Metrohm 870 KF Titrino plus Operation instructions

870 KF Titrino plus
Installation and tutorial
8.870.8004EN

Metrohm AG
CH-9101 Herisau
Switzerland
Phone [phone]
Fax [phone]
[email protected]
www.metrohm.com
870 KF Titrino plus
Installation and tutorial
8.870.8004EN 11.2010 jb/dm

Teachware
Metrohm AG
CH-9101 Herisau
[email protected]
This documentation is protected by copyright. All rights reserved.
Although all the information given in this documentation has been
checked with great care, errors cannot be entirely excluded. Should you
notice any mistakes please send us your comments using the address
given above.
Documentation in additional languages can be found on
http://products.metrohm.com under Literature/Technical documenta-
tion.

￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭ Table of contents
870 KF Titrino plus ￭￭￭￭￭￭￭￭ III
Table of contents
1Introduction 1
1.1 Structure of the tutorial ....................................................... 1
1.2 Further information .............................................................. 1
1.3 Symbols and conventions .................................................... 1
2Installation 2
2.1 Setting up and connecting the instrument ........................ 2
2.2 Setting up the KF titration cell ............................................ 6
2.3 Setting up the aspiration and solvent bottle ..................... 9
2.4 Connecting the pump ......................................................... 12
2.5 Setting up tubings and tips ............................................... 13
3Tutorial 15
3.1 Configuration ...................................................................... 15
3.1.1 Switching the instrument on and off ...................................... 15
3.1.2 Setting the dialog language ................................................... 16
3.1.3 Adding and configuring a solution ......................................... 16
3.1.4 Configuring external devices .................................................. 19
3.2 Carrying out titrations ........................................................ 22
3.2.1 Creating a method for titer determination ............................. 22
3.2.2 Preparing the buret unit ......................................................... 26
3.2.3 Carrying out a titer determination .......................................... 27
3.2.4 Creating a titration method ................................................... 30
3.2.5 Determining the water content of a sample ........................... 34

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870 KF Titrino plus ￭￭￭￭￭￭￭￭ 1
1 Introduction
1.1 Structure of the tutorial
This tutorial describes the installation and the first steps with the 870 KF
Titrino plus. You will be introduced to the most important operating fea-
tures by using a titer determination with a water standard, followed by
the water determination of a sample as an example.
1.2 Further information
You will find general information about about Karl Fischer titration on the
corresponding Metrohm CD. Additional information concerning the 870
KF Titrino plus can be found in the manual.
1.3 Symbols and conventions
The following symbols and styles are used in this documentation:
Instruction step
Carry out these steps in the sequence shown.
Method Dialog text, parameter in the software
File ▶ New Menu or menu item
[Next] Button or key
Note
This symbol marks additional information and tips.

2.1 Setting up and connecting the instrument ￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭
2￭￭￭￭￭￭￭￭ 870 KF Titrino plus
2 Installation
2.1 Setting up and connecting the instrument
870 KF Titrino plus and the 803 Ti Stand

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870 KF Titrino plus ￭￭￭￭￭￭￭￭ 3
Mounting the stand
11
2
3
6.2016.070
6.2001.060
1Screw the stand plate 6.2001.060 with the accompanying four
screws tightly to the bottom of the instrument.
2Guide the support rod 6.2016.070 from above into the titration
stand and slide all the way down to the bottom.
3Screw the stand plate with the hexagon screw (hexagon key sup-
plied) firmly to the titration stand to mount the support rod.
Plugging in the mains cable
Warning
Note mains voltage.

2.1 Setting up and connecting the instrument ￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭
4￭￭￭￭￭￭￭￭ 870 KF Titrino plus
Connecting the titration stand to the MSB 1
Observe the marking on the socket.
Connecting the electrode cable
6.2104.020
The electrode cable 6.2104.020 is protected against accidental disconnec-
tion of the cable by means of a "pull-out protection" feature. If you wish
to remove the plug, then you must first retract the outer plug sleeve.
Connecting a printer or other USB instruments
Adapter 6.2151.100 is supplied for the purpose of connecting instruments
or storage media or similar that are equipped with a USB interface.
6.2151.100
A printer can be connected directly to the adapter (with a connecting
cable 6.2151.020), as can a USB keyboard or a USB storage medium (USB
Memory Stick for storing methods, etc.).
If several instruments are to be connected, then it is recommended that a
USB hub (available from speciality dealer outlets) be used and that this be
connected to the adapter 6.2151.100. The USB hub then functions as a
distributor to which several USB instruments, etc. are connected.
The cable 6.2151.120 is available as a possible alternative; using this
cable, a printer, a USB hub or an RS 232/USB Box (see next section) can be
attached directly, without an adapter, to the 870 KF Titrino plus.

