WIKA PGW23.100.11 Betriebsanleitung Seite 20

6. Commissioning, operation
Respect the specific sending characteristic of the antenna (→ see chapter "Notes on the
sending characteristic").
Requirements for the installation point
If the line to the measuring instrument is not adequately stable, an instrument mounting
EN
bracket should be used for fastening. If vibrations cannot be avoided by means of suitable
installation, filled instruments should be used. The instruments should be protected
against coarse dirt and wide fluctuations in ambient temperature.
The ambient and medium temperatures must never be outside the permissible operating
conditions (→ see chapter 10 "Specifications"). The temperature at the case of the
instrument must not exceed a value of 60 °C [140 °F]. The limit value at the instrument
must be fulfilled by taking appropriate measures, e.g. mounting with a distance from
large, hot surfaces or vessels. If necessary, the connection must be extended with a
pipeline or provided with thermal insulation.
Notes on the sending characteristic
To achieve the best possible sending quality, the radio link from the antenna to the
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receiving gateway should be as free from barriers as possible.
The signal strength is from slightly to severely affected by concrete walls, metallic
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shielding, enclosures and hilly landscapes.
For the best possible sending power of the antenna, no metallic objects, e.g. pipes,
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may be closer than 10 cm to the antenna.
With installation, pay attention to the sending characteristic of the instrument as well
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as the information from the following figure:
y
x
z
20 WIKA operating instructions, model PGW23.100.11
Strong signal
Weak signal