Installation and Maintenance SPH20 Static Pressure Head
–
Eliminates effectively wind disturbances from pressure measurements
– Adaptable to many barometers,directly to Vaisala PTB210
–
Fits to vere outdoor applicationspeugeot 音标
INTRODUCTION
Vaisala model SPH20 Pressure Head provides an effective elimination of pressure variations in the barometer due to the wind. The heated plates offer an excellent outdoor performance in cold, icy and w
et conditions. The SPH20 can be integrated directly with the Vaisala PTB210 barometer or any other barometer.ASSEMBLAGE
园林培训Screw the lower bar to the threaded sleeve of the lower plate (with 6 holes)MOUNTING
Select a location where no nearby objects will effect the pressure field. A suitable location would be an open place with no
buildings or trees in immediate surroundings. Attach the SPH20to a horizontal pole using a support flange. A suitable pole is Vaisala nsor mast, type DKP12. However, any other horizontal pole with two screws (M6) in a distance of 41 mm can be ud.NOTE! For achieving the best operation conditions, it is recommended to have distance of 1.0 m or more between the SPH20 and the vertical pole.
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- Attach the SPH20 to the pole by using two fixing screws
(M6) as indicated in Figure 1.The SPH20 can be removed by looning the two screws.ELECTRICAL CONNECTIONS
As shipped from factory, the power supply default is 12 V.
NOTE If the 24 V power supply is ud, open the cover of the
electrical unit enclosure and change the power supply wirings, e Changing the power supply wirings
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Power supply wiring of the SPH20 is done via the quick connector packed parately. Wire and connect the supply
theshowvoltage according to the installation instructions included in the quick connector package . Connection is prented below.After wiring, plug in the quick connector (e Figure 1).QUICK CONNECTOR WIRING
Figure 1. Installation of SPH20.
Figure 2. Connection of the PTB210.
-+
enclosure
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Ref. M010016en-A
TECHNICAL DATA
Property
Description / value Materials
Plates Polycarbonate
Bars Offshore Aluminium Connection box Polycarbonate (IP65)Weight 1360 g
Mounting
2 bolts (M6 x min 20 mm)Ho connection barbed fitting for 4 mm I.D.ho or Rp1/4 thread Electrical connections M12 connector
Power supply
12 V (default)
24 V (with changed wiring)
Temperatures at which the heating turns ON/OFF
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ON
OFF
(possibility for own heating control as well)
+4°C (± 3°C)+13°C (± 3°C)Power consumption during heating
about 70 W Operating temperature
-60°C...+80°C
HEATING CONTROL
The thermostat controlled heating elements switch on when temperature decreas down to +4°C (42°F). The heating
switches off when temperature increas up to +13 °C (55 °F).If an own heating control is needed, the thermostat can be shunted as follows:
1. Open the electrical enclosure cover
2. Remove the connecting board (Figure 3) by unscrewing the
3 screws.
3. Detach the wires from the thermostat.
4. Join the detached wires.
5. Replace the connecting board and clo the cover.
CAUTION Surface temperature of a heated plate can be 60°C
(140°
F) !
galerkinkiddleCONNECTION TO THE VAISALA PTB 210BAROMETER (Figure 2)
1. Detach the threaded nipple and the gasket (e Figure 1).
2. Place the O-ring into the barometer groove.
3. Attach PTB210 to SPH20 with two fixing screws.CONNECTION TO THE OTHER BAROMETERS
Connect the barometer to the threaded nipple (Figure 1) by using a plastic tube with an inner diameter of 4 mm.
MAINTENANCE
To clean the plates, blow pressurized air to the opening between
the plates.
CHANGING THE POWER SUPPLY WIRING
To change the power supply wiring from 12 V to 24 V:1. Open the electrical unit enclosure.
2. Disconnect white and brown wires from the + terminal (12 V).我们结婚了尹世雅
3. Disconnect blue and black wires from the - terminal (12 V).
4. Connect the white and brown wires to + terminal (24 V).
5. Connect the blue and black wires to - terminal (24 V).
DIMENSIONS (in mm)
