kruss DS7000 Series User manual

DENSITY METER | DS7000 SERIES
USER MANUAL
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MEASURING QUALITY. SINCE 1796
www.kruess.com

Inhalt
Chapter 1 - Safety .............................................................................................................. 9
1.1 Basic safety information................................................................................................... 9
1.2 General sources of danger .............................................................................................. 9
1.3 Personnel qualifications ................................................................................................. 10
Chapter 2 - About this manual.......................................................................................... 11
2.1 Typographical conventions............................................................................................. 11
2.2 Significance of warning messages................................................................................... 11
Chapter 3 - Functional specification .................................................................................. 13
3.1 Features at a glance ..................................................................................................... 13
3.2 Areas of application ...................................................................................................... 14
Chapter 4 - Device description .......................................................................................... 15
4.1 Overview of device types ............................................................................................... 15
4.2 Delivery content ............................................................................................................ 15
4.3 Device views DS7000 ................................................................................................... 16
4.3.1 Front view ........................................................................................................ 16
4.3.2 Rear view ......................................................................................................... 17
4.4 Frequency oscillator with connecting pieces..................................................................... 18
4.4.1 Standard hoses and standard connection pieces.................................................. 18
4.4.2 Acid-resistant hoses and connecting pieces ........................................................ 19
4.5 Peristaltic pump DS7070 ............................................................................................... 20
4.6 Drying unit ................................................................................................................... 21
4.6.1 Drying unit DS7050.......................................................................................... 21
4.6.2 Drying unit DS7060.......................................................................................... 22
4.7 DS7000 with drying unit DS7050 without peristaltic pump................................................ 23
4.7.1 Setup............................................................................................................... 23
4.7.2 Hoses .............................................................................................................. 23
4.7.3 Hose connections and flow direction for measurement and rinsing........................ 24
4.7.4 Hose connections and flow directions for drying .................................................. 24
4.8 DS7000 with drying unit DS7050 and peristaltic pump DS7070 ....................................... 25
4.8.1 Setup............................................................................................................... 25
4.8.2 Hoses .............................................................................................................. 25
4.8.3 Hose connections and flow direction for measurement and rinsing........................ 26
4.8.4 Hose connections and flow direction for drying.................................................... 26
4.9 DS7000 with drying unit DS7060 and peristaltic pump DS7070 ....................................... 27
4.9.1 Setup............................................................................................................... 27
4.9.2 Hoses .............................................................................................................. 27
4.9.3 Hose connections and flow direction for measurement and rinsing........................ 28
4.9.4 Hose connections and flow direction for drying.................................................... 28
4.10 Screen description......................................................................................................... 29
4.10.1 Main menu ...................................................................................................... 29
4.10.2 System menu.................................................................................................... 30
4.10.3 Methods menu ................................................................................................. 30
4.10.4 Results menu .................................................................................................... 31

