Buchi NIRMaster Essential Operation Manual

NIRMaster™

Operation Manual

11593580 | E en

Imprint

Product Identification:
Operation Manual (Original) NIRMaster™
11593580

Publication date: 09.2022

Version E

BÜCHI Labortechnik AG
Meierseggstrasse 40
Postfach
CH-9230 Flawil 1
E-Mail: [e-mail]
BUCHI reserves the right to make changes to the manual as deemed necessary in the light of experience,
especially with respect to structure, illustrations and technical details.
This manual is copyrighted. Information from it may neither be reproduced, distributed, or used for
competitive purposes, nor made available to third parties. The manufacture of any component with the
aid of this manual without prior written agreement is also prohibited.

Büchi Labortechnik AG Table of contents

Table of contents

1 About this document........................................................................................................... 6

1.1 Mark-ups and symbols ..........................................................................................................6

1.2 Trademarks ...........................................................................................................................6

1.3 Connected devices ................................................................................................................6

2 Safety....................................................................................................................................7

2.1 Proper use .............................................................................................................................7

2.2 Use other than intended ........................................................................................................7

2.3 Staff qualification ...................................................................................................................7

2.4 Warning notices in this document.......................................................................................... 8

2.5 Warning and directive symbols.............................................................................................. 8

2.6 Residual risks ........................................................................................................................9

2.6.1 Glass and acrylic breakage ......................................................................................9

2.6.2 Faults during operation.............................................................................................9

2.6.3 Data loss................................................................................................................... 9

2.7 Personal protective equipment ..............................................................................................9

2.8 Modifications........................................................................................................................10

3 Product description...........................................................................................................11

3.1 Description of function .........................................................................................................11

3.1.1 Effective NIR light path ...........................................................................................12

3.1.2 Reference laser signal path....................................................................................12

3.1.3 NIRWare software suite.......................................................................................... 12

3.2 Measurement modes...........................................................................................................13

3.2.1 Diffuse reflection mode...........................................................................................13

3.2.2 Transflectance mode ..............................................................................................14

3.3 Configuration .......................................................................................................................14

3.3.1 NIRMaster instrument............................................................................................. 14

3.4 Scope of delivery .................................................................................................................14

3.5 Type plate............................................................................................................................15

3.6 Technical data .....................................................................................................................15

3.6.1 NIRMaster™ Essential ...........................................................................................15

3.6.2 Ambient conditions .................................................................................................16

3.6.3 Materials .................................................................................................................16

3.6.4 Installation site........................................................................................................17

4 Transport and storage ......................................................................................................18

4.1 Transport .............................................................................................................................18

4.2 Storage ................................................................................................................................18

4.3 Lifting the instrument ...........................................................................................................18

4.4 Lock / unlock the transportation lock ...................................................................................19

Operation Manual NIRMaster™ iii

Table of contents Büchi Labortechnik AG

5 Installation..........................................................................................................................21

5.1 Before installation ................................................................................................................21

5.1.1 Electrical connections requirement......................................................................... 21

5.2 Establishing electrical connections......................................................................................21

5.2.1 Connect the mains cable ........................................................................................22

5.3 Connect the instrument to the PC using the supplied ethernet cable.................................. 22

5.4 Install the BUCHI NIRWare software on the computer........................................................ 22

5.5 Setting up the network connection between Computer and instrument ..............................23

6 Operation............................................................................................................................24

6.1 Initializing the instrument .....................................................................................................24

6.1.1 System warm-up..................................................................................................... 24

6.2 System Suitability Test ........................................................................................................24

6.2.1 Temperature tests ..................................................................................................24

6.2.2 NIR linearity test .....................................................................................................25

6.2.3 Signal-to-noise ratio determination.........................................................................25

6.2.4 Wavenumber stability test ......................................................................................25

6.3 Reference measurements ...................................................................................................25

6.3.1 External reference ..................................................................................................25

6.3.2 Internal reference ...................................................................................................25

6.3.3 Performing a reference measurement....................................................................26

6.4 How to perform a measurement ..........................................................................................28

6.5 Shutting down the instrument ..............................................................................................29

7 Cleaning and servicing .....................................................................................................30

7.1 Regular maintenance work..................................................................................................30

7.2 Cleaning the housing...........................................................................................................30

7.3 How to lift off the top cover ..................................................................................................31

7.4 Exchanging the outer filters .................................................................................................33

7.5 Exchanging the inner filters .................................................................................................34

7.6 Cleaning the external reference ..........................................................................................34

7.7 Cleaning the spinner............................................................................................................35

7.8 Cleaning the add-ons and the custom sample vessels .......................................................35

7.9 How to reset the system fuses ............................................................................................35

7.10 Exchanging the lamp ...........................................................................................................36

7.11 Resetting the lamp lifetime counter .....................................................................................37

7.12 Exchanging the laser unit ....................................................................................................37

7.13 Extended system service and testing ..................................................................................38

8 Help with faults ..................................................................................................................39

8.1 Troubleshooting...................................................................................................................39

8.2 Enhanced system diagnose (NADIA) ..................................................................................39

8.3 Reference measurement fails.............................................................................................. 40

9 Taking out of service and disposal.................................................................................. 41

9.1 Taking out of service ...........................................................................................................41

9.2 Disposal...............................................................................................................................41

9.3 Returning the instrument .....................................................................................................41

iv

Operation Manual NIRMaster™

Büchi Labortechnik AG Table of contents

10 Appendix ............................................................................................................................42

10.1 Spare parts and accessories ...............................................................................................42

10.1.1 Spare parts .............................................................................................................42

10.1.2 Accessories ............................................................................................................43

Operation Manual NIRMaster™ v

1 | About this document

1 About this document

1.1 Mark-ups and symbols

Büchi Labortechnik AG

This operation manual is applicable for all variants of the instrument.
Read this operation manual before operating the instrument and follow the
instructions to ensure safe and trouble-free operation.
Keep this operation manual for later use and pass it on to any subsequent user or
owner.
BÜCHI Labortechnik AG accepts no liability for damage, faults and malfunctions
resulting from not following this operation manual.
If you have any questions after reading this operation manual:

u Contact BÜCHI Labortechnik AG Customer Service.

https://www.buchi.com/contact

NOTE

This symbol draws attention to useful and important information.

