBE TYPICAL COMPONENTS
Your kitshould contain the following items.Verify that the accessories package is complete when unpacking.
ASPIRATING PUMP 1pc. HAND STRAP 1pc.
HAND STRAP
TIP CUTTERBOTTOM CASE
SAMPLE GAS
SAMPLE VOLUME
SAMPLE VOLUME
FLOW DIRECTION
FLOW DIRECTION FLOW DIRECTION
PRE-TREAT TUBE CONNECTING TUBE
DETECTOR TUBE
TO RUBBER TUBE
CONNECTOR
TO RUBBER TUBE
CONNECTOR
SAMPLE GAS
CYLINDER
HEAD CASE
RUBBER
TUBE
CONNECTOR
PISTON SHAFT HANDLE
FLOW INDICATOR
CONNECTOR
HOLDER
GREASE(10g) 1pc. INSTRUCTION MANUAL 1 copy
CARRYING CASE 1pc.
RUBBER TUBE
CONNECTOR 2pcs.

Note
A leaking aspirating pump may cause lower readings or no
response at all. Always conduct the following check before use.
CHECKING PRIOR TO USE (Leakage Test)CHECKING PRIOR TO USE (Leakage Test)
MAINTENANCE
Application of new vacuum grease
CAUTION!
HEAD CASE
CYLINDER
PISTON
LEAKED
NOT LEAKED
RUBBER TUBE
HOLDER
ASPIRATING
PUMP
HANDLE
GREASE
RUBBER TUBE
CONNECTOR
RUBBER GASKET
BOTTOM CASE
Insert a sealed, unbroken detector
tube into the rubber tube connector.
Align the red line on the bottom case
and that of shaft, and pull the handle
to full stroke locked position.
Wait one minute. Unlock the handle
by turning it 1/4 turn (90 degrees),
and check to see if the handle
returns to the initial position. When
thelo ckisrele ase du n de rf ull
vacuum, the handle tends to snap
back quickly. To prevent possible
damage to the locking device allow
th ehandle tore turnsl o w ly by
hold ing the cylinder and ha nd le
sec ur el y. Ifth e ha n dl e re tu rn s
completely to the original position, the
performance is satisfactory.
HANDLE WILL TEND TO SNAP BACK INTO
THE PUMP QUICKLY. Otherwise refer to
maintenance procedure in pump
instructions.
If the pump fails the leak test, the
following are possible causes.
A) A loose inlet connector holder.
B) Cracks and deterioration of the
rubber tube connector.
C) Deterioration of the grease.
T o c o r r e c t a l e a k i n g p u m p ,
co n sul t th e “M A I N TE N A N CE ”
section.
Pull the handle part way and turn the bottom case
counterclockwise to remove it.
Pull the piston out from the cylinder.
Wipe off the old grease and dirt from the piston and
inside the cylinder using a clean paper towel. Apply a
thin coat of vacuum grease to the rubber gasket of the
piston. When wiping off the old grease, be careful not
to scratch the inside walls of the cylinder. Reassemble
pump.
Replacement of Rubber Tube Connector
If the rubber tube connector appears cracked or
deteriorated, remove the connector holder and replace it
with new one.

Notes prior to use
OPERATING PROCEDURE
1
2
3
MEASUREMENT
ON SAMPLING
COMPLERION OF
SAMPLING
Prepare Aspirating pump.
Connect the gas detector tube to the aspirating pump.
The sample gas must be drawn
through the gas detector tube in
the correct direction. Insert the
gas detector tube into the rubber
tube connector with the tube’s
directional arrow pointing toward
the pump.
Pull the handle.
Align the red line on the bottom
case and that on the shaft and
pull the pump handle to its full
100mL locking position. If the
sample calls for a half stroke, pull
out the pump handle until 50mL
line appears, and shaft will be
locked at 50mL.
Draw the sample gas.
Draw the sample gas for the
specified time at the desired
sampling point, and confirm with
the flow indicator that the sample
is completed. The sample time
required for each detector tube is
stated clearly in the instruction
sheet.
Return the handle.
When the sample is completed, turn
the handle 1/4 turn (90 degrees)
clockwise or counterclockwise to
unlock the handle. Confirm that
the handle remains extended. (If
the handle returns part way, the
sample is incomplete, and this
will cause a low reading). Some
detector tubes require extra pump strokes (i.e., more than 100mL of air).
In this case, push back the handle and repeat the operation.
Read the concentration.
Remove the gas detector tube from the aspirating pump after the
prescribed sample volume has been drawn. Read the concentration of
gas at the maximum end of the stain against the printed scale on the
detector tube. Some detector tubes require a temperature correction
using a table or correction coefficient provided in the instructions.
The operating procedure varies from one detector tube to
another. Before proceeding, read carefully the individual
instruction sheets provided in each box.
Some detector tubes require temperature correction using
tables provided in the instruction sheets. Be sure that the
tube temperature has reached equilibrium with the sample
area before drawing the sample.
When using detector tubes at pressure other than normal
atmospheric pressure, correction of the reading is
necessary. Refer to the section “MEASUREMENT AND
OPTIONS UNDER SPECIAL CONDITIONS.” To read the
tube scale directly, it is necessary that the pressure of the
sample gas is equal to that of aspirating pump.
When sampling high-pressure systems, first collect the
sample in a gas sampling bag (non-adsorbent material),
then use the pump to draw the sample from the bag.
Cut both ends of the gas detector tube.
Insert the tip of gas detector tube into the tip cutter and scratch the
tip of tube by rotating it for one
revolution, then pull it toward
you. (The glass tip can be
thrown away by removing the tip
cutter cap.)
Check the pump for leaks in accordance with “CHECKING PRIOR TO
USE”. (Refer to page 5)

