Metrohm NIRS DS2500 User manual

DS2500 Liquid Analyzer
Manual
8.0929.8001EN / 2021-04-30

Metrohm AG
CH-9100 Herisau
Switzerland
Phone [phone]
Fax [phone]
[email protected]
www.metrohm.com
DS2500 Liquid Analyzer
Manual
8.0929.8001EN / 2021-04-30

Technical Communication
Metrohm AG
CH-9100 Herisau
[email protected]
This documentation is protected by copyright. All rights reserved.
This documentation has been prepared with great care. However, errors
can never be entirely ruled out. Please send comments regarding possible
errors to the address above.

￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭ Table of contents
￭￭￭￭￭￭￭￭ III
Table of contents
1 Introduction 1
1.1 Instrument description ........................................................ 1
1.2 Intended use ......................................................................... 2
1.3 About the documentation ................................................... 2
1.3.1 Symbols and conventions ........................................................ 2
1.4 Safety instructions ................................................................ 3
1.4.1 General notes on safety ........................................................... 3
1.4.2 Electrical safety ........................................................................ 4
1.4.3 Flammable solvents and chemicals ........................................... 5
1.4.4 Recycling and disposal ............................................................. 5
2 Overview of the instrument 6
2.1 Front ..................................................................................... 6
2.2 Rear ........................................................................................ 7
2.3 Sample holders ..................................................................... 8
3 Installation 9
3.1 Unpacking and inspecting the instrument ......................... 9
3.1.1 Packaging ................................................................................ 9
3.1.2 Checks .................................................................................... 9
3.2 Location ................................................................................. 9
3.3 Connecting the instrument to the power grid ................... 9
3.4 Connecting the data cable ................................................. 10
3.5 Switching on the instrument ............................................. 11
3.6 Initial start-up ..................................................................... 11
3.7 Temperature control ........................................................... 12
3.8 Setting up accessories ........................................................ 12
3.8.1 Calibrating the instrument ..................................................... 12
3.8.2 Analyzing liquid samples ........................................................ 14
4 Operation 19
5 Maintenance 20
5.1 Maintenance by Metrohm Service .................................... 20
5.2 Maintenance by the user ................................................... 20
5.2.1 Cleaning the instrument ........................................................ 21
5.2.2 Cleaning the sample holder ................................................... 22
5.2.3 Cleaning the sample compartment ........................................ 22

Table of contents ￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭
IV ￭￭￭￭￭￭￭￭
5.2.4 Replacing the lamp ................................................................ 23
5.2.5 Replacing the fan filter ........................................................... 32
5.2.6 Replacing a fuse .................................................................... 35
6 Technical specifications 38
6.1 Interfaces ............................................................................. 38
6.2 Power connection ............................................................... 38
6.3 Ambient conditions ............................................................ 38
6.4 Dimensions .......................................................................... 38
6.5 Housing ............................................................................... 39
7 Accessories 40
Index 41

￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭ Table of figures
￭￭￭￭￭￭￭￭ V
Table of figures
Figure 1 Front DS2500 Liquid Analyzer ............................................................ 6
Figure 2 Rear DS2500 Liquid Analyzer ............................................................. 7
Figure 3 DS2500 Liquid Analyzer sample holders ............................................. 8
Figure 4 Place the disposable vial in the sample compartment. ...................... 15
Figure 5 Disassembling the sample holder ..................................................... 22

￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭ 1 Introduction
￭￭￭￭￭￭￭￭ 1
1 Introduction
This manual provides you with a comprehensive overview of the installa-
tion and maintenance of the DS2500 Liquid Analyzer. The DS2500 Liquid
Analyzer is operated with the control software. You can find information
on operating the instrument in the tutorial and in the manual for the con-
trol software (see 8.105.8032 Tutorial Vision Air Local and 8.105.8036
Tutorial Vision Air Network and Server).
NOTICE
You can request application descriptions in the form of
Application Notes and Application Bulletins from your
Metrohm representative or download them from
http://www.metrohm.com.
1.1 Instrument description
The DS2500 Liquid Analyzer is a compact measuring instrument for trans-
mission measurement in the near-infrared wavelength range. The poly-
chromatic light is dispersed by the monochromator built into the DS2500
Liquid Analyzer into monochromatic wavelengths before hitting the sam-
ple. This keeps heating of the sample to a minimum. The instrument oper-
ates in a wavelength range from 400 to 2,500 nm.
In order to ensure that each sample can be measured at the optimal tem-
perature, the DS2500 Liquid Analyzer heats the sample to the desired
temperature before the analysis. The DS2500 Liquid Analyzer can be
actively cooled so that there is no delay between measurements at various
temperatures.
The DS2500 Liquid Analyzer is designed for quality monitoring of the pro-
duction processes. Use the DS2500 Liquid Analyzer for the following pur-
poses:
￭Quick and non-destructive incoming goods inspection of liquids
￭Production process monitoring
￭Pre-delivery inspection of the final product
Liquid samples can be measured using the DS2500 Liquid Analyzer.
The DS2500 Liquid Analyzer is a durable instrument that is resistant to
moisture, dust, vibrations and temperature fluctuations. As a result, the
DS2500 Liquid Analyzer can be used in a variety of production facilities.