R This character draws attention to a requirement that must be met before the

instructions below are carried out.

u This character indicates an instruction that must be carried out by the user.

ð This character indicates the result of a correctly carried out instruction.

Mark-up Explanation

Win dow

Tab

Dia log

[Button] Buttons are marked-up like this.

[Field names] Field names are marked-up like this.

[Menu / Menu item] Menus or menu items are marked-up like this.

Status Status is marked-up like this.

Signal Signals are marked-up like this.

1.2 Trademarks

Product names and registered or unregistered trademarks that are used in this
document are used only for identification and remain the property of the owner in
each case.

Software Windows are marked-up like this.

Tabs are marked-up like this.

Dialogs are marked-up like this.

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1.3 Connected devices

In addition to these operating instructions, follow the instructions and specifications
in the documentation for the connected devices.

Operation Manual NIRMaster™

Büchi Labortechnik AG

2 Safety

2.1 Proper use

2.2 Use other than intended

Safety | 2

The instrument is designed and built for laboratories and production environments
(at-line). It serves to determine the concentration of selected constituents contained
within a substance.
The instrument can be used for the following tasks:

 Determination of quantifiable product properties.

Use of any kind other than that described in Chapter2.1 "Proper use", page7 and
any application that does not comply with the technical specifications (see
Chapter3.6 "Technical data", page15) constitutes use other than that intended.
In particular, the following applications are not permissible:

 Use of the instrument in rooms which require Ex-protected instruments.

 Use of samples, which can explode or inflame (example: explosives, etc.) due to

shock, friction, heat or spark formation.

2.3 Staff qualification

Unqualified persons are unable to identify risks and are therefore exposed to greater
dangers.
The device may only be operated by suitably qualified laboratory staff.
These operating instructions are aimed at the following target groups:

Users

Users are persons that meet the following criteria:

 They have been instructed in the use of the device.

 They are familiar with the contents of these operating instructions and the

applicable safety regulations and apply them.

 They are able on the basis of their training or professional experience to assess

the risks associated with the use of the device.

Operator

The operator (generally the laboratory manager) is responsible for the following
aspects:

 The device must be correctly installed, commissioned, operated and serviced.

 Only suitably qualified staff may be assigned the task of performing the

operations described in these operating instructions.

 The staff must comply with the local applicable requirements and regulations for

safe and hazard-conscious working practices.

 Safety-related incidents that occur while using the device should be reported to

the manufacturer ([e-mail]).

Operation Manual NIRMaster™

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2 | Safety

Büchi Labortechnik AG

BUCHI service technicians

Service technicians authorized by BUCHI have attended special training courses and
are authorized by BÜCHI Labortechnik AG to carry out special servicing and repair
measures.

2.4 Warning notices in this document

Warning notices warn you of dangers that can occur when handling the device.
There are four danger levels, each identifiable by the signal word used.

Signal word Meaning

DANGER Indicates a danger with a high level of risk which could result in

death or serious injury if not prevented.

WARNING Indicates a danger with a medium level of risk which could result in

death or serious injury if not prevented.

CAUTION Indicates a danger with a low level of risk which could result in mi-

nor or medium-severity injury if not prevented.

NOTICE Indicates a danger that could result in damage to property.

2.5 Warning and directive symbols

The following warning symbols are displayed in this operation manual or on the
instrument.

Symbol Meaning

General warning

Dangerous electrical voltage

Laser beam

Laser class 1

Avoid exposure to laser beam

Hot surface

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Device damage

Breakable items

Operation Manual NIRMaster™

Büchi Labortechnik AG

2.6 Residual risks

Safety | 2

Symbol Meaning

Magnetic field

Unplug device

Wear safety goggles

Wear protective gloves

Heavy weight, lifting requires more than one person

The instrument has been developed and manufactured using the latest technological
advances. Nevertheless, risks to persons, property or the environment can arise if
the instrument is used incorrectly.
Appropriate warnings in this manual serve to alert the user to these residual
dangers.

2.6.1 Glass and acrylic breakage

Broken glass and acrylic can cause severe cuts.
Broken glass or acrylic can enter production.

u Handle the Petri Dishes and other glass and acrylic components carefully and do

not drop them.

u Always visually inspect glass and acrylic components for damage every time they

are to be used.

u Do not continue to use glass and acrylic components that are damaged.
u Always wear protective gloves when disposing of broken glass and acrylic.

2.6.2 Faults during operation

If a device is damaged, sharp edges or exposed electrical wires can cause injuries.

u Regularly check device for visible damage.
u If faults occur, switch off the device immediately and inform the operator.
u Do not continue to use devices that are damaged.

2.6.3 Data loss

In the event of a power failure, e.g. due to lightning or interruption of power supply,
measurement data may be lost.

u Carry out regular data backup.

2.7 Personal protective equipment

Depending on the application, hazards due to heat and/or corrosive chemicals may
arise.

Operation Manual NIRMaster™

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2 | Safety

Büchi Labortechnik AG

u Always wear appropriate personal protective equipment such as safety goggles,

protective clothing and gloves.

u Make sure that the personal protective equipment meets the requirements of

the safety data sheets for all chemicals used.

2.8 Modifications

Unauthorized modifications can effect safety and lead to accidents.

u Use only genuine BUCHI accessories, spare parts and consumables.
u Carry out technical changes only with prior written approval from BUCHI.
u Only allow changes to be made by BUCHI service technicians.

BUCHI accepts no liability for damage, faults and malfunctions resulting from
unauthorized modifications.

