Burkert Type 8055 - Manual (Page 28)

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When a mass unit of measure is set, the specific gravity function is automatically enabled by the
system. The units of measure of time may be chosen among the values:
s=second,m=minute,h=hour,d= day.
(POS. 2.3) Unit of measure and number of decimal totalizes [UM.tot:dm³X.XXX]
Setting the unit of measure and number of decimals for visualized the totalizes or the volumes to
batch. For set the unit of measure, position the cursor on field of the actual unit of measure; For set
the type of unit, position the cursor on the blank space between the unit of measure and the numeric
value; For set the number of decimal totalizes position the cursor on numeric field and choose one of
the possible combinations: 1000-01.00-001.0-00001.
*(POS.2.4-2.5) Pulse value channel 1 and unit of measure of tot. [IMP1-2=dm³X.XXXXX]
Setting of the pulse volume corresponding to channel 1-2 and of the totalizers measure units. There
are three fields to fill in to set this parameter, from left to right: 1) measure unit, 2) unit type and 3)
numeric value. The selection is performed by positioning the cursor on the field to be modified. To
change the unit type (metric, British or American, mass or volume) just position the cursor on the
blank space between the measure unit and the numeric value. When the nominal diameter is set to
zero it is possible to modify only the numeric field since the measure unit stays at meter (m) or feet
(ft). The possible measure units are those above described
(POS.2.6-2-7) Pulse duration channel 1-2
[TPUL1-2=msXXXX.XX]
Setting of the duration of the pulse generated on channel 1-2. Its value is expressed in milliseconds
and has to be between 0.4 and 9999.99. When the high frequency output is present, then the
minimum value can go down to 0.04 milliseconds.
ATTENTION: since the instrument cannot detect which type of device it is connected to, it is up to
the user to verify the set pulse duration is compatible with the external device processing such pulses.
If, for example, an electro-mechanical pulse counter is connected, then two kind of problems may
occur: if the pulse is too long than the coil may burn or, if it is too short, the counter may not be able
to count and eventually even cause the damaging of the output itself.
MENU 3.MEASURE
(POS. 3.1) Time constant [TCONST=s XXXX.X]
This parameter affects the integrating filter making the instrument response quicker or slower,
according to the set value. A higher value corresponds to a more stable but slower measure, a
smaller value the opposite. The most common values are from 1 to 5 seconds. The valid range of
value it’s from 0 (integral filter disabled) to 6000.0 seconds. The following diagram shows the
response of the instrument for a flow rate variation from 0 to 100% within the T time constant period
(POS. 3.3) Acceleration threshold
Acceleration threshold set. The acceleration threshold stands for the limit beyond which a flow rate
variation determines an immediate response at the output, without being filtered by the time
constant. This system allows the instrument to have an immediate response in case of big variations
of the flow rate, filtering (and delaying) the response to small variations. The result of that is a very
stable measure, ready to follow the process. The value is set as percentage of the full scale value
from 0 to 125%. If such a value is set to zero any flow rate variation bigger than 0.5% of the full
scale value will immediately affect the outputs. The following diagram shows the instrument response
in two cases: a flow rate variation from 0 to 10% completely absorbed by the time constant effect
and a variation form 10% to 100% exceeding the acceleration threshold and then immediately sent
cm 3 Cubic centimetre
ml Millilitre
l Liter
dm 3 Cubic decimeter
dal Decalitre
hl Hectolitre
m 3 Cubic metre
in 3 Cubic inch
Gal American gallon
GAL British gallon
ft 3 Cubic foot
Bbl Standard barrel
BBL Oil barrel
yd 3 Cubic yard
kgl KAmerican gallon
KGL KBritish gallon
G Gram
Kg Kilogram
T Ton
Oz Ounce
Lb Pound
Ton short tons