Gastec 93 Instructions

+
STEC
No.93
Instructions for
Acrolein 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. The use of non-Gastec parts or components in Gastec's detector tube and pump system, or
use of a non-Gastec detector tube with a Gastec pump, or use of a Gastec detector tube with
a non-Gastec pump may result in property damage, serious bodily injury, and death; voids all
warranties; and voids all performance and data accuracy guarantees.
&.
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, pieces or 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 sample.
.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
O
40°C (32 104°F).
3. Use this tube within the relative humidity range of O - 90%.
4. This tube may be interfered with by the coexisting gases. Please refer to the table
"INTERFERENCES" below.
5. Shelf life and storage condition of the tube are marked on the label of the box of tube.
APPLICATION OF THE TUBE :
Use this tube for detecting Acrolein 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.)
Detecting Layer
Measurina Ranae 3.3 10 ppm 10 800 ppm
Number of Pump Strokes 4 2
Correction Factor 1/3 1
Samplinq Time 2 minutes per pump stroke
Detectinq Limit 2 ppm (n=4)
Colour Chanae Yellow - Red
Reaction Principle
3CH2 : CHCHO
+
(NH2OH)3H3PO4 - H3PO4
H3PO4
+
Base - Phosphate
Coefficient of Variation : 10% (for 10 to 200 ppm), 5% (for 200 to 800 ppm)
**Shelf Life : Please refer to the validity date printed on the box of tubes.
**Store the tubes at 10°C (50°F) or below in a refrigerator.
CORRECTION FOR TEMPERATURE, HUMIDITY AND PRESSURE :
Temperature : Correct for temperature by the table below.
Tube
True Concentration (ppm)
Reading
0°C 5°C 10°C 15°C 20°C 25°C
(ppm) (32°F) (41°F) (50°F) (59°F) (68°F) (77°F)
800
-
-
2000 1300 800 500
600 4600 2700 1550 950 600 400
400 3600 1900 1000 600 400 270
200 1900 1100 600 320 200 160
100 550 330 200 130 100 88
50 250 130 80 60 50 43
20 60 50 40 30
20 17.5
10 25 20 16 13 10 8
Humidity : No correction is required.
Pressure : To correct for pressure, multiply the tube reading by
Tube Reading* (ppm)
x
1013 (hPa)
Atmospheric Pressure (hPa)
*
This value is after other correction(s), if applied any.
MEASUREMENT PROCEDURE:
30°C 35°C
(86°F) (95°F)
300 250
250
200
200 160
130 110
75 63
35 30
15 12.5
7 6
40°C
(104°F)
200
170
140
90
50
25
10
5
1. For checking the leakage of the pump, insert a fresh sealed detector tube into the pump.
Follow instructions provided with the pump operating manual.
2. Break tips off a fresh detector tube with the tube tip breaker of the pump.
3. Insert the tube into the pump inlet with arrow (
G►
)
on the tube pointing toward pump.
4. Make certain the pump handle is all the way in. Align the guide mark on the pump body with
the guide mark on the handle.
5. Pull the handle all the way out until it locks at one pump stroke (100 ml). Wait two minutes
and confirm the completion of the sampling. Repeat the above sampling procedure one more
time.
6. For smaller measurements less than 10 ppm, repeat the above sampling procedure two more
times until the stain reaches the first calibration mark.