User's Manual
Table Of Contents
- Table of Contents
- 1 Introduction
- 2 Safety information
- 3 Design and Function
- 4 Installation
- 4.1 Standard equipment
- 4.1.1 Scope of delivery
- 4.1.2 Unpack the titrator
- 4.1.3 Position the titrator
- 4.1.4 Adjust the angle of the terminal
- 4.1.5 Connect and disconnect the terminal
- 4.1.6 Connect the titrator to the power supply
- 4.1.7 Disconnect the titrator from the power supply
- 4.1.8 Set up the titrator for a general titration
- 4.1.8.1 Attach the titration stand to the titrator
- 4.1.8.2 Swivel the titration stand
- 4.1.8.3 Attaching and removing the titration vessel
- 4.1.8.4 Recommended positions for sensors, tubes and stirrers
- 4.1.8.5 Connect the compact stirrer
- 4.1.8.6 Connect the measuring electrode
- 4.1.8.7 Attaching the electrode arm
- 4.1.8.8 Insert and connect a burette
- 4.1.9 Connect a Rondolino TTL sample changer
- 4.1 Standard equipment
- 5 Operating the instrument
- 6 Transporting the titrator
- 7 Care and maintenance
- 8 Disposal
- 9 Technical data
Shut down the titrator from the touch screen
− Tap Home > Log out > Shut down.
ð The titrator stops running tasks and shuts down.
ð The AC adapter and the control circuit for the power button are energized. The rest of the titrator is no
longer energized.
Shut down the instrument using the power button
− Press the power button for less than 1s.
ð The titrator stops running tasks and shuts down.
ð The AC adapter and the control circuit for the power button are energized. The rest of the titrator is no
longer energized.
Shut down of the instrument in emergency situations
− Pull the plug of the power cable out of the power outlet.
5.2 Running a general titration
To explain the procedure for a titration method, a simple acid-base titration with a manual titration stand is
described. 5 ml of HCl solution (0.1 mol/L) is titrated with NaOH (0.1 mol/L).
Material
Sensor: DGi115-SC
Chemicals
For this titration you need the chemicals listed below.
• Approx. 5 ml of a HCl solution (0.1 mol/L)
• A titrant bottle containing a carbonate free NaOH solution (0.1 mol/L)
• 3 buffer solutions: pH 4.01, 7.00 and 9.21 from METTLER TOLEDO
• Approximately 50 mg potassium hydrogen phthalate
5.2.1 Preparation
§
The titrator is assembled, connected, and installed (see Installation).
§
A compact stirrer is placed in the appropriate opening on the titration stand and connected to the
STIRRER PUMP output of the titrator.
§
A USB printer is connected to port USB 1 or USB 2 of the titrator.
1 Tap Setup > Hardware > Titration Stands > Manual stand > Save.
2 Prepare the 10 ml burette for the sodium hydroxide.
3 To protect the NaOH solution against CO
2
, install a drying tube on the burette holder of the NaOH bottle.
4 Insert the burette.
ð An Info dialog appears, which allows you to initialize the burette. Burettes only have to be initialized
the first time they are used on the titrator.
5 If you use the burette for the first time on the titrator, tap Initialize.
ð The titrator initializes the burette.
6 When the burette is initialized, remove the burette from the titrator and place the burette back on the
titrator.
ð The titrator recognizes the initialized burette.
7 To create a new titrant for the burette, tap Create.
8 To assign a titrant to the burette, tap Assign .
ð The system updates the burette data and the assigned titrant appears with the suffix PnP in the
setup.
9 Attach a titration vessel to the titration stand and connect the dispensing tube for the titrant to the titration
head.
23Titration Excellence