Raco Verbatim, Owner'S Manual

Page: 100 / 246

Analog Signal Input
B-6 Verbatim Owner's Manual
which will automatically accept the present moment signal value as the low
input signal value, rather than having to enter the value shown as X.XXXX
above. Then, enter:
5 ZZ 2 YYYY.YYYY ENTER
where YYYY.YYYY is the corresponding low-end physical value which
you observe in real-world terms.
At another time, when the signal or physical variable is toward the high end of
the scale, enter the following pair of codes:
5 ZZ 3 POINT ENTER
which accepts the present signal level as corresponding to the high-end physical
value which you enter as:
5 ZZ 4 YYYY.YYYY ENTER
Example:
It may already be known from your system’s specification that for channel 6, a
low-end signal of 4 milliamps corresponds to a desired spoken value of 34.5
feet of tank water level. In such a case, you would use the System
Specifications Method to enter:
K
for 4 milliamps
5 06 1 4 ENTER
K
for a spoken reading of 20.5
5 06 2 20.5 ENTER
K
for 20 milliamps
5 06 3 20 ENTER
K
for a spoken reading of 34.6
5 06 4 34.6 ENTER
Then, suppose with the system in operation, you observe that the tank level is
31.7 feet, but the Verbatim reports a value of 31.45 feet. The discrepancy will
most likely be due to a discrepancy of the sensor’s actual output versus the
theoretical system specification. Regardless, to correct for it, keeping in mind
that the signal is presently near the high end of the scale, you would use the
Real-World Method, entering:
K
To reference the present signal level
5 06 3 POINT ENTER
K
To recalibrate 31.7 as the corresponding spoken value
5 06 4 31.7 ENTER