ADS Environmental Services Spider QR 775010 A0 - Manual (Page 44)

ADS Environmental Services ADS Spider User Manual
Page 42
Calibrating Counter Inputs (if present)
You can calibrate Counter Inputs in two ways:
1. Scaling
2. Pre-setting the counter to a particular reading
Scaling is useful to make the counters read engineering values. For
example, the water meter may be producing one pulse per 5 gallons
of water flow. Hence, to make the counter register in gallons, you
would set the Scaler to 5.
NOTE: A Spider counts internally from 0 to 99,999 before it
“
wraps
around
”
to 0. The actual range will be multiplied by the
“
Scaler
”
. So, a
Scaler of
“
5
”
will produce an effective counter range of 0 to 499,995.
It is sometimes required to pre-set the counter to a particular value.
For example, you may wish to connect a water meter to a Spider and
make the Spider
’
s starting point the same as the reading on the
meter. To manually set the Spider
’
s starting point; simply enter the
required reading in the
“
Offset
”
field.
Scaling Event and Daily Total Inputs (if present)
You can scale Counter and Event Inputs by specifying a
“
Scaler
”
. A
new scaled value obtained by multiplying the raw counter reading by
the
“
Scaler
”
will be used for all functions, including logging and
alarms.
If scaling is not required, simply leave it set to
“
1
”
.
To change scaling for an input, first access the
“
CHANGE SETUP
”
page, as described in Setting up a Spider for the First Time on page
32. Select "Scale <your input>
”
from
“
Select Input to Calibrate or
Scale
”
. Enter the new
“
Scaler
”
value on the newly displayed page.
You can exit at any time without making changes by clicking the
“
Cancel
”
link. Save the new values by clicking on the
“
Save
”
button.