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DP70
User Manual
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Mettler Toledo DP90, DP70 User Manual

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Page 1
Dropping Point Excellence System
DP70/DP90
User Manual
Page 2
Page 3
Table of Contents
1 Introduction 3
2 Safety information 4
3 Design and Function 6
3.5.1 Home screen ................................................................................................ 10
3.5.2 Basic elements of windows ............................................................................ 11
3.5.3 Information displayed during an analysis......................................................... 11
3.5.4 Menu structure.............................................................................................. 12
4 Installation and commssioning 14
5 Operation 18
5.5.1 Prepare samples........................................................................................... 20
5.5.1.1 Assemble the sample carrier..................................................................... 20
5.5.1.2 Prepare samples for dropping point methods.............................................. 20
5.5.1.3 Prepare samples for softening point methods ............................................. 21
5.5.1.4 Prepare powders and liquids with the sample preparation tool...................... 21
5.5.2 Run an analysis using a method .................................................................... 22
5.5.3 Run an analysis using a manual method......................................................... 24
5.5.4 Stop an analysis ........................................................................................... 25
6 Maintenance 26
6.1.1 Clean the housing and control panel ............................................................... 26
6.1.2 Remove, clean and reinstall insulation glass and glass plate ............................. 26
6.1.2.1 Remove and reinstall the lid ..................................................................... 27
6.1.2.2 Remove insulation glass and glass plate ................................................... 28
6.1.2.3 Clean the insulation glass and glass plate ................................................. 28
6.1.2.4 Reinstall insulation glass and glass plate................................................... 29
6.1.3 Remove condensation from the measuring cell (DP90 only).............................. 29
7 Technical data 31
Table of Contents 1Dropping Point Excellence System
Page 4
Table of Contents2 Dropping Point Excellence System
Page 5
Introduction 3Dropping Point Excellence System
1 Introduction
Thank you for choosing a METTLER TOLEDO Excellence Dropping Point System. The Excellence Dropping Point System is an easy-to-operate instrument for automated and accurate measurements of the following physical values:
• Dropping point
• Softening point
About this document
This document provides you with the information you need to get started with your METTLER TOLEDO Excellence Dropping Point System.
For a comprehensive description of the instrument and its functions, refer to the Operating Instructions, supplied as PDF file on the CD.
The instructions in this document refer to Excellence Dropping Point Systems running firmware version 2.10 or higher.
If you have any additional questions, contact your authorized METTLER TOLEDO dealer or service represen­tative.
u www.mt.com/contact
Conventions and symbols
Refers to an external document.
Note
for useful information about the product.
Elements of instructions
§
Prerequisites
1 Steps 2 ...
ð Intermediate results
ð Results
Page 6
Safety information4 Dropping Point Excellence System
2 Safety information
• Read and understand the information in this User Manual before you use the instrument.
• Keep this User Manual for future reference.
• Include this User Manual if you pass on the instrument to other parties.
If the instrument is not used according to the information in the Operating Instructions or if it is modified, the safety of the instrument may be impaired and Mettler-Toledo GmbH assumes no liability.
For a comprehensive description of the instrument and its functions, refer to the Operating Instructions, supplied as PDF file on the CD.
2.1 Definitions of signal words and warning symbols
Safety notes are marked with signal words and warning symbols. These show safety issues and warnings. Ignoring the safety notes may lead to personal injury, damage to the instrument, malfunctions and false results.
Signal words
WARNING
for a hazardous situation with medium risk, possibly resulting in death or severe injury if not avoided.
CAUTION
for a hazardous situation with low risk, resulting in minor or moderate injury if not avoided.
NOTICE
for a hazardous situation with low risk, resulting in damage to the instrument, other material damage, malfunctions and erroneous results, or loss of data.
Warning symbols
Electrical shock Hot surface
2.2 Product specific safety notes
Intended use
This instrument is designed to be used in laboratories by trained staff. The dropping point instrument is intended for performing measurements to determine the dropping point and the softening point.
Any other type of use and operation beyond the limits of technical specifications without written consent from Mettler-Toledo GmbH is considered as not intended.
Responsibilities of the instrument owner
The instrument owner is the person that uses the instrument for commercial use or places the instrument at the disposal of the staff. The instrument owner is responsible for product safety and the safety of staff, users and third parties.
METTLER TOLEDO assume that the instrument owner provides the necessary protective gear, appropriate training for the daily work and for dealing with potential hazards in their laboratory.
This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to Part 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 can radiate radio frequency energy and, if not installed and used in accordance with the instruction manual, may cause harmful interference to radio communications. Operation of this equipment in a residential area is likely to cause harmful interference in which case the user will be required to correct the interference at his own expense.
Protective clothing
Gloves that protect from contact heat.
Page 7
Safety information 5Dropping Point Excellence System
Safety notes
WARNING
Danger of death or serious injury due to electric shock!
Contact with parts that contain a live current can lead to injury and death. 1 Only use a METTLER TOLEDO power cable and AC adapter designed for your
instrument. 2 Connect the power cable to a grounded power outlet. 3 Keep all electrical cables and connections away from liquids. 4 Replace damaged power cables and AC adapters immediately.
CAUTION
Danger of burns due to hot surfaces!
The oven can reach temperatures that are high enough to cause burns and heats up parts contained in the oven, the lid and the back of the instrument.
1 Never touch a sample you have just removed from the furnace (capillary tubes, glass
tubes, slides, sample cups or crucibles). 2 Do not operate the instrument without the lid. 3 Never touch the furnace, furnace lid or the back of the device before the instrument
has cooled down.
