Gastec 13M Instructions

GASTEC
No.13M
Instructions for
Carbon Disulphide Detector Tube
FOR SAFE OPERATION :
Carefully read this manual and the instruction manual of your Gastec Gas Sampling Pump.
.&.WARNING:
1. Use only Gastec detector tubes in a Gastec pump.
2. Do not interchange or use non-Gastec parts or components in Gastec's detector tube and
pump system.
3. Using non-Gastec parts or components in Gastec's detector tube and pump system or using
a non-Gastec detector tube with a Gastec pump or using a Gastec detector tube with a non-
Gastec pump may damage your detector tube and pump system, or may cause serious
injuries, or death to the end-user. It will also void all warranties, and guarantees regarding
performance and data accuracy .
.&..
CAUTION : If you do not observe the following precautions, you may
suffer injuries or damage the product.
1. When breaking the tube ends, keep away from eyes.
2. Do not touch the broken glass tubes, broken pieces and reagent with bare hand(s).
3. The sampling time represents the time necessary to draw the air sample through the tube.
The tube must be positioned in the desired sampling area for the entire sampling time or until
the flow finish indicator indicates the end of the sampling.
.6.NOTES : For maintaining performance and reliability of the test
results, observe the following.
1. Use Gastec Gas Sampling Pump together with Gastec Detector Tubes only for the purposes
specified in the instruction manual of the detector tube.
2. Use this tube within the temperature range of 0 - 40°C (32 - 104°F ).
3. Use this tube within the relative humidity range of 0 - 90%.
4. This tube may be interfered with by the coexisting gases. Please refer to the table
"INTERFERENCES" below.
5. The shelf life and storage condition of the tube are marked on the label of the tube box.
APPLICATION OF THE TUBE :
Use this tube for detecting Carbon Disulphide in the air or in industrial areas and for determining
the environmental atmospheric condition.
SPECIFICATION :
(Because of Gastec's commitment to continued improvement, specifications are subject to
change without notice.)
Oxidizing Layer
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Detecting Layer
Measurina Ranae 15-50 ppm
50-1600 oom
1600 - 5120 ppm
Number of Pump Strokes 2 1
1/2
Stroke Correction Factor 0.30
1 3.2
Samplinq Time
1.5 minutes per pump stroke
45 seconds
Detectina Limit 10 oom /n=2\
Colour Chanae
Purole
--+
Yellow
CS2
+
l2Os
+
H2S2Q7
--+
SO2
+
CO2
Reaction Principle SO2
+
BaCl2
+
H2O
--+
BaSO3
+
2HCI
HCI
+
Base
--+
Chloride
Coefficient of Variation: 10% (for 50 to 400ppm), 5% (for 400 to 1600 ppm)
**Shelf Life: Please refer to the validity date printed on the tube box.
**Store the tubes in a dark and cool place.
CORRECTION FOR TEMPERATURE, HUMIDITY AND PRESSURE :
Temperature: Correct for temperature with the table below.
Temperature °C
0 °C 5°C 10 °C
15 °C 20°C 25 °C
(°F) (32°F) (41°F) (50°F) (59°F) (68°F) (77°F)
Correction Factor 2.15 1.58 1.35 1.11 1.00 0.91
Humidity : No correction is required between 0 - 90% R.H.
Pressure : To correct for pressure, multiply the tube reading by
Tube Reading* (ppm)
x
1013 (hPa)
Atmospheric Pressure (hPa)
30°C
(86°F)
0.79
*
This value is after other correction(s), if any, are applied .
MEASUREMENT PROCEDURE:
35°C
(95°F)
0.73
40 °C
(104°F)
0.66
1. For checking the leakage of the pump, insert a freshly sealed detector tube into the pump.
Follow the instructions provided with the pump operation manual.
2. Break the tips off the fresh primary tube and analyser tube by snapping off each tube end in
the tube tip breaker of the pump.
3. Connect the
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marked ends with rubber tubing after snapping off each end.
4. Insert the analyser tube securely into pump inlet with the arrow ( G► ) on the tube pointing
toward the pump.
5. Make certain the pump handle is all the way in. Align the guide marks on the pump body with
the guide marks on the handle.
6. Pull the handle all the way out until it locks at one pump stroke (100 ml). Wait 1.5 minutes
and confirm the completion of the sampling.
7. For smaller measurements less than 50 ppm, repeat the above sampling procedure one more
time until the stain reaches the first calibration mark. For measurements higher than 1600
ppm, prepare a fresh tube and perform a half pump stroke.
8. Read the concentration level at the interface where the stained reagent meets the unstained
reagent.
9. If temperature correction is necessary, obtain the true concentration by using the temperature
correction factor. Afterwards multiply the correction factor of pump stroke if necessary.
10. If pressure correction is necessary, use the pressure correction formula.