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Operating manual
Lab 970
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Lab |
970 |
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Laboratory conductivity meter with automatic sensor recognition
ba75558e03 11/2009
Lab 970
Accuracy when going to The use of advanced technology and the high quality standard of our press instruments are the result of continuous development. This may result
in differences between this operating manual and your instrument. Also, we cannot guarantee that there are absolutely no errors in this manual. Therefore, we are sure you will understand that we cannot accept any legal claims resulting from the data, figures or descriptions.
Warranty We guarantee the instrument described for 3 years from the date of purchase.
The instrument warranty covers manufacturing faults that are discovered within the warranty period.
The warranty does not cover components that are replaced during maintenance work, e. g. batteries.
The warranty claim extends to restoring the instrument to readiness for use but not, however, to any further claim for damages. Improper handling or unauthorized opening of the instrument invalidates any warranty claim.
To ascertain the warranty liability, return the instrument and proof of purchase together with the date of purchase freight paid or prepaid.
CE conformity SI Analytics GmbH hereby declares that the Lab 970 meter is in Radio data transmission compliance with the essential requirements and the other relevant
provisions of Directive 1999/5/EC.
The EC declaration of conformity can be requested from SI Analytics GmbH.
Copyright © 2009, SI Analytics GmbH
Reprinting - even in the form of excerpts - is only allowed with the explicit written authorization of SI Analytics GmbH.
Printed in Germany.
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Lab 970
KONFORMITÄTSERKLÄRUNG
DECLARATION OF CONFORMITY
DÉCLARATION DE CONFORMITÉ
Wir erklären in alleiniger |
We declare under our sole |
Nous déclarons sous notre |
Verantwortung, dass das |
responsibility that the |
seule responsabilité que le |
Produkt |
product |
produit |
Konduktometer |
Conductivity meter |
Conductimètre |
Lab 970 |
Lab 970 |
Lab 970 |
auf das sich diese Erklärung |
to which this declaration |
auquel se réfère cette |
bezieht, übereinstimmt mit |
relates is in conformity with |
déclaration est conforme aux |
den Angaben im Kapitel |
the specifications in the |
indications du chapitre |
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chapter |
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Technische Daten
Konduktometer Lab 970
30. Oktober 2009
SI Analytics GmbH
Hattenbergstr. 10
D-55122 Mainz
Deutschland, Germany, Allemagne
30. Oktober, October 30, 30 octobre 2005 AGQSF 0000-A104-01/091030
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Contents |
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Lab 970 - Contents
1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
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1.1 |
Keypad . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
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1.2 |
Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
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1.3 |
Socket field . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
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1.4 |
Automatic sensor recognition . . . . . . . . . . . . . . . . . . . . . |
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Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
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2.1 |
Authorized use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
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2.2 |
General safety instructions . . . . . . . . . . . . . . . . . . . . . . . |
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Commissioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
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3.1 |
Scope of delivery. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
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3.2 |
Initial commissioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
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4 |
Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
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4.1 Switching on the meter . . . . . . . . . . . . . . . . . . . . . . . . . . 19 4.2 General operating principles . . . . . . . . . . . . . . . . . . . . . . 20 4.2.1 Operating modes . . . . . . . . . . . . . . . . . . . . . . . . 20 4.2.2 Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 4.3 Measuring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 4.3.1 Measuring the conductivity. . . . . . . . . . . . . . . . . 22 4.3.2 Measuring the resistivity. . . . . . . . . . . . . . . . . . . 22 4.3.3 Measuring the salinity . . . . . . . . . . . . . . . . . . . . 23 4.3.4 Measuring the total dissolved solids (TDS) . . . . 24 4.3.5 Measuring with stability control . . . . . . . . . . . . . 25
4.4 Determining/setting up the cell constant [C] . . . . . . . . . . 26 4.4.1 Determining the cell constant (calibration) . . . . . 26 4.4.2 Using the last calibrated cell constant . . . . . . . . 29 4.4.3 Setting the cell constant manually . . . . . . . . . . . 30 4.5 Setting the temperature compensation TC . . . . . . . . . . . 34
4.6 Downloading calibration data . . . . . . . . . . . . . . . . . . . . . 38 4.7 Transmitting data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38 4.7.1 Options for data transmission . . . . . . . . . . . . . . 40
4.7.2Automatically downloading measurement datasets
at intervals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40 4.7.3 RS232 interface . . . . . . . . . . . . . . . . . . . . . . . . . 40 4.7.4 USB interface (device) . . . . . . . . . . . . . . . . . . . . 41 4.7.5 Operation with MultiLab pilot . . . . . . . . . . . . . . . 41 4.8 Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43 4.8.1 System settings . . . . . . . . . . . . . . . . . . . . . . . . . 44
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4.8.2 Measurement settings . . . . . . . . . . . . . . . . . . . . 46 4.8.3 Interval for automatic data transmission . . . . . . . 48 4.9 Reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49 4.9.1 Resetting the cell constant . . . . . . . . . . . . . . . . . 49 4.9.2 Resetting meter settings . . . . . . . . . . . . . . . . . . . 50
5 Maintenance, cleaning, disposal . . . . . . . . . . . . . . . . . 53
5.1 Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53 5.1.1 Replacing the batteries . . . . . . . . . . . . . . . . . . . . 53 5.2 Cleaning. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
5.3 Packing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54 5.4 Disposal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
6 What to do if... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
7 Technical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
7.1 General data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57 7.2 Measuring ranges, resolution, accuracy . . . . . . . . . . . . . 59
8 Lists . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
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Lab 970 |
Overview |
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1 Overview
The Lab 970 compact precision conductivity meter enables you to perform conductivity measurements quickly and reliably. The Lab 970 provides the maximum degree of operating comfort, reliability and measuring certainty for all applications.
