jenway 7315 User manual

Spectrophotometers
Models 7310 & 7315
Operating Manual
731 005 REV D/06-10

3
Safety
Please read this information carefully prior to installing or using this equipment.
1. The unit described in this manual is designed be operated only by trained personnel. Any adjustments,
maintenance and repair must be carried out as defined in this manual, by a person qualified to be aware
of the hazards involved.
2. It is essential that both operating and service personnel employ a safe system of work, in addition to
the detailed instructions specified in this manual.
3. Other than for those items defined in the maintenance procedures herein there are no user serviceable
items in this instrument. Removal of covers and attempted adjustment or service by unqualified personnel
will invalidate the warranty and may incur additional charges for repair.
4. References should always be made to the Health and Safety data supplied with any chemicals used.
Generally accepted laboratory procedures for safe handling of chemicals should be employed.
5. If it is suspected that safety protection has been impaired in any way, the unit must be made inoperative
and secured against any intended operation. The fault condition should immediately be reported to the
appropriate servicing authority.

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Contents
Page
Safety 3
SECTION 1 - Introduction 8
1.1 Instrument description 8
1.2 Instrument specification 8
SECTION 2 - Installation 12
2.1 Unpacking 12
2.2 Installation 12
2.3 Display 13
2.4 Controls 14
2.5 Rear panel 15
2.6 Front panel 15
SECTION 3 - Theory and practice of spectroscopy measurements 16
3.1 Theory of spectroscopy measurement 16
3.2 Spectroscopy measurement 16
3.3 Good practice guidelines 17
SECTION 4 - Instrument setup 19
4.1 Navigating and screen setup 19
4.2 Time and date 20
4.3 Instrument settings menu 20
4.4 Security and setting passwords 21
4.4.1 Setting security codes 21
4.4.2 Settings lock 21
4.4.3 Method lock 21
4.5 Mode selection 22
4.6 Diagnostics 22
4.7 GLP settings 22
4.8 Screen contrast 23
4.9 Lamp save 23
SECTION 5 - Photometrics 25
5.1 Mode specific parameters 25
5.2 Method set up 25
5.2.1 Selecting a wavelength 26
5.3 Calibration 26
5.4 Sample measurment 26
SECTION 6 - Concentration 27
6.1 Mode specific parameters 27
6.2 Method setup 27
6.2.1 Selecting a wavelength 27
6.2.2 Settings 28
6.2.2.1 Selecting concentration units 28
6.2.2.2 Changing the resolution 29
6.2.2.3 Using a standard 29
4

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6.2.2.4 Using a factor 29
6.3 Calibration 29
6.3.1 Calibrating to a standard 29
6.3.2 Calibrating to a factor 30
6.4 Sample measurement 30
6.4.1 Measuring a sample after calibrating to a standard 30
6.4.2 Measuring a sample after calibrating to a factor 30
SECTION 7 - Spectrum 31
7.1 Mode specific parameters 31
7.2 Method setup 32
7.2.1 Scan settings 32
7.2.1.1 Selecting absorbance or % transmittance 32
7.2.1.2 Setting start and end wavelengths 32
7.2.1.3 Setting the scan interval 33
7.2.1.4 Y-axis scaling 34
7.3 Calibration 34
7.4 Sample measurement 34
7.5 Data analysis 35
7.5.1 Peaks and valleys threshold 35
7.5.2 Peaks and valleys table 36
7.5.3 Spectral points analysis 36
SECTION 8 - Quantitation 38
8.1 Mode specific parameters 38
8.2 Method setup 39
8.2.1 Selecting a wavelength 39
8.2.2 Quantitation table 39
8.2.2.1 Selecting number of standards 39
8.2.2.2 Selecting concentration units 39
8.2.2.3 Changing the resolution 40
8.2.2.4 Selecting absorbance or % transmittance 40
8.2.2.5 Adding standards 40
8.2.3 Standard curve 40
8.2.3.1 Creating a new standard curve 41
8.3 Calibration 42
8.4 Sample measurement 42
8.5 Data analysis 43
SECTION 9 - Kinetics 44
9.1 Mode specific parameters 44
9.2 Method set up 45
9.2.1 Kinetics settings 45
9.2.1.1 Y-axis scaling 45
9.2.1.2 Setting lag time or start on level 46
9.2.1.3 Selecting absorbance or % transmittance 46
9.2.1.4 Changing the resolution 47
9.2.1.5 Selecting concentration units 47
9.2.1.6 Using a standard 47
9.2.1.7 Using a factor 47
9.2.1.8 Selecting a wavelength 48