10/46

Operation Manual NIRMaster™

Büchi Labortechnik AG

2

1

4

6

3 Product description

3.1 Description of function

Product description | 3

The instrument is a benchtop Fourier Transformation Near Infrared spectrometer
(FT-NIR) to identify and quantify analytes of interest. It generates an invisible near
infrared interferogram beam which interacts with the mole- cules of a sample,
generating a characteristic feedback. The feedback is picked up via a measurement
cell by a detector and mathematically processed via Fourier transformation into a
spectrum. This spectrum is charac- teristic for a given sample and allows
identification as well as quantification of its components.
How the interferogram is generated
An interferogram is an interference pattern of phase-shifted beams. The instrument
is a single-beam polarization interferometer, generating its interferogram in four
steps:

1. Polarization of the light source output

The polarizer
polarized light, emitted by the light source

generates a well-defined polarization output of the undefined

. Thus, only diagonally polarized

light is transmitted.

2. Beam splitting and orthogonal polarization

The polarized light enters a double refracting block (comparator) 3. Here, the
light is broken down into two, orthogonally polarized components with a small,
static phase shift.

3. Generating the ongoing phase shift

An assembly of two double refracting wedges is arranged after the comparator.
Wedge

is stationary, while wedge 5 is constantly shifted back and forwards
by a fast linear-drive. The movement and the geometric arrangement provides a
change of thickness in the light path. This leads to an ongoing phase shift
between the light beams.

4. Beam recombination and interferogram output

A second polarizer

converts the phase shifted beams into a single light output

with intensity variation – the interferogram

Operation Manual NIRMaster™

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3 | Product description

875432

1

1

2

6

4

3

6

5

LASER – 633 nm

Spare lamp

1

2

3

4

5

6

7

8

1

2

3

4

5

6

3.1.1 Effective NIR light path

Büchi Labortechnik AG

Number Explanation

NIR light source assembly with spare lamp and motorized parabolic re­flector

First polarizer

Comparator (double refracting block)

Stationary double refracting wedge

Moving double refracting wedge

Second polarizer

Sample

Interferogram detector

3.1.2 Reference laser signal path

Number Explanation

Laser output window

Second polarizator (works as a beam splitter for the laser)

Laser output-power sensor

First polarizer

Laser feedback detector

Linear motor for wedge movement

3.1.3 NIRWare software suite

NIRWare is the interface program suite between the instrument and the operator.
All program parts need to be hosted on a separate PC.

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Operation Manual NIRMaster™

Büchi Labortechnik AG

1

3

2

1

2

3

Product description | 3

All measurements are performed using the NIRWare Operator. The NIRWare
Operator includes the following program elements by default:

 Operator interface(s)

 Administrative tools

 Report templates

 Software to run routine analysis

 Comprehensive database with analysis data and other

Advanced software and system management is done with the NIRWare
Management Console tool.
The NIRWare Management Console combines various software modules

 NIRWare Application Designer to define NIRWare Operator applications.

 NIRWare Sample Manager to administrate all samples and reference values.

 NIRWare Administrative Tools for applications and calibrations interchange and

other administrative tasks.

 NIRWare Security Designer to define users and user groups according to custom

security policies.

 The BUCHI Database Manager is used for any database operations.

Optional:.

 NIRWare LIMS to import and export sample information and measurement data.

 NIRWare Library Designer is a powerful software module for substance identity

control using full spectral comparison. It is designed for the development of
spectral libraries tailored to individual user requirements

To connect the instrument with a PC see Chapter5.5 "Setting up the network
connection between Computer and instrument", page23.

3.2 Measurement modes

3.2.1 Diffuse reflection mode

Non-translucent materials can be ana­lyzed via diffuse reflection.

NIR light penetration is limited by the
sample material. It interacts with the
sample, is refracted and diffusely re­flected into the sensor. The reflected rays
contain the spectral information of the
sample.

Sample
Sensor
Light

Operation Manual NIRMaster™

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3 | Product description

2

1

4

3

1

2

3

4

Primary lamp

Internal fuses

Interferometer

Interferometer

interface panel

LASER assembly

Cable

USB Connector

ON / OFF button

Add-on Connector

feedthrough

3.2.2 Transflectance mode

3.3 Configuration

3.3.1 NIRMaster instrument

Büchi Labortechnik AG

Translucent and opaque liquids can be
analyzed via transflectance mode. The
light penetrates the liquid, is diffusely re­flected by the reference plate and passes
through the sample a second time. The
transflected rays contain the spectral in­formation of the sample.

Transflectance cover
Sample cup
Sensor
Light

14/46

3.4 Scope of delivery

Fig.1: Shows the main components of the instrument at open housing.

NOTE

The scope of delivery depends of the configuration of the purchase order.

Accessories are delivered as per the purchase order, order confirmation, and
delivery note.

Operation Manual NIRMaster™

Büchi Labortechnik AG

6

7

8

11

9

10

3

2

1

5

4

3.5 Type plate

Product description | 3

The type plate identifies the instrument. The type plate is located at the rear of the
instrument.

Fig.2: Type plate

1 Symbol for "electronics recycling" 2 Initial product code

3 Approvals 4 Symbol for "Do not dispose of as

household waste"

5 Year of manufacture 6 Power consumption maximum

7 Frequency 8 Input voltage range

9 Serial number 10 Instrument name

11 Company name and address

3.6 Technical data

3.6.1 NIRMaster™ Essential

Specification NIRMaster™ Essential

Dimensions (W x D x H) 420 x 560 x 360 mm

Weight 43 kg

Minimum clearance on all sides 150 mm

Connection voltage 100 – 240 VAC ± 10 %

Frequency 50 / 60 Hz

Power consumption 150 W

IP Code 54

Internal fuse 4A / 240V

Type of interferometer Polarisation interferometer with

Spectral range 800 – 2500 nm

Resolution

Operation Manual NIRMaster™

(with boxcar apodization)

Wavenumber accuracy
(at an ambient temperature of 25°C ± 5°C)

TeO2 wedges

12 500 – 4000 cm–1

8 cm–1

± 0.2 cm–1

15/46

3 | Product description

Büchi Labortechnik AG

Specification NIRMaster™ Essential

Signal-to-noise ratio 10000

(peak-to-peak noise of a linear
corrected base- line between
5600−6000 cm-1)

Number of scans/sec. 2 - 4

Illumination spot diameter 9 mm

Analog digital converter 24 bit

Lamp type Tungsten-halogen

Average life
(lamp)

Type of laser 12 VDC HeNe, wavelength at

Connection voltage 100 – 240 VAC ± 10 %

Detector Extended range InGaAs (temper-

Internal reference Gold plate

External reference Spectralon®

Sample rotation Easy-spin drive, a magnetic spin-

3.6.2 Ambient conditions

For indoor use only.

