Kitagawa AP-20 User manual

INSTRUCTION MANUAL
HYDROGEN SULPHIDE DETECTOR TUBE No.120U
★READ THIS INSTRUCTION MANUAL AND THE INSTRUCTIONS OF THE ASPIRATING PUMP PRIOR TO
USING THIS PRODUCT.
★DO NOT DISCARD CAREFULLY THIS INSTRUCTION MANUAL UNTIL ALL OF THE TUBES IN THIS BOX
ARE USED UP.
1. PERFORMANCE:
Measuring Range
and Pump Stroke
: 0.2 - 6.0 ppm
: 1/2 pump stroke
0.1 - 3.0 ppm(*)
1 pump stroke
(*)Graduations on the detector tube are based on 1 pump stroke.
Sampling Time
Colour Change
Detectable Limit
Operating Temperature
Aspirating Pump
: 0.5 minutes
1 minute
: Pale yellow→Pink
: 0.05ppm (1 pump stroke)
: 0 - 40℃(32-104°F)(Temperature correction is necessary.)
: Model AP-20, AP-20S, 400B, AP-1, AP-1S or 400A
CAUTION
1. THE DETECTOR TUBE CONTAINS CHEMICAL REAGENTS.
2. DO NOT TOUCH THESE REAGENTS DIRECTLY ONCE TUBES WERE BROKEN.
3. KEEP THE TUBES OUT OF THE REACH OF CHILDREN.
4. IF THE CONCENTRATION IS OVER THE FULL SCALE, THE HIGH CONCENTRATION
OF HYDROGEN SULPHIDE REMAINS IN THE ASPIRATING PUMP. BE CAREFUL NOT
TO BREATHE THE REMAINING GAS. AFTER MEASUREMENT, THE REMAINING GAS
IS PUSHED OUT FROM THE BOTTOM CASE OF THE PUMP (FROM A IN FIG.1) Fig.1
WHEN THE HANDLE IS PUSHED BACK AND PULLED. IN CASE OF THE ABOVE, PUSH BACK
AND PULL THE HANDLE WITHOUT CONNECTING THE TUBE AT THE LOCAL EXHAUST
VENTILATION DEVICE. REPEAT THIS OPERATION AT LEAST FIVE TIMES IN ORDER TO
REMOVE THE REMAINING GAS.
NOTICE
1. USE ONLY WITH PUMP MODELS AP-20, AP-20S, 400B, AP-1, AP-1S OR 400A.
OTHERWISE, CONSIDERABLE ERROR IN INDICATION MAY OCCUR.
2. BEFORE TESTING, CHECK THE ASPIRATING PUMP FOR LEAKS. (REFER TO ITEM 8.
INSPECTION OF ASPIRATING PUMP.)ANY PUMPS SHOWING SIGNS OF LEAKAGE
SHOULD BE CORRECTED BEFORE USE.
3. DO NOT USE THIS TUBE OUTSIDE THE STATED OPERATING TEMPERATURE RANGE.
4. STORE TUBES IN A COOL AND DARK PLACE (0-25℃/32-77°F), AND USE BEFORE
EXPIRATION DATE PRINTED ON THE TOP OF THE BOX.
5. PRIOR TO USE, READ ITEM 9. USER RESPONSIBILITY CAREFULLY.
6. READ THE CONCENTRATION IMMEDIATELY AFTER DRAWING THE SAMPLE.
2. SAMPLING AND MEASUREMENT:
Fig.2
①Break both ends of the detector tube.
CAUTION SAFETY GLASSES AND GLOVES SHOULD BE WORN TO PREVENT INJURY FROM
SPLINTERING GLASS.
②Insert the detector tube into the aspirating pump securely as shown in Fig.2. (Arrow mark shall point to the pump.)
③Align the guide marks on the shaft and stopper of the aspirating pump.
④Pull the pump handle at a full stroke until it locks and wait for 1 minute or until the completion of sampling is confirmed
with the flow indicator of the pump. (See descriptions about the flow indicator in the instruction manual of the pump.)
⑤On completion of sampling, read the scale at the maximum point of the stained layer.
⑥When the concentration is over the scale range, a 1/2 pump stroke can be used to determine concentrations of 0.2 - 6.0
ppm.
1)Remove the detector tube from the pump.