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9.2.1.9 Setting the kinetics measurement time 48
9.3 Calibration 48
9.4 Sample measurement 48
9.5 Data analysis 49
SECTION 10 - Saving, printing and autologging 51
10.1 Saving methods 51
10.1.1 Saving methods to internal memory 52
10.1.2 Saving methods to USB memory stick 52
10.2 Opening methods 52
10.2.1 Opening methods from internal memory 52
10.2.2 Opening methods from USB memory stick 53
10.3 Deleting methods 53
10.4 Saving results 53
10.5 Opening results 54
10.6 Deleting results 55
10.7 Printing 55
10.7.1 Print setup 56
10.7.1.1 Print setup – photometrics and concentration 56
10.7.1.2 Print setup - spectrum 56
10.7.1.3 Print setup – quantitation 57
10.7.1.4 Print setup – kinetics 57
10.7.2 Printing results 57
10.8 Autologging 58
10.8.1 Setting the number of sample repetitions 58
10.8.2 Selecting result’s destination 59
10.9 Connecting to a PC 59
SECTION 11 - Accessories and spare parts 60
11.1 Optional accessories 60
11.2 Connecting the accessories 60
11.2.1 Internal printer 60
11.2.2 Passive accessories 61
11.2.3 Active accessories 61
11.2.3.1 Automatic 8 cell turret 62
11.2.3.2 Peltier 62
11.2.3.3 Sipper pump 63
11.2.3.4 Combined sipper peltier pump 64
11.3 Using the accessories 65
11.3.1 Automatic 8 cell turret 65
11.3.1.1 Supporting creation of a standard curve in quantitation 65
11.3.2 Peltier 66
11.3.3 Sipper pump 66
11.3.3.1 Manual sipper pump settings 66
11.3.3.2 Timed sipper pump settings 67
11.3.4 Combined sipper peltier pump 69
11.4 Spares 70
SECTION 12 - Maintenance and service 71
12.1 Routine maintenance 71
12.2 Lamp replacement 71
12.2.1 Tungsten halogen lamp replacement 71

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12.2.2 Xenon lamp module replacement 71
12.3 Service 72
SECTION 13 - Troubleshooting 73
13.1 Error codes 73
13.2 Troubleshooting guide 75
13.3 Technical support 75
SECTION 14 - Declaration of conformity 76
SECTION 15 - Glossary of icons 78
Index 85

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SECTION 1 - Introduction
1.1 INSTRUMENT DESCRIPTION
The 7310 and 7315 spectrophotometers are suited to a wide range of applications in education,
quality control, environmental and clinical analysis. The 7310 is a visible spectrophotometer covering
a wavelength range from 320nm to 1000nm. The 7315 is a UV/Visible spectrophotometer with a
wavelength range from 198nm to 1000nm. Both models have five measurement modes: photometrics,
concentration, spectrum scanning, quantitation and kinetics. These instruments use icon driven software
and have an improved navigation system for easy and intuitive usability.
1.2 INSTRUMENT SPECIFICATION
7310 7315
Wavelength
Range 320 to 1000nm 198 to 1000nm
Resolution 1nm
Accuracy ± 2nm
Repeatability ± 0.5nm
Spectral bandwidth 5nm
Photometrics
Transmittance 0 to 199.9%
Absorbance -0.300 to 2.500A
Accuracy ±1%T, ±0.01Abs at 1.000 Absorbance
Resolution 0.1%T, 0.001A
Stray light <0.5% at 340nm <0.5% at 340nm and 220nm
Stability <0.002Abs/hr after 30 minute warm up <0.001Abs/hr without warm up
Concentration
Range -300 to 9999
Resolution Selectable 1/0.1/0.01/0.001
Calibration Blank with a single standard or factor
Units no units, %, ppm, EBC, SRM, mEq/l, mEq, M, mM, µM, nM, U, U/l, U/ml, g/l, mg/l,
µg/l, ng/l, g/dl, mg/dl, µg/dl, mg/ml, µg/ml, ng/ml, µg/µl, ng/µl, mol/l, mmol/l
Factor 0.001 to 10000
Standard 0.001 to 1000
Quantitation
Range -300 to 9999
Resolution Selectable 1/0.1/0.01/0.001
Calibration Blank with up to 6 standards
Units no units, %, ppm, EBC, SRM, mEq/l, mEq, M, mM, µM, nM, U, U/l, U/ml, g/l,
mg/l, µg/l, ng/l, g/dl, mg/dl, µg/dl, mg/ml, µg/ml, ng/ml, µg/µl, ng/µl, mol/l, mmol/l
Curve fit algorithms Quadratic, quadratic through zero, linear, linear through zero, interpolate
Kinetics
Measurement Time 2 to 9999 seconds
Calibration Blank with a single standard or factor
Display Concentration, rate of change, initial and final absorbance/%T
Resolution Selectable 1/0.1/0.01/0.001

