Calibration Using Hart - Siemens SITRANS LC500 Operating Instructions Manual

Calibration using HART

The SITRANS LC500 transmitter can be calibrated using HART, with a HART
1
communicator ; 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.
Notes:
• Use the arrow keys, up, down, forward and back, to navigate within the menus.
• Use the back arrow to return to previous screens.
Examples of calibration using a Rosemount 275 hand-held communicator, fitted with the
GENERIC device descriptor:
Example 1
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 LC500.
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
configuration with HART
Page 46 SITRANS LC500 – OPERATING INSTRUCTIONS
on page 34.
Typical PLC
7ML19985GE04