EC500 datasheet(10/14 Pages) EXTECH

10 / 14 page

EC500 V2.3 3/08

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

pH or

Conductivity

Press & hold CAL/RECALL key for 2

seconds, until it enters CAL function

Store Reading

Any measure

mode

Momentary press of the

MODE/HOLD key

Hold Release

While In Hold

Mode

Momentary press of the

MODE/HOLD key

Enter Memory

Retrieval

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

Memory

Recall

Momentary press of the

MODE/HOLD key

(Displays “last in first out”)

Exit Memory

Retrieval

Memory

Recall

Momentary press of the

CAL/RECALL key

Clear Stored

Memory

Any Measure

Mode

Press and hold the ON/OFF key for 4

seconds, until “clr” is displayed.

Change

Measurement Mode

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

TDS (ppm or

mg/l)

Press and release the CAL/RECALL

key twice in quick succession

Change Cond/TDS

Ratio

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

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

Any measure

mode

Momentarily press the CAL/RECALL

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.

EC500 Datasheet(PDF) 10 Page - Extech Instruments Corporation.

EC500 Datasheet(HTML) 10 Page - Extech Instruments Corporation.

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14

Datasheet Download

Link URL