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Xylem EC510 PORTABLE CONDUCTIVITY METER KIT User Manual

Page 13

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EC500 V2.1 7/13/05

13

Support line (781) 890-7440

Technical support: Extension 200; E-mail: [email protected]

Repair & Returns: Extension 210; E-mail: [email protected]

Product specifications subject to change without notice

For the latest version of this User’s Guide, Software updates, and other

up-to-the-minute product information, visit our website: www.extech.com

Troubleshooting

Problem Possible

Cause

Action

Reading is frozen

Unit is in “HOLD” mode

Press MODE/HOLD key to
exit “HOLD” mode

“BAT” message

Batteries are low

Replace batteries

Unit will not calibrate in pH

Low pH slope

Replace electrode, see
reorder information

Unit will not calibrate in pH

Clogged or contaminated
reference junction

Clean junction (see
cleaning instructions)

Unit will not calibrate in pH

Damaged or worn out
sensing membrane

Replace electrode, see
reorder information

Unit will not calibrate in pH

Contaminated pH buffers

Use fresh buffers

Unit will not calibrate in
conductivity mode

Contaminated conductivity
standards

Use fresh standards

Unit will not calibrate in
conductivity mode

Dirty probe

Clean conductivity probe
(See cleaning instructions)

Unit will not calibrate in
conductivity mode

Damaged conductivity probe

Replace electrode, see
reorder information

Unit will not calibrate in
conductivity mode

Trapped air bubbles

Tap or stir to release air
bubbles

Unit will not turn on

Batteries are low or dead

Replace batteries

Unit will not turn on

Batteries installed with
incorrect polarity

Replace batteries,
observe polarity

“RENEW” message

pH sensor needs
recalibration

Recalibrate unit

Use fresh buffers

“RENEW” message

pH sensor slope has fallen
below acceptable limits

Replace electrode, see
reorder information

Unit will not respond to any
key presses

Internal fault

Perform hard reboot:
Remove batteries, hold
ON/OFF switch down for 5
seconds, replace batteries

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