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Technical data

Lab 955

ba77144e02

12/2017

Technical data

10.1

Measuring ranges, resolution, accuracy

10.1.1

Measuring ranges, resolution

Parameter

Measuring range

Resolution

[µS/cm]

0.000 ... 1.999

0.00 ... 19.99

0.0 ... 199.9
200 ... 1999

* only possible with cells of the cell constant, 0.010 cm

-1

** only possible with cells of the cell constant, 0.010 cm

-1

or 0.090 ... 0.110 cm

-1

0.001
0.01
0.1
1

[mS/cm]

2.00 ... 19.99
20.0 ... 199.9
200 ... 1000

0.01
0.1
1

Specific resis-
tance [MOhm*cm]

1.000 ... 1.999
2.00 ... 19.99
20.0 ... 199.9
200 ... 1999

0.001
0.01
0.1
1

SAL

0.0 ... 70.0
according to the IOT table

0.1

TDS [mg/l]

0 ... 1999
Factor can be set between
0.40 and 1.00

T [°C]

- 25.0 ... + 125.0

0.1

T [°F]

- 13.0 ... + 257.0

0.1

Summary of Contents for SI Analytics Lab 955

Page 1: ...OPERATING MANUAL ba77144e02 12 2017 Lab 955 CONDUCTIVITY METER ENTER M CAL Lab 955...

Page 3: ...urther documents providing safety information 8 2 2 Safe operation 9 2 2 1 Authorized use 9 2 2 2 Requirements for safe operation 9 2 2 3 Unauthorized use 9 3 Commissioning 10 3 1 Scope of delivery 10...

Page 4: ...2 3 Determining the cell constant calibration in control standard 19 5 2 4 Using the last calibrated cell constant 20 5 2 5 Setting the cell constant manually 21 5 2 6 Calibration data 22 6 Settings 2...

Page 5: ...e E3 32 9 1 2 Error message OFL UFL 32 9 2 General information 32 9 2 1 LoBat Display 32 9 2 2 Instrument does not react to keystroke 33 9 2 3 Displaying the software version meter 33 10 Technical dat...

Page 6: ...Contents Lab 955 6 ba77144e02 12 2017...

Page 7: ...ments quickly and reliably The Lab 955 provides the maximum degree of operating comfort reliability and measuring certainty for all applications 1 2 Sensors A measuring system ready to measure consist...

Page 8: ...might be damaged if the actions mentioned are not taken 2 1 2 Safety signs on the meter Note all labels information signs and safety symbols on the meter and in the battery compartment A warning symbo...

Page 9: ...r safe operation The meter may only be operated according to the authorized use specified above The meter may only be supplied with power by the energy sources mentioned in this operating manual The m...

Page 10: ...ing ways Mains operation with the supplied power pack Battery operation 4 x alkaline manganese batteries type AA 3 3 Initial commissioning Perform the following activities Insert the supplied batterie...

Page 11: ...the original power pack to an easily accessible power outlet CAUTION Make sure that the poles of the batteries are positioned correctly The signs on the batteries must correspond to the signs in the b...

Page 12: ...Commissioning Lab 955 12 ba77144e02 12 2017 3 3 3 Mounting the stand The stand base can be mounted at the right side of the meter ENTER M CAL 1 2...

Page 13: ...in this operating manual A long keystroke approx 2 sec is indi cated by the underscore behind the key symbol e g MENU OK_ Key Symbol Meaning On Off On Off_ Switches the meter on or off Resets calibrat...

Page 14: ...ref25 Tref20 ARng Cal nLF AR TP 3 2 4 5 1 cm Lin Display Meaning AR Stability control AutoRead is active TP Temperature measurement active Time Setting of calibration interval ARng Automatic range swi...

Page 15: ...o measure 4 3 Switching off the meter 1 Switch off the meter with On Off The meter is switched off 1 Conductivity measuring cell 2 Power pack 3 Service interface 1 2 3 0 5 2 0 3 5 C S cm m nLF TP Tref...

Page 16: ...m settings press ENTER__ long pressure 4 4 3 Setting mode The following functions are available in the setting mode To change the current setting press Confirm the setting with ENTER The next setting...

Page 17: ...temperature of the test sample with 5 Wait for a stable measured value The AR display indicator no longer flashes 6 If necessary select the measured parameter with MODE Conductivity S cm mS cm Salinit...

Page 18: ...Pt1000 integrated in the sensor Manual determination and input of the temperature The measuring instrument recognizes whether a suitable sensor is connected and automatically switches on the temperat...

Page 19: ...commend every 6 months 5 2 2 When to calibrate When the cleaning interval has expired Routinely within the framework of the company quality assurance 5 2 3 Determining the cell constant calibration in...