Max. altitude above sea level 2000 m

Ambient temperature 5 - 40 °C (25 °C)

6000 h

632.992 nm

ature controlled)

ner is included for high perfor­mance measurement of inhomo­geneous sample

16/46

Maximum relative humidity 80 % for temperatures up to 31

Storage temperature max. 45 °C

3.6.3 Materials

Component Material of construction

Spectrometer base Aluminum

Wedges TeO

Polarizers Glass

Upper housing part PMMA, food grade

Lower housing part Stainless steel, food grade 1.4301

Spinner PETP, stainless steel 1.4305 / 1.4301

XL add-on Stainless steel 1.4305, glass

°C
decreasing linearly to 50 % rela-

tive humidity at 40 °C

2

Operation Manual NIRMaster™

Büchi Labortechnik AG

3.6.4 Installation site

Product description | 3

Component Material of construction

External reference Aluminum, glass inlay, PTFE inlay

Transflectance adapter Stainless steel 1.4435

Detector InGaAs

Magnets NdFeB

 The installation site allows that the power supply can be disconnected at any time

in an emergency.

 The installation site has a firm, level and nonslip surface.

 The installation site has a fume hood.

 The installation site has an own mains outlet socket for the instrument.

 The installation site has enough space that cables / tubes can be routed safely.

 The installation site has no obstacles (e.g. water taps, drains, etc.).

 The installation site is not exposed to external thermal loads, such as direct solar

radiation.

 The installation site is not located near vibration-sensitive devices.

 The installation site meets the requirements for the connected devices. See

related documentation

 The installation site meets the requirements of the safety data sheets for all

solvents and samples used.

 The installation site meets the safety requirements. See Chapter2 "Safety",

page7

 The installation site meets the specifications according to the technical data (e.g.

weight, dimension, etc.). See Chapter3.6 "Technical data", page15

Operation Manual NIRMaster™

17/46

4 | Transport and storage

4 Transport and storage

4.1 Transport

4.2 Storage

Büchi Labortechnik AG

NOTICE

Risk of breakage due to incorrect transportation

u Make sure that all parts of the device are safely packed in such a way as to

prevent breakage, ideally in the original box.

u Avoid sharp movements during transit.

u After transportation, check the device for damage.
u Damage that has occurred in transit should be reported to the carrier.
u Keep packing for future transportation.

u Make sure that the ambient conditions are complied with (see Chapter3.6

"Technical data", page15).

u Wherever possible, store the device in its original packaging.
u After storage, check the device for damage and replace if necessary.

4.3 Lifting the instrument

WARNING

Danger due to incorrect transportation

The possible consequences are crushing injuries, cuts and breakages.

u The instrument should be transported by two persons at the same time.
u Lift the instrument at the points indicated.

18/46

Operation Manual NIRMaster™

Büchi Labortechnik AG

Locked

Locked

4.4 Lock / unlock the transportation lock

Transport and storage | 4

NOTICE

Risk of instrument damage at use with engaged transportation lock.

u Disengage the transportation lock prior use.

u Switch off the instrument.
u Unplug the power cord.
u Unlock the housing.
u Lift off the top cover.

ð The locking mechanism is accessible.

Operation Manual NIRMaster™

u Turn the knob in clockwise direction.

ð The locking mechanism is unlocked and the linear drive of the interferometer is

freely moveable.

19/46

4 | Transport and storage

Locked

Büchi Labortechnik AG

u Close the top cover.
u Lock all four latches.
u Plug in the power cord.
u Switch on the instrument.

20/46

Operation Manual NIRMaster™

Büchi Labortechnik AG

5 Installation

5.1 Before installation

5.1.1 Electrical connections requirement

Installation | 5

NOTICE

Instrument damage due to switching it on too early.

Switching on the instrument too early after transportation can cause damage.

u Climatize the instrument after transportation.

NOTICE

For safe servicing the instrument it needs to be disconnect from the mains power
supply.

Precondition:

R The instrument is installed with a locked or secured plug.

R The instrument is installed stationary (without power plug).

u An external power switch is required.

5.2 Establishing electrical connections

NOTICE

Risk of instrument damage because of not suitable power supply cables.

Not suitable power supply cables can cause bad performance or an instrument
damage

u Use only BUCHI power supply cables.

Precondition:
R The electrical installation is as specified on the

type plate.

R The electrical installation is equipped with a

proper grounding system.

R The electrical installation is equipped with

suitable fuses and electrical safety features.

R The installation site is as specified in the

technical date. See Chapter3.6 "Technical
data", page15

u Connect the power supply cable to the

connection on the instrument. See Chapter3.3
"Configuration", page14

Operation Manual NIRMaster™

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5 | Installation

Büchi Labortechnik AG

u Connect the mains plug to an own mains outlet

socket.

5.2.1 Connect the mains cable

Precondition:
R The cover is removed.

u Route the mains cable through the cable gland in the lower chassis.

u Connect the cable to the main socket at

mounted on the rear of the instrument lower
chassis.

5.3 Connect the instrument to the PC using the supplied ethernet
cable

u Remove the cover from the top of the

instrument with the key provided. (Two fixings
on the left hand side, two fixings on the right
hand side)

u Route the ethernet cable through the cable gland in the lower chassis.

u Connect the cable to the ethernet socket on the

rear of the cream colored optical bench.