4.10.5 User menu ....................................................................................................... 31
4.11 Measuring principle....................................................................................................... 32
Chapter 5 - Basic operation .............................................................................................. 33
5.1 Switch menu levels ........................................................................................................ 33
5.2 Edit settings and parameters .......................................................................................... 33
5.3 Save/do not save input.................................................................................................. 34
5.3.1 Save input........................................................................................................ 34
5.3.2 Do not save input ............................................................................................. 35
5.4 Editing authorisations .................................................................................................... 35
5.5 User-specific definitions ................................................................................................. 35
5.6 Disabled methods ......................................................................................................... 35
5.7 Device version and data ................................................................................................ 36
Chapter 6 - Installation..................................................................................................... 37
6.1 Select site..................................................................................................................... 37
6.2 Connect hoses to the frequency oscillator........................................................................ 37
6.2.1 Standard connections and Luer syringe for manual filling ..................................... 37
6.2.2 Standard connections for semi-automatic filling................................................... 38
6.2.3 Acid-resistant hoses for semi-automatic filling ..................................................... 38
6.2.4 Acid-resistant hoses for manual filling with a Luer syringe ..................................... 39
6.3 Install DS7000 with drying unit DS7050 and without peristaltic pump................................ 40
6.4 Install DS7000 with drying unit DS7050 and peristaltic pump ........................................... 40
6.4.1 Establish hose connections for DS7050 .............................................................. 41
6.4.2 Connect peristaltic pump DS7070...................................................................... 41
6.5 Install DS7000 with drying unit DS7060 and peristaltic pump ........................................... 42
6.5.1 Establish hose connections for DS7060 .............................................................. 42
6.5.2 Connect peristaltic pump DS7070...................................................................... 42
6.6 Connect printer............................................................................................................. 43
6.7 Connect network printer ................................................................................................ 43
6.8 Connect the density meter to the LIMS ............................................................................ 44
6.9 Connect the density meter to the mains........................................................................... 44
Chapter 7 - Initial start-up ................................................................................................ 45
7.1 Switch on device ........................................................................................................... 45
7.2 Manually clean frequency oscillator without peristaltic pump DS7070 ............................... 45
7.3 Clean with peristaltic pump DS7070 and drying unit DS7050........................................... 47
7.3.1 Clean frequency oscillator with individual functions.............................................. 48
7.3.2 Clean frequency oscillator with cleaning procedure ............................................. 50
7.4 Clean with peristaltic pump DS7070 and drying unit DS7060........................................... 52
7.4.1 Clean frequency oscillator with individual functions.............................................. 52
7.4.2 Clean frequency oscillator with cleaning procedure ............................................. 54
7.5 Check filling level of the frequency oscillator ................................................................... 56
7.6 Adjust pump settings ..................................................................................................... 56
Chapter 8 - Routine operation........................................................................................... 58
8.1 Prepare device.............................................................................................................. 58
8.1.1 Switch on device............................................................................................... 58
8.1.2 Register users ................................................................................................... 58

8.1.3 Switch users...................................................................................................... 59
8.1.4 Select method .................................................................................................. 59
8.1.5 Sample numbers............................................................................................... 60
8.1.6 Measure QC sample ........................................................................................ 60
8.2 Present sample.............................................................................................................. 60
8.2.1 Present sample manually ................................................................................... 60
8.2.2 Present sample semi-automatically with peristaltic pump and drying unit DS7050... 61
8.2.3 Present sample semi-automatically with peristaltic pump and drying unit DS7060... 61
8.2.4 Present the sample plate for the auto sampler...................................................... 62
8.2.5 Begin measurement .......................................................................................... 62
8.2.6 Insert comment................................................................................................. 62
8.2.7 Input standard value ......................................................................................... 63
8.2.8 Define sample series for auto sampler ................................................................ 64
8.2.9 Start-up behaviour without temperature control ................................................... 64
8.2.10 Start-up behaviour with temperature control........................................................ 64
8.3 Measurement................................................................................................................ 65
8.4 Measuring process with peristaltic pump DS7070 ............................................................ 66
8.5 Measurement procedure with Autosampler...................................................................... 67
8.6 Clean the frequency oscillator for the next sample............................................................ 67
8.6.1 Manually clean without peristaltic pump DS7070 ................................................ 68
8.6.2 Clean semi-automatically with peristaltic pump and drying unit DS7050................ 69
8.6.3 Clean semi-automatically with peristaltic pump and drying unit DS7060................ 70
8.6.4 Clean frequency oscillator with Autosampler ....................................................... 71
8.7 Autosampler operation with firmware version 7.215 and above ........................................ 71
8.7.1 Start sample series menu................................................................................... 71
8.7.2 Configure sample series menu........................................................................... 73
8.7.3 Configure measuring sequence using a barcode scanner..................................... 74
8.7.4 Measure previous sample series......................................................................... 75
8.7.5 Protect sample series......................................................................................... 75
8.7.6 Pause the sample series..................................................................................... 76
8.7.7 Autosampler operation with activated templates .................................................. 77
8.8 Measurement results...................................................................................................... 78
8.8.1 Result presentation............................................................................................ 78
8.8.2 Print measuring result........................................................................................ 78
8.8.3 Export and print result list .................................................................................. 79
8.8.4 Filter results pane.............................................................................................. 80
8.8.5 Filter QC results ............................................................................................... 80
8.9 Final cleaning............................................................................................................... 81
8.10 Switch off device ........................................................................................................... 81
Chapter 9 - Methods menu ............................................................................................... 82
9.1 Methods menu overview ................................................................................................ 82
9.1.1 Access methods menu....................................................................................... 82
9.1.2 Method parameters........................................................................................... 82
9.2 Create new method....................................................................................................... 84
9.3 Change method names ................................................................................................. 86
9.4 Scale 1 and Scale 2 tab................................................................................................. 86
9.4.1 Define new scale .............................................................................................. 88
9.4.2 Define calculation formula................................................................................. 93
9.4.3 Define temperature compensation...................................................................... 95
9.4.4 Define temperature compensation formula.......................................................... 98

