This documentation is protected by copyright. All rights reserved.
Although all the information given in this documentation has been checked with great care, errors
cannot be entirely excluded. Should you notice any mistakes please send us your comments using the
address given above.
13 Index ........................................................................................................ 115
4
▪▪▪▪▪▪▪
1 Introduction
The versatile sampling mechanism of the MultiVial Analyzer
Thank you for selecting the XDS MultiVial Analyzer, manufactured by FOSS. This instrument is the
third generation in a series of instruments designed for precision NIR measurement, characterization
of organic materials, and qualification of known materials to allowable quality parameters.
The XDS MultiVial Analyzer is designed for stable operation in typical laboratory environments, while
providing the precision and accuracy users have come to expect of FOSS near-infrared (NIR)
instruments.
The MultiVial Analyzer comes with a choice of one vial tray. Others are optional.
The MultiVial Analyzer uses a proven monochromator design, employing a digitally-controlled
dispersive grating, sensitive detection devices, and state-of-the-art circuitry to enhance signal output
and minimize any extraneous noise that might influence performance. The XDS MultiVial Analyzer
uses various patented algorithms to provide superior accuracy and transferability between like
instruments. These software algorithms must be used to assure method transfer between
instruments. See section 7.1 for full details.
offers a movable sampling platform, suitable for handling
multiple vials or other samples. The software supports
acquisition of spectra in an unattended mode, freeing the
operator to prepare other samples, analyze data, or perform
unrelated tasks.
Vision supports four different default vial diameters, to
speed set-up. For custom vial diameters, set-up is
straightforward. The MultiVial Analyzer also offers variable
spot size, to focus energy on small vials.
Horizontal orientation of the sample transport mechanism facilitates loading, and prevents material
spills inside the sampling area of the instrument. The MultiVial Analyzer supports use of normal
sampling accessories for the XDS Rapid Solids Analyzer.
Sampling may be performed on two different physical levels, either directly on the sample window
(as with a normal XDS RCA) or on the vial tray, which is slightly raised from the glass. For this reason,
5
▪▪▪▪▪▪▪
Icon
Status
Green when power is ON
Amber when connected to network or direct
Green when instrument lamp is ON
Red when scanning reference or sample
Green when module is properly attached
two sets of optical (“reference”) calibrations are stored in the instrument. It is important to Reference
Standardize on the correct level, as prompted by Vision Software. This aids in method transfer, and is
explained in the section on Reference Standardization.
This instrument uses near-infrared (NIR) spectral energy to illuminate the sample. By measuring the
energy reflected off (or passing through) the sample, chemical information and composition may be
determined. This information may be used for quantification of constituents, or for comparison to a
library of known materials, providing identification and qualification of materials.
Vision Software™ offers an easy user interface, using the familiar interface provided with previous
generations of NIR instrumentation. All functions required to perform identification, qualification, and
quantitation are provided, with easy tools for interpretation of results. Vision offers full instrument
diagnostics, with built-in acceptance specification tables for all tests. Vision stores all results in a
diagnostic database for later lookup, with control chart views of results tracked over time.
The menu-driven, validated Vision Software package meets all requirements of CFR 21 Part 11,
covering Electronic Records and Signatures. Vision comes with a full manual for operation and theory
of operation, with complete instructions for analytical development.
The XDS Analyzer provides 0.5nm data points, and uses several innovative methods to assure
wavelength accuracy and repeatability. Wavelength positions are traceable to NIST SRM-1920.
Because SRM-1920 does not have certified wavelengths above 2000 nm, an additional wavelength
absorber is included in the calibration standard, to provide stable wavelengths beyond 2000 nm.
These additional wavelengths have been independently measured on calibrated instrumentation to
ascertain the wavelength positions used.
A panel of 6 LED indicators provides information to the user on these functions:
connection
Green when stable operating temperature is reached
Instrument communication uses RJ-45 network connections, to eliminate issues involved with long
runs of RS-232 cable. An Internet Protocol (IP) address is dynamically requested upon connection.
