Siemens SITRANS LU150 User Manual

Operating
6.7 Speed of response
SITRANS LU150
Operating Instructions, 03/2016, A5E34590123-AB
29
6.7
Speed of response
The speed of response adjustment allows the user to collectively set a number of operating
parameters.
measurement response:
is the limit to which the SITRANS LU150 will be
able to keep up
with rates of change. If the unit's measurement cannot keep up
with the rate of level change, set the adjustment from '1' to '2'. If it
still cannot keep up with the rate of level change, set the adjus
t-
ment option to '3'. Avoid choosing an
option that is too fast for your
application.
agitator discrimination:
discriminates between agitator blades in motion, and the material
(target) surface.
filter:
discriminates between false echoes from acoustical and electr
ical
noise, and the material (target) surface.
fail
-safe timer:
establishes the 'Waiting' period from the time a loss of echo or
operating fault condition starts, until the fail
-safe default is effect-
ed. Adjusting the speed of response will set the fail
-safe timer to
the default values in the chart. If a different response is required,
adjust the ‘FSt’ option (Fail-safe timer (Page 31)).
SP
measurement response
agitator discrimination
filter
fail-safe timer
1* 1 m/min (3.3 ft/min) on on 10 minutes
2
5 m/min (16.4 ft/min)
on
on
3 minutes
3 immediate off off 3 minutes
4
0.03 m/min (0.1 ft/min)
on
on
10 minutes
* = factory setting

Siemens SITRANS LU150 Specifications

General

Brand	Siemens
Model	SITRANS LU150
Category	Transmitter
Language	English