9.5 Temp. tab................................................................................................................... 100
9.6 Settings tab ................................................................................................................ 101
9.6.1 Define measurement mode.............................................................................. 103
9.6.2 Alarm profiles................................................................................................. 104
9.6.3 Define and modify alarm profiles ..................................................................... 105
9.7 Sampl. tab ................................................................................................................. 108
9.7.1 Manual sample feeding................................................................................... 109
9.7.2 Define sample feeding with DS7070................................................................. 109
9.7.3 Define sample feeding with autosampler. .......................................................... 111
9.7.4 Define intermediate cleaning for autosampler ................................................... 112
9.8 Cleaning tab .............................................................................................................. 116
9.8.1 Cleaning procedure modules........................................................................... 117
9.8.2 Define cleaning procedure for DS7070 ............................................................ 119
9.8.3 Define cleaning procedure for the autosampler ................................................. 124
9.8.4 Change cleaning procedures........................................................................... 129
9.9 Opt. tab..................................................................................................................... 131
9.9.1 Measure quality controls.................................................................................. 132
9.9.2 Disable/release methods ................................................................................. 135
9.10 Configure peristaltic pump DS7070.............................................................................. 135
9.10.1 Select sample feeding ..................................................................................... 135
9.10.2 Select final cleaning........................................................................................ 136
9.10.3 Start final cleaning.......................................................................................... 136
9.10.4 TIP for intermediate cleaning ........................................................................... 136
9.11 Configure autosampler ............................................................................................... 137
9.11.1 Sample uptake ............................................................................................... 137
9.11.2 Method: Select sample feeding ........................................................................ 137
9.11.3 Method: Select intermediate cleaning ............................................................... 137
9.11.4 Method: Select final cleaning........................................................................... 138
9.11.5 Start final cleaning.......................................................................................... 138
Chapter 10 - System menu ............................................................................................... 139
10.1 General tab................................................................................................................ 139
10.1.1 Access system menu........................................................................................ 139
10.1.2 Explanatory notes ........................................................................................... 140
10.1.3 Set date ......................................................................................................... 141
10.1.4 Set time ......................................................................................................... 141
10.1.5 Select the date and time format........................................................................ 141
10.1.6 Adjust screen brightness .................................................................................. 141
10.1.7 Select temperature unit.................................................................................... 141
10.2 Printer tab................................................................................................................... 142
10.2.1 Access printer menu........................................................................................ 142
10.2.2 Define serial interface for printer ...................................................................... 142
10.2.3 Define network printer..................................................................................... 144
10.2.4 Define PDF file ............................................................................................... 145
10.2.5 Add logo for print-out ..................................................................................... 146
10.3 Functions tab.............................................................................................................. 147
10.3.1 Access function menu...................................................................................... 148
10.3.2 Available functions.......................................................................................... 148
10.3.3 Assign function keys ........................................................................................ 149
10.3.4 Allocate function keys multiple ways ................................................................. 150
10.3.5 Delete key function ......................................................................................... 153