NOTICE
Danger of malfunction due to overheating of the instrument!
If the cooling is impeded, the instrument can overheat and malfunction. 1 Do not stack paper on top of the instrument. 2 Do not block the ventilation openings in the back and at the bottom of the instrument. 3 Respect the clearance around the instrument specified in the installation instructions.
NOTICE
Danger of damage to the instrument due to incorrect parts!
Using incorrect parts with the instrument can damage the Instrument or cause the instrument to malfunction.
− Only use parts supplied with the instrument, listed accessories and spare parts from
METTLER TOLEDO.
NOTICE
Danger of damaging the touch screen with pointed or sharp objects!
Pressing on the touch screen with pointed or sharp objects may damage it.
− Operate the touch screen by applying gentle pressure with the pad of your finger.
Page 8
Design and Function6 Dropping Point Excellence System
3 Design and Function
3.1 DP70 instrument overview
1
3
4
5 6
7 8
9
2
Nr. Name Function
1
Protective lid Covers the opening through which the samples are inserted.
2
Safety sign for hot surfaces
The safety signs warns that the lid, the handle of the protective lid and the handle of the sample carrier can be hot enough to cause burns.
3
Lid Protects the user from hot parts and protects the furnace from dust. The
lid allows access to the measuring cell for maintenance tasks.
4
Housing The cylindrical part of the housing contains the measuring cell and the
furnace.
5
Power indicator light Shows the status of the instrument:
• Power indication light on: The instrument is on.
• Power indication light off: The instrument has shut down.
• Power indication light fades on and off: The instrument is on and the
screen saver is active.
6
Power button The power button has the following functions:
• Start the instrument.
• Shut down the instrument.
• Activate the screen saver if the instrument is on.
• Deactivate the screen saver.
7
USBA socket Is used to insert a USB stick if you want to export data to the USB stick or
import data from the USB stick.
8
Slot for SD cards Is used to insert an SD card if you want to export data to the SD card.
9
Control panel Consists of an integrated touchscreen and the four hard keys.
See also
2 Control panel layout}Page9 2 Clean the instrument}Page26 2 DP90 instrument overview}Page7
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Design and Function 7Dropping Point Excellence System
3.2 DP90 instrument overview
The DP90 consists of two units: the control unit and the measuring cell. The measuring cell can be placed in a refrigerator or freezer if temperatures below the ambient temperature are required.
Control unit
1 2
3 4
5
Nr. Name Function
1
Power indicator light Shows the status of the instrument:
• Power indication light on: The instrument is on.
• Power indication light off: The instrument has shut down.
• Power indication light fades on and off: The instrument is on and the
screen saver is active.
2
Power button The power button has the following functions:
• Start the instrument.
• Shut down the instrument.
• Activate the screen saver if the instrument is on.
• Deactivate the screen saver.
3
USBA socket Is used to insert a USB stick if you want to export data to the USB stick or
import data from the USB stick.
4
Slot for SD cards Is used to insert an SD card if you want to export data to the SD card.
5
Control panel Consists of an integrated touchscreen and the four hard keys.
Page 10
Design and Function8 Dropping Point Excellence System
Measuring cell
7
1
5
6
2
3
4
Nr. Name Function
1
Safety sign for hot surfaces
The safety signs warns that the lid, the handle of the protective lid and the handle of the sample carrier can be hot enough to cause burns.
2
Protective lid Covers the opening through which the samples are inserted.
3
Lid Protects the user from hot parts and protects the furnace from dust. The
lid allows access to the measuring cell for maintenance tasks.
4
Housing Contains the measuring cell and the furnace.
5
Cable (furnace signal) Transmits signals needed to control the furnace.
6
Cable (camera signal) Transmits signals from the camera in the measuring cell to the control
unit.
7
Safety sign for hot surfaces
The safety sign warns that the back of the measuring cell can be hot enough to cause burns.
See also
2 Clean the instrument}Page26
3.3 Connections at the back of the DP70 and DP90
DP70
1 2 3 4
5
DP90 (control unit)
1 2 3 4
6 7
Nr. Name Function
1
USB type A ports Connection for printers, mouse, keyboards, or USB sticks
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Design and Function 9Dropping Point Excellence System
Nr. Name Function
2
Ethernet connection Connection to a network for example for a network printer or network
storage.
3
USB type B port Used for service purposes
4
Power supply connection Socket for AC adapter
5
Safety label for hot surfaces
The safety label warns that the back of the instrument can be hot enough to cause burns.
6
Port (furnace signal) Data transfer between control unit and measuring cell.
7
Port (camera signal) Data transfer between control unit and measuring cell.
3.4 Control panel layout
3
1
2
3
3
4
Nr. Name Function
1
Info The Info key opens a window with general information about the
instrument.
2
Touch screen The touch screen displays information and can be used to enter infor-
mation.
3
Home The home key opens the home screen.
4 Reset The Reset key stops the task that is currently running.
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Design and Function10 Dropping Point Excellence System
3.5 User interface
3.5.1 Home screen
Home
Log out
Manual
Setup
Results
Methods
User data Start
Task
Temperature control
1
2
3
4
567
8
9
10
11
Nr. Name Function
1 Furnace monitor area The furnace monitor area shows the current temperature of the furnace. If
you tap the furnace monitor area, you can switch to a full display of the furnace temperature.
2 Shortcut area The shortcut area holds up to twelve shortcuts for frequently used
methods.
3 Indirect shortcut
An indirect shortcut for a method opens the window Start analysis. An indirect shortcut for a manual method opens the window Manual method.
