Liquid Controls HML210 IOM - LCMag - Manual (Page 29)

HML 210
29
MENU 1-SENSOR
(POS. 1.1) Nominal diameter of sensor [ND= XXXX]
FUNCTIONS DESCRIPTION
(description of the functions with access code< 3)
The following pages give a description of the most important functions and how they can be changed
or enabled/disabled by the user
MENU 1 - SENSOR
(POS. 1.8) Electrodes cleaning [El. Cleaning=MIN]
Selectable options: OFF, minimum, average and maximum. It is not recommended the use of this
function (let OFF) when the liquid has a conductivity less than 100µS/cm.
(POS. 1.9) Empty pipe threshold [E.P. thr.=XXX]
This value represents the threshold of measure block to zero in empty pipe condition; the span
function is 20-250. Since the sensibility of empty pipe detection could be changed by the liquid
conductivity, ground connections, type of lining, in case of needed it is possible to adjust manually
the preset threshold. It is recommended to check periodically its proper functioning. Value increasing
means sensibility decreasing.
(POS. 1.10) Autozero calibration
[Autozero cal.]
This function activates the zero calibration automatic system. To perform this operation, it is
necessary for the sensor to be full of liquid, and the liquid be perfectly still. Even minimal movement
of the liquid may affect the result, and consequently, the accuracy of the system. Once you are sure
the above conditions have been fulfilled (and the percentage flow rate value is stable) press long the
key and automatically activates the zeroing procedure, after which it is necessary to check that
the percentage value showed goes to zero, repeat the operation otherwise. When the value is stable
at zero, then press the key .
MENU 2 - SCALES
(POS. 2.1-2) Full scale n° 1-2 [Fs1-2= dm³/S X.XXXX]
The full scale is used to indicate to the maximum meter’s flow rate; a volume per time is required.
The full scale should be chosen carefully as it’s parameters are used for several other parameters
(Pls1-2, and 3 Measure). There are four fields to fill in order to set this parameter, from left to right:
1) volume unit of measure, 2) type of unit, 3) time unit of measure and 4) numeric value. The
selection is made by positioning the cursor on the field to modify. To change the type of unit of
measure (metric, British or American, mass or volume) the cursor has to be positioned on the symbol
“/” (field N. 2). When the nominal diameter is set to zero it is possible to modify only the numeric
field, since the unit of measure stays at m/sec. The following tables show the units of measure
available and the conversion factor by comparison with 1dm
3 and 1kg. The converter accepts any
kind of combination of units of measure satisfying both the following conditions:
‰
Numeric field value 99999
‰ 1/25 fs
max
numeric field value fs
max
.
Menu visualized on the converter (from 1 to 11)
Synthetic description of the function
Identification of the function (not visualized on display)
Converter request