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870 KF Titrino plus ￭￭￭￭￭￭￭￭ 5
Connecting a balance
Balances are equipped as a rule with a serial RS 232 interface. To connect
a balance, you require an RS 232/USB Box 6.2148.030.
6.2151.020
When a USB cable 6.2151.020 is used, then the RS 232/USB Box
6.2148.030 can be connected to the 870 KF Titrino plus by means of a
USB hub or an adapter 6.2151.100 (see preceding section).
Connect the 9-pin plug of the respective balance connecting cable to the
RS-232/1 connector. Consult the user manual for the balance or the
manual for the 870 KF Titrino plus in order to select the correct connect-
ing cable.
The parameters for the RS 232 interfaces on the instrument must match
those on the balance. For this purpose, check the user manual for the bal-
ance and the manual for the 870 KF Titrino plus.

2.2 Setting up the KF titration cell ￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭
6￭￭￭￭￭￭￭￭ 870 KF Titrino plus
2.2 Setting up the KF titration cell
Mounting the KF titration cell
6.2013.010
6.1414.030
6.1415.220
6.1903.020
1
2
3
Install the KF titration cell as follows:
1Screw the clamping ring 6.2013.010 tightly to the support rod.
2Mount the vessel lid 6.1414.030 of the KF titration cell to the sup-
port rod. Keep the locking lever pressed down until it can be released
at the desired position.
3Fasten the titration vessel 6.1415.220 (or 6.1415.250) with a stirring
bar 6.1903.020 (or 6.1903.030) inside on the vessel lid. Fold back
the holding bracket upwards while doing so. The markings on the
vessel lid and on the plastic ring must be aligned above one another.
Afterwards, press the holding bracket downward in order to mount
the titration vessel. The levers of the holding bracket must enclose
the cams of the plastic ring on the titration vessel in order to ensure
a secure hold.

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870 KF Titrino plus ￭￭￭￭￭￭￭￭ 7
4Adjust the height of the KF titration cell by pressing the locking lever.
It should almost touch the surface of the stirrer. The position can
now be fixed by readjusting the clamping ring.
Once the height of the KF titration cell has been adjusted correctly,
the entire cell can be raised and swiveled as required by pressing the
locking lever.
Filling the drying and adsorber tube
The drying tube 6.1403.040 and the adsorber tube 6.1609.010 must be
filled with molecular sieve 6.2811.000 prior to mounting. Proceed as fol-
lows:
6.1403.040 6.1609.010
11
22
33
1Insert a small plug made of cotton wadding into the bottom of the
drying tube or adsorber tube. Do not pack the cotton wadding too
tightly.
2Fill up the molecular sieve up to the ¾ level.
3Place a small plug made of cotton wadding on the molecular sieve.
Do not pack the wadding too tightly.
4Seal the drying tube or the adsorber tube with the appropriate cover.

2.2 Setting up the KF titration cell ￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭
8￭￭￭￭￭￭￭￭ 870 KF Titrino plus
Equipping the KF titration cell
6.2730.020
6.2730.010
6.0338.100
6.1403.040
6.2104.020
1
2
3
4
5
6
The KF titration cell can now be equipped as follows:
1Introduce the septum stopper 6.2730.020 (with septum inserted)
into the front opening of the vessel lid.
2Insert the O-rings of the electrode and of the drying tube into the
middle openings of the vessel lid.
3Screw the two screw nipples 6.2730.010 into the openings with the
O-rings. Do not screw them in too tightly.
4Introduce the double Pt-wire electrode 6.0338.100 into the left-hand
opening and then tighten the screw nipple until it seals.
5Screw the electrode cable 6.2104.020 tightly onto the electrode.
6Introduce the filled drying tube 6.1403.040 on the right of the elec-
trode into the remaining opening and then tighten the screw nipple
until it seals.

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870 KF Titrino plus ￭￭￭￭￭￭￭￭ 9
2.3 Setting up the aspiration and solvent bottle
Mode of operation of the 803 Ti Stand
With the 803 Ti Stand, on the one hand you can add fresh solvent (dehy-
drated methanol or a special KF solvent solution) easily at the press of a
button, while on the other hand you can aspirate the KF titration cell at
the press of a button. This can be accomplished if all of the required tub-
ings have been set up correctly and if all of the connectors have been
screwed tightly enough to seal.
The following diagram gives you an overview of the mode of operation of
the 803 Ti Stand:
1
2
3
4
A B
1. Air will be pumped into the solvent bottle (on the left) for as long as
the left-hand key A is kept pressed down.
2. The overpressure in the solvent bottle pushes fresh solvent into the
KF titration cell.
3. Air will be aspirated from the aspiration bottle (on the right) for as
long as the right-hand button B is kept pressed down.
4. The vacuum in the aspiration bottle aspirates the liquid out of the KF
titration cell and into the suction bottle.
Setting up the solvent bottle
Methanol or KF solvent is pumped out of the supply bottle by overpres-
sure and into the KF titration cell. All of the bottle top connectors must be
leak-proof for this reason.

