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The
unique design of the RH BluePeg
probes allows for 1
hour quick-test or
72
hour testing (ASTM requirement) or for long-term monitoring.
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The
probes can be removed from the sleeves and reused after each test.
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The probes are small enough to disappear below the surface of the
slab
and can be covered by a protective cap between readings.
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Lignomat's RH meters are: Ligno-Tec RH, Ligno-DuoTec BW, Ligno-VersaTec
Data-loggers are: Memo-Chip BL2 (on-site) and RHTrans (on the Internet)
The
one-time, low investment for the RH Packages and the fact that the
probes can be
used over and over again guarantees the minimum cost per test. There is
no need to purchase a new sensor for every test. For calibration
requirements see the last paragraph.
Easy
to use and easy to read.
The RH BluePeg easily
fits into the
sleeve and is protected by a cap while work can go on around it. Each
sleeve comes with a 5/8" plastic cylinder inside, which positions the
probe at the correct distance from the bottom of the sleeve and seals
the space between the sleeve and the probe as required by ASTM F2170-11. For
measurements the RH cable is connected. The rugged fail-proof connector
(same as 3.5mm stereo plug) assures easy handling and a reliable
connection. The cable-end-cover secures the probe during measurements.
Press the read key on the meter and instantly the RH value and the
serial number for the RH Probe are displayed. It is that easy. Anybody
can take readings. There is
no twisting of a cable or contact alignment necessary. There is no
set-up procedure required for the meter and the display is easily read
from the meter in your hand. Once the test is completed, connect the
cable again and pull the RH BluePeg probe out of the sleeve for the next
test.
ASTM
Regulations: To
comply with the ASTM standard F2170-11, the sleeves or hole liners have
to be in the slab for 72 hours before readings are documented. There is
no requirement about how long the probes have to be in the sleeve,
other than that the readings should be stable.
The
RH BluePeg Advantage
If BluePeg pobes are left in the sleeves for at least 24 hours, readings are stable
and no more equilibration time is needed. If those probes are leap-frogged,
stable readings are available within 45 minutes to 1 hour.
You
can do quick-checks, 72 hour readings or long time monitoring. You can
decide according to job requirements to insert the RH BluePeg probes at
the time the sleeves are placed or at any time later. You can leap-frog
the probes if you
are short on RH BluePegs for the required number of test holes.
Calibration
The
RH BluePeg probe comes with a single microchip sensing
element,
factory calibrated to NIST-traceable standards. CMOS
R
technology
insures the RH BluePegs highest reliability and long term stability. In
addition, the sensing element is covered by a filter that keeps the
sensor free of dust at all times for accurate readings.
ASTM
regulations require a calibration check 30days before useage.
Using salt solutions is an acceptable method of checking probe
calibration. Lignomat offers salt solutions for 33% and 75% relative
humidity. Lignomat also offers 3 calibration checks for free during the
first year. With this promise, the initial investment in a meter and
probes is all that is necessary to take as many tests as necessary
within the first year. It is recommended to send the probes in to the
manufacturer at least annually for a calibration check.
If
you ever have doubts about the calibration or for extremely sensitive
testing, you can check the calibration of the RH BluePeg probes before
and after test readings have been taken. This is only possible, if
the probe is removable.
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