humidity / dew point / tempeRAtuRe / moistuRe in oil ... - Vaisala
humidity / dew point / tempeRAtuRe / moistuRe in oil ... - Vaisala
humidity / dew point / tempeRAtuRe / moistuRe in oil ... - Vaisala
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www.vaisala.com<br />
SPH10/20 Static Pressure Heads<br />
for M<strong>in</strong>imiz<strong>in</strong>g W<strong>in</strong>d Induced Error<br />
W<strong>in</strong>d <strong>in</strong>duced effects are one of<br />
the ma<strong>in</strong> sources of error when<br />
measur<strong>in</strong>g barometric pressure.<br />
Variations due to strong and gusty<br />
w<strong>in</strong>d can be overcome by us<strong>in</strong>g a<br />
static pressure head to ‘filter out’ the<br />
effect of dynamic pressure.<br />
The <strong>Vaisala</strong> Static Pressure Head<br />
Series SPH10/20 are designed to<br />
m<strong>in</strong>imize the errors caused by w<strong>in</strong>d.<br />
The w<strong>in</strong>d tunnel tested structure<br />
is both horizontally and vertically<br />
symmetrical. This design ensures<br />
reliable barometric pressure<br />
measurements <strong>in</strong> all weather.<br />
Ideal for Outdoor<br />
Installations<br />
<strong>Vaisala</strong>’s static pressure heads<br />
are available <strong>in</strong> two models: the<br />
<strong>Vaisala</strong> Static Pressure Head SPH10<br />
is a basic version, and the <strong>Vaisala</strong><br />
Static Pressure Head SPH20 is a<br />
heated version for reliable operation<br />
<strong>in</strong> snowy and icy conditions. The<br />
warmed SPH20 conta<strong>in</strong>s a thermostat<br />
that switches on the warm<strong>in</strong>g power<br />
at temperatures, where the risk of<br />
ic<strong>in</strong>g may occur.<br />
Composed of ultraviolet stabilized PC<br />
plastics and offshore alum<strong>in</strong>ium, the<br />
SPH10/20 static pressure heads are<br />
durable and weather resistant.<br />
The SPH10/20 protects aga<strong>in</strong>st<br />
ra<strong>in</strong> and condensed water, thus<br />
prevent<strong>in</strong>g capillary condensation<br />
of a water column <strong>in</strong> the pressure<br />
channel which results <strong>in</strong> pressure<br />
error. The dra<strong>in</strong> holes <strong>in</strong> the lower<br />
plate allow ra<strong>in</strong> and water to flow<br />
out. The static pressure heads have<br />
<strong>in</strong>ternal nett<strong>in</strong>g which prevents<br />
<strong>in</strong>sects and debris from block<strong>in</strong>g the<br />
pressure channel.<br />
Carefree Ma<strong>in</strong>tenance<br />
The SPH10/20 static pressure heads<br />
are easy to <strong>in</strong>stall and disassemble,<br />
service and clean – even at the<br />
<strong>in</strong>stallation site. <strong>Vaisala</strong> BAROCAP ®<br />
Digital Barometer PTB210 can be<br />
<strong>in</strong>stalled directly on top of the<br />
SPH10/20 static pressure heads.<br />
Other barometers can be connected<br />
to the heads with pressure tub<strong>in</strong>g.<br />
SPH10 and SPH20 are a perfect pair<br />
for all <strong>Vaisala</strong> barometers. They<br />
ensure an accurate and reliable<br />
measurement <strong>in</strong> all weather<br />
conditions.<br />
The SPH10/20 is easy to <strong>in</strong>stall and<br />
connect. In the picture, a SPH10 is<br />
connected to a PTB210 barometer.<br />
Features/Benefits<br />
M<strong>in</strong>imizes w<strong>in</strong>d <strong>in</strong>duced error ▪<br />
▪<br />
▪<br />
▪<br />
Reliable barometric pressure<br />
measurement <strong>in</strong> all weather<br />
W<strong>in</strong>d tunnel tested structure<br />
Easy-to-clean<br />
▪ Easy-to-<strong>in</strong>stall<br />
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