The proven procedures for determining or adjusting the cell constant support your work with the conductivity meter.
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Lab 970
3
2
1
1Keypad
2Display
3Socket field
Note
The meter is also available as part of an individual Set of equipment. You will find information on this and other accessories in the SI Analytics GmbH laboratory catalog or via the Internet.
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Overview |
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1.1Keypad
MODE |
CAL |
SC |
In this operating manual, keys are indicated by brackets <..> . The key symbol (e.g. <OK>) generally indicates a short keystroke (under 2 sec) in this operating manual. A long keystroke (approx. 2 sec) is indicated by the underscore behind the key symbol (e.g.
<OK_>).
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<On/Off>: |
Switch the meter on/off |
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<On/Off_>: |
Resetting the determined cell constant |
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<MODE>: |
Select measured parameter |
MODE |
<MODE_>: |
Open setting menu for calibration and |
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measurement |
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<CAL>: |
Call up calibration procedure |
CAL |
<CAL_>: |
Call up calibration data |
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<SC>: |
Activate / deactivate stability control |
SC |
<SC_>: |
Set the interval for data transmission |
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<▲>: |
Increment values, scroll |
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<▼>: |
Decrement values, scroll |
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<OK>: |
Confirm entries |
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<OK_>: |
Open setting menu for system settings |
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Overview |
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Temperature display, function display indicators, status display indicators
1.2Display
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TDS |
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Sal |
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Measured variable |
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- 8 88 |
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mg/l |
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ID sensor symbol |
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m S/cm |
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Measured value dis- |
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1/cm |
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Time |
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Baud |
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Temperature dis- |
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Day.Month |
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No. |
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°C %/K |
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TP |
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play, function display |
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Year |
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Ident |
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888 8°F |
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indicators, status dis- |
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Tref20 |
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Auto |
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Store |
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Tref25 |
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play indicators |
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LoBat |
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Cal |
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ARng |
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AR |
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RCL |
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[AR] |
Stability control is active |
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[ARng] |
Automatic range switch-over: meter measures with |
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highest possible resolution |
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[Cal] |
Calibration |
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[Lin] |
Linear temperature compensation |
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[LoBat] |
With battery operation: Batteries almost empty |
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[nLF] |
Nonlinear temperature compensation |
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[TP] |
Temperature measurement active |
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[Tref20] |
Reference temperature 20 °C |
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[Tref25] |
Reference temperature of 25 °C |
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1.3Socket field
Connectors:
1 Conductivity measuring cell
2 Temperature sensor
3
4 USB interface
5 Power pack
6 RS 232 interface
CAUTION
Only connect sensors to the meter that cannot return any voltages or currents that are not allowed (> SELV and > current circuit with current limiting).
Almost all measuring cells - in particular SI Analytics GmbH measuring cells - fulfill these conditions.
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Overview |
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1.4Automatic sensor recognition
The automatic sensor recognition function enables
zoperation of a sensor with different meters without recalibration
zoperation of different sensors with a meter without recalibration
zto assign measurement data to a sensor
–measurement datasets are always downloaded to the interface along with the sensor type and sensor series number
zto assign calibration data to a sensor
–calibration data is always downloaded to the interface along with the sensor type and sensor series number
zautomatic activation of cell constants with conductivity sensors
To be able to use the automatic sensor recognition function, you need a meter that supports the automatic sensor recognition (e.g. Lab 970) and a sensor (ID sensor) that is suitable for sensor recognition.