1.2 Intended use ￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭
2￭￭￭￭￭￭￭￭
The DS2500 Liquid Analyzer is operated with the control software via an
external computer.
1.2 Intended use
The DS2500 Liquid Analyzer is designed for use in production facilities.
The DS2500 Liquid Analyzer can be used for incoming goods inspection or
atline or offline for production process monitoring.
Usage requires the user to have basic knowledge and experience in han-
dling chemicals. Knowledge with respect to the application of the fire pre-
vention measures prescribed for laboratories is also required.
Adherence to this technical documentation and compliance with the
maintenance specifications make up an important part of intended use.
Any utilization in excess of or deviating from the intended use is regarded
as misuse.
Specifications regarding the operating values and limit values of individual
products are covered in the "Technical specifications" section (see chapter
6, page 38).
Exceeding and/or not observing the mentioned limit values during opera-
tion puts people and components at risk. The manufacturer assumes no
liability for damage due to non-observance of these limit values.
The EU declaration of conformity loses its validity as soon as modifications
are carried out on the products and/or the components.
1.3 About the documentation
CAUTION
Read through this documentation carefully before putting the instru-
ment into operation. The documentation contains information and
warnings which the user must follow in order to ensure safe operation
of the instrument.
1.3.1 Symbols and conventions
The following symbols and formatting may appear in this documentation:
Cross-reference to figure legend
The first number refers to the figure number, the sec-
ond to the instrument part in the figure.

￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭ 1 Introduction
￭￭￭￭￭￭￭￭ 3
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
WARNING
This symbol draws attention to a possible life-threat-
ening hazard or risk of injury.
WARNING
This symbol draws attention to a possible hazard due
to electrical current.
WARNING
This symbol draws attention to a possible hazard due
to heat or hot instrument parts.
WARNING
This symbol draws attention to a possible biological
hazard.
CAUTION
This symbol draws attention to possible damage to
instruments or instrument parts.
NOTE
This symbol highlights additional information and
tips.
1.4 Safety instructions
1.4.1 General notes on safety
WARNING
Operate this instrument only according to the information contained in
this documentation.
This instrument left the factory in a flawless state in terms of technical
safety. To maintain this state and ensure non-hazardous operation of the
instrument, the following instructions must be observed carefully.

1.4 Safety instructions ￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭
4￭￭￭￭￭￭￭￭
1.4.2 Electrical safety
The electrical safety when working with the instrument is ensured as part
of the international standard IEC 61010.
WARNING
Only personnel qualified by Metrohm are authorized to carry out service
work on electronic components.
WARNING
Never open the housing of the instrument. The instrument could be
damaged by this. There is also a risk of serious injury if live components
are touched.
There are no parts inside the housing which can be serviced or replaced
by the user.
Supply voltage
WARNING
An incorrect supply voltage can damage the instrument.
Only operate this instrument with a supply voltage specified for it (see
rear panel of the instrument).
Protection against electrostatic charges
WARNING
Electronic components are sensitive to electrostatic charges and can be
destroyed by discharges.
Do not fail to pull the power cord out of the power socket before you
set up or disconnect electrical plug connections at the rear of the
instrument.

￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭ 1 Introduction
￭￭￭￭￭￭￭￭ 5
1.4.3 Flammable solvents and chemicals
WARNING
All relevant safety measures are to be observed when working with
flammable solvents and chemicals.
￭Set up the instrument in a well-ventilated location (e.g. fume cup-
board).
￭Keep all sources of flame far from the workplace.
￭Clean up spilled liquids and solids immediately.
￭Follow the safety instructions of the chemical manufacturer.
1.4.4 Recycling and disposal
This product is covered by European Directive 2012/19/EU, WEEE – Waste
Electrical and Electronic Equipment.
The correct disposal of your old instrument will help to prevent negative
effects on the environment and public health.
More details about the disposal of your old instrument can be obtained
from your local authorities, from waste disposal companies or from your
local dealer.

2.1 Front ￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭
6￭￭￭￭￭￭￭￭
2 Overview of the instrument
2.1 Front
Figure 1 Front DS2500 Liquid Analyzer
1Lid 2Sample compartment
3LED display 4Feet (shock-absorbing)
5Lamp compartment 6Cover plate

￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭ 2 Overview of the instrument
￭￭￭￭￭￭￭￭ 7
2.2 Rear
Figure 2 Rear DS2500 Liquid Analyzer
1On/off switch
For switching the instrument on and off
2Fuse holder
3Power socket
Sealed with protective cap
4Type plate
5LAN connection socket
Sealed with protective cap
6Fan
With filter

2.3 Sample holders ￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭
8￭￭￭￭￭￭￭￭
2.3 Sample holders
Figure 3 DS2500 Liquid Analyzer sample holders
1DS2500 holder for cuvettes 2DS2500 holder for flow cells
3DS2500 holder for disposable vials 4DS2500 Liquid Wavelength Standard

￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭ 3 Installation
￭￭￭￭￭￭￭￭ 9
3 Installation
3.1 Unpacking and inspecting the instrument
3.1.1 Packaging
The instrument is supplied in protective packaging together with the sepa-
rately packed accessories. Keep this packaging, as only this ensures safe
transportation of the instrument.
3.1.2 Checks
Immediately after receipt, check whether the shipment has arrived com-
plete and without damage by comparing it with the delivery note.
3.2 Location
The instrument has been developed for operation indoors and may not be
used in explosive environments.
Place the instrument in a location of the laboratory which is suitable for
operation, free of vibrations, protected from corrosive atmosphere, and
contamination by chemicals.
The instrument should be protected against excessive temperature fluctua-
tions and direct sunlight.
3.3 Connecting the instrument to the power grid
WARNING
Electric shock from electrical potential
Risk of injury by touching live components or through moisture on live
parts.
￭Never open the housing of the instrument while the power cord is
still connected.
￭Protect live parts (e.g. power supply unit, power cord, connection
sockets) against moisture.
￭Unplug the power plug immediately if you suspect that moisture has
gotten inside the instrument.
￭Only personnel who have been issued Metrohm qualifications may
perform service and repair work on electrical and electronic parts.

3.4 Connecting the data cable ￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭
10 ￭￭￭￭￭￭￭￭
Connecting the power cord
Accessories Power cord with the following specifications:
￭Length: max. 2 m
￭Number of cores: 3, with protective conductor
￭Instrument plug: IEC 60320 type C13
￭Conductor cross-section 3x min. 0.75 mm2 / 18 AWG
￭Power plug:
– according to customer requirement (6.2122.XX0)
– min. 10 A
NOTICE
Do not use a not permitted power cord!
1Plugging in the power cord
￭Plug the power cord into the instrument's power socket.
￭Connect the power cord to the power grid.
3.4 Connecting the data cable
In order to control the DS2500 Liquid Analyzer, connect it to a computer
either directly or via a local network (LAN).
For direct connection to the network card of a computer, use the supplied
data cable.
Additional steps might be required for connecting via your local network.
As network configurations vary considerably across different companies,
exact details are not provided in this manual. Have your network specialist
establish the connection between the instrument and the company net-
work.
Connecting the computer directly
Accessories ￭DS2500 data cable
￭Computer with installed control software
1Remove the protective cap from the LAN connection socket (2-5).
2Plug the cable into the LAN connection socket (2-5) and tighten it.

￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭ 3 Installation
￭￭￭￭￭￭￭￭ 11
3Connect the other end of the data cable to the computer's network
cable connector.
3.5 Switching on the instrument
Switching on the instrument
1Turn the on/off switch (2-1) to position I.
￭The LED display on the front of the DS2500 Liquid Analyzer (1-3)
lights up.
￭The instrument performs a self-test.
￭The sample compartment lid opens.
2Wait until the control software has recognized the instrument.
3.6 Initial start-up
The initial start-up of the DS2500 Liquid Analyzer is carried out by trained
and instructed specialists from Metrohm and/or its representative(s).

3.7 Temperature control ￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭
12 ￭￭￭￭￭￭￭￭
3.7 Temperature control
The DS2500 Liquid Analyzer supports a temperature range between 25 °C
and 80 °C. The minimum temperature that can be set must be 10 °C
above the ambient temperature Tmin = Tambient + 10 °C
To achieve a temperature of 25 °C, the ambient temperature must be
15 °C. As the ambient temperature in most laboratories is approx. 25 °C,
Metrohm recommends to set the temperature to a minimum of 35 °C.
3.8 Setting up accessories
The following sample cups can be used with the DS2500 Liquid Analyzer:
Intended use Holder for sample cups Order number
Fast and convenient analysis DS2500 holder for 2 mm disposable vials
DS2500 holder for 4 mm disposable vials
DS2500 holder for 8 mm disposable vials
DS2500 holder for 10 mm disposable vials
6.7492.000
6.7492.010
6.7492.020
6.7492.030
High precision DS2500 holder for 1 mm cuvettes
DS2500 holder for 2 mm cuvettes
DS2500 holder for 5 mm cuvettes
DS2500 holder for 10 mm cuvettes
6.7492.100
6.7492.110
6.7492.120
6.7492.130
High sample throughput and automation DS2500 holder for flow cells 6.7493.000
Calibration DS2500 liquid wavelength calibration stan-
dard
6.7494.000
3.8.1 Calibrating the instrument
The DS2500 Liquid Analyzer is calibrated with an external wavelength
standard (see "Calibration with an external wavelength standard", page
13) and with an internal wavelength standard (see "Calibrating the
instrument with an internal wavelength standard", page 13).
WARNING
Hot surface
Danger of burning due to hot components. The sample holder can be
heated to a maximum of 80 °C. After operation, the sample compart-
ment, the sample holder and the sample vessel are very hot.
￭Wear protective gloves when handling sample holders and samples.