Sensor Mode; Current Output Function - Siemens Sitrans LR200 Instruction Manual

Sensor Mode

This parameter controls the input. Depending on the reference point used, the mA output
reflects either Level, Space, or Distance. By default Sensor Mode is set to Level.
Operation
NO
SERVICE
LEVEL
SPACE
DISTANCE
a)
Fail-safe Mode
See
You also have the option to put the device out of service, in which case the device
defaults to Fail-safe mode, and the reported level depends on the device type. A standard
device reports the last valid reading, and a NAMUR NE 43-compliant device reports the
user-defined value for Material Level (3.58 mA by default).
Sensor
Level
reference
point
High
Cal.
Pt.
Low
Cal.
Pt

Current Output Function

Current Output Function (2.6.1.) controls the output and applies any relevant scaling. By
default it is set to Level. Other options are Space, Distance, and Volume. (The device can
carry out a volume calculation only after a vessel shape has been specified.)
When a volume application type is chosen, Sensor Mode remains as Level and the mA
Output is automatically converted to Volume.
To view the mA reading in the secondary region of the LCD, press
.
programmer
7ML19985JP02
Description
Measurement and associated loop
current not being updated. Device
defaults to Fail-safe mode
Distance to material surface
on page 130
.
Space
100%
20 mA
Level
0%
4 mA
SITRANS LR200 (HART) – INSTRUCTION MANUAL
Reference point
a)
.
Low Calibration Point (pro-
cess empty level)
High Calibration Point (pro-
cess full level)
Sensor Reference Point
Distance
0%
4 mA
Space
100%
20 mA
0%
4 mA
Distance
100%
20 mA
on the handheld
Page 129