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MOON GAS MONITORING DEVICES |
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MOONPHOS AIR SAMPLING PUMP
(DETECTOR PUMP) |
The MOONPHOS precision gas
detector consist of two parts
viz. i) the gas detector tubes
and ii) air sampling pump is
used to draw a precisely defined
volume of sample air through the
detector tube for determining
the impurity gas concentrations
in the air sample. This manual
describes the air sampling pump
and its operation for impurity
gas measurement using detector
tubes.
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MOONPHOS DETECTOR TUBES |
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Gas |
Measuring Range
ppm |
Volume of air drawn
ml |
TLV
v/v |
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PH3 |
5 - 100
50 - 1000
150 - 3000 |
50
50
50 |
0.3
0.3
0.3 |
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MOONPHOS PERSONAL PHOSPHINE
MONITORS |
When continuous low level
monitoring of Phosphine at work
places is desired for
occupational safety, where
Phosphine is used, Moonphos
pocket size Personal Monitor
provides the answer.
Moonphos Phosphine Alert is an
easy-to-use pocket size
instrument with the following
features: |
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This small battery-powered
instrument is designed to be
worn on the belt or in the chest
pocket. It provides a continuous
Phosphine concentration display
in the immediate instrument
area. When the concentration
exceeds the alarm set points,
audible and visual warnings
indicate that an unacceptable
Phosphine level is present |
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MOONPHOS PORTABLE PHOSPHINE
MONITORS |
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For reliable on-the-spot
measurement of Phosphine at work
places or for monitoring of
Phosphine concentration during
furnigation, Moonphos portable
Phosphine monitors provide the
best choice |
They are found in ranges as
given below:
They can be provided various
sampling adaptors
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Sensor |
Electrochemical |
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Sampling method |
Diffusion or Sample |
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Response time |
Less than 30 seconds |
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Accuracy |
Better thab +_10% of
full scale |
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Power supply |
DC operation using a 9V
internal Ni-Cd battery |
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Battery life |
8-10 hour continuous |
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Operating temp |
0-40...C |
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Humidity |
Below 90% relative
humidity |
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Gas |
Range |
Resolution |
TLV |
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Phosphine |
0-2000ppm |
1ppm |
0.3 |
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ppm |
0-20ppm |
0.1ppm |
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FUMIGATION DOSIMETER |
For ensuring adequate
fumigation, it becomes necessary
to monitor the Phosphine
concentration during the entire
period of furnigation for
knowing the Phosphine does in
ppm per hour. This involves many
measurements. An alternate
approach is, to use a dosimeter
tube to determine the total dose
at the end of the furnigation by
the stain length, obtained on
the tube. The furnigation
dosimeter tube is just suitable
for this purpose. The stain
length on the tube reads the
time taken to develop that
length of stain, when exposed
continuously to 1000ppm of
Phosphine
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Phosphine dose |
= |
time (read on the tube)
x 1000ppm hours |
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and |
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Average Phosphine conc.
during furnigation |
= |
Phosphine dose
ppm
period of furnigation |
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Gas |
Dose
(x103 ppm
hrs) |
TLV
ppm |
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Phosphine |
1-200 |
0.3 |
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Phosphine |
0.1-20 |
0.3 |
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MOONPHOS AIR SAMPLING PUMP
(DETECTOR PUMP) |
For entering a grain godown
where furnigation is in progress
in grain stacks, it is essential
to ensure that Phosphine level
araound the stacks is within
acceptable limits, to meet the
safety standards. Phosphine
indicator strips do this job. It
is the easiest means of
detecting Phosphine is suspected
areas.
They are paper strips imregnated
with Phosphine-sensitive
chemicals by a special process.
They detect Phosphine by their
change of colour.
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Concentration of
Phosphine |
Exposure Time |
Colour Change |
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0.3ppm |
30min. |
yellow to light pink |
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1.0ppm |
10min. |
yellow to pink |
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2.0ppm |
5min. |
yellow to pink |
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5.0ppm |
2min. |
yellow to pink |
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10ppm |
1min. |
yellow to pink |
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MOON TRADING SDN
BHD (571233-T)
33, 35, 37, 39, JALAN INDAH 2/18,
TAMAN UNIVERSITI INDAH,
43300 SERI KEMBANGAN,
SELANGOR, MALAYSIA.
Tel/Fax: 603-8941 0329 / 603-8941 6329 Email:
moon@moontrading.com |
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Copyright
© 2005 MOON TRADING SDN BHD, All Rights Reserved.
Designed & Maintained by
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