10.4 Network tab ............................................................................................................... 155
10.5 Service tab ................................................................................................................. 156
1.1.1 Access service menu ....................................................................................... 156
1.1.1 Service explanatory notes ................................................................................ 156
1.1.2 Calculate tare ................................................................................................ 157
7.1.1 Delete tare..................................................................................................... 159
5.1.1 Measurement calibration................................................................................. 159
10.6 Perform firmware update.............................................................................................. 165
10.6.1 Run SQL script................................................................................................ 166
10.7 Opt. tab..................................................................................................................... 168
1.1.1 Activate user administration ............................................................................. 169
2.1.1 Individual system settings................................................................................. 169
10.8 Audit Trail................................................................................................................... 171
10.8.1 Activating the audit trail................................................................................... 171
10.8.2 Opening the audit traillog ............................................................................... 172
10.8.3 Recorded content............................................................................................ 172
10.8.4 Functionality of the entry creation ..................................................................... 173
10.8.5 Printing or exporting the audit trail log .............................................................. 174
Chapter 11 - Results menu................................................................................................ 175
11.1 Access results menu .................................................................................................... 175
11.2 Access result details..................................................................................................... 176
11.3 Create results list......................................................................................................... 178
11.3.1 Sort results list in descending or ascending order............................................... 178
11.3.2 Configure results columns ............................................................................... 178
11.4 Filter results according to time period............................................................................ 179
11.4.1 Select time period........................................................................................... 179
11.4.2 Reset time period............................................................................................ 180
11.5 Filter results ................................................................................................................ 180
11.5.1 Open filter menu ............................................................................................ 180
11.5.2 Filter menu functions ....................................................................................... 181
11.6 Define, change and access filters.................................................................................. 181
11.6.1 Access filters................................................................................................... 181
11.6.2 Define and save filter ...................................................................................... 182
11.6.3 Filter according to date and time...................................................................... 185
11.6.4 Filter according to user, method and comment .................................................. 185
11.6.5 Filter QC samples........................................................................................... 186
11.6.6 Filter last sample series.................................................................................... 187
11.6.7 Edit existing filters ........................................................................................... 187
11.6.8 Reset existing filter........................................................................................... 189
11.7 Export results .............................................................................................................. 189
11.8 Print results ................................................................................................................. 190
Chapter 12 - User menu ................................................................................................... 191
12.1 User menu overview.................................................................................................... 191
12.1.1 Access user menu ........................................................................................... 191
12.1.2 Explanatory notes ........................................................................................... 191
12.2 General tab ............................................................................................................... 192
12.2.1 Create new user ............................................................................................. 193
12.2.2 Log in with or without password ....................................................................... 195

12.2.3 Change password........................................................................................... 195
12.2.4 Logging users in and out ................................................................................. 195
12.2.5 Edit user......................................................................................................... 197
12.3 Colour tab ................................................................................................................. 197
12.3.1 Select colour .................................................................................................. 198
12.3.2 Define user-specific colour............................................................................... 199
12.4 Options tab................................................................................................................ 203
Chapter 13 - Scenarios of user administration................................................................... 205
13.1 Without operator distinction ......................................................................................... 205
13.2 Without operator distinction, but with protected configurations........................................ 205
13.3 Without operator distinction, but with protected configurations and access protection ....... 206
13.4 With operator distinction.............................................................................................. 207
Chapter 14 - Maintenance and care.................................................................................. 208
14.1 Maintenance and care plan ......................................................................................... 208
14.2 Change the fuse ......................................................................................................... 208
14.3 Change the silica gel................................................................................................... 209
14.4 Maintenance performed by Service............................................................................... 209
Chapter 15 - Troubleshooting table................................................................................... 210
Chapter 16 - Transport, storage and disposal .................................................................... 211
16.1 Transport.................................................................................................................... 211
16.2 Storage ...................................................................................................................... 211
16.3 Disposal..................................................................................................................... 211
Chapter 17 - Appendix ..................................................................................................... 212
17.1 Glossary..................................................................................................................... 212
17.2 Technical specifications................................................................................................ 212
17.3 Order information....................................................................................................... 213
17.4 Warranty provisions..................................................................................................... 213

