Siemens Treadmill LC 500 사용자 설명서

Page 46

SITRANS LC 500 – INSTRUCTION MANUAL

7ML19985GE01

The SITRANS LC 500 transmitter can be calibrated using HART, with a HART 

communicator

1

; a laptop running Simatic PDM, or with the Host system (DCS). The local 

circumstances determine the manner in which calibration takes place. If the 
circumstances allow the product to be brought to the 0% and 100% point level, calibration 
is simple. 

Examples of calibration using a Rosemount 275 hand-held communicator, fitted with the 

GENERIC device descriptor:

For situations where the level of the product can be easily adjusted to 0 and 100%.

1.

Switch on the 275 and request connection with the SITRANS LC 500.

a. Select: Online
b. Select: Device setup
c. Select: Diag service
d. Select: Calibration
e. Select: Apply values

(Display reads: Loop should be removed from automatic control. Select:  Ok)

f. Select: 4 mA 
g. Select:  Apply new 4 mA input

2.

Bring the level of the product to the level which corresponds with 4 mA.

a. Select: Read new value
b. Select:  Set as 4 mA value: the 4 mA point has now been set.
c. Select: 20 mA
d. Select:  Apply new 20 mA input

3.

Bring the level of the product to the level which corresponds with 20 mA.

a. Select:  Read new value
b. Select:  Set as 20 mA value: the 20 mA point has now been set.
c. Select: Exit

(Display reads: Loop may be returned to automatic control. Select:  Ok)

Calibration is complete.

1.

For a diagram showing how to connect the HART communicator, see 

 on page 32.

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