4 Direct shortcut A direct shortcut starts the analysis directly and opens the analysis
window.
5
Start Opens the window Start analysis of the last analysis that was run.
6
User data Opens the window User data with information about the user that is
logged in.
7
Log out Logs the current user out and opens the window Login window.
8
Manual Opens the window Manual operations, where you can start a manual
operation.
9
Setup Opens the window Setup where you can configure the hardware and the
resources.
10
Results
Opens a window with the results of the last analysis.
11
Methods Opens the window Methods where you select an existing method or
create a new the method.
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Design and Function 11Dropping Point Excellence System
3.5.2 Basic elements of windows
Manual method
Task
Method type
Start temperature
Waiting time
Heating rate
End temperature
Ramp to start temperature
Back AddToHome Convert Start
Dropping point
1
3
2
5
4
6
Nr. Name Function
1 Task
The task panel shows if a task is running or not. Blue: No task is running. Yellow: A task is running.
If you tap Task while a task is running, the analysis window of the running task opens.
2
Scroll bar The scroll bar is visible if the content of the window extends beyond the
viewable area. You can use either the arrows or the slider to move the viewable area of the screen up or down.
To page up and down, tap the area below or above the slider.
3
Footer Up to five buttons are located in the footer. Which buttons are visible
depends on the context of the open window.
4
Body The body of the window shows information like the video of an ongoing
analyses or items like shortcuts or parameters.
5
Navigation The navigation shows the path to the open window.
6
Title bar The title bar shows the name of the open window.
3.5.3 Information displayed during an analysis
Information on the current analysis is displayed in the analysis window. The information is constantly updated and includes the following data.
Task
Remaining time
Temperature
Mean value, s
Temp. difference
SP
Cup
comments
Analysis
comment
Diagram
Manual method
Start
T(start) reached
1 2
3
4
5
6
7
8
9
Nr. Name Description
1
Analysis status bar The analysis status bar displays the various positions reached during the
analysis: Go to T(start), T(start) reached, Waiting time, Ramp,
Isothermal, Create report
2 Remaining time
Remaining time until the end of the analysis. The time indicated includes the waiting time, the duration of temperature ramp and that of the isothermal segment.
3 Temperature
Current temperature reading inside the measuring cell.
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Design and Function12 Dropping Point Excellence System
Nr. Name Description
4 Mean value, s Mean value, s: current mean value of all the temperature readings of the
individual cups and the standard deviation
5 Temp. difference
Difference of the temperatures measured for the 2cups
6 DP
SP
Method type of the running analysis
DP: Dropping point SP: Softening point
7
Detection line The dotted line shows where the softening point is detected.
8
Evaluation window Shows the region where the softening point is detected.
9
Ruler Shows the distance to the cup outlet in[mm]
3.5.4 Menu structure
Methods
The menu Methods has no submenus.
Results
The menu Results has no submenus.
Setup
The menu Setup has the following submenus.
Calibration substances
– –
Hardware Peripherals Printer
PC settings
Network
Network storage
SOAP Settings
Temperature sensor
–
User settings Language
–
Screen
–
Beep
–
Shortcuts
–
Keyboards
–
Global settings System Identification
Date / Time
Header and footer
Data storage
User management User
Account Policies
Behavior of analyses and resources
Analysis sequence settings
Action on expiration of adjustment data
Furnace
Adjustment
– –
Mainten. & Service Import / Export
–
Reset to factory settings
–
Update
–
Delete data on SD card
–
Manual
The menu Manual has the following submenus.
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Design and Function 13Dropping Point Excellence System
• Manual method
• Furnace power off
• Set furnace temperature
• Furnace inside view
Page 16
Installation and commssioning14 Dropping Point Excellence System
4 Installation and commssioning
4.1 Scope of Delivery
Part Order number DP70 DP90
DP70 Dropping Point System – • –
DP90 Dropping Point System – – •
Power supply unit, 120 W 30298362 • •
Power cable (country specific) Country-specific • •
Protective film for Touchscreen 51143540 • •
SDCard 2GB 51192017 • •
Ethernet Cable RJ45 51191860 • •
DP accessories box (complete) containing:
• Sample carrier
• Handle of the sample
• Cups, dropping point, chromium
plated brass (ø 2.8 mm, set 2 pcs., ASTMD6090-99)
• Cups, softening point, chromium
plated brass (ø 6.35 mm, set 2 pcs., ASTMD6090-99)
• Cup lid (2pcs.)
• Collector glass (6 pcs.)
• Steel ball 11/32'' (2 pcs., ø
8.7mm, 2.77 ± 0.02g
• Sample preparation tool DP
• Spatula
• Tamping rod
• Rod
• Sample carrier stand
• Calibration standard Benzoic acid
(5 g)
51143740 • •
Calibration substance lubricating grease
30024217 • •
Page 17
Installation and commssioning 15Dropping Point Excellence System
Part Order number DP70 DP90
User Documentation – • •
Quick Guide – • •
Declaration of conformity – • •
Test report – • •
4.2 Unpack the instrument
1 Remove the instrument (and accessories) from the protective packing material. 2 Store the packing material for later transport over long distances. 3 Check whether you received all parts listed in the scope of delivery. 4 Inspect the parts visually for flaws or damage. 5 If parts are missing or damaged, report it immediately and file a freight claim if needed.
4.3 Position the instrument
The instrument has been developed for indoor operation in a well-ventilated area. The following site requirements apply:
• The ambient conditions are within the limits specified in the technical data.
