User Manual & Datasheet V 1.2
22.3
Normal Calibration
Note:
Perform the Normal Calibration of the level in-
strument only in a Safe Zone (Zone 2).
22.3.1 Calibration for Non-conductive Material
This calibration is also known as
Air Calibration
and
Cal-
ibration without material
. It should be done without the
application material (i.e only air, no material).
It is recommended to first calibrate the Casper in a more
convenient setup in Safe Zone(Zone 2) before installing
it in an application tank.
To carry out calibration process, please follow the steps
mentioned below:
•
Prepare a transparent Metallic Test Tank as shown in
the following Figure 50.
Figure 50: Metallic Test Tank
•
Refer to given Figure 49 for Electrical Connections to
power up and connect the device.
•
Dip the Casper into test tank as shown in Figure 51.
Calibration in empty
tank (without material)
Figure 51: Calibration without Material
•
Unscrew the cover and ensure that all DIP switches
are in the OPEN position as shown in Figure 52. Make
sure that the status LED is not blinking for error.
1
2
CALIBRATE
FAILSAFE
3
4
UNCOVER
COVER
Figure 52: DIP Switch
•
To start the calibration process, set the CALIBRATE
switch to CLOSE (Opposite of OPEN in a DIP switch)
position as shown in Figure 53.
•
Press and hold ENTER key. The STATUS LED will
glow in RED color.
•
Release the ENTER key and set the CALIBRATE
switch back to OPEN position.
OPEN
1
2
ENTER
CALIBRATE
FAILSAFE
CASPER
STATUS
LED
RED
GREEN
3
4
UNCOVER
COVER
NAMUR
Figure 53: Calibration Switch Position
OPEN
1
2
ENTER
CALIBRATE
FAILSAFE
CASPER
STATUS
LED
RED
GREEN
3
4
UNCOVER
COVER
NAMUR
Figure 54: Setting Calibration
OPEN
1
2
ENTER
CALIBRATE
FAILSAFE
CASPER
STATUS
LED
RED
GREEN
3
4
UNCOVER
COVER
NAMUR
Figure 55: Saving Calibration
•
Air calibration is done.
•
Proceed to Section Installation Guidelines for installing
the product in an application tank.
22.3.2 Calibration for Conductive Material
This calibration is also known as
Calibration with ma-
terial
. For applications using conductive materials (water,
acid based pastes etc.), Casper needs to be calibrated with
an application material. This will make the instrument spe-
cific to the application material i.e. if the application material
is changed; calibration should be repeated.
It is recommended to first calibrate the Casper in a more
convenient setup in Safe Zone(Zone 2) before installing
it in the application tank.
To carry out calibration process, please follow the steps
mentioned below:
•
Prepare a transparent Metallic Test Tank as shown in
the following Figure 50.
•
Refer to given Figure 49 for Electrical Connections to
power up and connect the device.
•
Dip the Casper in test tank & fill the tank with the ap-
plication material such that the Casper’s probe is com-
pletely covered with the material.
•
Unscrew the cover and make sure that all DIP switches
are in the OPEN position as shown in Figure 52. En-
sure that the STATUS LED is not blinking for error.
Sapcon Instruments Pvt.Ltd.
®
20