A5E33329501 SITRANS LUT400 (HART) – OPERATING INSTRUCTIONS Page 191
mmmmm
Parameters
2.15.1. Primary Measuring Device (PMD)
The type of primary measuring device (PMD) used.
The LUT400 is pre-programmed for common PMD flow calculations. If your
PMD is not listed, use a Universal Flow calculation. See
Universal calculation
support
on page 116.
2.15.2. Auto Zero Head
Calibrates 2.15.3.5.Zero Head Offset (defined in 2.1.1.Units) based on actual
head measurements
.
Use this parameter when the reported head is consistently high or low by a
fixed amount.
Before using this feature, verify the following parameters are correct:
•
2.2.1.Low Calibration Point
•
2.12.1.2.Process Temperature
With HEAD steady...
a) Measure the actual head (e.g. with a tape measure or solid rule)
b) Enter the actual head value
The deviation between the entered head value and the calibrated value, is
stored in
2.15.3.5.Zero Head Offset
.
Values
*
OFF (no calculation)
EXPONENTIAL DEVICES
RECTANGULAR FLUME BS-3680
ROUND NOSE HORIZONTAL CR. BS-3680
TRAPEZOIDAL FLUME BS-3680
U-FLUME BS-3680
FINITE CREST WEIR BS-3680
THIN PLATE RECT. WEIR BS-3680
THIN PLATE V-NOTCH WEIR BS-3680
RECT. WEIR CONTRACTED
ROUND PIPE
PALMER BOWLUS FLUME
H-FLUME
UNIVERSAL HEAD FLOW
Values
Range: -60.000 to 60.000
Default: 0.000
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