Dräger PEX 3000, Руководство пользователя, Страница: 34 / 100

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Dräger PEX 3000
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Operation
Handling the spring terminal clamps in the transmitter
1. Insert the screwdriver (width 3 mm) or supplied special tool (see also order
list, (see "Order list", page 48)) into the terminal.
2. Push the spring down. This opens the lower part of the terminal. Insert the
stripped cable end or ferrule (if necessary) into the lower part.
3. Remove the screwdriver or special tool from the upper part. The electrical
connection is established by the force of the spring.
CAUTION
The spring terminal clamps are connected to the 4 to 20 mA converter.
Improper handling might damage the spring terminal clamps so that the
complete converter would have to be replaced.
4.3 Menu structure
The PEX 3000 transmitter features a two-digit 7-segment display and two scroll
keys (key
▲ and key ▼ ) to navigate through the described menus. Pressing
both scroll keys simultaneously results in an OK function and is indicated as
"keys (
▲ + ▼ )" in the following. The ▼ key is also marked with an M to indicate
that you can press this key to go from measuring mode to the calibration menu
or the maintenance menu. Both these menus can only be exited using the
▲
key. Display and scroll keys are accessible after opening the transmitter’s
housing (see figure).
WARNING
Dust explosion protection is not ensured after having opened the transmitter’s
housing. The Ex area has to be temporarily de-classified, if necessary!
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