Siemens sitrans PROBE LU User Manual

Page 20 SITRANS Probe LU (PROFIBUS PA) – INSTRUCTION MANUAL 7ML19985JB02
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Startup
Performing calibration via PROFIBUS PA
To use PROFIBUS PA, you will need a PC configuration tool: we recommend
SIMATIC PDM. Please consult the operating instructions or online help for details on
using SIMATIC PDM. (An Application Guide
SMPI PROFIBUS PA instruments and
SIMATIC PDM
can be downloaded from the Probe LU product page of our website, at:
https://pia.khe.siemens.com/index.asp?Nr=11157)
Changing parameter settings
• First launch SIMATIC PDM, connect to SITRANS Probe LU, and upload data from the
device.
• Adjust parameter values in the parameter view field (right side of screen).
• After adjusting the value, press Enter (the status fields read Changed).
• When you have completed the adjustments, open the Device menu, download data
to the device, and save parameter settings offline (the status fields go blank).
Calibration
Only four settings are required for a Quick Setup:
• High Calibration Point and High Level Point
• Low Calibration Point and Low Level Point
1
23
4
1.
Default 0. For more details, see page 82.
2.
The value produced by the echo processing, representing the distance from the
Sensor Reference Point to the target.
3.
Level Value: the level measured in level units.
4.
Distance is referenced from the tank reference level to the target (see page 58 for
details on SV2 and SV3).
High Level
Point
(default: 100%)
Sensor Reference
Point
(transducer face)
Sensor Value
2
Low Level
Point
(default: 0%)
Level
3
Level Offset
1
Secondary Value 1
Low Calibration
Point
Tank reference
point
High
Calibration
Point
Far
Range
N
e
a
r
R
a
n
g
e
Distance
4
(SV2 or SV3)
Sensor Offset
1

Siemens sitrans PROBE LU Specifications

General

Measuring Principle	Ultrasonic
Communication	HART
Output	4 to 20 mA
Power Supply	12 to 30 V DC
Process Temperature	-40 to 80 °C
Enclosure Rating	IP68
Material	PVDF
Ambient Temperature	-40 to 70 °C
Measurement Range	0.25 to 12 m (0.8 to 39 ft)