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7310 7315
Spectrum
Range 320 to 1000nm 198 to 1000nm
Scan interval Selectable 1, 2 or 5nm
Analysis Absorbance or % transmittance and peak and valley wavelengths
Other
Beam height 15mm
Light source Tungsten halogen lamp Xenon lamp
Lamp save Yes Not applicable
GLP Current time and date, user ID, settings lock and method lock
Number of users 999
Methods memory 48 in each measurement mode
Results memory Limited by attached mass storage device
Removable media USB (supplied)
Outputs USB, Analogue, RS232, Internal printer
Power 24V
Size (w x d x h) 275 x 400 x 220mm
Weight 6kg

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SECTION 2 - Installation
2.1 UNPACKING
Remove the 7310 or 7315 from the packaging and ensure the following items are included:
1. Model 7310 spectrophotometer (731 001), or Model 7315 spectrophotometer (731 501)
2. 24V 65W power supply unit (021 060)
3. Pack of 100 disposable plastic visible wavelength cuvettes (060 084),
or pack of 100 disposable UV plastic cuvettes (060 230)
4. 2 GB USB memory stick (019 146)
5. Jenway 73 series PC software (735 100) and interface cable (013 203)
6. Instruction manual (731 005)
7. Jenway Foreign Manual CD (JENMANCD)
8. Optional accessories (as ordered)
2.2 INSTALLATION
Models 7310 and 7315 are supplied ready to use.
The unit should be placed on a clean flat surface which is free from drafts and vibrations. The units are
designed for operation on 90V to 264V AC input at 47 to 63Hz. Select the correct plug attachment and
attach to the power supply unit as shown below:
Fig 2.2.1 – Power supply unit with various plugs
Connect the power supply unit to the power inlet socket on the rear panel of the instrument and
connect to the mains socket. Turn the power on at the mains and switch the instrument on using the
power switch on the rear of the instrument.
The instrument will perform several power on tests before displaying the main menu:

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Fig 2.2.2 – All Power On Tests Complete
1. Instrument check – ensures the validity of the saved parameters
2. Dark test
3. Checks for the accessory fitted. If an active accessory is found the instrument verifies communication
and response
4. Self calibration of wavelengths
5. Checks communication between USB memory stick port and the instrument
2.3 DISPLAY
These spectrophotometers have a dot matrix display which enables icons and graphs to be displayed
clearly. Following successful completion of the power on tests the main menu screen will be displayed:
Fig. 2.3.1 – Display
1. Spectrum measurement mode
2. Photometrics measurement mode
3. Back key
4. Time and date menu
5. Quantitation measurement mode
6. Instrument settings menu
7. Concentration measurement mode
8. Kinetics measurement mode
7310
09:02
7310
09:02
2
1 3
4
1
2
3
8
7
4 5
5
6

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2.4 CONTROLS
The keypad used for these models enables an easy and effective way of navigating the different
measurement modes, entering numbers, saving and analysing results. The soft keys are active when an
icon is displayed above or adjacent to the key. The only exception to this is the back key which is always
active.
The main menu screen and surrounding keypad is displayed below.
Fig. 2.4.1 – Display
1. Spectrum measurement mode
2. Photometrics measurement mode
3. Back key
4. Time and date menu
5. Quantitation measurement mode
6. Instrument settings menu
7. Concentration measurement mode
8. Kinetics measurement mode
7310
09:02
1
1
2
2
3
8
8
7
7
4 5 5 5 6

2.5 REAR PANEL
The image below shows the rear panel on the instrument:
Fig. 2.5.1 – Rear Panel
1. Lamp access panel A l l o w s a c c e s s t o l a m p w h e n re p l a c e m e n t i s n e c e s s a r y
2. Power switch On/off switch for the unit
3. Power in socket Connection socket for power supply unit
4. RS232 serial port Connection to a PC or external serial printer
5. Output sockets Analogue output
2.6 FRONT PANEL
The image below shows the front panel of the instrument:
Fig. 2.6.1 – Front Panel
1. Integral printer (optional accessory)
2. Keypad
3. USB memory stick slot
4. Instrument lid
5. Display
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2
1
2
3
3
4
51
5
4

