Technical Specifications - CARLO GAVAZZI SHOWEAGPS Datos Técnicos E Instrucciones De Instalación

EN
1. Description
The SHOWEAGPS Weather Station measures temperature, wind speed and bright-
ness (eastern, southern and western sun) and recognizes precipitation.
The SHOWEAGPS receives the UTC signals (Universal Time Coordinated) as well as
the site coordinates via an integrated GPS receiver. The direction of the sun (azimuth)
as well as its height (elevation) are calculated and indicated, too.
Data are usually output after a request made by the Modbus master via a 2-wire RS485
connection. Furthermore, the weather station can communicate with a PC, an SPS or
an MC.
The weather station has four ports; the data output is made via the terminals A and B.
Here, an IC is used that can operate with up to 128 participants on one bus (TI
SN65LBC184D).
Terminals 1 and 2 are provided for the power supply (24 V DC). The ports are not pro-
tected against reverse polarity. If they are wrongly connected, the interface modules
will be destroyed.
Functions:
• Brightness measurement with three separate sensors for east, south and
west. Recognition of twilight/dawn with special filters
• Wind measurement: The wind strength measurement takes place
electronically and thus noiselessly and reliably, even during hail, snow and
sub-zero temperatures. Even turbulent air and anabatic winds in the vicinity of
the weather station are recorded
• Temperature measurement
• Heated precipitation sensor (1.2 watts): No false reports as a result of fog or
dew. Dries quickly after precipitation has stopped
• Integrated GPS receiver. Output of UTC (Universal Time Coordinated), position
(degree of longitude and latitude) and position of the sun (azimuth, elevation)

1.1. Technical specifications

Housing
Colour
Mounting
Protection category
Dimensions
Weight
Ambient temperature
Operating voltage
Cable cross-section
Current
Data output
Protocol
SHOWEAGPS Weather Station • Version: 28.10.2013 • Technical changes reserved. Errors reserved.
4
Plastic material
White / translucent
On-wall
IP 44
approx. 96 × 77 × 118 (W × H × D, mm)
approx. 160 g
Operation -30...+50°C, Storage -30...+70°C
12...40 V DC (12...28 V AC)
Massive conductors of up to 0.8 mm²
max. 80 mA, residual ripple 10%
RS485 2-wire
Modbus RTU
Description