User Manual & Datasheet V 1.2
Note:
Power OFF the level instrument before starting
the calibration process.
To carry out calibration process, please follow the steps
mentioned below:
•
Ensure that all DIP switches are in the OPEN position.
Figure 62: Remote High Calibration Setup
•
Set the CALIBRATE and COVER switch to CLOSE
(Opposite of OPEN in a DIP switch) position as shown
in Figure 57.
•
Close the cover of housing properly before powering
on the instrument.
•
Power ON the instrument and wait for a minimum of 60
seconds.
ENTER
STATUS
LED
RED
GREEN
CASPER
ON
DIP
OPEN
1
2
3
4
COVER
UNCOVER
CALIBRATE
FAILSAFE
NAMUR
60 Seconds
Figure 63: High Calibration Power ON Condition
•
Power OFF the instrument.
•
Open the housing cover and set the CALIBRATE and
COVER switch back to OPEN position as shown in Fig-
ure 59.
•
Close the cover of housing properly.
•
Power ON the instrument.
•
High calibration is completed.
23
Output Current Configuration
Note:
Perform the operation of Output Current Con-
figuration of the level instrument only in a Safe Zone
(Zone 2).
Namur isolation barriers as specified in the Table 9 tend
to have variation in their "Functional Operating Voltage".
Change to the "Functional Operating Voltage" may cause
a change in power consumption for Casper Namur level
sensor. The output current can be configured is required as
per the procedure mentioned below:
If the output current of alarm condition exceeds
or goes below the specified limit only then use Low
Current Configuration or High Current Configuration
as per the current value.
STATUS
OUTPUT CURRENT
Normal Condition
≤
1.2mA
Alarm Condition
≥
2.1mA and <3mA
Table 9: Operating Conditions of Output Current
23.1
Low Current Configuration
If the output current of alarm condition is exceed over
3mA
then the instrument does not operate properly which
results instrument will not be able to switch. To resolve this
condition, the value of output current should be adjusted by
setting Low Current Configuration. To set this mode please
follow the procedure given below:
•
Set the COVER and UNCOVER switch to CLOSE po-
sition.
OPEN
1
2
ENTER
CALIBRATE
FAILSAFE
CASPER
STATUS
LED
RED
GREEN
3
4
UNCOVER
COVER
NAMUR
Figure 64: Switch Position Low Current Configuration
•
Press and Hold the ENTER key, RED Status LED will
start blinking.
OPEN
1
2
ENTER
CALIBRATE
FAILSAFE
CASPER
STATUS
LED
RED
GREEN
3
4
UNCOVER
COVER
NAMUR
Figure 65: Setting of Low Current Configuration
•
Blink the RED LED 2 times and release the ENTER
key.
•
Low Current Configuration mode is set.
23.2
High Current Configuration
If the output current of alarm condition goes below
2.1mA
then the instrument does not operate properly which results
instrument will not be able to switch. To resolve this condi-
tion, the value of output current should be adjusted by set-
ting High Current Configuration.
Indication of this mode is
Sapcon Instruments Pvt.Ltd.
®
22