2)Turn the pump handle right or left by 1/4 (90o), push it toward to the pump.
3)Insert the new tube into the aspirating pump.
4)Pull the pump handle at a 1/2 stroke until it locks and wait for 0.5 minutes or until the completion of sampling is
confirmed with the flow indicator of the pump.
5)On completion of sampling, read the scale at the maximum point of the stained layer.
6)Then multiply the reading value by 2.
SPECIAL
NOTE:
Ⅰ. The scale is calibrated at 20℃(68°F), 50 %R.H. and 1013hPa. Readings obtained in other
circumstances should be corrected.
(REFER TO ITEM 3. CORRECTION FOR AMBIENT CONDITIONS.)
Ⅱ. When the maximum point of the stained layer is unclear or oblique, read the scale at the centre
between the longest and shortest points.
3. CORRECTION FOR AMBIENT CONDITIONS:
①Temperature; The scale is calibrated based on the temperature of 20℃(68°F). Readings obtained in other temperature
circumstances should be corrected with the following temperature correction table.
Table of the coefficient for temperature correction (based on 20℃)
Temperature
(℃)
0
5
10
15
20
25
30
35
40
Correction Factor
0.80
0.85
0.90
0.95
1.0
1.0
1.05
1.10
1.15
Procedure of temperature correction: Actual readings can be obtained by multiplying the readings of tubes by
coefficient for temperature correction shown in the above. Therefore,
Actual Hydrogen sulphide concentration (ppm)=
Reading value (ppm)×Coefficient for temperature correction
②Humidity; No correction is necessary.
③Atmospheric Pressure;
True concentration = Tube reading ×1013
Atmospheric pressure(in hPa)
4. INTERFERENCE:
Arsine changes the colour of the whole reagent to pale orange and coexistence of more than 0.25ppm of Arsine gives
higher readings. More than 0.5ppm of Hydrogen selenide produces a similar stain and coexistence of them gives higher
readings. More than 0.2ppm of Mercaptans produces a similar stain and coexistence of them gives higher readings.
Phosphine changes the colour of the whole reagent to pale pink and coexistence of more than 0.4ppm of Phosphine gives
higher readings. More than 3ppm of Hydrogen cyanide changes the colour of the whole reagent to pale orange and
coexistence of Hydrogen cyanide with Hydrogen sulphide does not affect on the readings if the maximum end point of the
pink stain is discernable. Less than 1000ppm of Sulphur dioxide does not affect on the readings. More than 50ppm of
Nitrogen dioxide changes the colour of the whole reagent to pale orange and coexistence of more than 1ppm of Nitrogen
dioxide gives lower readings. Ammonia does not change the colour of reagent itself, but coexistence of 1ppm Ammonia with
Hydrogen sulphide fade the discoloured layer from the zero end of the detecting reagent(inlet side of the tube).
5. CHEMICAL REACTION IN THE DETECTOR TUBE:
H2S + 2CH3C6H4SO3Ag →Ag2S + 2CH3C6H4SO3H
6. DISPOSAL OF TUBES:
USED TUBES SHOULD BE DISPOSED CAREFULLY ACCORDING TO RELEVANT REGULATIONS, IF ANY.
7. HAZARDOUS AND DANGEROUS PROPERTIES OF HYDROGEN SULPHIDE:
TLV-TWA◆
Explosion range in air
: 1ppm
: 4.0 - 45.5％
◆Threshold Limit Value established by the American Conference of Governmental Industrial Hygienists, 2012.
8. INSPECTION OF ASPIRATING PUMP:
Checking for leaks;
①Insert a sealed, unbroken detector tube into the pump.
②Align the guide marks on the shaft and stopper of the pump.
③Pull the handle to a full stroke and wait for 1 minute.
④Unlock the handle and allow it to return slowly into the pump by holding the cylinder and handle securely.
CAUTION HANDLE WILL TEND TO SNAP BACK INTO THE PUMP QUICKLY.
⑤If the handle returns completely to the original position, the performance is satisfactory. Otherwise,
refer to maintenance procedures shown in the instruction manual of the pump to correct the leakage.
9. USER RESPONSIBILITY:
It is the sole responsibility of the user of this equipment to ensure that the equipment is operated, maintained, and
repaired in strict accordance with these instructions and the instructions provided with each Model AP-20, AP-20S,
400B, AP-1, AP-1S or 400A aspirating pump, and that detector tubes are not used beyond their expiration date or

have a colour change different to that stated in the Performance specifications.
The Manufacturer and Manufacturer's Distributors shall not be otherwise liable for any incorrect measurement or
any damages, whether damages result from negligence or otherwise.
※Product specifications are subject to change without any prior notice. IME1209/6
Printed in Japan