Safety
Chapter 1 - Safety
1.1 Basic safety information
hThese operating instructions must be read carefully and understood prior to
using the device.
hThese operating instructions must constantly be available on-site during the
entire lifespan of the device.
hAll tasks may only be performed by qualified specialist staff.
hAll tasks must be performed with caution.
hAll safety and usage instructions in this manual must be complied with.
hDamage to the device which affects safety must be dealt with immediately.
1.2 General sources of danger
Damage to persons:
Danger caused by electricity
hOnly switch the device on if there is no damage to the device and the mains
cable.
hOnly start up devices which have been professionally installed and enabled.
hBefore cleaning the device, switch it off and isolate it from the power supply.
hDo not allow any liquids to get inside the device.
hDo not spray the device to clean it.
hOnly connect the device to the power supply when it is completely dry.
hBefore replacing the fuse, isolate it from the power supply.
Damage to devices:
Damage to the device caused by improper use
hIn order to avoid damage caused by the build-up of condensation, wait at least
one hour after transporting the device from a cool area (e.g. refrigerated room)
before connecting the device to the power supply.
hDo not place the device near heat sources (e.g. heating).
hDo not expose the device to direct sunlight.
hEnsure that air is permitted to circulate freely.
hClean the device using only neutral cleaning products.
hIn case of contamination with aggressive chemicals, clean the device
immediately using a neutral cleaning agent.
9

Safety
1.3 Personnel qualications
Only staff who have received an induction may work with this device.
10

About this manual
Chapter 2 - About this manual
2.1 Typographical conventions
Lists are bulleted:
•List 1
•List 2
Instructions that must be carried out in a particular order
are numbered consecutively:
1. Step 1
2. Step 2
Instructions which do not have to be carried out in a particular order are listed with bullet
points:
hStep 1
hStep 2
Keys are represented as follows: METHODS
Display text: Alarm profile
References to other chapters are shown as follows:
See Chapter 7 Start-up.
Additional important information is shown as follows:
Note!
Additional important information.
2.2 Signicance of warning messages
If there is a risk of danger or damage, this is highlighted by warning messages. The
following warning messages are used in these documents.
Danger
This warning message warns of an immediately dangerous situation which may
lead to severe injury and death.
Warning
This warning message warns of a potentially dangerous situation which may lead
to severe injury and death.
Lists
Instructions for use
Labelling of operating and
display features
11

About this manual
Caution
This warning message warns of a potentially dangerous situation which may lead
to slight or moderate injury
Attention!
This warning message warns of damage to the device.
12

