Siemens SITRANS LUT400 Operating Instructions Manual page 83

①
②
③
Initial Device Setup
Quick Start Parameter
Transducer
Temperature Source
Primary Measuring Device
(PMD)
Flow Exponent
Units
Low Calibration Point
High Calibration Point
Response Rate
Method of Flow Calculation Ratiometric
Maximum Head
Flowrate Units
Maximum Flow at 20 mA
Flowrate Decimal
Low Flow Cutoff
Continue with alarm setup below.
SITRANS LUT400
Operating Instructions, 07/2019, A5E33329501-AC
Head 0.6 m
High calibration 1.0 m
Low Calibration 1.6 m
Setting/ Value
XRS-5
TS-3
Exponential
1.522
m
1.6
1.0
Medium(1.0
m/min)
0.6 m
Cum/hr
1143
No Digits
0.00
Description
For best accuracy, an XRS-5 transducer should be
used in conjunction with the High Accuracy
SITRANS LUT440.
For best accuracy, a TS-3 external temperature
sensor is required.
Parshall Flumes are a type of exponential device.
Available from the PMD supplier data sheet.
Units corresponding to the head measurement.
The distance to the empty point or bottom of the
flume. This sets the 4 mA setpoint.
The distance to the Max. Head. This sets the 20 mA
setpoint.
Response rate is set to be faster than the fastest
rise in material level under typical operating condi-
tions. In this example, the rate is faster than the
Peak Time rate provided by the end user.
Used when the Max. Head and Max. Flow values
are provided.
Available from the PMD supplier data sheet.
Set per end user requirements.
Available from the PMD supplier data sheet.
For the purpose of this example, decimals are not
required.
This parameter stops the LUT440 from totalizing if
the head value corresponding to low flow is
reached. This prevents flow from being totalized
when the head level reaches the ineffective point of
the PMD. Refer to the PMD data sheets for ratings.
Commissioning
6.8 Application examples
81