Siemens Sitrans 사용자 설명서

Page 40

SITRANS LC 500 – INSTRUCTION MANUAL

7ML19985GE01

Capacitance measurement systems require the instrument to be calibrated for a 

particular application. Two methods of calibration are available:

• push-button (for instructions, see page 43).
• HART (for instructions, see page 46).

We strongly recommend you read the full manual to use your device to its fullest 

potential. However, if it is possible to adjust the level of the tank to the 0% and 100% 
levels, you can use the quick start sequence below to calibrate the instrument and get 
started.

•

Change over from Menu LEVEL 0 to Menu LEVEL 1 is only possible at position 0, 
from menu item 00 to 10 or vice-versa. (See page 42 for detailed instructions.)

•

For a table showing all the combinations of rotary switch positions and button 
presses used to carry out different functions, see page 41.

•

For a detailed description of each menu item, see Appendix A, page 54.

For instruments without a stilling well, the 0% setting needs to be calibrated after the 
device is installed, and with the tank/vessel empty. Calibration is also sometimes neces-
sary after installing a SITRANS LC 500 fitted with a stilling well, although in most cases 
the 0% setting is calibrated at the factory. 

Set value for 0% (LRV): units must be pF (Menu 01 must read Pv = 0).
a

Bring the product level to the height that corresponds to 0%.

b

Turn the rotary switch to E (Empty).

c

Press both buttons and hold for about 1 second: the 0% point is now set.

Set value for 0% (LRV): units must be pF (Menu 01 must read Pv = 0).
a

Raise the product level to the height that corresponds to 100%.

b

Turn the rotary switch to F (Full).

c

Press both buttons and hold for about 1 second: the 100% point is now set.

Turn the rotary switch to 0. The LCD displays the actual pF reading.