2.3 Setting up the aspiration and solvent bottle ￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭
10 ￭￭￭￭￭￭￭￭ 870 KF Titrino plus
Metrohm offers suitable thread adapters for bottles with other threads
than GL 45.
6.1608.023
6.1819.030
6.1602.105
6.1446.040
6.1805.200
6.1609.010
6.2023.020
6.1801.120
1
2
3
4
5
6
7
To equip the solvent bottle, proceed step-by-step as follows:
1Place a thread stopper 6.1446.040 in the M6 connector (smallest
opening) of a bottle top 6.1602.105 and screw it tightly.
2Insert the long PTFE cannula 6.1819.030 into the M8 connector (sec-
ond-smallest opening) of the bottle top.
3Insert a PTFE tubing 6.1805.200 into the M8 connector of the bottle
top and screw it tightly.
4Connect a PVC tubing 6.1801.120 to the adsorber tube 6.1609.010
that is filled with the molecular sieve.
5Place the adsorber tube with the SGJ 14 standard ground joint on
the bottle top.
6Secure the SGJ 14 standard ground joint of the adsorber tube with
the SGJ clip 6.2023.020.

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870 KF Titrino plus ￭￭￭￭￭￭￭￭ 11
7Place the completely equipped bottle top 6.1602.105 on the amber
glass bottle 6.1608.023 filled with solvent/methanol or a reagent
bottle from your chemicals manufacturer and screw it tightly.
Setting up the aspiration bottle
The aspiration bottle is used as a waste container and must be sealed
against leaks.
Metrohm offers suitable thread adapters for bottles with other threads
than GL 45.
6.1801.120
6.1805.200
6.1446.040
6.1808.050
6.1446.090
6.1819.050
6.1602.105
6.1623.000
6.1608.030
2
3
1
4
5
6
7
8
To equip the aspiration bottle, proceed step-by-step as follows:
1Place a thread stopper 6.1446.040 in the M6 connector (smallest
opening) of a bottle top 6.1602.105 and screw it tightly.
2Introduce the overflow protection 6.1623.000 into the M8 connec-
tor from below (second-smallest opening) of the bottle top.

2.4 Connecting the pump ￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭
12 ￭￭￭￭￭￭￭￭ 870 KF Titrino plus
3Place the bottle top on the clear glass bottle 6.1608.030 (or on a dif-
ferent bottle with GL 45 thread) and screw it tightly.
4Place the olive 6.1808.050 in the M8 connector of the bottle top and
screw it tightly.
5Place the PVC tubing 6.1801.120 on the olive.
6Insert the stopper 6.1446.090 into the remaining opening on the
bottle top.
7Introduce the PTFE cannula 6.1819.050 into the opening of the stop-
per.
8Insert a PTFE tubing 6.1805.200 with M8 connector into the opening
of the stopper and screw it tightly.
2.4 Connecting the pump
Connecting tubings to the pump
The pump connectors of the 803 Ti Stand are located on the rear side.
12
Please ensure that you connect the tubings to the pump correctly. Pro-
ceed as follows:
1Fasten the PTFE tubing from the aspiration bottle (clear glass)
securely to the Waste connector (left-hand connector).
2Fasten the PTFE tubing from the solvent bottle (amber glass with dry-
ing tube) securely to the Solvent connector (right-hand connector).

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870 KF Titrino plus ￭￭￭￭￭￭￭￭ 13
2.5 Setting up tubings and tips
Setting up the aspiration and dosing tip
1
2
3
4
5
6.2730.030
6.1543.110
6.1543.120
1Place the three stoppers 6.2730.030 (including O-rings, but without
nipples) in the rear openings of the vessel lid.
2Screw on the dosing tip 6.1543.110 to the M8 PTFE tubing of the
solvent bottle (amber glass).
3Insert the dosing tip through the stopper in the middle rear opening
of the vessel lid.
4Screw the aspiration tip 6.1543.120 onto the M8 PTFE tubing of the
aspiration bottle (clear glass).
5Insert the aspiration tip through the stopper in the right rear opening
of the vessel lid.
The end of the tip must touch the bottom of the vessel, but it must
not inhibit the action of the stirring bar.
As an alternative to the aspiration tip 6.1543.120, the aspiration tip
6.1821.070 can also be used with an M10 screw nipple.

2.5 Setting up tubings and tips ￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭
14 ￭￭￭￭￭￭￭￭ 870 KF Titrino plus
Attaching the exchange unit
1Slide the exchange unit from the front onto the 870 KF Titrino plus
and push all the way to the rear.
It must snap in audibly.
Inserting the titration tip
1
1Insert the titration tip of the exchange unit into the remaining open-
ing at the rear on the vessel lid.
The end of the tip should be located just above the stirring bar, but is
not permitted to touch it.