• No powerful vibrations
• No direct sunlight
• No corrosive gas atmosphere
• No explosive atmosphere
• No powerful electric or magnetic fields
DP70 and DP90 control unit
1 Place the instrument on a level surface. 2 Make sure that there are at least 15 cm clearance in front, above and behind the instrument. 3 Make sure that nothing blocks the ventilation openings at the bottom and the back of the instrument.
DP90 Measuring cell
1 If you run an analysis at a temperature equal or above room temperature, follow the instructions for the
DP90 control unit.
2 If you run an analysis at a temperature below room temperature, place the measuring cell in a refrig-
erator or a freezer.
METTLER TOLEDO recommends a top loading freezer because a top loading freezer has better temperature stability and easier sample preparation. With a front loading freezer the temperature cannot be stabilized quickly when you open the door and the collector glasses could fog up and freeze.
4.4 Connect measuring cell and control unit (DP90 only)
1 Connect the cable (furnace signal)(1) of the measuring cell with the port (furnace signal)(3) on the
control unit.
2 Connect the cable (camera signal)(2) of the measuring cell with the port (camera signal)(4) on the
control unit.
Page 18
Installation and commssioning16 Dropping Point Excellence System
3 41 2
4.5 Connect the instrument to the power supply
The AC adapter is suitable for all supply line voltages ranging from 100...240VAC and 50/60Hz.
WARNING
Danger of death or serious injury due to electric shock!
Contact with parts that contain a live current can lead to injury and death. 1 Only use a METTLER TOLEDO power cable and AC adapter designed for your
instrument.
2 Connect the power cable to a grounded power outlet. 3 Keep all electrical cables and connections away from liquids. 4 Replace damaged power cables and AC adapters immediately.
NOTICE
Danger of damage to the AC adapter due to overheating!
If the AC adapter is covered or in a container, it is not sufficiently cooled and overheats. 1 Do not cover the AC adapter. 2 Do not put the AC adapter in a container.
1 Install the cables in such a way that they cannot be damaged or interfere with operation. 2 Insert the plug of the power cable in the socket of the AC adapter.
3 Insert the plug of the AC adapter in the socket 24V at the back of the instrument.
4 Insert the plug of the power cable in a grounded power outlet that is easily accessible.
See also
2 Start up the instrument}Page18 2 Log in}Page18
Page 19
Installation and commssioning 17Dropping Point Excellence System
4.6 Disconnect the instrument from the power supply
§
The instrument has shut down.
1 Pull the plug of the power cable out of the power outlet.
2 Pull the plug of the AC adapter out of the socket 24V at the back of the instrument.
Page 20
Operation18 Dropping Point Excellence System
5 Operation
5.1 Start up the instrument
§
The instrument is connected to the power supply
§
No samples are inserted.
1 Press .
ð METTLER TOLEDO logo appears and the fan starts. ð The screen darkens and the fan stops.
ð The screen Starting up the system appears and the white light flashes.
ð The home screen or the window Login appears.
2 Login if the window Login appears.
See also
2 Log in}Page18
5.2 Log in
Log in with user name
§
The window Login is open.
1 In the text field Name tap and select your user name from the list.
2 Tap Login.
ð The home screen opens.
Log in with user name and password
§
The window Login is open.
1 In the text field Name, select your user name from the list or enter your user name.
2 In the text field Password, enter your password.
3 Tap Login.
ð The home screen opens.
5.3 Shut down the instrument
NOTICE
Danger of losing data due to wrong shut down procedure.
If you press longer than 5seconds, the instrument performs a forced shut down. If an analysis is running, it will be terminated prematurely and any data produced during this time will be lost.
− Do not press for more than 5seconds unless you need to force the instrument to shut down.
Shut down the instrument using the touch screen
§
You are on the home screen.
§
No task is running.
§
No samples are inserted.
1 Press Log out.
ð The Login window opens.
2 Press Shut down.
ð The screen Shutting down the system appears and then the screen turns dark.
ð An acoustical signal informs you that you are logged out and the instrument has shut down.
ð The AC adapter and the control circuit for the power button are energized. The rest of the instrument is no
longer energized.
Page 21
Operation 19Dropping Point Excellence System
Shut down the instrument using the power button
§
No task is running.
§
No samples are inserted.
− Press for 1…4seconds.
ð The screen Shutting down the system appears and then the screen turns dark.
ð An acoustical signal informs you that you are logged out and the instrument has shut down.
ð The AC adapter and the control circuit for the power button are energized. The rest of the instrument is no
longer energized.
Forced shut down
The instrument should only be shut down in this way if it is absolutely necessary.
1 Press for more than 5seconds.
ð The instrument performs a forced shut down. ð If an analysis is running, it is terminated prematurely and any data produced during this time is lost. ð The AC adapter and the control circuit for the power button are energized. The rest of the instrument
is no longer energized.
2 Remove all samples.
Shut down of the instrument in emergency situations
− Pull the plug of the power cable out of the power outlet.
5.4 Lock and unlock the instrument
Running tasks continue when you lock the instrument but only messages for critical errors are displayed.
• Only instruments with password protection can be locked.
• Only the user that locked the instrument can unlock the instrument.
Lock the instrument
1 Go to Home.
2 Tap Lock.
ð The window Instrument locked opens and displays the name of the user that is logged in.
Unlock the instrument
1 Enter the password.
2 Tap Login.
ð The instrument is unlocked.
End a task on a locked instrument
− On the control panel, press the button Reset.
ð The task is ended but the instrument remains locked.
