EC400-en-GB_V2.6 11/14
8
Considerations and Techniques
Do not touch the inner surfaces of the conductivity electrodes. Touching the surface of the
platinized electodes may damage and reduce the life of the probe.
Store the electrode dry, in the storage cap.
Always rinse the electrode in de-ionized water between measurements to avoid cross
contamination of the sample. Double rinsing is recommended when high accuracy is required.
Operational Matrix
Function /
Resulting
Action
Power
Status
Mode
Setting
Required Key Press Sequence
On/Off On or
Off
Any Momentary press of the ON/OFF key
Calibration On Conductivity Press & hold CAL/RECALL key for 2
seconds, until it enters CAL function
Store
Reading
On Any measure
mode
Momentary press of the MODE/HOLD key
Hold Release On While In Hold
Mode
Momentary press of the MODE/HOLD key
Enter
Memory
Retrieval
On Any measure
mode
Momentary press of the CAL/RECALL key
followed by a momentary press of the
MODE/HOLD key (Within 4 seconds)
Scroll Stored
Readings
On Memory
Recall
Momentary press of the MODE/HOLD key
(Displays “last in first out”)
Exit Memory
Retrieval
On Memory
Recall
Momentary press of the CAL/RECALL key
Clear Stored
Memory
On Any Measure
Mode
Press and hold the ON/OFF key for 4
seconds, until “clr” is displayed.
Change
Measurement
Mode
On Any Press and hold the MODE/HOLD key for at
least 2 seconds (the modes will scroll by
until the key is released)
Enter
Cond/TDS
Ratio
On TDS (ppm or
mg/l)
Press and release the CAL/RECALL key
twice in quick succession
Change
Cond/TDS
Ratio
On TDS ratio Momentary press of the MODE/HOLD key
(each key press increases the ratio by 0.1,
the value cycles from 0.4 - 1.0)
Exit
Cond/TDS
Ratio
On TDS ratio Momentary press of the CAL/RECALL key
Change
Temperature
Units
Off n/a (off
mode)
Press and hold the CAL/RECALL key then
momentarily press the On/Off key. Release
the CAL/RECALL key after the "SELF CAL"
lights
Override
Auto Power
Off
On Any measure
mode
Momentarily press the Cal Key then
simultaneously press and hold the ON/OFF
& MODE/HOLD key for approximately 2
seconds, until “oFF” is displayed
Default Reset OFF n/a Simultaneously press ON/OFF,
CAL/RECALL and MODE/HOLD
momentarily. “dFLt” will be displayed.