6
▪▪▪▪▪▪▪
This IP address may be permanently installed, if required for network purposes. RJ-45 connection also
permits remote interrogation and diagnostics checks of the instrument, if necessary and authorized.
The instrument enclosure is completely sealed to prevent contamination by dust or other substances.
The cooling fans operate outside the main enclosure, and are thermally linked to internal fans that
maintain a constant temperature inside the instrument enclosure. There is no airflow drawn into the
optics chamber instrument. An external fan-cooling loop is provided in the side chassis, with thermal
conduction from the inside of the optics chamber. This avoids contamination of the instrument in
dusty environments. An air filter is built into the door of this chamber. For cool environments, heaters
are embedded in the thermal transfer block to raise temperature when required.
Lamp changes are performed through a single panel on the rear surface of the instrument. The lamp
is easy to remove and replace, and requires no special tools or expertise.
7
▪▪▪▪▪▪▪
2 Site Readiness
Like most precision instruments, the MultiVial Analyzer (RCA) is sensitive to environmental conditions
that can affect its performance and useful life. Observe the following guidelines when selecting a site
and installing the instrument:
2.1 Temperature and Humidity
The XDS Analyzer is designed to work in ambient air temperatures from 40-95°F (4.5-35°C).
Use the XDS Analyzer only in 10-90% relative humidity levels, non-condensing. Rapid changes in
humidity can cause interferences by adding trace moisture absorptions to the spectra. In general,
lower humidity levels are preferred.
The Performance Test (a comprehensive instrument diagnostic test in Vision software) is somewhat
sensitive to changes in ambient humidity, and the Performance Test may fail under conditions of
extreme humidity, or rapidly varying humidity.
2.2 General Environment
Minimize exposure of the monochromator to dust.
Inspect the fan filter at least monthly. If an accumulation of lint, dust, or other matter has
accumulated, pull open the right-hand panel from the instrument. Replace the filter. If dust has
accumulated on the fans, carefully wipe them clean with a moist soft cloth. Do not distort or damage
the fan blades or fins, as this will impede cooling.
Do not place the instrument directly near any HVAC duct. The direct flow of heating or cooling air
will cause the instrument to exhibit high noise during the Performance Test.
2.3 Vibration
Install the XDS Analyzer where it will not be affected by bench vibration from grinders, blenders,
stirrers, or mixers.
Never permit hammering or other physical impact on the bench top supporting the XDS Analyzer or
its computer.
2.4 Electrical Power
Power should be a single, separate, stable, transient-free filtered AC circuit. The circuit should have
surge protection.
Operating voltage for the instrument is 100-240VAC, 50/60Hz. The power supply is self-switching
and will provide the correct operating voltage to the instrument.
Maximum power consumption is 750W.
2.5 Instrument Communication
The XDS MultiVial Analyzer can communicate directly with the computer by use of a UTP Crossover
Cable (gray cable) supplied with unit.
Alternatively, the instrument may be accessed directly through a network connection. This uses a
standard RJ-45 type cable, such as CDW #074092, available from CDW Computer Centers, Inc. The
8
▪▪▪▪▪▪▪
instrument detects network capability and optimizes communication speed.
The computer that operates the instrument must have clear access through the network, and be
configured to communicate properly. This communication is the responsibility of your on-site
network personnel.
Full instructions are given in section 3.0.
2.6 Instrument Dimensions and Weight
The XDS MultiVial Analyzer dimensions are:
• Width: 18.0” (457 mm)
• Height15.25” (387 mm)
• Depth22.5” (572 mm) front to back
Leave a minimum of 3” (76mm) around the instrument sides and back for airflow and access space.
Leave as much space as possible in front for sample handling.
•Weight 68.7 pounds (31.25 kg)
Follow lifting instructions (on last page) when moving the instrument. Avoid injury.
9
▪▪▪▪▪▪▪
3 XDS Instrument Connection
The XDS instrument may be connected to the host computer in one of two ways: If the XDS
Instrument will be used as part of a network, use the Network Connection method shown
immediately below. If there are not enough active network ports near the XDS instrument, a hub or
router may be used.
