Use As Sampling Pump; Sampling With Preset Time; Sampling With Preset Volume; Filling Sample Collection Bags - MSA TOXIMETER II Manuel D'utilisation

8 Use as Sampling Pump

The TOXIMETER II can be used as a pump for
active probe sampling with sample tubes.
The given volume flow is approx. 250 ml/min and
ensures good adsorption for most components on
the commonly used adsorption media.
The flow is not adjustable. Measuring time or
sample volume can be programmed.
Note: Sample tubes and impingers are always
connected to the inlet port. Sample collection
bags are always connected to the outlet port. Note
memory effects.

8.1 Sampling With Preset Time

If the hazard from certain components is to be
measured over a defined time, then the sampling
time can be preset. The menu point SAMPLE
must be selected.
Under these conditions the volume flow, with
tube inserted, must be measured with a
suitable instrument, e. g. OPTIFLOW or
DIGICAL.
The sampled volume V is the product of sampling
time t and volume flow V
V (L) = t (min) x V

8.2 Sampling With Preset Volume

The menu point VOLUME must be selected.
Volumes up to 100 L (liters) can be set. The
sampling time varies under these measurement
conditions according to the flow resistance of
the sampling tube used; it is approx. 3 min per
liter.
The use of a volume flow measuring instrument
is not required.
At the end of the sampling procedure the required
sampling time is shown on the display alternating
with the present volume. This is also shown, if the
measurement is terminated prematurely.

8.3 Filling Sample Collection Bags

Connect outlet of pump to sample bag with
suitable hose and supply gas sample through the
inlet port of the pump.
10
F
(L/min)
F

9 Use With Sampling Hose

For measurement at inaccessible places a 4 m
long sampling hose with tube holder is available.
Break off both tips and insert firmly the tube into
the receptacle to be used. Detector tubes to be
used on the inlet port (white arrow) are inserted
into the tube holder of the hose and the
measurement is taken with the required number of
strokes and appropriate factor.
Detector tubes to be used on the outlet port (blue
arrow) are inserted into the blue receptacle of
the TOXIMETER II. The sampling hose is inserted
into the white receptacle and the empty
tube holder of the sampling hose is located at the
place to be measured.
The sampling hose must be flushed with at least
one stroke of the gas to be measured. Only after
this the detector tube should be inserted into the
pump and the measurement started.
Gases and vapors can lead to "memory"
phenomina. Corrosive gases can destroy
the membrane pump.
Before use determine risks with help of
substance data. After use flush pump with
plenty of fresh air.

10 Leak Tightness Test

In the main menu selecting TIGHT starts a test of
the leak tightness of the inlet and outlet
recepticles and the pump.
Place an unopened tube in the inlet port (white
arrow) of the pump. For testing the outlet port
(blue arrow) close tightly receptacle with fingertip.
The TOXIMETER II is leak tight and ready for use
if a value of at least 99% is shown in the display.
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