Page 22
Operation20 Dropping Point Excellence System
5.5 Determine dropping points or softening points
5.5.1 Prepare samples
5.5.1.1 Assemble the sample carrier
The parts marked are:
• B: closed cup lid with vent hole prevents spilling
and furnace contamination in case of expanding sample
• C: standard compliant cup for dropping or
softening point determinations
• D: disposable glass collector
The sample carrier keeps all parts together and can be placed into the stand F which is delivered with the instrument.
1 Assemble the cup lid (B) , the cup (C) and the glass collector (D) as shown in the picture.
2 Place the assemble unit into the sample carrier making sure the glass collector (D) rests in the base (E)
and each cup lid (B) sits the hole (A).
3 To keep the furnace clean, make sure that cups, cup lids, and sample carrier are free of residue.
5.5.1.2 Prepare samples for dropping point methods
This section describes the sample preparation for the following types of substances:
• Original sample of a pasty consistency
• Pre-melted samples
• Dropping points below room temperature (DP90, cooled)
Edible fats, for instance, can occur in various modifications with different dropping points. To obtain repro­ducible and comparable measured values with pre-melted samples, it is absolutely essential to ensure that the same conditions are maintained during heating and cooling. This is of particular importance when several labs compare measured values.
Original sample of a fatty consistency (e.g. lubricating grease)
1 Place some sample on a smooth, clean surface (e.g. glass plate). 2 Press the cup into the sample until some sample flows out of the opening. Make sure no air bubbles are
enclosed. 3 Smooth off surface and drop opening with a spatula. 4 Assemble the sample carrier (with cup, cup lid and collector glass).
Pre-melted samples (e.g. paraffin)
1 Place the sample cup on a smooth surface (glass, ceramic or plastic plate) and pour in the melted
sample. 2 Place the plate, the sample carrier (disassembled), cup with sample, cup lid and collector glass into the
cooling chamber. Leave all parts in long enough for the sample to solidify in the cup at a defined
temperature and time period. The temperature depends on the sample (e.g. at 25 °C, at 5 °C in a refrig-
erator or at –18 °C in a deep freezer). 3 After a specified time, assemble the cold parts.
For dropping points below room temperature (DP90, cooled, e.g. liquids)
Note: Do not hold the sample cup in your bare hands, use tweezers or hold the collector glass.
1 Place the sample cup on a smooth surface (glass, ceramic or plastic plate). 2 Place the plate, the sample carrier (disassembled), cup with sample, cup lid and collector glass into the
cooling chamber. Leave all parts in long enough for the sample to solidify in the cup at a defined
temperature and time period. The temperature depends on the sample (e.g. at 25 °C, at 5 °C in a refrig-
erator or at –18 °C in a deep freezer).
Page 23
Operation 21Dropping Point Excellence System
3 Pour in the melted sample.
4 After a specified time, assemble the cold parts.
5.5.1.3 Prepare samples for softening point methods
This section describes the sample preparation for the following substance: pitch.
1 Following for example, ASTM D 3104, cut up pitch into 6–12 mm pieces and melt about 25 ml of these
in a 50 ml beaker. Note: The temperature must never rise more than 50 °C above the expected softening point.
2 Place the necessary number of sample cups (usually two) on a brass plate (purchased locally) at room
temperature. 3 Slightly overfill several 6.35 mm sample cups on the brass plate with the liquid pitch. 4 After cooling, level the surface with a hot knife.
5.5.1.4 Prepare powders and liquids with the sample preparation tool
1.
Base
2.
Positioning disc
3.
Funnel
4.
Spring
5.
Screw
6.
Handle
7.
Tamping rod
Preparing powders
1 Put four metal cups into the base (1) and place the positioning disc (2) on top, followed by the funnel
(3).
2 Fill the sample into the funnel (3) and slide a bit of the sample with the spatula into the opening above
the cup. 3 Fill the cup with enough sample until the fill height is even with the upper edge.
4 Press in the sample firmly using the round end of the tamping rod (7).
5 Turn the positioning disc and repeat steps 1-4 for the other cups.
ð All cups are partially filled 6 Position the funnel over the first cup again and press in the sample firmly with the flat end of the
tamping rod. An excess of about 1 mm should remain above the upper edge. 7 Turn the positioning disc to the next cup and repeat step 6 for the other cups. While turning the
positioning disc, the excess sample is removed. 8 To access the cups, turn the funnel to a position between cups and press the spring. 9 Lift off the positioning disc and the funnel. ð The cups are filled with the sample and ready for analysis.
Preparing liquids
Use the sample preparation tool without the funnel to prepare liquid samples. 1 Put four metal cups into the base and place the positioning disc on top. 2 Pour the molten substance directly into the cups. The fill height should be slightly above the edge of the
positioning disc.
ð A convex meniscus should be visible.
Page 24
Operation22 Dropping Point Excellence System
3 When the sample has reached a suitable consistency (after some cooling), remove the excess with the
spatula. The sample should be even with the positioning disc.
4 Lift off the positioning disc. ð The cups are filled with the sample and ready for analysis.
5.5.2 Run an analysis using a method
The following procedure shows you how to run an analysis using an indirect shortcut. The procedure is based on an example of a softening point determination. Some steps may differ if the method you use is configured differently.
Aside from an indirect shortcut you can also start a method using a direct shortcut or the button Methods on the home screen. Some differences are described after the example below.
§
At least one indirect shortcut of a method is defined.
§
The samples are prepared.
Home
Log out
Manual
Setup
Results
Methods
User data Start
Task
Temperature control
1
1 Select the indirect shortcut(1) of the method you
want to run. ð The method window opens.