This section assumes use of Windows® 2000, XP, or later versions of Windows Operating Systems.
For computers using Windows 95, 98, or NT 4.0, we recommend upgrade of the computer and
operating system to current specifications.
CAUTION: METROHM NIRSystems does not recommend the use of two network cards under any
circumstances. Do not use Direct Connection to the instrument along with a network connection to
the company network. The use of two network cards -- on one data bus in the computer – may
result in lost commands, lost data, and unsatisfactory software operation. Metrohm cannot be
responsible for software and instrument problems resulting from the use of two network cards in the
host computer.
This information is correct as of the time of original publication. Changes to computers, operating
systems, and network protocols may require revision of this information without notice.
3.1 Network Connection, connected to an active network port as
shown
This is the preferred method of instrument communication when a connection to the company Local
Area Network (LAN) is necessary. Specific information about this method follows:
• The XDS instrument should be connected -- with a “patch” cable – to the network port.
• Upon power-up, the XDS instrument will request a dynamic IP address from the network
server. This is normally assigned in 5 to 10 seconds.
•The XDS instrument uses a proprietary, encrypted command language. It cannot be activated
by any program except Vision, or Metrohm programs designed to operate the instrument.
Therefore, the instrument maintains “Closed System” status under 21 CFR Part 11 rules. No
hacking or support of viruses is possible with XDS instruments.
10
▪▪▪▪▪▪▪
•The XDS instrument appears just like a network printer (or other peripheral device) on the
LAN system. It generates no signals, and only responds when commanded by an authorized
user, logged into Vision software.
•This is the easiest connection method for XDS instruments.
3.2 Direct Connection (without network)
This method allows users to connect to the instrument when there is no network present. In such
cases, a “crossover cable” (provided) is used. The XDS instrument, upon power-up, requests a
dynamic IP address. When none is supplied within 45 seconds, the XDS instrument concludes that no
DHCP server is available. It then defaults to an internal IP address which the computer may use for
“direct communication”.
This method of hookup should not be used when the computer is also connected to a network. Such
connection may result in lost commands, lost data, and unsatisfactory software operation. Metrohm
cannot be responsible for software and instrument problems resulting from the use of two network
cards in the host computer.
For IT personnel, it may be helpful to understand the sequence of events used by the XDS instrument
and Vision software when establishing an electronic connection. These are explained.
3.3 Overview of XDS Instrument Communication
The XDS instrument may be connected to LAN systems in the same manner as any printer or other
peripheral Ethernet-enabled device. These key items will help understand the communication
methods. See the flowchart diagram on next page.
1. The XDS instrument maintains “Closed System Status” under 21 CFR Part 11 guidelines. It
uses a proprietary, encrypted command language. It is not susceptible to hacking or virus
attacks.
2. The XDS system may only be addressed using proprietary software (usually “Vision”) which
can only be entered by an authorized user, using the “two-token” method of entry. (Unique
User ID and password)
3. Upon being powered up on a LAN, the XDS instrument requests a “dynamic” IP address from
11
▪▪▪▪▪▪▪
the DHCP server which controls the LAN. This IP address is normally granted promptly
(typically in 5-10 seconds) so the instrument can function on the LAN. Most DHCP servers
track the XDS instrument by the “MAC” (Machine Access Code) to later re-assign that same IP
address whenever the XDS instrument is on the LAN.
4. If there is no DHCP server available to assign an IP address (a free-standing router may serve
the same DHCP function), the XDS instrument will “time out” in 45 seconds --and it will know
that it is not attached to an active LAN. It will then default to an internally-stored default IP
address. This address, 169.254.0.2, is used for local, free-standing communication only. In
such cases, a crossover cable, or a hub with two patch cables, should be used to connect the
computer and the XDS instrument.
5. Upon the next power-down and subsequent power-up of the XDS instrument, it will again
request an IP address of the DHCP server. It will go through the same cycle, eventually
reverting to the stored default IP address. This is intentional.