In ID sensors, sensor data is stored that clearly identifies the sensor. The sensor data is automatically transmitted to the meter by radio and used for sensor identification there.
Note
You can also operate non-ID sensors with the Lab 970 meter. In this case, however, you will not be able to use the advantages of the sensor recognition function.
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Overview |
Lab 970 |
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ID sensors SI Analytics GmbH ID sensors support the automatic sensor recognition. "ID" is added to the designation of these sensors, e.g. electrode LF913T ID.
Note
Information on available ID sensors is given on the Internet or directly by SI Analytics.
ID sensors connected to the Lab 970 meter are identified by the ID sensor symbol on the display of the meter.
Sensor data from ID sensors
ID sensor symbol
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Time |
Baud |
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No. |
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°C %/K TP |
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Year |
Ident |
5 0°F |
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Tref20 |
Auto |
Store |
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Cal |
ARng AR RCL |
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ID sensors transmit the following sensor data
zSensor type
zSensor series number
zCalibration data
–Calibration date
–Calibration characteristics
–Calibration interval
The calibration data is updated in the ID sensor after each calibration procedure. The ID sensor symbol flashes while this is being done.
Note
The sensor must not be disconnected while the ID sensor symbol is flashing, as otherwise the calibration data will not be completely transmitted. The sensor will then have no valid calibration.
Note
If non-ID sensors are used, the calibration data is read out by the meter and stored in the meter.
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Safety |
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2 Safety
This operating manual contains basic instructions that you must follow during the commissioning, operation and maintenance of the meter. Consequently, all responsible personnel must read this operating manual before working with the meter.
The operating manual must always be available within the vicinity of the instrument.
Target group The meter was developed for work in the laboratory.
Thus, we assume that, as a result of their professional training and experience, the operators will know the necessary safety precautions to take when handling chemicals.
Safety instructions Safety instructions in this operating manual are indicated by the warning symbol (triangle) in the left column. The signal word (e.g. "Caution") indicates the level of danger:
WARNING
indicates instructions that must be followed precisely in order to avoid possibly great dangers to personnel.
CAUTION
indicates instructions that must be followed precisely in order to avoid the possibility of slight injuries or damage to the instrument or the environment.
Further notes
Note
indicates notes that draw your attention to special features.
Note
indicates cross-references to other documents, e.g. operating manuals.
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Safety |
Lab 970 |
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2.1Authorized use
Authorized use of the meter consists exclusively of the measurement of conductivity, temperature, salinity and TDS (total dissolved solids) in a laboratory.
The technical specifications as given in chapter 7 TECHNICAL DATA (page 57) must be observed. Only the operation and running of the meter according to the instructions given in this operating manual is authorized.
Any other use is considered unauthorized.
2.2General safety instructions
This instrument is constructed and tested in compliance with the IEC 1010 safety regulations for electronic measuring instruments.
It left the factory in a safe and secure technical condition.
Function and The smooth functioning and operational safety of the meter can only be operational safety guaranteed if the generally applicable safety measures and the specific
safety instructions in this operating manual are followed during operation.
The smooth functioning and operational safety of the meter can only be guaranteed under the environmental conditions that are specified in chapter 7 TECHNICAL DATA (page 57).
If the instrument was transported from a cold environment to a warm environment, the formation of condensate can lead to the faulty functioning of the instrument. In this event, wait until the temperature of the instrument reaches room temperature before putting the instrument back into operation.
CAUTION
The meter is only allowed to be opened by personnel authorized by SI Analytics GmbH.
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Safe operation If safe operation is no longer possible, the instrument must be taken out of service and secured against inadvertent operation!
Safe operation is no longer possible if the meter:
zhas been damaged in transport
zhas been stored under adverse conditions for a lengthy period of time
zis visibly damaged
zno longer operates as described in this manual.
If you are in any doubt, please contact the supplier of the meter.
Obligations of the The purchaser of this meter must ensure that the following laws and purchaser guidelines are observed when using dangerous substances:
zEEC directives for protective labor legislation
zNational protective labor legislation
zSafety regulations
zSafety datasheets of the chemical manufacturers.