Start analysis
Task
Method ID
Title
Method comment
Analysis comment
AddToHome
Cup
comments
Start
Softening point
A0005
Grease
2 If needed, enter comments to the method.
3 Tap Start.
ð The window Start analysis opens.
4 If needed, enter comments to the analysis or the
samples.
Task
Remaining time
Temperature
Mean value, s
Temp. difference
SP
Cup
comments
Analysis
comment
Diagram
A0005: Grease
T(start) reached
1
Start
5 Tap Start.
ð The analysis window opens. ð The instrument heats up to the start
temperature.
6 Wait until T(start) reached(1) is displayed.
Page 25
Operation 23Dropping Point Excellence System
2
1
3
7 Open the protective lid(1) and hold it open. 8 Insert the sample carrier(2) in the opening(3). 9 Release the protective lid(1).
ð The protective lid closes.
10 Tap Start.
ð The waiting time starts.
ð The instrument performs the measurement.
Status
Back Print
Select
analysis
Data
Define
outliers
Task
included
included
Mean value Difference
Results
Softening point
70.1 °C
70.3 °C
70.2 °C
0.2 °C
Cup
11 Wait until the results are displayed.
12 CAUTION Danger of burns due to the hot handle
of the sample carrier and hot samples! Do not
remove the sample carrier and the samples until
the instruments has cooled down or wear gloves
that protect from contact heat when you remove the
sample carrier or handle the samples. 13 Let the samples cool down and dispose of them
according to the safety data sheet of the substance
that you measured.
14 Tap Back.
ð The home screen opens.
Start the analysis using the button Methods
1 Go to Home > Methods and select the method you want to run.
ð The method window opens. 2 Continue with step 2 of the procedure for an indirect shortcut.
Start the analysis using a direct shortcut
1 Go to Home and select the direct shortcut of the method you want to run.
ð The analysis window opens.
ð The instrument heats up to the start temperature.
2 Continue with step 6 of the procedure for an indirect shortcut.
Manual determination of a dropping point or softening point
§
The method is configured for manual determination of the dropping point or softening point.
§
You have started an analysis as described above.
§
The analysis window is open.
Task
Remaining time
Temperature
Mean value, s
Temp. difference
SP
Cup
comments
Analysis
comment
Diagram
Stop
Ramp
A0005: Grease
1 For dropping point determinations, tap Set when
the first drop falls from the cup.
ð The temperature for the dropping point is
displayed below the capillary.
2 For softening point determinations, tap Set when
the substance starts to leave the cup.
ð The start temperature for the softening point is
displayed below the capillary.
3 For softening point determinations, tap Set when
the substance reaches the detection line.
ð The end temperature for the softening point is
displayed below the capillary.
4 Finish the analysis as described in the procedure for an indirect shortcut.
Page 26
Operation24 Dropping Point Excellence System
5.5.3 Run an analysis using a manual method
The following procedure shows you how to run an analysis using an indirect shortcut. The procedure is based on an example of a softening point determination. Some steps may differ if the manual method you use is configured differently.
Aside of an indirect shortcut you can also start a manual method using a direct shortcut or the button
Manual method. Some differences are described after the example below.
Start an analysis using an indirect shortcut
§
At least one indirect shortcut of a manual method is defined.
§
The samples are prepared.
Home
Log out
Manual
Setup
Results
Methods
User data Start
Task
Temperature control
1
1 Select the indirect shortcut(1) of the manual
method you want to run.
ð The window Manual method opens.
Manual method
Task
Method type
Start temperature
Waiting time
Heating rate
End temperature
Ramp to start temperature
Back AddToHome Convert Start
Softening point
2 If needed, enter comments to the method.
3 Tap Start.
ð The analysis window opens. ð The instrument heats up to the start
temperature.
Task
Remaining time
Temperature
Mean value, s
Temp. difference
SP
Cup
comments
Analysis
comment
Diagram
Manual method
T(start) reached
1
Start
4 If needed, enter comments to the analysis or the
samples.
5 Wait until T(start) reached(1) is displayed.
2
1
3
6 Open the protective lid(1) and hold it open. 7 Insert the sample carrier(2) in the opening(3). 8 Release the protective lid(1).
ð The protective lid closes.
9 Tap Start.
ð The waiting time starts. ð The instrument performs the measurement.
Page 27
Operation 25Dropping Point Excellence System
Status
Back Print
Select
analysis
Data
Define
outliers
Task
included
included
Mean value Difference
Results
Softening point
70.1 °C
70.3 °C
70.2 °C
0.2 °C
Cup
10 Wait until the results are displayed.
11 CAUTION Danger of burns due to the hot handle
of the sample carrier and hot samples! Do not
remove the sample carrier and the samples until
the instruments has cooled down or wear gloves
that protect from contact heat when you remove the
sample carrier or handle the samples. 12 Let the samples cool down and dispose of them
according to the safety data sheet of the substance
that you measured.
13 Tap Back.
ð The home screen opens.
Start the analysis using the button Manual method
1 Go to Home > Manual > Manual method.
ð The window Manual method opens with the setting of the last manual method you started with the
button Manual method.
2 Continue with step 2 of the procedure for an indirect shortcut.
Start the analysis using a direct shortcut
1 Go to Home and select the direct shortcut of the manual method you want to run.
ð The analysis window opens.
ð The instrument heats up to the start temperature.
2 Continue with step 4 of the procedure for an indirect shortcut.
5.5.4 Stop an analysis
If you stop a running analysis, you still have the opportunity to save the results up to the point of inter­ruption.
