Vaisala SPH10, SPH20 Technical data
SPH10/20 Static Pressure Heads
for Minimizing Wind Induced Error
www.vaisala.com
Wind induced effects are one of
the main sources of error when
measuring barometric pressure.
Variations due to strong and gusty
wind can be overcome by using a
static pressure head to ‘lter out’ the
effect of dynamic pressure.
The Vaisala Static Pressure Head
Series SPH10/20 are designed to
minimize the errors caused by wind.
The wind tunnel tested structure
is both horizontally and vertically
symmetrical. This design ensures
reliable barometric pressure
measurements in all weather.
Ideal for outdoor
installations
Vaisala’s static pressure heads
are available in two models: the
Vaisala Static Pressure Head SPH10
is a basic version, and the Vaisala
Static Pressure Head SPH20 is a
heated version for reliable operation
in snowy and icy conditions. The
warmed SPH20 contains a thermostat
that switches on the warming power
at temperatures, where the risk of
icing may occur.
Composed of ultraviolet stabilized PC
plastics and offshore aluminium, the
SPH10/20 static pressure heads are
durable and weather resistant.
The SPH10/20 protects against
rain and condensed water, thus
preventing capillary condensation
of a water column in the pressure
channel which results in pressure
error. The drain holes in the lower
plate allow rain and water to ow
out. The static pressure heads have
internal netting which prevents
insects and debris from blocking the
pressure channel.
Carefree maintenance
The SPH10/20 static pressure heads
are easy to install and disassemble,
service and clean – even at the
installation site. Vaisala BAROCAP
Digital Barometer PTB210 can be
installed directly on top of the
SPH10/20 static pressure heads.
Other barometers can be connected
to the heads with pressure tubing.
SPH10 and SPH20 are a perfect pair
for all Vaisala barometers. They
ensure an accurate and reliable
measurement in all weather
conditions.
®
The SPH10/20 is easy to install and
connect. In the picture, a SPH10 is
connected to a PTB210 barometer.
Features/Benefits
Minimizes wind induced error
▪
Reliable barometric pressure
▪
measurement in all weather
Wind tunnel tested structure
▪
Easy-to-clean
▪
Easy-to-install
▪
Technical data
General
Operating temperature -60 ... +80 °C (-76 ... +176 °F)
Weight
SPH10 800 g
SPH20 1360 g
Material PC plastic, offshore aluminium
Mounting with 2 bolts (M6 X 20 mm min)
Hose connection barbed fitting for 4 mm I.D. hose
or Rp1/4 thread (parallel)
Dimensions
Dimensions in mm
SPH10
SPH20
Electrical connections M12 connector
Power supply factory setting 12 V
changed connection 24 V
Thermostat switching temperature
On +4 °C (±3 °C)
+39.2 °F (±4.4 °F)
Off +13 °C (±3 °C)
+55.4 °F (±4.4 °F)
Power consumption during heating 70 W
SPH20
For more information, visit
www.vaisala.com or contact
us at sales@vaisala.com
Ref. B210907EN-A ©Vaisala 2009
This material is subject to copyright protection, with all
copyrights retained by Vaisala and its individual partners. All
rights reserved. Any logos and/or product names are trademarks
of Vaisala or its individual partners. The reproduction, transfer,
distribution or storage of information contained in this brochure
in any form without the prior written consent of Vaisala is strictly
prohibited. All specifications — technical included — are subject
to change without notice.
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