6. A dynamic IP address is the preferred method of XDS instrument connection. The default IP
address is only used when no DHCP server is available to assign a dynamic IP address.
A short glossary of terms follows. See the flowchart diagram for XDS instrument communication
which visually outlines the items explained above.
3.4 Flowchart Diagram of XDS communication protocol
12
▪▪▪▪▪▪▪
3.4.1 Microsoft Windows Firewalls
The Microsoft Windows® Firewall on the PC may interfere with Vision communication. To assure
communication, follow these steps:
• Enter Control Panel, Security Center.
• On the “General” Tab, be sure that “exceptions” are allowed. (Un-click “Don’t allow
exceptions”.)
• On the “Exceptions” Tab, click “Add Program”.
• Select Vision from the list of programs – click on it. (Vision must be installed to appear on the
list.)
•Click on “OK” at each window to exit Control Panel.
3.4.2 Network Evolution Issues
This document is as correct as possible at the time or writing. However, network management is an
evolving discipline, and conditions will change. Some of the drivers for change include network
security, authentication, and data integrity. Technology changes factor into all of these issues.
Because the network communication environment is complex and ever-changing, we have tried to
provide the basic information needed for connection of the XDS instrument. 95% of users will have
no connection problems, if these instructions are followed.
In the rest of the cases, there may be network issues, corporate restrictions, or other issues which
inhibit easy connection. The troubleshooting section covers some of the most common problems.
In all cases, we recommend minimal tampering with computer settings. This can cause instability, and
may be prohibited by company policies.
At this time, we recommend Microsoft Windows® XP as the easiest operating system by which to
establish network communication. We strongly recommend that Windows 95, 98, and NT 4.0 be
avoided, as they require considerable expertise in network configuration.
3.4.3 Quick Glossary of Terms:
DHCP:
The Dynamic Host Configuration Protocol (DHCP) is an Internet protocol for automating the
configuration of computers that use TCP/IP.
DNS Server:
A Domain Name Server. DNS Servers run special-purpose software, as part of the Domain Name
System, for managing enterprise networks.
IP:
An Internet Protocol (IP) address is a numerical identification and logical address that is assigned to
devices participating in a computer network utilizing the Internet Protocol for communication
between its nodes.
IPv4:
IPv4 refers to “Internet Protocol version 4” which is the fourth revision in the development of the
13
▪▪▪▪▪▪▪
1. Log into Vision with your User ID and
Internet Protocol (IP) and it is the first version of the protocol to be widely deployed. Together with
IPv6, it is at the core of standards-based internetworking methods of the Internet and is still by far
the most widely deployed Internet Layer protocol. XDS Instruments use IPv4.
LAN:
A local area network (LAN) is a computer network covering a small physical area, like a home, office,
or small group of buildings, such as a corporate site, a university, or an airport. These are often called
“enterprises”.
Subnet Mask:
“Subnetting” is used to break a large network into smaller sections. This can enhance efficiency, raise
speeds, and reduce “packet collisions” within the network. To accomplish subnetting, “Subnet
Masks” may be applied to separate one section of the network from another. A subnet mask typically
takes the form “255.255.255.0” or something similar. This scheme is becoming obsolete, as new
network management methods are being implemented.
TCP/IP:
(Transmission Control Protocol/Internet Protocol) is the basic communication language or protocol of
the Internet.
3.5 Connection in Vision
Password.
Click on Configure, Input as shown.
14
▪▪▪▪▪▪▪
2. Highlight “NIRSystems XDS-
series Instrument Driver” as
3. When Vision “finds”
4. If the IP Address field is empty, the user should consult “Troubleshooting Connection
shown, then click on
“Configure”.
Information:
At this point, Vision requests any
XDS instrument on the local area
network (LAN) to report
connection status. This may take a
few moments.
If the instrument is not on a LAN,
and instead is connected with a
crossover cable, this will take a
minute or more. Vision first
requests a dynamic IP address, If
no server or router is available to
assign an IP address, Vision waits
45 seconds, then searches for the
default instrument IP address, in
the event of Direct Connection
using a crossover cable.
the instrument on the
LAN, it will be shown.