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Safety |
Lab 970 |
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Lab 970 |
Commissioning |
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3 Commissioning
3.1Scope of delivery
zLab 970 laboratory meter
zPower pack
z4 batteries 1.5 V Mignon type AA
zZ875 USB cable with A plug on B plug
zTransparent cover
zOperating manual
zCD-ROM with USB driver
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3.2 |
Initial commissioning |
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Perform the following activities: |
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z Insert batteries |
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z Switch on the meter |
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z Set the date and time |
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z Connect the power pack (for line power operation only). |
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Insert batteries |
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1 |
Open the battery compartment (1) on the underside of the |
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meter. |
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2 |
Place four batteries (type Mignon AA) in the battery |
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compartment. |
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3 |
Close the battery compartment (1). |
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The date (day) flashes in the display. |
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4 |
Set the date and time according to page 42. |
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Commissioning |
Lab 970 |
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Switching on the meter
Setting the date and time
Connecting the power pack
CAUTION
Make sure that the poles of the batteries are the right way round. The ± signs on the batteries must correspond to the ± signs in the battery compartment.
Only use leakproof alkaline manganese batteries.
1Switch on the meter with <On/Off>. A display test is briefly displayed.
2See page 44
You can either operate the measuring instrument with batteries or with the plug-in power supply. The plug-in power supply supplies the measuring instrument with low voltage (12 VDC). This saves the batteries.
CAUTION
The line voltage at the operating site must lie within the input voltage range of the original power pack (see page 57).
CAUTION
Use original power packs only (see page 57).
3Insert the plug into the socket of the conductivity meter.
4Connect the original power pack to an easily accessible power outlet.
Note
You can carry out measurements without the power pack.
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Operation |
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4 Operation
4.1Switching on the meter
1Place the meter on a flat surface and protect it from intense light and heat.
2Press the <On/Off> key.
A display test is briefly displayed.
Subsequently, the meter switches to the measuring mode (measured value display).
Note
The meter has an energy saving feature to avoid unnecessary battery depletion during battery operation.
The energy saving feature switches off the meter if no key was pressed during the specified interval (setting the switch-off interval see
page 44).
The energy saving feature is not active:
zif the meter is supplied via the power pack or the USB interface
zautomatic storingif the printer cable is connected (for external printers).
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Operation |
Lab 970 |
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4.2General operating principles
This section contains basic information of the operation of the Lab 970.
4.2.1Operating modes
The instrument has the following operating modes:
zMeasuring
The display indicates the measurement data in the measured value display
zCalibration
The display guides you thru a calibration procedure with calibration information
zTransmitting data
The meter transmits measuring data and calibration records to a serial interface automatically or manually.
zConfiguration
The system menu or a sensor menu with submenus, settings and functions is displayed
4.2.2Operation
Keys The meter is operated via keys. The keys can have different functions with long or short keystrokes.
Functions Generally, with a short keystroke a function is carried out. A long keystroke opens a setting menu.
In a setting menu, settings are selected with the <▲><▼> keys. A setting is confirmed with <OK>. With confirming, the setting is finished and the next setting is displayed.
Representation In this operating manual, keys are indicated by brackets <..> . The key symbol (e.g. <OK>) generally indicates a short keystroke (under 2 sec) in this operating manual. A long keystroke (approx. 2 sec) is indicated by the underscore behind the key symbol (e.g.
<OK_>).
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Operation |
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4.3Measuring
Preparatory activities Perform the following preparatory activities when you want to measure:
1Connect a measuring cell to the meter.
2Adjust the temperature of the test solutions and measure the current temperature if the measurement is made without a temperature sensor.
3Calibrate or check the meter with the measuring cell.
4Select the measured parameter with <MODE>.
CAUTION
When connecting an earthed PC/printer, measurements cannot be performed in earthed media as incorrect values would result. The RS232 and USB interfaces are not galvanically isolated.
Temperature sensor The temperature measurement is absolutely essential for a reproducible conductivity measurement. If a temperature sensor is connected, it is indicated on the display by TP.
If you use a conductivity measuring cell without integrated temperature sensor, we recommend to use an external temperature sensor.
Note
The conductivity meter automatically recognizes the type of the temperature sensor used. Therefore, you can connect measuring cells with an NTC30 or Pt1000.
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Operation |
Lab 970 |
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4.3.1Measuring the conductivity
1 |
Perform the preparatory activities according to page 21. |
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2 |
Immerse the conductivity measuring cell in the test sample. |
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3 |
If necessary, scroll with <MODE> until the measured |
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parameter ӕ with the unit mS/cm or µS/cm is displayed. |
4 |
Wait for a stable measured value. |
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530 µS/cm
25 0 °C TP
Tref25
nLF
5 Measurement with stability control (see page 25).
4.3.2Measuring the resistivity
1 |
Perform the preparatory activities according to page 21. |
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2 |
Immerse the conductivity measuring cell in the test sample. |
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3 |
If necessary, scroll with <MODE> until the measured |
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parameter ӕ with the unit MOhm is displayed. |
4 |
Wait for a stable measured value. |
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