Chauvin Arnoux C.A 1725 Manual De Instrucciones página 48

To return the decimal point to the display unit, simply press the
on whether the decimal point exited on the left or right, respectively. Because there are five possible
positions of the decimal point, the resolution of the programming may be finer than the resolution of the
measurement. When this is the case, the crossing of the alarm thresholds is still determined according
to the true measurement resolution.
To exit from the programming mode, and to validate:
Either press the
- Or switch to another programming function by pressing
- Or turn the switch to any other position except "OFF". The device then returns to measurement
mode (switching to "OFF" disables validation and entails the loss of the current values; the
values previously recorded remain valid).
The information contained in memory is read back in the same way as it is programmed, except that
the ,
Alarm thresholds (C.A 1727 only)
Two thresholds can be set. To program these values, press the
mode.
A first press on the
A second press on the
prigram the high threshold (HI AL).
When a threshold is programmed and the ALARM function is activated, the corresponding symbol
appears on the display in measurement mode and the measured value is compared to this value at all
times. An overshoot of the threshold results in the display of the corresponding symbol and activates
the buzzer (see the use of this function in the "ALARM" section).
When one or both alarm thresholds have been programmed and activated, it or they appear on the
bargraph in reverse video (with respect to the measurement): black if the deviation is below the
threshold, white if the deviation is above the alarm threshold, flashing (4 Hz) if the measurement is
equal to the threshold value.
Coefficient K (C.A 1727 only)
Coefficient K is a multiplier applied to the raw measurement value in order to obtain a display that can
be used as is.
Examples:
- Programming of a gearbox ratio. This makes it possible to display, directly, the output speed of
a reduction gear while measuring the input speed.
- Flow measurements. A flow meter delivers one pulse every 2 m3. Setting a coefficient of K =
2 makes the reading in Hz equal to the flow rate in m3 per second. The COUNT function delivers,
in addition, the total volume that has flowed through the pipe.
Pressing the key in the PRGM mode lets you program the value of coefficient K.
When a coefficient other than the initial value has been programmed, the symbol K appears on the
display unit in the measurement mode. The digital display and the bargraph then both apply multiplier
coefficient K.
. You leave the programming mode and PRGM goes off.
, and
key results in the display of
key validates the low threshold (LO AL), displays
48
or
,
keys must not be used.
key when in programming
and lets you program the low threshold.
key, depending
or key.
and lets you