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SECTION 3 – Theory and Practice of Spectroscopy Measurements
3.1 THEORY OF SPECTROSCOPY MEASUREMENT
UV-visible spectroscopy is the measurement of the absorbance of light at a specific wavelength in a
sample. This is used to identify the presence and concentration of molecular entities within the sample.
The Beer-Lambert law is used to relate the absorption of light to the properties of the sample through
which the light is travelling through. The Beer-Lambert law states that:
A is the absorbance
is the molar absorption coefficient (l mol-1cm-1)
c is the concentration (mol l-1)
l is the path length (cm)
This law shows that absorbance is linear to concentration but this is only true for low concentrations. For
absorbance levels above 3 the concentration starts to move away from the linear relationship.
Transmittance is the proportion of the light which passes through the sample:
Therefore: T = It
Io
Absorbance is inversely related to transmittance:
A = log 1
T
3.2 SPECTROSCOPY MEASUREMENT
There are four main components of a spectrophotometer. These are a light source to emit a high and
constant amount of energy over the full wavelength range; a method for separating the light into
discreet wavelengths; a sample holder and a light detector.
Where:
Lo is the incident light
lt is the transmitted light
l is the path length
l
Io I
t
l

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The optical layout of the 7310 and 7315 spectrophotometers is shown below:
Figure 3.2.1 – Diagram of light path
The light from the pre-focused tungsten halogen (7310) or pre-aligned xenon (7315) lamp is focused
onto the grating, with 1200 lines per millimeter, which separates the light into discreet wavelengths.
The diffracted spectrum of light then passes through a further slit and lens arrangement before passing
through the sample in the sample chamber from left to right. The light which is not absorbed by the
sample is transmitted through a collecting lens and onto the signal detector. The photo-diode detector
used is mounted directly onto the detector PCB and the output is used to calculate the % transmittance.
The result is displayed either as % transmittance or absorbance on the instrument display.
3.3 GOOD PRACTICE GUIDELINES
1. For optimum performance all spectrophotometers should be sited in a clean, dry, dust free atmosphere.
When in use ambient temperature and light levels should remain as constant as possible.
2. If required adherence to Standard Operating Procedures (SOP) and Good Laboratory Practice (GLP)
should be monitored with regular calibration checks and a suitable Quality Control (QC) programme.
3. The sample chamber lid must be fully closed during measurement and before any readings are
recorded or printed.
4. The correct selection of sample containers is imperative for accurate and reproducible results:
a) Check that the material of the sample container is compatible with the wavelengths to be used
for measurement. In general glass can only be used down to 360nm or 320nm depending on quality.
Standard plastic cuvettes can be used down to 320nm. Special UV versions can be used down to
260nm. Below this level quartz cuvettes must be used.
b) Plastic disposable cuvettes should only be used ONCE.
c) Glass cuvettes should be thoroughly cleaned after use. Discard when scratches become evident on
optical surfaces.
d) Care should be taken when selecting semi-micro or micro cuvettes. The cuvette window on the
Entrance slit
Grating
Collimator mirror
Exit Slit
Detector
Collecting Lens
Sample
Lamp

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inner chamber (the area filled with sample) must be wider than the aperture in the sample holder or
light will reach the detector without passing through the sample. In this case, semi-micro or micro
cuvettes with self-screening black surrounds must be used or, alternative holders for these cuvettes
should be used.
e) Glass test tubes and other sample tubes should be used with care. Where possible, matched tubes
should be used and any index mark set to the correct position before measurements are made.
f) Ensure any sample containers used are compatible with the constituents of both the samples and
standards they are to hold. Plastic cuvettes are not compatible with organic solvents.
g) All sample containers must be handled with care; by the top, bottom and non-optical surfaces only.
Any finger marks evident must be removed by a suitable cleaning process.
h) Flow-through cuvettes must be selected with care and consideration for the sample type, sample
volume, pumping system, rinse, sample and waste handling to be used.
5. Samples and standards should not be stored in open cuvettes or sample containers as evaporation will
change the value and lead to staining of the walls which may be irreversible. If stored in stoppered and
sealed cuvettes, they should be filled with little or no air space and the values regularly checked against
a reference standard or quality control material.
6. Samples should be allowed to equilibrate to ambient temperature before measurement (unless a
suitable temperature controlled sample holder is in use). Temperature change during measurement may
cause air bubbles to form on the walls of the sample holder. This is a common cause of drift during
measurement.
7. In the preparation of samples and standards high grade borosilicate glass and AR grade chemicals
and reagents must be used. Good quality deionised water or other suitable solvents must be used for
dissolving or diluting samples, chemicals and reagents.
8. All measurements require calibration to a blank, for maximum accuracy this should be prepared
with care using the same deionised water or solvent used for dissolving or diluting the sample. Where
reagents are added to the sample to produce a colour proportional to its concentration a ‘sample based’
blank should be used. In this case the blank should consist of all reagents or chemicals to be used,
except the sample which will produce the colour to be measured.
9. Deviations from the Beer-Lambert Law may occur at high and low concentrations giving non-linear
response during sample concentration measurements. For all new methods a linear range should be
defined by the preparation of a calibration curve. The quantitation mode may be used to construct such
a curve against which sample results are automatically measured.
10. Cuvettes and sample holders must be filled to a minimum level which covers the light path. All
Jenway spectrophotometers have a beam height of 15mm.
11. The instrument must be calibrated to zero absorbance/100% transmittance prior to taking readings.
In the spectrum measurement mode a baseline scan must be performed before performing a sample
scan.