Page 20: ...ompleted or termi nate the stability control with MENU OK The determined cell constant appears on the display The meter automatically stores the cell constant 8 Use MENU OK to finish the calibration T...

Page 21: ...he calibration The selected calibrated cell constant is used 5 2 5 Setting the cell constant manually This method can be used when the cell constant of the measuring cell is known e g taken from the o...

Page 22: ...ge 0 250 2 500 cm 1 Range 0 090 0 110 cm 1 Permanent 0 010 cm 1 5 Set the exact cell constant within the range with as necessary 6 Use MENU OK to finish the calibration The adjusted cell constant is u...

Page 23: ...9 0 7 4 C Cal Display Cell constant cm 1 Within the range 0 450 0 500 cm 1 or 0 800 0 880 cm 1 E3 Outside the range 0 450 0 500 cm 1 or 0 800 0 880 cm 1 Eliminate the error see section 9 WHAT TO DO IF...

Page 24: ...ENTER 3 To change the current setting press 4 Confirm the setting with ENTER The setting is stored The next setting is displayed 5 Change or confirm the other settings or Quit the setting menu with M...

Page 25: ...re compensation 1 Open the calibration menu with CAL 2 If necessary select the Use tC setting with CAL 3 Press MENU OK or CAL_ to confirm the selection of Use tC The set temperature compensation is di...

Page 26: ...he delivery condition You can adjust this factor to meet your requirements in the range 0 40 1 00 1 Select the measured parameter TDS with MODE 2 Set the TDS factor with The reference temperature is s...

Page 27: ...operation Automatic switch off function The meter has an automatic switch off function to avoid unnecessary power consumption during battery operation The energy saving feature switches off the meter...

Page 28: ...ent and system settings 1 Switch on the meter with On Off The display test appears briefly on the display 2 During the display test press MODE to open the menu for the reset of the meter settings Init...

Page 29: ...d after a reset Before measuring make sure the meter uses the cell con stant suitable for the measuring cell Measurement settings Default Reference temperature Tref t25 Unit of the measured temperatur...

Page 30: ...meter 2 Remove the old batteries 3 Place four batteries type AA in the battery compartment See the relevant operating manuals of the sensors for instructions on maintenance You can operate the meter e...

Page 31: ...the disposal or return system statutory in your country If you have any questions please contact your supplier When the batteries are nearly empty the LoBat status indicator is displayed Dispose of us...

Page 32: ...ions on cleaning and exchange of sensors are given in the documentation of your sensor Cause Remedy Measuring cell contaminated Clean the measuring cell and replace it if necessary Calibration solutio...

Page 33: ...ying the software version meter Cause Remedy Operating condition undefined or EMC load unallowed Processor reset Press the MENU OK and On Off key simultaneously Cause Remedy E g a question by the serv...

Page 34: ...ly possible with cells of the cell constant 0 010 cm 1 only possible with cells of the cell constant 0 010 cm 1 or 0 090 0 110 cm 1 0 001 0 01 0 1 1 mS cm 2 00 19 99 20 0 199 9 200 1000 0 01 0 1 1 Spe...

Page 35: ...2 500 cm 1 0 090 0 110 cm 1 0 010 cm 1 permanent Reference temperature Values Adjustable 20 C Tref20 25 C Tref25 Parameter Accuracy Temperature of the test sample Temperature compensation Nonlinear nL...

Page 36: ...II Test certifi cates CE Ambient conditions Storing 25 C 65 C Operation 5 C 55 C With the power pack connected 5 C 40 C Allowable relative humidity Yearly mean 75 30 days year 95 Other days 85 Power s...

Page 37: ...15 of the FCC Rules These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment This equipment generates uses and...

Page 38: ...of the electrical conductivity Salinity The absolute salinity SA of seawater corresponds to the relationship of the mass of dissolved salts to the mass of the solution in g kg In practice this dimens...

Page 39: ...sting Measured param eter The measured parameter is the physical dimension determined by measuring e g pH conductivity or D O concentration Measured value The measured value is the special value of a...

Page 40: ...em Temperature func tion Name of a mathematical function expressing the tem perature behavior of a test sample a sensor or part of a sensor Test sample Designation of the test sample ready to be measu...

Page 41: ...ult measurement settings 29 Default system settings 29 Determining the cell constant 19 Display 14 I Initial commissioning 10 Initialize 28 K Keys 13 M Measured value display 16 Measuring conductivity...

Page 42: ...Index Lab 955 42 ba77144e02 12 2017...

Page 43: ......

Page 44: ...purpose creating advanced technology solutions to the world s water challenges Developing new technologies that will improve the way water is used conserved and re used in the future is central to our...

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