A5E33329501 SITRANS LUT400 (HART) – OPERATING INSTRUCTIONS Page 63
mmmmm
General Operation
General Operation
This chapter provides details on the general operation and functionality of the SITRANS
LUT400. For instructions on the use of the device LCD and local push buttons, refer to
The LCD
Display
on page 34.
Starting measurement
The SITRANS LUT400 is a single point device. The device starts in LEVEL mode with a
preset of no transducer and a low calibration point of 60 meters. Change the following
common parameters to reflect your application.
Measurement conditions
The following information will help you configure your SITRANS LUT400 for optimal
performance and reliability.
Response Rate
The response rate of the device influences the measurement reliability. Use the slowest
rate possible with the application requirements.
Dimensions
Dimensions of the vessel, wet well, or reservoir (other than low and high calibration
points) are only important if you require volume readings. In this case, all dimensions are
used to calculate the volume value in terms of level. They are also used to calculate
pumped volume.
Fail-safe
The fail-safe parameters ensure that the devices controlled by the SITRANS LUT400
default to an appropriate state when a valid level reading is not available. (See list of
faults that result in fail-safe in
General Fault Codes
on page 233.)
Parameter Sample Value
2.1.2. Sensor Mode
LEVEL
Response Rate
(set via
QS Level
on page 39)
MEDIUM
2.1.6. Transducer
XPS-15
2.1.1. Units
M
2.2.1. Low Calibration Point
12
2.2.2. High Calibration Point
2
Note: Changes to fill and empty rate parameters can override Response Rate
setting. See “Response Rate” on page 42.
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