NWWP92402100008 RSOIS Tower.pdf

NWS EHB 9-201 RSOIS Technical Manual

Installation and Setup 2-4 March 2005 Revision B

f. The Precision Digital Barometer (PDB) in the office must be located within 15 m (49.2 feet) cable length of the upper-air computer workstation to allow for direct data ingestion by the computer.

Table 2-1. RSOIS Installation Diagram Assembly List

Assembly Number Assembly Description 1 RSOIS Tower Assembly 2 Wind Sensor and Mounting Arm Assembly 3 Ground Electrodes 4 Lightning Rod Assembly 5 Temperature/Humidity Unit Assembly 6 Yagi Directional Antenna Assembly 7 RPU Enclosure Assembly 8 Concrete Pad

Figure 2-3. Diagram of RSOIS Installation

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Part Number: 1418N4SSD8

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Description N4X Wallmount Encl w/panel - 20 x 20 x 8 - 304 SS

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Additional Downloads CE Declaration

Size H x W x D 20 in x 20 in x 8 in (508 mm x 508 mm x 203 mm)

Shipping Weight 52 lbs (23.59 kg)

UNSPSC 39121324

UPC 623980384702

UL File # E65324

CSA Cert. # LR21001

REACH Compliant Yes (more info...)

RoHS Compliant Yes (more info...)

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MECHANICAL WIND SENSORS

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Wind Monitor Model 05103

The Wind Monitor is a high performance wind sensor. Rugged, corrosion-resistant construction makes it ideal for a wide range of wind measuring applications.

The wind speed sensor is a four blade helicoid propeller. Propeller rotation produces an AC sine wave voltage signal. The wind direction sensor is a rugged yet lightweight vane. Vane angle is sensed by a precision potentiometer.

Constructed of UV stabilized plastic with stainless steel and anodized aluminum fittings, the sensor mounts on standard 1 inch pipe. Model 05103V offers calibrated 0-5 VDC outputs, Model 05103L provides a calibrated 4-20 mA current signal for each channel.

Brochure 05103

Manual 05103L

Manual 05103V

Manual Replacement Parts

05103 05103L 05103V

Specifications:

Range:

0-100 m/s (224 mph), 0- 360° Accuracy:

Wind Speed: ±0.3 m/s (0.6 mph) or 1% of reading Wind Direction: ±3 ° Operating Temperature:

-50 to 50°C Threshold:

Propeller: 1.0 m/s (2.2 mph) Vane: 1.1 m/s (2.4 mph) Signal Output:

Wind speed: magnetically induced AC voltage, 3 pulses per revolution.

1800 rpm (90 Hz) = 8.8 m/s (19.7 mph) Wind direction: DC voltage from conductive plastic potentiometer − resistance 10K Ω, linearity 0.25%, life expectancy − 50 million revolutions Power Requirement:

Potentiometer excitation: 15 VDC maximum Dimensions:

37 cm (14.6 in) H x 55 cm (21.7 in) L, Propeller: 18 cm (7 in) dia.

Mounting: 34 mm (1.34 in) dia. (standard 1 inch pipe) Weight:

1.0 kg (2.2 lbs) Shipping weight:

2.3 kg (5 lbs)

MODEL 05103V 0-5 VDC outputs Power Requirement: 8-24 VDC (5 mA @ 12 VDC) Output Signals: 0-5.00 VDC full scale

MODEL 05103L 4-20 mA outputs Power Requirement: 8-30 VDC (40 mA max.)

Output Signals: 4-20 mA full scale

Ordering Information Model Price

WIND MONITOR 05103 $1048.00

WIND MONITOR 4-20 mA outputs 05103L $1362.00

WIND MONITOR 0-5 VDC outputs 05103V $1366.00

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The wind sensor must be mounted on a tower between 6.00 m (19.7 feet) and 10.00 m (32.8 feet) above the ground (see figure 2-3 and table 2-1). The downwind distance of the wind sensor from any obstruction must be at least 6 times the height of the obstruction. The siting of the wind sensor upwind of an obstruction must be twice the height of the structure. Wind equipment must be located outside this zone of influence.

The temperature/humidity sensor must be securely mounted on the tower between

1.25 m (4.10 feet) and 2.00 m (6.56 feet) above the grass covered ground. Stations with significant snow depth accumulations must mount the temperature/humidity sensor 1.25 m (4.10 feet) and 2.00 m (6.56 feet) above the greatest monthly average snow depth. An acceptable site is over level ground, freely exposed to sunshine and wind, and not shielded by or close to obstructions such as trees and buildings.