5.4 Install the BUCHI NIRWare software on the computer

Install the BUCHI NIRWare software on the computer

Install BUCHI NIRWare software suite following the instruction in Chapter 4
“Software Installation” of the NIRWare Quick Guide.

22/46

Note!

Activate the relevant licences for software and any pre-calibrations that are
required.

Operation Manual NIRMaster™

Büchi Labortechnik AG

5.5 Setting up the network connection between Computer and

Installation | 5

instrument

u Start the computer, and open the dialog box

Pro pert ies

u Highlight the option [Internet Protocol Version 4 (TCP/

.

Et hern et

IPv4)] from the list.

u Click the button [Properties].

ð The dialog box

IPv 4)

u Activate the radio button next to [Use the following IP

open.

Int erne t P rotocol Ve rsio n 4 (TC P/

address].

u Enter the following values.

 IP address: 192.168.1.2

 Subnet mask: 255.255.255.0

u Click the button [OK].

ð The dialog box

close.

IPv 4)

u Click the button [OK].

ð The dialog box

Int erne t P rotocol Ve rsio n 4 (TC P/

Eth erne t P roperti es

close.

The network settings are now correctly set up so communication between the in­strument and computer is possible.

Start NIRWare operator software and verify that the Computer is correctly con­nected to the instrument.

Operation Manual NIRMaster™

23/46

6 | Operation

Büchi Labortechnik AG

6 Operation

6.1 Initializing the instrument

u To start the instrument press the green power button on the left side of the

instrument for 1 – 3 seconds.

ð The indicator light at the housing front will light up yellow, to indicate the

bootup process.

u Switch on the PC with the installed NIRWare software suite.

ð The instrument is ready to log in when the indicator light will change from yellow

to green, after approximately 60 seconds.

6.1.1 System warm-up

When cooled down below working temperature, the spectrometer needs a warm-up
time of approx. 15 min. The warm-up time starts as soon as the instrument is
switched on.NOTICE!Insufficient warm-up time can influence the quality of

measurement. A longer warm-up time might be required at low environmental
temperature.

6.2 System Suitability Test

NOTE

Frequent tests should be performed to minimize the risk of erroneous
measurements.

The System Suitability Test (SST) serves as an internal functionality and performance
test of the spectrometer. A SST has do be done after each restart of the instrument
to monitor and verify the system performance.
The following SST values are tested:

 Internal system temperatures (e.g. Laser, interferometer, detectors)

 Linearity

 Signal-to-noise ratio

 Wavenumber stability

At the end of each SST a report protocol will be generated. The test results are
compared to values ex factory and inform the user about the system condition.
The report protocol is stored in the internal database for service and quality control
in XML-format..
The time between two SST requests can be set with the NIRWare Application
Designer. The recommended standard value between two tests is 24 hours, a test­run takes approximately 5 min. If the instrument is used in continuous operation, a
longer checking interval might be suitable.

24/46

6.2.1 Temperature tests

The instrument is equipped with a number of sensors to monitor internal
temperatures. Correct operation of the instrument is ensured when the measured
internal temperatures are within specified ranges.

u Check if all actual temperature values are within the limits.

Operation Manual NIRMaster™

Büchi Labortechnik AG

6.2.2 NIR linearity test

6.2.3 Signal-to-noise ratio determination

Operation | 6

u Mind the ambient temperature data as listed in Chapter3.6.2 "Ambient

conditions", page16

Precondition:
R If temperature is too low:

u Let system warm up sufficiently.

Precondition:
R If temperature is too high:

u Clean filters and provide sufficient airflow.

The linearity of the NIR detector is tested by presenting five filters with known
absorbance to the instrument. The measured absorbance is compared to the known
reference value.
To pass this test, all absorbance factors must be within the tolerance.

With this test the ratio of signal power to noise power is determined. A high flux
(maximum intensity) and a low flux (10 % intensity) beam is being analyzed for a
number of wavenumber intervals.
To pass these test, the average and the minimum values must be within the
tolerance.

6.2.4 Wavenumber stability test

The wavenumber stability of the instrument is checked by presenting a PMMA filter
to the instrument. The measured spectra is compared to a known reference spectra.
To pass the test the measured spectra should be within the wavenumber tolerance
limits of the reference spectra.

6.3 Reference measurements

Frequent reference measurements compensate for environmental effects, which
might influence the spectra. A combination of internal and external reference
measurements provides best result quality and measurement stability.

6.3.1 External reference

NOTE

External referencing needs user interaction.

In order to measure the reflectance of a sample, the measured intensity spectrum of
the sample is divided by a reference spectrum. The reference spectrum is generated
by a white standard in the sample position.
See Chapter6.3.3 "Performing a reference measurement", page26.

6.3.2 Internal reference

NOTE

Internal referencing is performed by the instrument automatically.

Operation Manual NIRMaster™

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6 | Operation

1

2

Büchi Labortechnik AG

The internal referencing is used to minimize the need for external referencing and
user interaction. The interval between two tests can be set via the NIRWare
Application Designer.

6.3.3 Performing a reference measurement

NOTE

For proper device calibration, the external reference or the transflectance adapter
must be placed plane on top of the sample window.

Could otherwise lead to incorrect calibration.

u Do not tilt the external reference / transflectance adapter.
u The external reference must be aligned to match the cut-out of the centering

plate on top of the instrument.

u When working with the transflectance adapter, the spinner device is a

recommended accessory.

u All items / surfaces must be absolutely clean.
u The external reference and the transflectance adapter must be damage and

scratch free.

After the expiration of a predefined time interval (60 min. by default), a dialog (1)
will remind the operator to perform an external reference measurement. The
interval can be set in the Application Designer.
The software guides the user through the process:

When the external reference (2) has been positioned properly, press the
‘Checkmark’ button. The instrument will automatically measure the reference
spectrum.

