AUX E&H Series Instrukcje Operacyjne Strona 19

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4 Operation
4.1 Operator interface
4.2 Display
LED indicators
Liquid crystal display
705
pH
R262
Setpoint
ENDRESS+HAUSER
LIQUISYS M
DISPLAY1.CDR
Liquid crystal display
for display of measured
values and onfiguration
data
4 main control keys for
calibration and instrument
configuration
Key for switching
between automatic /
manual operation
LED indicators for
limit contactor relay
(switching state)
LED indicator for
alarm function
Display of active
contact and key for
relay switching in
manual mode
Field for user labelling
Fig. 4.1
Operating elements
Liquisys M
Indication of current operating mode Auto(green LED) or Manual(yellow LED)
Indication for relay controlled Manualmode (red LED)
Indicates the state of relays 1 and 2
LED green:measured value within permissible limits, relay is inactive
LED red: measured value outside permissible limits, relay is active
Alarm indication e.g. for continuous limit violation, temperature sensor failure or system error
(see error list in chapter 7)
05
Setpoint
pH
R262
DISPLAY3.CDR
Measuring
mode indicator
(normal
operation)
Calibration mode
indicator
Setup mode
indicator
(configuration)
Error
indicator
In measuring mode:
Secondary measured value.
In setup / calibr. mode
e.g. setting value
In measuring mode:
Main measured value.
In setup / calibr. mode
e.g. parameter
Function coding display
Rel 3/4 state
indicators:
inactive active
Hold mode indicator
(current outputs reflect
last status)
For instrument with
communication:
Indicator to receive
messages.
Constantly visible in
Burst mode (with HART)
Electrode symbol
Temperature
offset
Manual
temperature
compensation
Automatic
temperature
compensation
Fig. 4.2 Liquid crystal display
PM253ED4.CHP
Liquisys M CPM 223 / 253 Operation
Endress+Hauser 17
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