§
An analysis is running in the analysis window.
1 Tap Stop or press the key Reset.
ð The analysis is interrupted.
ð The message Do you want to stop the analysis? is displayed.
2 To stop the analysis, tap Yes.
ð The analysis is stopped.
ð The message Do you want to save the results? is displayed.
3 To save and print the results, tap Yes.
ð The results are save and printed according to you setting.
4 If you do not want to save the results, tap No.
ð The homescreen opens.
Page 28
Maintenance26 Dropping Point Excellence System
6 Maintenance
This chapter describes the maintenance measures for the DP70 and DP90 instruments. In this chapter you find descriptions of the maintenance tasks you should perform on your instrument. Any
other maintenance tasks need to be performed by a service technician that has been qualified by METTLER TOLEDO.
Do not open the housing of the instrument; it does not contain any parts that can be maintained, repaired or replaced by the user. If you experience problems with your instrument, contact your authorized METTLER TOLEDO dealer or service representative.
METTLER TOLEDO recommends that a preventive maintenance and calibration certification is done at least once a year through your authorized METTLER TOLEDO dealer or service representative.
u www.mt.com/contact
6.1 Clean the instrument
CAUTION
Danger of injuries due to hot surfaces
If the instrument is accidently turned on during the cleaning, hot surfaces can cause burns.
1 Before you clean the instrument, shut down the instrument and disconnect the power
cable.
2 Before you clean the instrument, make sure the instrument has cooled off to room
temperature.
NOTICE
Danger of damage to the instrument due to inappropriate cleaning methods!
Attempts to remove debris from the camera lens can damage the camera lens.
− If debris is on the camera lens, contact your authorized METTLER TOLEDO dealer or service representative.
See also
2 Clean the insulation glass and glass plate}Page28
6.1.1 Clean the housing and control panel
To keep the instrument looking good and functioning properly, clean the housing and control panel as needed.
§
The instrument is switched off and disconnected from the power supply.
§
The instrument has cooled off to room temperature.
§
All samples have been removed.
1 Remove any loose particles from the housing and control panel with a fine brush. 2 On a DP70, turn the metal lid to the position.
ð No cleaning agent can enter the instrument. 3 Moisten a soft cloth with water and a mild detergent. 4 Clean the housing with the soft, slightly moist cloth. 5 Dry off any residual moisture. 6 On a DP70, turn the metal lid to the position. 7 Reconnect the instrument to the power supply and switch on the instrument. ð The instrument housing is clean and the instrument ready for your next analyses.
6.1.2 Remove, clean and reinstall insulation glass and glass plate
In order to prevent false readings, the insulation glass and glass plate should be checked regularly and cleaned as needed. Particles and smudges can block the light or cause bothersome spots in the pictures.
Page 29
Maintenance 27Dropping Point Excellence System
You can check the condition of the two glass plates by viewing the furnace from the inside. If the light
appears homogeneous and bright, then you do not have to undertake any further action.
See also
2 View the inside of the furnace}Page29
6.1.2.1 Remove and reinstall the lid
DP70
The lid has three different markings on it.
• Filled circle: You can insert the sample carrier.
• Open circle: The furnace is protected and you cannot insert the sample carrier.
• Wrench: You can remove the lid for cleaning and servicing.
Lid markings and positions
Filled circle position Open circle position Wrench position
§
The instrument has shut down and is discon­nected from the power supply.
§
The instrument has cooled off to room temperature.
§
The sample carrier has been removed.
1 Gently press the release latch inside the
opening(2) with a long object(1) such as a screw driver and turn the lid(3) to .
ð The lid pops up slightly.
1
2
3
2 Lift out the screw driver and insert your finger in
the recess(1) at the top of the measuring cell and lift off the lid(2) with both hands.
1
2
3 To reinstall the lid, replace the lid and turn it to
or to .
Page 30
Maintenance28 Dropping Point Excellence System
Remove and reinstall the lid on a DP90
§
The instrument has shut down and is discon-
nected from the power supply.
§
The instrument has cooled off to room
temperature.
§
The sample carrier has been removed.
1 Insert a long object such as a screw driver(3)
into the opening(2) at the back of the
measuring cell. 2 Push the screw driver into the opening until the
latch releases the lid.
ð The lid(1) pops up slightly. 3 Pull the screw driver out of the opening. 4 Lift off the lid(1) with both hands.
ð Insulation glass and glass plate are
accessible.
2 31
5 To reinstall the lid, put the lid onto the measuring
cell and push it down until the clamps click in
place.
6.1.2.2 Remove insulation glass and glass plate
§
The instrument has shut down and is discon-
nected from the power supply.
§
The lid has been removed.
1 To remove the insulation glass, press the metal
latch(1) and lift the sample carrier guide(2)
with the insulation glass(3) carefully out of the
recess.
1 2
3
2 To remove the glass plate, pull the metal
latch(1) out slightly and lift the glass plate(2)
carefully out of the recess.
1
2
6.1.2.3 Clean the insulation glass and glass plate
1 Moisten a soft, lint-free cloth with water or a mild detergent. 2 Clean the two glass plates with the slightly moist cloth. 3 Dry the two glass plates with a soft, lint-free cloth so that no moisture enters the instrument.
See also
2 Clean the instrument}Page26
Page 31
Maintenance 29Dropping Point Excellence System
6.1.2.4 Reinstall insulation glass and glass plate
32
1
1 Insert the sample carrier guide(1) into the
recess(2). ð The metal latch(3) clicks into place.
2 To prevent damage to the sample carrier guide,
check that the metal latch has clicked in place underneath the cover of the furnace.
