User manual - RATEMETER STI-94
“PrEc”
-
precision of result displaying. There are available settings from
“0”
(precision of 1
unit) to
“0.00000”
(precision with 5 digits after decimal point)
“unit”
- The unit of rotational speed used for recalculation of current measurement can be
set to:
“SEC”
- result expressed in revolutions / second
“min”
- result expressed in revolutions / minute
“hour”
- result expressed in revolutions / hour
“F or P”
- kind of value shown on the display:
“Freq”
- frequency (rotational speed),
“PEriod”
- period (time per one revolution).
“mUL”
- multiplication coefficient. The value by which current measurement result is
multiply to recalculate it to desired unit (e.g. linear speed); can be set in range 0 to
999 999, value
0 is interpreted as 1 000 000.
“div”
- divide coefficient. The value by which current measurement result is divided to
recalculate it to desired unit (e.g. linear speed); can be set in range 0 to 999 999,
value
0 is interpreted as 1 000 000.
Parameters
“mul”
and
“div”
can be used to rescale of measurement value - setting
proper values recalculation of rotational speed to linear speed can be done automatically.
“ZEro t”
- maximum delay time of successive revolution. This parameter is defined with 0.1
second precision, in range 0 ÷ 39.9. If delay between successive revolutions are
longer than defined value, device displays „0” instead of current measurement.
If parameter
“ZEro t”
is set to value lower than parameter
“mEAS t”
, the
“mEAS t”
value is used as maximum delay to next revolution time
.
Expression „successive revolution” means the number of input pulses equals to
value of parameter
“PULSen”
.
“mEAS t”
- minimum
measurement window
width. The ”
measurement window
” means the
time period after which counted pulses are recalculated and displayed, and it is
similar to refresh rate. This parameter can be set with 0.1 sec. resolution in range
0 ÷ 19.9 sec.
If time delays between successive pulses are longer than
“mEAS t”
time, then
measurement window width is automatically fitted to input frequency.
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