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Operation Manual NIRMaster™

Büchi Labortechnik AG

Operation | 6

External reference positioning with installed spinner:

External reference positioning for XL addon (without spinner):

For proper device calibration, the external reference must be placed plane on top of
the sample window of the instrument. It is not necessary to remove the spinner. In
case the spinner is installed, turn the external reference until it fits perfectly.
Transflectance adapter positioning with / without spinner:

Operation Manual NIRMaster™

27/46

6 | Operation

3

Büchi Labortechnik AG

When the measurement is done (3), the user will be requested to remove the
external reference.

Press the ‘Checkmark’ button to finish the procedure.

Frequency of reference measurement

An additional external reference measurement is mandatory:

 after an application change

 after a lamp exchange and lamp failure

 after a service (when the top cover has been reinstalled and locked)

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 when changing the add-on or measurement setup

 at every system start / restart

6.4 How to perform a measurement

Detailed instructions how to perform a measurement can be found in chapter 5
"Creating a qualitative and a quantitative application" of the NIRWare Quick Guide.

Operation Manual NIRMaster™

Büchi Labortechnik AG

6.5 Shutting down the instrument

Operation | 6

u Close the NIRWare program on the separate PC.
u Press the ON / OFF button on the left side of the instrument for 1 – 3 seconds to

switch it off.

Operation Manual NIRMaster™

29/46

7 | Cleaning and servicing

7 Cleaning and servicing

7.1 Regular maintenance work

Büchi Labortechnik AG

NOTE

Users may only carry out the servicing and cleaning operations described in this
section.

Any servicing and repair work which involves opening up the casing may only be
carried out by BUCHI service technicians.

Action

Daily

Weekly

Additional information

Yearly

7.2 Cleaning the housing 1 Clean the surfaces in direct
contact with the sample af­ter each measurement in
order to avoid contamina­tion.

7.8 Cleaning the add-ons and

1 After each measurement

the custom sample vessels

7.6 Cleaning the external refer-

1

ence

7.7 Cleaning the spinner 1

7.4 Exchanging the outer filters 1 Check if the filter is clogged
and replace latest every
6'000 h

7.5 Exchanging the inner filters 1 Check if the filter is clogged
and replace latest every
6'000 h

7.10 Exchanging the lamp 1 When defective, latest ev­ery 6'000 h

7.12 Exchanging the laser unit 2 When defective, latest ev­ery 20'000 hours

7.13 Extended system service

2

and testing

30/46

1 - User; 2 - BUCHI service technicians

7.2 Cleaning the housing

NOTE

Avoid scratches on optical surfaces due to cleaning.

Scratches can influence the measurement precision.

u Never use any objects for cleaning which might scratch the optical surfaces.

u Switch off the instrument and all directly connected electronic devices.
u Clean the housing with a soft, lint free damp cloth with mild soapy water.

Operation Manual NIRMaster™

Büchi Labortechnik AG

Cleaning and servicing | 7

u In addition, use surface disinfectant wipes in combination with similar

disinfectant spray on alcohol basis.

u Clean the sample window on top of the instrument.
u Use an antimicrobial wipe.
u Avoid fingerprints on any optical surface.
u For coated optical surfaces, use abrasion-resistant precision cloths.

7.3 How to lift off the top cover

NOTICE

Ingress of particles.

Risk of instrument damage.

u Check proper seating and reliable locking before use.
u Do not operate instrument when housing is open or unlocked.

To get access to the light source and the interferometer it is necessary to remove
the top cover of the instrument.

Operation Manual NIRMaster™

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7 | Cleaning and servicing

1

Büchi Labortechnik AG

u Switch off the instrument.
u Disconnect the external power supply.
u Clean the housing i.e. remove any dust between the upper and lower cover.
u Lift the four black dust flaps (1) two at each side of the instrument.

ð The latches are accessible.

u Turn the housing-key and bring the latches into horizontal position to unlock the

housing.

u Carefully lift off the top cover.
u Unplug the internal power cable.
u To reinstall the cover, re-plug the internal power cable.
u Carefully place the top cover onto the instrument.
u Turn the housing-key and bring the latches into vertical position to lock the

housing.

u Put the four black dust flaps (1) back on.
u Connect the external power supply to the instrument.
u Switch on the instrument.

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Operation Manual NIRMaster™

Büchi Labortechnik AG

Cleaning and servicing | 7

7.4 Exchanging the outer filters

u Pull off the filter frames located at the bottom. NOTICE!Do not tilt the

instrument. The access is possible from the side.

Operation Manual NIRMaster™

33/46

7 | Cleaning and servicing

1

3

2

7.5 Exchanging the inner filters

Büchi Labortechnik AG

u Take out each filter pad.
u Insert new filter pads.
u Reassemble the filter frames.
u Make sure the ventilation slots of the filter frames show into opposite direction

to avoid a shortcut of the cooling airflow.

34/46

u Lift off the top cover.

ð The filter drawers are accessible below the fans.

u Push the drawer (1).

ð The filter holder moves out of its position.

u Pop out the sandwich filter.
u For each filter, place a new filter pad between the metal grids (2).
u Put the filters back in its holders.
u Push the drawers back into position (3).
u Close the housing.

7.6 Cleaning the external reference

NOTE

Do not use any cleaning media with abrasive character which might scratch the
surface.

u For cleaning use abrasion-resistant precision cloths.

Operation Manual NIRMaster™

Büchi Labortechnik AG

7.7 Cleaning the spinner

Cleaning and servicing | 7

u If substances still adhere, clean the surfaces with alcohol.
u Avoid contact with hard objects.
u Do not drop the external reference.
u Keep it in a dry and clean place.

u The spinner can be cleaned in a dishwasher. NOTICE!Not cleaning the spinner

on a regular basis can lead to a reduced force transmission of the inner wheel
and inlay. As a result the sample cup will not rotate.

u The O-ring of the inner wheel needs replacement in case its mechanical treated.
u Replacement is recommended by a service person.

7.8 Cleaning the add-ons and the custom sample vessels

u All BUCHI add-ons can be rinsed and cleaned with disinfectants on alcohol basis.

