GENERAL OPERATIONS
17
5 bars
Excellent condition
4 bars
Very good condition
3 bars
Good condition
2 bars
Fair condition
1 bar
Poor condition
1 bar blinking Very poor condition
no bar
Not calibrated
Recommendations:
y
1 bar:
Clean the electrode and recalibrate. If there is still only 1 bar or 1 bar blinking
after recalibration, replace the probe.
y
No bar:
Instrument was not calibrated on current day or a one-point calibration was
performed with previous calibration not yet deleted.
6.4.2. MA814DB/1 EC/TDS/NaCl Probe
When using a new probe, remove the sleeve and inspect the probe prior to use.
Calibrating
Calibration is the first step in obtaining accurate and repeatable results. See CALIBRATION
section for details.
Best practice
y
Always use fresh standards. The calibration standards are easily contaminated.
y
Do not reuse standards.
y
Do not use expired standards.
Regular Maintenance
y
Inspect the probe for cracks or other damage. Replace the probe if necessary.
y
Inspect sensor o-ring for nicks or other damage.
y
Inspect the cable. Cable and insulation must be intact.
y
Connectors should be clean and dry.
y
Follow storage recommendation.
Cleaning Procedure
If a more thorough cleaning is required, remove the sleeve and clean the probe with a
cloth and a nonabrasive detergent. Reinsert the sleeve and recalibrate the probe.
Storage
EC probes should always be stored clean and dry.
