The Vaisala SPH20 Pressure Head effectively eliminates pressure variations in the barometer caused by wind. It offers excellent outdoor performance in cold, icy, and wet conditions. The SPH20 can be integrated directly with the Vaisala PTB210 barometer or any other barometer, making it suitable for severe outdoor applications.
The SPH20 static pressure head eliminates wind‑induced pressure variations for Vaisala barometers such as the PTB210. It features heated polycarbonate plates for reliable operation in cold, icy and wet outdoor conditions and can be mounted on a horizontal pole or sensor mast.
The guide covers mechanical assembly, mounting on a pole with two M6 fixing screws, electrical connections using the supplied quick connector, heating control settings, and procedures for changing the power supply from the default 12 V to 24 V. Maintenance tips and technical data are also included.
| Plates material | Polycarbonate |
|---|---|
| Bars material | Offshore Aluminium |
| Connection box material | Polycarbonate (IP65) |
| Weight | 1360 g |
| Mounting bolts | 2 bolts (M6 x min 20 mm) |
| Hose connection | Barbed fitting for 4 mm I.D. hose or Rp1/4 thread |
| Electrical connector | M12 connector |
| Default power supply | 12 V |
| Optional power supply | 24 V (with changed wiring) |
| Heating power consumption | ≈70 W |
| Operating temperature range | -60 °C … +80 °C |
Blow pressurized air into the opening between the plates to remove dust and debris.