HF scientific CLX Online Residual Chlorine Monitor - Manual (Page 24)

CLX (1/12) Page 19
REV 5.1
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 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 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.
Note: This software filter is completely disabled when the averaging (AVG) is set to 1.