14
2.7
Turning the ToxiPro off
To turn the ToxiPro off, press
and hold the MODE button down
until the instrument chirps three
times and OFF is displayed.
Once OFF is displayed, release
the MODE button. The
instrument has been successfully turned off when the
display goes blank.
If Always On Mode is enabled see section 2.8.1 for
instructions for turning off the ToxiPro.
2.8
Always On Mode
The ToxiPro may be configured
so that it may not be turned off
with the MODE button. In
Always On Mode, the MODE
button is used to reset the MAX,
STEL and TWA calculations.
Press and hold the MODE button until the instrument
chirps three times and “on” is displayed.
After the “on” screen, the ToxiPro will proceed through
the standard startup sequence until the current gas
readings screen is shown. MAX, STEL and TWA
calculations will be reset.
Always On Mode may be enabled or disabled with
BioTrak software.
Note: The ToxiPro must be turned off to replace the
battery. See section 2.8.1.
2.8.1 Turning Off in Always On Mode
BioTrak software must be used to turn the ToxiPro
off when it is in Always on Mode. BioTrak is
available at:
http://www.honeywellanalytics.com
1.
Open BioTrak and select ToxiPro.
2.
Select “Configure” in the software.
3.
Hold the MODE button down for about 10
seconds until IrDA is shown and establish the
connection with the PC.
4.
The Never Turn Off option appears at the bottom
left of every page in the configuration window.
Click the Turn Off button.
2.9
Sampling
The ToxiPro may be used in either diffusion or sample-
draw mode. In either mode, the gas sample must enter
the sensor compartment for the instrument to register a
gas reading.
In diffusion mode, the atmosphere reaches the sensor
by diffusing through the sensor port on the front of the
instrument. Normal air movements are enough to carry
the sample to the sensor. The sensor reacts quickly to
changes in the concentration of the gas being measured.
It is also possible to use the ToxiPro to sample remote
locations with the hand-aspirated sample-draw kit that is
available separately. During remote sampling, the gas
sample is drawn into the sensor compartment through
the probe assembly and a length of tubing.
The ToxiPro and manual
sample draw kit are delivered with polyester
urethane (fuel-resistant) tubing part number 53-001.
This material is completely compatible with the toxic
gases CO and H
2
S. When using the ToxiPro and
sample draw kit to sample with any of the gas types
and tubing lengths listed in the chart below, FEP-
lined tubing (part number 53-036) should be used.
Gas Type
Tubing Length
CL
2
, CLO
2
Up to 10 ft/3m Max.
HCN
Up to 100 ft/30m Max.
SO
2
, NO
2
,
PH
3
, NH
3
> 10 ft/3m up to 100
ft/30m Max.
Standard polyester urethane (fuel-resistant) tubing
(part number 53-001) can be used otherwise. Use of
other types of tubing, or beyond recommended
length(s), may cause inaccurate and potentially
dangerous readings that could result in serious
injury or death.
2.9.1 Sample draw kit usage
1.
Connect the shorter section of tubing from the
squeeze bulb to the sample draw adapter. Then
connect the longer section of tubing from the
squeeze bulb to the sample probe.
2.
Slide the sample draw adapter into the sensor
port on the ToxiPro and secure it.
3.
Cover the end of the sample draw probe
assembly with a finger, and squeeze the aspirator
bulb. If there are no leaks in the sample draw kit
components, the bulb should stay deflated for a
few seconds.
4.
Insert the end of the sample probe into the
location to be sampled.
5.
Squeeze the aspirator bulb several times to draw
the sample from the remote location to the sensor
compartment. Allow one squeeze of the bulb for
every one foot of sampling hose for the sample to
reach the sensors. Continue to squeeze the bulb
for an additional 45 seconds or until readings
stabilize.
6.
Note the gas measurement readings.
Hand aspirated remote
sampling only provides continuous gas readings for
the area in which the probe is located when the bulb
is being continuously squeezed.
Note: Each time a reading is desired, it is necessary
to squeeze the bulb a sufficient number of times to
bring a fresh sample to the sensor compartment and
to continue to squeeze the bulb until readings
stabilize.
Содержание ToxiPro CO
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