Table of contents
Safety information on page 3 Calibration on page 6
Specifications on page 3 Sample requirements on page 8
Product overview on page 4 Sample measurement on page 9
Meter compatibility on page 5 Maintenance on page 10
Preparation for use on page 5 Troubleshooting on page 12
Polarize the dissolved oxygen probe (89231-660
multisensor) on page 5
Safety information
Precautionary labels
Read all labels and tags attached to the instrument. Personal injury or damage to the instrument
could occur if not observed. A symbol on the instrument is referenced in the manual with a
precautionary statement.
Electrical equipment marked with this symbol may not be disposed of in European public disposal
systems after 12 August of 2005. In conformity with European local and national regulations (EU
Directive 2002/96/EC), European electrical equipment users must now return old or end-of-life
equipment to the Producer for disposal at no charge to the user.
Note: For return for recycling, please contact the equipment producer or supplier for instructions on how to return endof-life equipment, producer-supplied electrical accessories, and all auxiliary items for proper disposal.
Specifications
Specifications are subject to change without notice.
Specification 89231-656 89231-658 89231-660
Parameter pH, conductivity and ORP pH and conductivity pH, conductivity and
dissolved oxygen
Measurement range 0 to 14 pH
5 to 30,000 µS/cm
±2000 mV
0 to 14 pH
5 to 30,000 µS/cm
0 to 14 pH
5 to 30,000 µS/cm
0.03 mg/L oxygen to
saturation
Temperature range 0 to 80 °C
(32 to 176 °F)
0 to 80 °C
(32 to 176 °F)
0 to 50 °C
(32 to 122 °F)
Temperature sensor Yes Yes Yes
Sensor pH: glass (standard)
Conductivity: platinum
pH: glass (standard)
Conductivity: platinum
pH: glass (standard)
Conductivity: platinum
Dissolved oxygen:
replaceable dissolved
oxygen membrane
Reference type Ag/AgCl Ag/AgCl Ag/AgCl
Junction type Porous pin Porous pin Porous pin
Electrolyte Non-refillable gel Non-refillable gel Non-refillable gel
Storage solution KCl 0.01 M (conductivity
standard 1412 µS/cm)
KCl 0.01 M (conductivity
standard 1412 µS/cm)
3M KCl
Number of poles 2 2 2
English 3