X
X
X
X
HOW TO READ THE GAS CONCENTRATION
FROM GAS DETECTOR TUBE
TEMPERATURE CORRECTION PROCEDURE
READING OUT POINT
DISCOLORED LAYER
READING OUT POINT
Reading out point
DISCOLORED LAYER
side
side
[Direct reading type] Read the concentration of gas at the maximum end of the
stain against the printed scale on the detector tube.
[EX.2] When the detector tube reading is 0.4 mg/L at 23 degrees C,
(How to get readings from
Temperature Correction Table)
When the temperature is 23, the
value at the intersection of 20 and 3
is the correction Coeffcient.
Read the concentration of gas at the maximum end of the stain.
Read out the numerical value at the middle of the oblique layer.
[Concentration chart type]
Align the zero end of the detecting reagent (inlet side of the tube) with
the O – O line on the concentration chart. Align the other end of the
same layer (exit sides or pump side of the tube) with the X – X line
respectively. Read the gas concentration at the maximum end of the
stain against the scale on the card. If the end is slanted, read at the
middle point of oblique stain.
The temperature of concern is that of the detector tube
(usually the temperature of the sample gas).
IN CASE OF USE OF CORRECTION TABLE
IN CASE OF USE OF CORRECTION COEFFICIENT
[EX.1] When the tube reading is 550 ppm at 25 degrees C, the true
concentration is found by interpolating between the concentrations
listed for 20 and 30 degrees C. In this example, the corrected value
is 560 ppm.
Temperature correction (At 20℃)
Temperature Correction Table
Temp.
Temp.
True concentration of carbon monoxide (ppm)
Scale reading
Scale reading ℃
the true concentration of water vapour is 0.36 mg/L by the
following calculation.
0.4 mg/L × 0.90 ≒0.36 mg/L

DETECTOR TUBE ASPIRATING PUMP
ASPIRATING PUMP
RUBBER
EXTENSION HOSE
DETECTOR TUBE EXTENSION
SAMPLING ROD
A rubber extension hose (shown below) is used for remote detection of potentially
harmful gases prior to entering a confined space such as a manhole or tank. The
extension hose is placed between the detector tube and the aspirating pump to
determine the gas concentration. The rubber extension hose is available in length of 5
or 10 meters.
Remote measurement
RUBBER
EXTENSION HOSE
EXTENSION SAMPLING ROD
GAS SYRINGE
TIP CUTTER
B-191
HOT AIR PROBE
High temperature gas measurement
The allowable temperature range for detector tubes is generally, 0 to 40 degrees C.
When measuring gases at temperatures outside of 0 to 40 degrees C, collect a volume
of gas into a container, transport it to a moderate area (i.e., indoors) and allow it to
equilibrate. Then draw the sample from the container. Care must be taken to choose
a container of a material that is compatible with target gas. (e.g., A glass syringe of 100mL
or 200mL is a suitable container).
When flue gas or other high
temperature gas is sampled, use
the Hot Air Probe.
High concentration gas measurement
High concentration gas exceeding
the measuring range of the detector
tube may be sampled as follows.
Collect a volume of sample gas into
a glass syringe and dilute with
fresh air. (See photograph). The
tube reading is then multiplied by
the ratio of dilution to determine
the actual concentration.
Example: Draw 50mL of sample gas
into a 100mL syringe. Complete the
syringe draw with fresh air. Take a
reading and multiply by 2.
Measuring in an atmosphere under
pressure or reduced pressure
1) 3)
4)
5)
5)
If 100mL of gas is collected at a pressure that is two times atmospheric pressure, it is
equivalent to 200mL of gas collected at normal atmospheric pressure. When
measuring at pressures other than normal atmospheric pressure, a pressure correction
is required. A true concentration can be obtained by the following equation. However,
if the tube’s concentration scale is nonlinear, a correction error is produced. Therefore
it is recommended to collect the sample in a gas sampling bag, then measure it at
normal atmospheric pressure for more accurate readings. When collecting gas in a
high pressure atmosphere, please note that the bag can be ruptured by the expansion
of the sample gas.
Corrected value ＝ Reading value on detector tube × 1013 [hPa]/
Atmospheric pressure in the measuring place [hPa]
Tip cutter Model B-191
When cutting the ends of detector tubes, splintering of
glass tips can be avoided by using the Model B-191
Tip cutter. The container is transparent to let you see
when it needs to be emptied.
Other options & spare parts
The following items are available as spare parts. (i.e., extra options)
Rubber tube connector Grease
Tip cutter Fixing screw
2)
MEASUREMENT & OPTIONS UNDER THE SPECIAL CONDITIONS

DISPOSAL OF DETECTOR TUBES
A detector tube contains a chemical reagent which reacts with
the target gas. The chemical reagents used vary among
different types of detector tubes, and may include substances
regulated by laws for proper disposal. When discarding used
detector tubes, dispose of them in accordance with local
disposal regulations. For further information contact your local
distributor or the manufacturer’s head office or branches.