NOTICE!Spray-disinfection should be used in addition to surface disinfection
with wipes only.

u The following sample vessels can be cleaned in a dishwasher with standard

detergents:

 Petri dishes

 Unbreakable cup

 Spinner cpl.

 XL add-on

 High performance cup

7.9 How to reset the system fuses

NOTICE

Device fuses may be triggered occasionally (e.g. due to voltage peaks).

When fuses trigger frequently action needs to be taken.

u Inform your customer service.
u Do not try to repair or modify the fuses.

Operation Manual NIRMaster™

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7 | Cleaning and servicing

Fuse ok

Fuse triggered

Büchi Labortechnik AG

Precondition:
R The primary fuses are located inside the instrument next to the interferometer

power supply socket.

u Switch off the instrument.
u To get access to the resettable fuses, lift off the top cover as described in

Chapter7.3 "How to lift off the top cover", page31.

u Push in the fuse for reset.
u Switch on the instrument.

7.10 Exchanging the lamp

CAUTION

Risk of minor burns by hot lamp module.

u Do not touch hot parts or surfaces.
u Let the lamp module cool down.
u Do not touch the bulb glass.

NOTE

After lamp-module exchange, a reference spectrum should be generated to match
the individual light intensity output of the module. See Chapter6.3 "Reference
measurements", page25.

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Operation Manual NIRMaster™

Büchi Labortechnik AG

1

2

3

4

5

Cleaning and servicing | 7

u Switch off the instrument.
u Lift off the top cover (1) and put it aside.
u Unplug the mains plug inside the device (2).
u Unplug the power cable (3) of the primary / secondary lamp module.
u Turn the locking lever upwards (4) to unlock the module.
u Carefully pull out the lamp (5).
u Put the new lamp in.
u Turn the locking lever downwards to lock the module.
u Connect the power cable of the primary / secondary lamp module.
u Connect the mains plug inside the device.
u Install the top cover again.
u Switch on the instrument
u Reset the lamp lifetime counter using the separate PC as described in chapter

7.8.4. of the NIRWare Operation Manual.

7.11 Resetting the lamp lifetime counter

To correctly monitor the lamp lifetime the software hour counter has to be reset
after each lamp replacement. See chapter 7.8.4. of the NIRWare Operation Manual.

7.12 Exchanging the laser unit

NOTE

A BUCHI service technician is required to replace the LASER unit.

Operation Manual NIRMaster™

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7 | Cleaning and servicing

7.13 Extended system service and testing

Büchi Labortechnik AG

Over its lifetime, the intensity of the laser light will decrease. It is continuously
monitored by a sensor to be sure levels are above a certain threshold.

Contact BUCHI customer service for the annual extended service and testing.

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Operation Manual NIRMaster™

Büchi Labortechnik AG

8 Help with faults

8.1 Troubleshooting

Help with faults | 8

Problem Possible cause Action

System is over­heated

System does not
power up

External reference
measurement fails

Sample cup does
not rotate

Incorrect measure­ments results

Filter clogged u Exchange outer / inner

filters.

Power outage u Make sure that the

instrument has power.

Built-in resettable fuses or
electronic malfunction

u Reset internal fuses.
u If error persists, call service

for repair.

See Chapter8.3 "Reference
measurement fails", page40

u Clean all optical surfaces in

the measurement path.

u Perform NADIA Chapter8.2

"Enhanced system diagnose
(NADIA)", page39.

Spinner contaminated with oil

u Clean spinner in dishwasher.

or fat

Not enough sample material
available

Sample not homogenious or
representative

u Use sufficient sample

material.

u Take a representative

sample.

u Mix the sample before

measurement.

Humidity of sample material u Only use dry samples.

Temperature of sample mate­rial

Sample cup inadeqate u Only use from BUCHI

Malfunctions or errors which are not listed in the table are to be corrected by a
BUCHI technical engineer. In this case please refer to your local BUCHI customer
service agent.

8.2 Enhanced system diagnose (NADIA)

Additional tests to the SST can be run via the NIRWare Automatic Diagnose (NADIA)
tool. It can be used to verify the condition of the instrument e.g. during service for
an enhanced performance check.
To run NADIA see chapter 5.9 in the NIRWare Operations Manual.

u Wait until the sample

reaches ambient
temperature.

recommended sample cups.
See Chapter10.1.2
"Accessories", page43

Operation Manual NIRMaster™

39/46

8 | Help with faults

8.3 Reference measurement fails

Büchi Labortechnik AG

When the deviation between the stored reference spectrum is out of limit, the
reference measurement will fail. A dialog will show both curves and give details of
the measurement result.
Possible reasons for a reference measurement to fail:

 Optical surfaces (e.g. external reference) are dirty or scratched

 Environmental conditions out of operational range (e.g. condensating humidity at

optical surfaces)

 Defective instrument (e.g. electronic damage)

 After lamp-module exchange

What to do:

u Clean the external reference and the instrument output window.
u Place the external reference onto the output window and press the ‘Rerun’

button to repeat the measurement.

u If measurement still fails, a new reference spectrum can be stored by pressing

the ‘Checkmark’ button. NOTICE!An administrator login is required to store the
new data set. Setting a new reference spectrum should be the last option after
consequent trouble shooting (run SST).

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Operation Manual NIRMaster™

Büchi Labortechnik AG

9 Taking out of service and disposal

9.1 Taking out of service

9.2 Disposal

9.3 Returning the instrument

Taking out of service and disposal | 9

u Switch off the instrument and disconnect it from the mains power supply.
u Remove all cables from the device.

The operator is responsible for proper disposal of the instrument.

u When disposing of equipment observe the local regulations and statutory

requirements regarding waste disposal.

u When disposing, observe the disposal regulations of the materials used. Materials

used see Chapter3.6 "Technical data", page15.

Before returning the instrument, contact the BÜCHI Labortechnik AG Service
Department.

https://www.buchi.com/contact

Operation Manual NIRMaster™

41/46

10 | Appendix

Büchi Labortechnik AG

10 Appendix

10.1 Spare parts and accessories

Use only genuine BUCHI consumables and spare parts in order to ensure correct,
safe and reliable operation of the system.

