Wika 232.36 Manual de usuario descargar pdf (Pagina 8)

2064246 07/2009 GB/D/F

WIKA Operating instructions pressure gauges Model 2 with 831 per ATEX

4. Switch contacts

Red set pointer

Adjustment

lock

Removable

adjustment key

Circuit Sensor type Model designation EC-type exami- WIKA-

(s. Ex-certific.) Fa. Pepperl & Fuchs nation certificate Model

Model 1 standard KFD2-SR2-Ex1 PTB 00 ATEX 2080 904.31

standard KFD2-SR2 Ex2 PTB 00 ATEX 2080 904.32

Model 2 standard KFA6-SR2-Ex1 PTB 00 ATEX 2081 904.28

standard KFA6-SR2-Ex2 PTB 00 ATEX 2081 904.29

SN-sensors KFD2-SH-Ex1 PTB 00 ATEX 2042 904.33

SN-sensors KHA6-SH-Ex1 PTB 00 ATEX 2043 904.30

The permissible limits of Ui, Ii and Pi for the intrinsically safe supply circuits

depend on the sensor type. They can be taken from the corresponding EC-type

examination certificates. (The sensor type is stated on the connection plate of

the pressure gauge.)

Suitable switch amplifiers are e.g.:

Electromagnetic compatibility

EMC to EN 60 947-5-2.

The instruments are to be protected against strong electromagnetic fields.

Adjusting red set pointers

The setting of the set point is achieved using the adjustment lock in the window

with the aid of the adjustment key (part of the scope of supply; found in

standard instruments on the side of the terminal box).

The set point indicators for the switch contacts are freely adjustable over the

full scale range. For reasons of switching accuracy and long life of the mechani-

cal measuring system, the switching points should be between 10 % and 90 %

of the measuring range.

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Wika 232.36 Manual de usuario Pagina 8