Functional specifcation
Chapter 3 - Functional specication
The density meters DS7000 work according to the frequency oscillator principle and
are very easy to use.
The density meter DS7000 can be operated as follows:
•with drying unit DS7050 (for manual filling)
•with drying unit DS7050 and peristaltic pump DS7070
•with drying unit DS7060 and peristaltic pump DS7070
The peristaltic pump DS7070 with drying unit (DS7050/DS7060) enables semi-automatic
sample filling with subsequent cleaning and drying of the frequency oscillator.
If drying unit DS7060 is connected, unplugging and plugging in is not necessary for
drying the frequency oscillator with the 3/2 way butterfly valve.
The control and entry of parameters is effected via the density meter.
The flow rate can be adjusted directly using the variable rotation speed. A time-controlled
start/stop mode enables the dosage of fixed volumes.
The DS7000 makes use of frequency oscillators consisting of glass - inspection of
the bubble-free filled frequency oscillator is possible through a window.
The sample to be measured is filled into the measurement chamber using a Luer
disposable syringe or with the help of the peristaltic pump and is tempered with the
internal Peltier temperature control.
The measurement is started by pressing the button, the density meter waits until the
sample has reached the desired temperature and automatically starts the sample
measurement.
The results are shown on the display and are saved in a data bank.
If required, the results can be printed and exported.
The density meter is intended for use in FDA-regulated areas through GLP compliance,
built-in user administration and complete network capability for simple integration into
the laboratory environment and connection to a LIMS.
All data (measured values, parameters and methods) are organised in an SQL database.
Selected results can be exported in Excel/HTML format onto a USB stick and a firmware
update can be carried out easily using a
USB stick.
3.1 Features at a glance
•Measurement according to the frequency oscillator method
•Bright touchscreen display with intuitive operation in 6 languages
•Quick, efficient measurement within minutes (typically 1-3min) plus tempering
•Very efficient, integrated Peltier tempering (10-40 °C) with high accuracy
•Drying unit and peristaltic pump including filling via integrated peristaltic pump or
syringe possible
•Sample resistance: All parts that are in contact with samples consist of glass and PTFE.
Luer or UNF connections available
•Compact powder-coated metal housing including integrated air pressure sensor
•Low costs for consumables
•Output of all important measuring data
•User administration with optional password protection and 2 authorisation levels
•Integrated SQL database for information storage
•USB interface for data export and firmware updates as well as connection of keyboard
or barcode scanner
•RS-232 interface for a serial printer
•Ethernet interface for direct connection to the PC (remote monitoring via internet
possible)
•PDF export
13

Functional specifcation
•Direct printing on PostScript-enabled network printer possible
•Complete GMP/GLP capability: Password protection, data protection, automatic hard
copy or data output in CSV format
•Corresponds to the relevant international standards such as Pharmacopoeia, OIML,
ASTM
•Calibration certificate in accordance with N.I.S.T.
•IQ/OQ/PQ start-up modes possible
•Extremely low-maintenance and long-lasting
•3 year warranty with registration
3.2 Areas of application
Determining mixture ratios and quantity control in the following industries:
Beverage industry:
Beer, condiments, fruit juice, sugar, soft drinks, spirits and dairy drinks.
Chemical industry:
Acids, bases, salts, solvents, goods receipt and final control, controlling of raw materials
and controlling of the mixture ratio.
Food industry:
Jam, confiture, honey, glucose or fructose, syrup, jelly, mustard, ketchup, sauces, soups,
convenience products, mayonnaise, ice cream, baby food, confectionary manufacturing
and dairy products.
Motor industry:
Oils, lubricants, battery acid and antifreeze.
Metalworking:
Machining coolants and their emulsion solution with water.
Petrochemicals:
Oils, lubricants, quality control of fuels and additives.
Cosmetic and pharmaceutical industry
Creams, ointments, pastes, emulsions, lotions, beauty products, perfume, flavours,
solvents, cleaners, shampoo, soaps, infusion solutions, urine and quality control
of liquid medications and active ingredients.
Viniculturists:
Grape juice, must, wine, sparkling wine and liqueur.
Sugar industry:
%Brix, purity of sugar and its primary products as well as syrup concentration.
14

