Hach-Lange SENSION+ 50, SENSION+ 49 User Manual
DOC022.52.80407
50 49
08/2013, Edition 1
User Manual
Table of Contents
Specifications..............................................................................................................3
General information..................................................................................................3
Safety information........................................................................................................3
Use of hazard information............................................................................................ 3
Precautionary labels....................................................................................................4
Product overview.......................................................................................................4
Meter compatibility....................................................................................................5
Preparation for use....................................................................................................5
Polarize the dissolved oxygen probe................................................................5
Calibration.....................................................................................................................5
Calibration notes..........................................................................................................5
Calibration procedure (pH and conductivity)................................................................ 6
Calibration procedure — DO probe, water-saturated (100%) air................................. 7
Adjust the calibration (manual calibration)...................................................................8
Sample requirements...............................................................................................9
Sample measurement...............................................................................................9
Measurement notes.....................................................................................................9
Measurement procedure............................................................................................ 10
Maintenance...............................................................................................................10
Replace the probes.................................................................................................... 10
Clean the probes.......................................................................................................11
Dissolved oxygen probe............................................................................................12
Clean the probe..................................................................................................12
Replace the membrane module.........................................................................12
Fill the membrane module..................................................................................12
Storage......................................................................................................................13
Rehydrate the pH probe............................................................................................13
Troubleshooting.......................................................................................................13
Troubleshooting notes...............................................................................................15
Examine the probes...................................................................................................15
Replacement parts and accessories...............................................................15
Index...............................................................................................................................17
1
Table of Contents
2
Specifications
Specifications are subject to change without notice.
Specification Description
Parameter pH, conductivity and dissolved oxygen (DO)
Measurement range pH: 0 to 14, Conductivity: 5 to 30,000 µS/cm, DO: 0.03 mg/L oxygen to
Temperature sensor Integrated into conductivity sensor
Sensor pH: glass membrane (standard), Conductivity: platinum (platinized),
Reference type (pH) Ag/AgCl
Junction type (pH) Porous pin
Electrolyte pH: Non-refillable gel, DO: Hach electrolyte solution 2759123
Storage solution pH: 3M KCl, Conductivity: distilled water, DO: dry
Number of poles (conductivity sensor) 2
Conductivity cell constant (cm-1) 1.0
Meter compatibility sensION+ MM156 / MM156 DL
Body material Multisensor body: PVC
Length 170 mm
Diameter 40 mm total diameter with 12 mm individual sensors (55 mm diameter
Cable 1.5 m
Connector MP8
1
For use with sensION+ MM156 / MM156 DL portable meters only
saturation, Temperature: 0 to 50 °C (32 to 122 °F)
DO: polarographic with replaceable membrane
Probes body: ABS
Protective shroud: Polycarbonate
with protective shroud installed)
1
General information
In no event will the manufacturer be liable for direct, indirect, special, incidental or consequential
damages resulting from any defect or omission in this manual. The manufacturer reserves the right to
make changes in this manual and the products it describes at any time, without notice or obligation.
Revised editions are found on the manufacturer’s website.
Safety information
Use of hazard information
D A N G E R
Indicates a potentially or imminently hazardous situation which, if not avoided, will result in death or serious injury.
Indicates a potentially or imminently hazardous situation which, if not avoided, could result in death or serious
injury.
Indicates a potentially hazardous situation that may result in minor or moderate injury.
W A R N I N G
C A U T I O N
English 3
N O T I C E
Indicates a situation which, if not avoided, may cause damage to the instrument. Information that requires special
emphasis.
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.
Product overview
The 50 49 multisensor is used for pH, conductivity and dissolved oxygen measurements in general
aqueous samples. The 50 49 multisensor has a built-in temperature sensor within the conductivity
probe. Refer to Figure 1. Refer to Sample requirements on page 9 for limitations on use.
The 50 49 multisensor is used with sensION+ meters. Refer to Meter compatibility on page 5.
Figure 1 Product overview
1 Conductivity probe 4 DO polishing cloth 7 Probe storage tube
2 pH probe 5 DO electrolyte (membrane filling
solution)
3 Dissolved oxygen probe 6 Membrane module (DO probe)
8 Protective shroud
4 English
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