The dynamic IP
address (assigned by
Highlight the instrument and
click “OK”.
the server) is shown,
along with the XDS
Serial number. The
instrument is shown
as “Available” on port
2083.
Problems”.
3.6 Troubleshooting Connection Problems
Many connection problems are easily solved, especially with Windows® XP operating systems.
Windows XP is currently the preferred operating system, and has enhanced connectivity over other
operating systems. Vista is good also, but may impose user security restrictions. Windows 2000 is
almost as simple, but may require an extra step or two, as discussed.
15
▪▪▪▪▪▪▪
1. Vision cannot see any
Solution: By expanding the
2. Vision still sees no
If your computer uses Windows 95, 98, or NT 4.0 for the operating system, we strongly recommend
upgrade to Windows XP for easiest connectivity. This may require a full computer upgrade, as older
computers may not have the processor speed, memory, or connectivity required to run Windows XP
with full Ethernet compatibility.
instrument on the
connection path.
Click on the “down
arrow” at the right
side of the empty field
to see if instrument(s)
are shown.
field, Vision can display the
instruments shown.
Note that only the top
instrument, Serial #30100878, is “Available”. Highlight
it and click “OK”.
instrument(s) after
expanding the field.
This indicates
connection or
network issues.
Verify Cable Type:
Verify correct cable type for hookup. Most networks use “patch” cables. Free-standing systems use a
“crossover cable”. Power down the XDS instrument, then power it back up. Wait 120 seconds for the
XDS instrument to fully reset its communication. If an instrument is shown, proceed to “Acquire”,
“Connect” in Vision.
If this does not resolve the problem, continue to the next section.
3.6.1 Network Troubleshooting Overview
If no XDS instrument shows as “available”, there may be a setting which should be changed. It may
be necessary to contact your IT department for assistance with these issues.
First, verify that the network has a DHCP Server. If no DHCP server is available, the instrument must
be connected by Direct connection, using a crossover cable. If this is the case, proceed to the section
entitled “Direct Connection Troubleshooting Overview”.
Network Solution 1:
16
▪▪▪▪▪▪▪
Check Internet Protocol (TCP/IP) Properties. (You may need to contact your IT department to follow
these steps.)
• Click on Start, then Control Panel
• Double-click on Network Connections
• Double-click on Local Area Connection
• Click on Local Area Connection Properties
• Click on Internet Protocol (TCP/IP)
• Click on Properties
The full path, from Network Properties forward to Internet Protocol (TCP/IP) Properties, is shown:
17
▪▪▪▪▪▪▪
Verify these settings:
Network Solution 2:
•Obtain an IP address
automatically
•Obtain DNS server address
automatically
When finished, click “OK”. Close all
other boxes opened for this
verification.
If the settings were not set properly,
it may be necessary to exit Windows
XP, then re-enter XP, to have the
correct settings take effect. If in
doubt, do this and try XDS instrument
communications again after this takes
effect.
Returning to the Local Area
Connection Status dialog box, note
these items for the computer:
•Address Type:
(should be “assigned by
DHCP”)
•IP Address:
Write this address down for
the next step
•Subnet Mask:
Write this down for the
next step
If connection cannot be achieved,
it may be necessary to verify that
the XDS instrument is installed
“within the IP address range” of
the computer.
18
▪▪▪▪▪▪▪
Network Solution 3:
The IT department at your company can verify if the network
Network Solution 4:
Network Retry, XP and
Verify network has full IPv4
compatibility.
Some networks have moved to
Ipv6 (Internet Protocol version 6)
which uses different address
formats.
Verify that the Firewall on the
computer has Vision loaded as an
“exception”.
This is located under “Control
Panel”, “Windows Firewall”.
If this is not enabled, click “Add
Program” and select “Vision” from
the list.
When finished, click “OK”
offers full Ipv4 compatibility. If the network has migrated to
Ipv6 operation, a “compatibility pack” may need to be
loaded to support Ipv4-enabled devices.