Device description
Chapter 4 - Device description
This chapter will deal with the following topics:
•Device types
•Delivery content
•Device views with descriptions
•Overview of the menus
•Measuring principle
4.1 Overview of device types
Device type Devices plus optional accessories
DS7000 Density meter with drying unit DS7050. For manual filling, rinsing and
drying.
Density meter with peristaltic pump DS7070 and drying unit DS7050:
For manual and semi-automatic filling, rinsing and drying.
Density meter with peristaltic pump DS7070 and drying unit DS7060:
For manual and semi-automatic filling, rinsing and drying without
unplugging and plugging in of hose connectors.
4.2 Delivery content
•Density meter
•Mains cable
•Touchscreen pen
•Operating manual
•Peristaltic pump including hoses
•Drying unit (DS7050) including hoses
•Drying unit (DS7060) with 3/2 way butterfly valve.including hoses
no unplugging and plugging in of the hoses required.
•Standard hose set
•Acid-resistant hose set
•Network cable
•Barcode scanner (handheld scanner)
•Mini keyboard with silicon coating (USB connection)
•Printer
See order information.
Optional accessories
15

Device description
4.3 Device views DS7000
4.3.1 Front view
Fig. frontal view DS7000 with drying unit and peristaltic pump
1Drying unit DS7070
2Hose connectors
3Peristaltic pump
4Touchscreen
5Frequency oscillator for sample in-feeding
1
5
2
3
4
16

Device description
4.3.2 Rear view
Besides the mains connection and the main switch, the DS7000 has connectors for the
management of the results data and a connector for the peristaltic pump.
Fig. rear view of DS7000
1Mains switch
2Fuse
3Network connector
4Network connector:
Connection of a Laboratory Information and Management System (LIMS) or
connection to an available network. If there is internet access, remote control is
also possible.
5USB connection
Updates of device firmware can be carried out or measurement records can be
exported using the USB stick.
6Printer connection (serial interface) for direct output of the results.
7Connection for peristaltic pump DS7070
1
2
3
4567
17

Device description
4.4 Frequency oscillator with connecting pieces
The frequency oscillator has two connection pieces. One for the sample infeed and one
for discharge.
Fig. hose connections on the frequency oscillator
1Infeed piece
2Drainage piece
Standards connecting pieces and acid-resistant connecting pieces are available.
4.4.1 Standard hoses and standard connection pieces
Connectors and hoses for manual sample in-feeding using a Luer syringe:
Fig. standard connecting pieces for standard hoses and Luer syringe
1Luer syringe for sample in-feeding
2Standard hose with Luer cone for drainage
3Standard connection pieces
Hoses and hose connectors for semi-automatic sample in-feeding:
Manual sample in-feeding using
a Luer syringe
Semi-automatic sample in-
feeding
1
2
18

Device description
Fig. standard connecting pieces for standard hoses
1Standard hose with Luer cone
2Standard connecting pieces for standard hoses
4.4.2 Acid-resistant hoses and connecting pieces
Acid-resistant hoses and connecting pieces should be used for aggressive samples.
Acid-resistant hoses and connecting pieces for semi-automatic sample feeding:
Fig. acid-resistant hoses and connecting pieces
1PTFE hoses with UNF hollow bolt (brown)
2UFN connection pieces (with internal thread)
If a Luer syringe is used to feed in a sample, instead of the hose (semi-automatic sample
in-feeding), an adapter (3) must be used.
Semi-automatic sample in-
feeding
Manual sample in-feeding using
a Luer syringe
19

Device description
Fig. acid-resistant hoses and adapter for the Luer syringe
1Luer syringe
2PTFE hoses with UFN hollow bolt (brown)
3Adapter for the Luer syringe (with external thread)
4UFN connection pieces (with internal thread)
4.5 Peristaltic pump DS7070
The peristaltic pump is connected to the density meter and transports the sample and the
rinsing fluid into the frequency oscillator.
The pump is fitted with a TPE peristaltic pump hose in order to guarantee the highest
possible level of chemical resistance.
The control and entry of parameters is effected via the density meter.
The flow rate can be adjusted directly using the variable rotation speed. A time-controlled
start/stop mode enables the dosage of fixed volumes.
Fig. peristaltic pump DS7070
1
2
3
20