Watts HF scientific CLX- XT, Owner'S Manual

Page: 28 / 45

CLX-XT (28652) Page 22
REV 5 (5/2020)
7.7 Units of Measurement
The unit of measure can be set to either mg/L (milligrams per liter) or PPM (parts per
million). The factory setting is mg/L. Select the desired UNIT using the

and

buttons
and press the

button to accept it.
mg/L screen PPM screen
7.8 Averaging and Filtering
The CLX-XT can display and output averaged readings to help smooth out the response
and eliminate large reading variation in rapidly changing processes. There are 5 settings
for the averaging feature:
1 = No averaging, each reading is in “real time”.
2 = The current reading and previous reading are averaged.
3 = The current reading and previous 2 readings are averaged.
4 = The current reading and previous 3 readings are averaged.
5 = The current reading and previous 4 readings are averaged.
The factory setting is averaging of 2. Select the desired AVG using the

and

buttons
and press the

button to accept it.
In addition to averaging, the CLX-XT has a software filter that limits the change between
consecutive readings to 20%. For example, the reading following a reading of 1.00 ppm
could not be displayed as higher than 1.20 ppm or lower than 0.80 ppm. This filter also
helps smooth out large changes and eliminate reading
spikes. After 3 consecutive readings, it is assumed that
the large change in the readings is "real", and the filter
will be disabled. For example, the change between
reading 1 & 2, and readings 2 & 3 will be limited to
20%, but the change between readings 3 & 4 will not be
limited.
This software filter is completely disabled when the averaging (AVG) is set to 1.
7.9 LCD Backlight Brightness
The LCD backlight brightness may need to be adjusted. This is of particular interest if
multiple instruments are located in the same area and it is desired for the entire group to
have the same appearance. Ten levels are available. The
factory setting brightness is 8.
Change the brightness by pressing the

or

button.
When the desired brightness has been selected, press the

button.