Endress+Hauser promag 30, Руководство по эксплуатации

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5.3 Local display
With the Promag 30 local display important variables can be read off and controlled
directly at the measuring point:
•
Flow rate and/or totaliser value.
•
Technical units (SI or US).
•
Process conditions (creep. partially empty pipe).
•
Error messages.
It is possible to access, activate, and set various functions in sequence with the help
of the three operating keys on the local display.
1. Loosen Allen screw (3 mm) of the safety grip. Unscrew the cover of the
electronics compartment.
2. The keys may now be operated by pressing with a thin (non-conductive) pin.
A switching cycle takes about 0.5...0.8 seconds.
3. Firmly screw back the cover of the electronics compartment to the transmitter
housing once the settings have been entered. Firmly tighten the Allen screw of the
safety grip.
Jumper
Description
⇒
see next page:
“Additional Information”
Set
This key is used for carrying out the following
operations within the appropriate function:
•
Selecting the technical units
•
Switching on/off the EPD (Empty Pipe Detection)
•
Starting the empty/full pipe adjustment
(for Empty Pipe Detection)
ba0
08y
37
LCD, 8-character
All measured values, operating and status
indications are shown here.
11 Display segments
The appropriate segments serve to provide
clear information on technical units and
current instrument function:
•
Current technical unit
•
Creep too low (Low flow cut-off)
•
Velocity of fluid > 12.5 m/s
•
System fault (error)
•
Partially filled pipe (Empty Pipe Detection)
Totalizer reset
This key is used for resetting totalizer to “0”
(in the “
tot
” function only).
Display function
This key is used for selecting the function
required (= display mode). By continuously
pressing the key, the individual functions are
called up automatically on at a time.
Fig. 40
Danger of electrical shock!
With the housing cover removed, protection against accidental contact
is no longer present. Components with high voltages are exposed below the local
display. When programming according to section 5.3, avoid any contact with the
electronic components which lie below the local display, and do not use any
electrically conductive object to depress the programming keys.
5. Operation and Commissioning Promag 30
42 Hauser