ATI
Model A15/82 Fluoride Monitor with Auto-Calibration
18
O&M Manual
Rev-G (6/10)
CONFIGURATION
The electronics for the Fluoride system are designed to be as flexible as possible. A number of
programming functions are provided in the CONFIGURATION menu and are protected by an access number,
which must be entered to allow changes in these settings. Some settings are for factory use only, while others
are used for customer selection of certain operating parameters.
Press the MODE key until the display reads CONFIGURATION and then press CAL. The display will
read “KB UNLOCKED (OR LOCKED)”. Press ENTER twice and the display will read “ACCESS NR.: 0”. To
gain access to the configuration routines, the access number must be entered using the UP or DOWN keys. The
default access number is 0, so you can enter the configuration menu by simply pressing ENTER. This number is
programmable and can be set to any 3 digit number desired. Remember to record any custom access number
entered into the unit in a location where you can always find it. Should you lose your access number, call ATI for
assistance with a bypass sequence.
1.
Type of Ion: X
-
This routine allows selection of the type of ISE sensor connected to the monitor. The
monitor will accept a variety of ion selective electrodes. The fluoride sensor is a negatively charged
monovalent ion, so the factory setting is X
-
. The setting should not be changed.
2.
Measure U: PPM
This routine allows selection of the units of measurement. The factory setting is
parts-per-million. A selection of mg/l can be made if desired by using the UP or DOWN arrows to select
that unit of measurement and then pressing ENTER.
3.
SCALE: 10.00 ppm
This routine allows selection of the overall display range. 10.00 is the default, but
ranges of 100.0 and 1000 can be selected if desired. Select using the UP or DOWN keys and then press
ENTER.
4.
LARGE S RT: 2.0s
This routine allows for electronic damping of the analog output signals. This
monitor contains a 2 stage response time filter. This allows the instrument to change rapidly in response
to a large change while changing only slowly when the variations are small. The “LARGE S RT” refers to
the response time to a large concentration change. The default setting is 2 seconds. This value can be
increased to as much as 20 seconds by using the UP arrow.
5.
SMALL S RT: 10.0s
This routine allows for electronic damping of small changes in the input signal.
This eliminates rapid changes in the display due to minor variations in the pH value. The default setting
is 10 seconds. This value can be increased to as much as 20 seconds by using the UP arrow.
6.
CAL OUT1: 4-20 mA
This routine allows programming of the analog output signal. Either a 4-20 or 0-
20 mA output may be selected by using the UP key. The default is 4-20 mA. If a zero based voltage
output is required, the 0-20 mA output may be used in conjunction with a shunt resistor across the
connection terminals on the back of the instrument. Once a selection is made, press ENTER.
7.
CAL P1: XX.XX ppm:
Analog outputs are adjusted to an overall operating range, such as 0-2 ppm or 0-
5 ppm. The CAL P1 routine allows assignment of the zero value for the output. Normally, this value will
be 00.00 ppm fluoride. However, you can offset the 4 mA point if desired by using the UP key. Press
ENTER when the proper value has been selected.
8.
CAL P2: XX.XX ppm:
The CAL P2 routine allows assignment of the full scale value for the output. For
a fluoride output, this would be the 20 mA value for the output, such as 1.00 for a range of 0-1 ppm.
Press ENTER when the proper value has been selected.