Vista:
Windows XP and Vista users
should click on “Retry
Only”. This command resets
the communication port,
and allows Vision to “find”
the instrument, if connected
properly.
19
▪▪▪▪▪▪▪
Network Retry, Windows
Direct Connection Solution 1:
2000:
Windows 2000 users should
click on “Retry/Reset”. This
command resets the
communication port, and
also resets Windows 2000
to the proper state to
connect using a dynamic IP
address in the XDS
instrument.
3.6.2 Direct Connection Troubleshooting Overview
If no XDS instrument shows as “available”, the computer may need to be configured for the IP
address range of the XDS instrument. It may be necessary to contact your IT department for
assistance with these issues.
First, verify the following:
• The instrument is free-standing not connected to a network with DHCP server
• There is only one network card in the computer
• A crossover cable is used between the XDS instrument and the computer
If these conditions are met, please proceed.
If using a crossover cable, verify that
the computer is communicating in the
same IP range as the XDS instrument.
The XDS instrument default IP address
is 169.254.0.2, as shown. This address
calculator gives the allowable computer
IP address range as 169.254.0.1
through 169.254.2.254.
DO NOT use 169.254.0.2 in the
computer!
Set the computer IP address to either:
• 169.254.0.1, or
• 169.254.0.3.
20
▪▪▪▪▪▪▪
Direct Connection Solution 2:
Power down the XDS Instrument, then power it back
up. Wait 120 seconds, for the instrument to determine
Direct Connection
the correct method of Ethernet communication. Please
do not click anything for this amount of time, or
communication may be interrupted.
Solution 3:
Click on “Try Direct Connect
with Default IP”. This
searches for the default IP
address stored in the
instrument.
When the instrument is
found, click “OK”
This should resolve the connection issue. Proceed to “Acquire” and “Connect” in Vision.
21
▪▪▪▪▪▪▪
4 Assembly of the Instrument
The XDS Analyzer will be assembled and installed by a trained representative of Metrohm. This
person will perform a full suite of diagnostics to verify correct operation, and will explain basic
operating points. Assembly information is given as a guide for the user, should re-assembly ever be
required due to an instrument move or for other reasons.
Verify that the following items have been received in good condition:
• Metrohm XDS Monochromator
• MultiVial module
• Vision Spectral Analysis Software (Vision Manual is on CD)
• Spare Lamp
• Accessory Kit, containing cords, cables, standard tray, and other required items
• Safety Manual for CE certification
• Instrument Test Results Packet
(Packaging of items may vary from that shown.)
The serial number of the instrument and module are located on serial plates on the left side, when
facing the instrument. These serial numbers should match the serial numbers marked on the shipping
papers.
When using Vision software, the software will automatically read the monochromator serial number.
The module serial number must be entered manually, and is located on the module serial number
plate on the left side of the module, facing the instrument.
22
▪▪▪▪▪▪▪
DO NOT OPERATE OR TROUBLESHOOT WITH THE LID OPEN. SUNLIGHT MAY CONFUSE
1
2
Place the monochromator on the lab bench
3
Open the right-hand panel of the
THE OPTICAL INTERRUPTERS USED TO POSITION THE SAMPLE CARRIAGE. THIS MAY
CAUSE AN “X-Y POSITIONING ERROR” TO BE REPORTED.
Follow the assembly sequence that begins on the next page:
Load Vision Spectral Analysis Software onto
the computer designated to operate the
XDS instrument.
in the position shown.
instrument. Pull it gently by a fin, until the
catch releases. This panel opens to about a
45-degree angle for access to connectors,
and for filter inspection. Avoid scratches or
damage.
23
▪▪▪▪▪▪▪
4
Gently thread the AC power cable and
5
Insert the AC power cable into the AC
6
Attach the RJ-45 cable to the network
network cable through the lower right
corner of the instrument access area as
shown.
The cables should snap into the black
holder. The innermost position is large, to fit
the power cord. If the power cord is in the
wrong location, the door may not close
fully.
The network cable may go into either of the
other two locations.
power block as shown.
connector on the instrument. If using Direct
Connection, use the gray cable from the
instrument accessory kit.
