Commissioning CM14
26 Endress+Hauser
EP-PW function: The following table lists the temperature-dependent limit values for
"Purified Water" (PW) in accordance with EP; this table is also programmed into the
transmitter.
Temperature [°C] Conductivity [µS/cm] Temperature [°C] Conductivity [µS/cm]
0 2.4 60 8.1
10 3.6 70 9.1
20 4.3 75 9.7
25 5.1 80 9.7
30 5.4 90 9.7
40 6.5 100 10.2
50 7.1
The measurement is performed in the following steps:
• The transmitter determines the uncompensated conductivity and the water temperature.
• If the temperature is between two table entries, the limit value for the conductivity is
determined by interpolation of the two neighboring points.
• An alarm is triggered if the measured value is greater than the limit value.
Pre-alarm
In addition, a USP pre-alarm is available that is activated at an adjustable switch-on point of
80 % of the USP/EP limit value. This means that users are alerted in time to the need to
regenerate their system.
6.6 Device diagnostics (Diagnostics menu)
You can access the main menu by pressing the 'E' key during operation. Navigate through the
available menus with the '+' and '–' keys. When the desired menu is displayed, press the 'E' key
to open the menu. Use the "x Back" option, which can be found at the bottom of each menu/
submenu, to move up one level in the menu structure.
Parameters Possible settings Description
Current diag. Read only. Displays the current diagnostic message
Last diag. Read only. Displays the last diagnostic message
Diagnost logbook Read only Displays the last diagnostic messages
Device info Read only. Displays the device information
Device tag Read only. Displays the device tag
Device name Read only. Displays the device name
Serial number Read only. Displays the serial number of the device
Order ident Read only. Displays the order code of the device
FW revision Read only. Displays the firmware version
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