NOTE

Any modifications of spare parts or assemblies are only allowed with the prior
written permission of BUCHI.

10.1.1 Spare parts

Order no. Image

Spinner 11056771

External reference 11056371

Outer filter holder with pads, 2 pcs 11056672

Set spare filter pads 10 pcs 11056773

Inner filter pads, 10 pcs 11056917

Ferrit sleeve 5 mm 11056714

Ferrit sleeve 6 mm 11056715

Housing-key 11056766

Plug bushing 3-6mm 10 pcs 11056665

42/46

Plug bushing 6-9mm 10 pcs 11056666

Operation Manual NIRMaster™

Büchi Labortechnik AG

Appendix | 10

Order no. Image

Set round cord 10 pcs 11056667

Spinner (inlay-) ring 11056772

Replacement Window HPSC 046246

Primary lamp module N560-001

Adapter plate for gold cell

For both High Performance Transflectance Cells 11056994
or 11056995.

10.1.2 Accessories

Compatibility

Sample holding accessories Easy-Spin

Petri dishes •

High performance cup •

Unbreakable cup •

Small plastic bags •

High performance trans­flectance gold cell

Sample dimensions 100 mm Adaptable 35 mm

*Included in system as described in Chapter3.4 "Scope of delivery", page14.
**See Chapter3.2 "Measurement modes", page13.

Magnetic
spinner*

11056793

XL* glass spacer Adapter plate

for gold cell

•

High performance cup 046259

Operation Manual NIRMaster™

Order no. Image

43/46

10 | Appendix

Büchi Labortechnik AG

Order no. Image

Robust cup 11055058

Glass petri dishes 10 pcs. (up view)

Not suitable for use with Transflectance Cover

Transflectance cover 0.3 mm

Not suitable for use with robust cup

11072073

041636

Transflectance cover for robust cup 11055998

Pressing Stamp

To compress and compact samples like ground meat or
cheese. Stainless steel, approx. 1.8 kg.

11057584

XL-Add-On 11056784

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Operation Manual NIRMaster™

BUCHI Affiliates:

Europe

Quality in your hands

Switzerland/Austria

BÜCHI Labortechnik AG

CH – 9230 Flawil
T [phone]
F [phone]
[e-mail]
www.buchi.com

Italy

BUCHI Italia s.r.l.

IT – 20010 Cornaredo (MI)
T [phone]
F [phone]
[e-mail]
www.buchi.com/it-it

NIR-Online

Germany

NIR-Online GmbH

DE – 69190 Walldor f
T [phone]
F [phone]
[e-mail]
www.nir-online.de

Benelux

BÜCHI Labortechnik GmbH

Branch Office Benelux
NL – 3342 GT Hendrik-Ido-Ambacht
T [phone]
F [phone]
[e-mail]
www.buchi.com/bx-en

Russia

BUCHI Russia/CIS

RU – 127006 Moscow
T [phone]
[e-mail]
www.buchi.com/ru-ru

France

BUCHI Sarl

FR – 91140 Villebon-sur-Yvette
T [phone]
F [phone]
[e-mail]
www.buchi.com/fr-fr

Spain

BUCHI Ibérica S.L.U.

ES – 08960 Barcelona
T [phone]
[e-mail]
www.buchi.com/es-es

America

Brazil

BUCHI Brasil Ltda.

BR – Valinhos SP 13271-200
T [phone]
F [phone]
[e-mail]
www.buchi.com/br-pt

Germany

BÜCHI Labortechnik GmbH

DE – 45127 Essen
T [phone] (Toll Free)
T [phone]
F [phone]
[e-mail]
www.buchi.com/de-de

United Kingdom

BUCHI UK Ltd.

GB – Suffolk CB8 7SQ
T [phone]
F [phone]
[e-mail]
www.buchi.com/gb-en

USA/Canada

BUCHI Corporation

US – New Castle, DE 19720
T [phone] (Toll Free)
T [phone]
F [phone]
[e-mail]
www.buchi.com/us-en

Asia

China

BUCHI China

CN – 200233 Shanghai
T [phone]
F [phone]
[e-mail]
www.buchi.com/cn-zh

Korea

BUCHI Korea Inc.

KR – Seoul 153-782
T [phone]
F [phone]
[e-mail]
www.buchi.com/kr-ko

India

BUCHI India Private Ltd.

IN – Mumbai 400 055
T [phone]
F [phone]
[e-mail]
www.buchi.com/in-en

Malaysia

BUCHI Malaysia Sdn. Bhd.

MY – 47301 Petaling Jaya,
Selangor
T [phone]
F [phone]
[e-mail]
www.buchi.com/my-en

BUCHI Support Centers:

South East Asia

BUCHI (Thailand) Ltd.

TH-Bangkok 10600
T [phone]
F [phone]
[e-mail]
www.buchi.com/th-th

Middle East

BÜCHI Labortechnik AG

UAE – Dubai
T [phone]
F [phone]
[e-mail]
www.buchi.com

Indonesia

PT. BUCHI Indonesia

ID – Tangerang 15332
T [phone]
F [phone]
[e-mail]
www.buchi.com/id-in

Singapore

BUCHI Singapore Pte. Ltd.

SG – Singapore 609919
T [phone]
F [phone]
[e-mail]
www.buchi.com/sg-en

Latin America

BUCHI Latinoamérica
S. de R.L. de C.V.

MX – Mexico City
T [phone]
[e-mail]
www.buchi.com/es-es

Japan

Nihon BUCHI K.K.

JP – Tokyo 110-0008
T [phone]
F [phone]
[e-mail]
www.buchi.com/jp-ja

Thailand

BUCHI (Thailand) Ltd.

TH – Bangkok 10600
T [phone]
F [phone]
[e-mail]
www.buchi.com/th-th

We are represented by more than 100 distribution partners worldwide.
Find your local representative at: www.buchi.com