If using network connection, do not use the
gray cable, as it is a “UTP crossover” cable
and will not work with a network. Use a
network cable as described in section 3.0.
7 Close the outer cover of the instrument.
Push gently to the final closed position. It
should latch securely.
24
▪▪▪▪▪▪▪
8
Position the sampling module directly in
front of the monochromator.
9
Lift the release handle on the
10
When the catches are fully engaged to the
11
Plug the AC power cord into a grounded AC outlet. A surge protector or Uninterruptible
This photo shows the mating connection
plates, prior to final alignment and
assembly. The locating pins help find the
final position.
The latches are used to lock the module in
position.
monochromator and engage the module
“catches” to the locking togs on the
monochromator. (Module not shown to
allow a good view of handle.)
Push monochromator and module together
firmly (with handle up) then lower the
release handle.
locking togs, push the release handle down
all the way.
This automatically engages the electrical
connector and fiber optic interface, and
maintains proper alignment of the module
to the instrument.
The final assembly is as shown.
Power Supply (UPS) is recommended for best operation.
25
▪▪▪▪▪▪▪
12
If using a network, use a non-crossover type
13
When all the above assembly is finished,
14
Prepare to establish communication from
cable as listed in section 3.0. Plug the RJ-45
network connector into a functional network
port.
If this requires approval from a network
administrator, it should be properly approved
for hookup.
For “Direct Connection” the gray cable from the
instrument plugs directly to the computer
network jack. (Use the cable supplied with the
instrument.)
turn on the power switch on the
monochromator. It is located on the lower
surface, on the right-hand side as shown.
The monochromator performs some
initialization tests, which take a moment.
Some noises will be heard as items find their
initial positions. This is normal.
Vision to the XDS instrument. This is
detailed in Section 6.0, Vision Software.
This completes assembly of the MultiVial Analyzer.
26
▪▪▪▪▪▪▪
5 XDS MultiVial Module
The MultiVial Analyzer is designed to provide
The XDS MultiVial Analyzer is primarily designed for vial sampling, which is the focus of this manual.
Optional sampling devices are available, and are also described following the vial information. For
optional sampling accessories, please contact your Metrohm NIRSystems distributor.
5.1 Introduction to Vial Analysis
sampling for trays of vials, like that shown at
right. This provides for a greater degree of
automation, and permits the operator to
perform sample loading and other duties while
one rack is being scanned by the instrument.
This extends the usefulness of the instrument
into a routine analytical tool, since no operator
input is required, once the sample information
is entered and the rack is in place. Spectral
information for each vial is acquired and
stored, and the calibration or library
identification is automatically applied.
Partial racks may be run, and the order of scanning determined by the user. Vision provides easy
graphical tools to make setup easy and accurate. No special software skill is required to set up the
instrument for routine analysis, once the calibration is in place.
Because the MultiVial may be used with different size vials, Vision accommodates setup by offering a
screen to help define the tray dimensions, including vial spacing. The number of columns and rows of
vials is entered, along with the manufacturer’s nominal diameter and tolerance. Vision takes this
information and provides centerline data for each bored hole in the tray, which can be used for
machining.
There are four default vial sizes set up in Vision, for commonly-used vials. The 15mm vial diameter is
shown as an example:
The setup screen for sampling is straightforward and easy to use. An example is shown:
27
▪▪▪▪▪▪▪
From the menu bar, select Configure, Tray.
Step by step instructions are given later in this manual. Please see Section 6.2 for full information.
It is important that the “spot size” adjustment be set up properly for a given vial size. This is also
covered in the section on Vision. Normally spot size should be no larger than 80% of vial size.
However, this is not pre-set, as users may wish to scan a smaller area.
5.2 Creation of a Custom Vial Size
Most users will work with one of the standard vial sizes offered. However, for setup of custom sizes,
this information is provided. To create a custom vial diameter, follow these steps:
28
Loading...
+ 87 hidden pages
You need points to download manuals.
1 point = 1 manual.
You can buy points or you can get point for every manual you upload.