Promag CON-485 Series Informações Técnicas descarregar pdf (Página 19)

Proline Promag 50W, 53W

Endress+Hauser 19

Length of connecting cable Permissible cable length Lmax depends on the conductivity of the medium. A minimum conductivity of

20 µS/cm is required for measuring demineralized water.

F06-5xxxxxxx-05-xx-xx-xx-006

Gray shaded area = permissible range for medium conductivity

Lmax = length of connecting cable in [m]

Medium conductivity in [

S/cm]

In order to ensure measuring accuracy, moreover, comply with the following instructions when installing the

remote version:

• Secure the cable run or route the cable in a conduit. Movement of the cable can falsify the measuring signal,

particularly if the conductivity of the medium is low.

• Route the cable well clear of electrical machines and switching elements.

• Ensure potential equalisation between sensor and transmitter, if necessary.

Environment

Ambient temperature Transmitter:

• Standard: –20...+60 °C

• Optional: –40...+60 °C

Note!

At ambient temperatures below –20 °C the readability of the display may be impaired.

Sensor:

• Flange material carbon steel: –10...+60 °C

• Flange material stainless steel: –40...+60 °C

Caution!

It is not allowed to use the device beyond the min. and max. lining specified temperature values

(→ “Medium temperature range”).

Note the following points:

• Install the device at a shady location. Avoid direct sunlight, particularly in warm climatic regions.

• If both fluid and ambient temperatures are high, install the transmitter at a remote location from the sensor

(→ “Medium temperature range”).

Storage temperature • The storage temperature corresponds to the ambient temperature range of the transmitter and sensor (see

“Ambient temperature”).

• The measuring device must be protected against direct sunlight during storage in order to avoid unacceptably

high surface temperatures.

• Choose a storage location where moisture does not collect in the measuring device. This will help prevent

fungus and bacteria infestation which can damage the liner.

• Do not remove the protective plates or caps on the process connections until you are ready to install the

device.

200

100

10 100 200

[m]

[ S/cm]µ

max

1 2 ... 14 15 16 17 18 19 20 21 22 23 24 ... 39 40

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