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138
SPH10/20 Static Pressure Heads
for Minimizing Wind Induced Error
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 ‘filter 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
The SPH10/20 is easy to install and
connect. In the picture, a SPH10 is
connected to a PTB210 barometer.
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 flow
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.
Features/Benefits
▪
Minimizes wind induced error
▪
Easy-to-clean
▪
Reliable barometric pressure
measurement in all weather
▪
Easy-to-install
▪
Wind tunnel tested structure
- HUMIDITY / DEW POINT / 1
- PRESSURE / WEATHER 1
- ACC URATE 2
- Humidity 4
- Dew Point 4
- Mounting Options 9
- Graphical Display of 10
- History and 10
- Measurement Trends 10
- Outputs and Power Supply 10
- Options for Every Need 10
- Flexible Installation 11
- For Moderate Humidities 11
- Vaisala HUMICAP® 12
- Performance 12
- Measurement Trends and 12
- Real Time History 12
- 41 (1.6) 13
- 51 (2.0) 13
- 192 (7.56) 13
- 253 (9.96) 13
- 37.5 (1.48) 14
- 79.5 (3.13) 14
- 99.5 (3.92) 14
- Temperature Transmitters 16
- HMP361 for wall mounting 17
- HMP363 for confined spaces 17
- HMP364 for high pressure 17
- HMP365 for high temperature 18
- HMP367 for high humidities 18
- HMP368 for pressurized 18
- Transmitter 22
- Interchangeable Probe 24
- Fast, On-Site Calibration 26
- Measures both Humidity 26
- Resistant to Chemicals 28
- Vaisala INTERCAP 30
- Humidity and Temperature 30
- Transmitter Series HMW80 30
- HVACApplications 32
- Demanding Applications 34
- Unique Warmed Probe 34
- Vaisala HUMICAP® Sensor 34
- Chambers 36
- Probe HMP60 38
- Vaisala HUMICAP 40
- Probe HMP110 40
- Three Probes 42
- MI70 Link 42
- Reliable and Cost-ecient 47
- HVAC Products 47
- Fast and Easy-to-Use 48
- HMK15 Humidity Calibrator 50
- DTR500 Solar Radiation 54
- Versatile Outputs and 61
- (Wireless) Data Collection 61
- Easy Installation 61
- Probe Specifications 62
- Ensure dry 65
- Measure Humidity Directly 66
- DMT345, Accurate in Hot 66
- OEM Applications 70
- Low Maintenance 72
- Dewpoint temperature (°C) 75
- DMT132 Dewpoint Transmitter 76
- DEW POINT 77
- CALCULATED VARIABLES 77
- Indoor Applications 78
- 110 (4 .33) 79
- 85 (3.35) 79
- 33 (1.30) 79
- DSS70A Portable 82
- Sampling System 82
- Sampling Cells for 82
- Pressurized Processes 82
- Online Reliability 86
- Savings Across the Board 86
- Risk-Free, Greener 86
- Solution 86
- The Fruit of Experience 86
- Multiparameter Transmitter 88
- When Moisture is a Problem 89
- Knowledge is Power 89
- Literally 89
- Transmitter Series for Oil 90
- Moisture in Oil 90
- The Vaisala HUMICAP 91
- Hand-Held 91
- R1/2" ISO7/1 92
- Prevent it 95
- Transmitter for Oil 96
- Features/Benefits 100
- Technical Data 101
- 0 ... 2 % 102
- Interchangeable Probes 104
- Demanding OEM Applications 106
- GMM111 Carbon Dioxide Module 108
- Vaisala CARBOCAP 110
- Technology 110
- Two Sampling Methods 110
- Features/Benefi ts 112
- Demand-controlled Ventilation 114
- GMM112 Carbon Dioxide Module 118
- GMM20W Carbon Dioxide Module 120
- Pressure 122
- PTU300 Models 123
- Mechanics 126
- Accessories 126
- Dimensions 126
- IN CONTROLLED ENVIRONMENTS 127
- Take the Lab to the Field 130
- For more information, visit 131
- Standard PTB330TS 132
- PTB210 Digital Barometer 134
- Calculate 137
- Vaisala BAROCAP® 138
- Accuracy and Stability 138
- Applications 138
- Ideal for outdoor 140
- Carefree maintenance 140
- Operating Environment 142
- Available Options 142
- Figure 1 143
- Figure 2 with Process 143
- Valve Actuator and 143
- Test Jacks 143
- Measuring Acoustic 146
- Precipitation 146
- Wind Measurement 150
- Vaisala Service Offering 152
- Accredited Body 153
- Accredited Parameters 153
- Vaisala Filters 154
- Vaisala Filters continued 155
- Vaisala Contact Information 158
- ASIA AND PACIFIC 159
- NORTH AMERICA 159
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