1
2
3 To reinstall the glass plate, pull the metal latch(1)
out slightly and insert the glass plate(2) carefully in the recess.
4 Reinstall the lid.
6.1.3 Remove condensation from the measuring cell (DP90 only)
Condensation can build up in the measuring cell, for example, when opening and closing the door of the
refrigerator or freezer. Condensation blurs the image of the video and the instrument cannot detect a
dropping point or softening point.
1 Remove the measuring cell from the refrigerator or freezer.
2 Remove the samples.
3 Heat the furnace to 200°C until all of the moisture has evaporated.
6.2 Check the temperature accuracy of the instrument
To check if the temperature accuracy of your instrument is still within the specified tolerance limits, you need
to perform a calibration. To perform a calibration, you run a melting point method for a reference substance
and compare the results with the values on the Certificate of Analysis of the reference substance.
Perform the calibration
§
A calibration method for the relevant reference substance is available.
1 Run an analysis using the appropriate calibration method.
ð A message is displayed at the end of the analysis informing you whether or not the calibration
results are within the tolerance limits specified for the particular calibration substance.
2 Tap OK to confirm the message.
3 If the calibration results are not within the tolerance limits, inform the person responsible for the
adjustment of the instrument.
6.3 View the inside of the furnace
§
No task is running.
1 Go to Home > Manual.
2 Tap Furnace inside view.
ð The window shows the inside of the furnace and the furnace temperature.
6.4 Prepare the instrument for storage
If you do not use the instrument for a longer period of time, you should do the following:
1 Remove all samples.
2 Shut down the instrument.
Page 32
Maintenance30 Dropping Point Excellence System
3 Disconnect the instrument from the power supply. 4 Close the protective lid. 5 Clean the instrument.
6.5 Transport the instrument
If you have questions about transporting your instrument, contact your authorized METTLER TOLEDO dealer or service representative.
u www.mt.com/contact
Note
When you send or transport the instrument over long distances, please use all of the original packing material and shipping carton.
1 Remove all samples. 2 Shut down the instrument. 3 Disconnect the instrument from the power supply. 4 Disconnect any accessories like keyboard and mouse. 5 If you want to transport a DP90, disconnect the measuring cell from the control unit. 6 Close the protective lid. 7 Clean the instrument. 8 Move the instrument to the new location.
6.6 Dispose of the instrument
In conformance with the European Directive 2012/19/EU on Waste Electrical and Electronic Equipment (WEEE) this device may not be disposed of in domestic waste. This also applies to countries outside the EU, per their specific requirements.
Please dispose of this product in accordance with local regulations at the collecting point specified for electrical and electronic equipment. If you have any questions, please contact the responsible authority or the distributor from which you purchased this device. Should this device be passed on to other parties (for private or professional use), the content of this regulation must also be related.
Thank you for your contribution to environmental protection.
Page 33
Technical data 31Dropping Point Excellence System
7 Technical data
7.1 DP70
Instrument
Characteristic Value
Power rating instrument
Input values 24VDC ±5%, 5A
Connector type 4-pin, power Mini-DIN female
Power rating AC adapter
Input values 100...240VAC, 1.8A±10%
Input frequency 50-60Hz
Output values 24VDC, 5A
Dimensions
Width 190mm
Depth 350mm
Height 230mm
Weight 4000g
Display
Technology VGA color with touch screen
Size 5.7” VGA
Materials
Housing Crastin® PBT
Measuring cell Stainless steel
Chassis Stainless steel
Protective film (touch screen)
PET
Ambient conditions
Ambient temperature 10…35°C
Relative humidity Noncondensing, max. 80% for temperatures
up to 31°C, decreasing linearly to 50% at 40°C
Altitude Up to 2000m above sea level
Use Interior spaces
Polution degree 2
Overvoltage category II
*Subject to sample, environment and handling
Directives and standards
Directives and standards complied with are listed on the declaration of conformity and on the internet http://
www.mt.com/mpdp-norms.
7.2 DP90
Instrument
Characteristic Value
Power rating instrument
Input values 24VDC ±5%, 5A
Connector type 4-pin, power Mini-DIN female
Power rating AC adapter
Input values 100...240VAC, 1.8A±10%
Input frequency 50-60Hz
Output values 24VDC, 5A
Dimensions control unit
Width 190mm
Depth 350mm
Height 150mm
Weight 2500g
Page 34
Technical data32 Dropping Point Excellence System
Characteristic Value
Dimensions measuring cell
Width 130mm
Depth 250mm
Height 210mm
Weight 4500g
Display
Technology VGA color with touch screen
Size 5.7” VGA
Materials
Housing Crastin® PBT
Measuring cell Stainless steel
Chassis Stainless steel
Protective film (touch screen)
PET
Ambient conditions
Ambient temperature for control unit
10…35°C
Ambient temperature for measuring cell
-20…35°C
Relative humidity Noncondensing, max. 80% for temperatures
up to 31°C, decreasing linearly to 50% at 40°C
Altitude Up to 2000m above sea level
Use Interior spaces
Polution degree 2
Overvoltage category II
*Subject to sample, environment and handling
Directives and standards
Directives and standards complied with are listed on the declaration of conformity and on the internet http://
www.mt.com/mpdp-norms.
Page 35
Page 36
Mettler-Toledo GmbH
Im Langacher 44 8606 Greifensee, Switzerland www.mt.com/contact
Subject to technical changes. © Mettler-Toledo GmbH 07/2017 30352678A
For more information
www.mt.com/mpdp
30352678
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