0.000
100.0
400
09:02
ABS
%T
nm
SECTION 4 – Instrument Setup
4.1 NAVIGATING AND SCREEN SETUP
The main menu screen is displayed below.
Fig 4.1.1 – Home Screen
To navigate around the spectrophotometer screen press the soft keys adjacent to icons displayed on the
screen. In the main menu either of the two soft keys adjacent to the measurement mode icon can be
pressed to access the mode. There is a back key which returns to the previous menu without saving any
changes.
The main menu screen provides access to all five measurement modes, the time and date menu and
the instrument settings menu. The measurement modes are spectrum, photometrics, quantitation,
concentration and kinetics. The instrument settings menu enables access to settings lock, security codes,
method lock, mode selection, user ID, screen contrast and lamp save menus.
All of the measurement modes open initially into a
minimal operating menu. This menu allows calibration
and simple readings to be taken without changing any
measurement parameters. Pressing the key adjacent to
the JW icon opens the expanded operating menu.
This menu enables changes to measurement parameters
and settings to be made. Depending on the mode, the
measurement parameters can be accessed through the
settings menu which is displayed in the top right hand
corner of the screen. The only mode where this function
is not available is the photometrics mode; instead a
toggle icon is displayed which is used to change the
primary and secondary displays.
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7310
09:02
Kinetics
measurement
mode
Concentration
measurement
mode
Instrument
settings menu
Spectrum
measurement
mode
Photometrics
measurement
mode
Back key Quantitation measurement modeTime and date menu
0.000
100.0
400
09:02
ABS
%T
nm
Minimal Operating Menu
Expanded Operating Menu
(Photometrics measurement mode)

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The measurement settings can be accessed through the utility toolbar displayed on the left hand side
of the expanded operating menu. This toolbar provides the same functions in all of the measurement
modes. The utility toolbar enables access to printing, print setup options, opening, saving and deleting
results and methods and autologging options. For more details on the different functions of the utility
toolbar refer to section 10.
4.2 TIME AND DATE
The time and date menu enables the current time and
date to be set. This information will be saved on all results
and displayed on printouts. The time and date menu can
be accessed from the main menu by holding the key
below the time and date icon for 2 seconds. Pressing
the key once cycles the display between time and date.
In the time and date menu to set the time press the key
adjacent to the clock icon. Select the digit to be changed
using the keys at the bottom of the screen. Use the keys
adjacent to the arrow icons to increase or decrease the
number. The clock function uses a 24 hour format.
In the time and date menu to set the date press the
key adjacent to the calendar icon. Select the digit to
be changed using the keys at the bottom of the screen.
Use the keys adjacent to the arrow icons to increase or
decrease the number. The date format can be displayed
as either European dd/mm/yy or American mm/dd/yy. To
change between the two formats press the key below the
toggle icon. Once the current time and date have been
set press the key adjacent to the tick icon to save the
changes. To exit this menu without saving any changes
press the back key and the screen will return to the main
menu.
4.3 INSTRUMENT SETTINGS MENU
The instrument settings menu is accessed by pressing the key below the instrument settings icon in
the main menu. This menu enables access to settings lock, security code, method lock, mode selection,
diagnostics, user ID, screen contrast and lamp save menus. The tick icon saves any changes made and
returns to the main menu.
Fig 4.3.1 - Settings Menu
7310
09:02
14 5 3:
30 11 09
Tick icon
Settings lock
Security code
Method lock
Mode selection
Diagnostics
User ID
Screen
contrast
Lamp save

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4.4 SECURITY AND SETTING PASSWORDS
4.4.1 Setting Security Codes
The security code function enables a security code to
be set to lock the instrument settings and measurement
mode settings. The security code is not specific to the
user ID but is designed to enable an administrator to
control either the instrument or protocols. The security
code menu is accessed through the instrument settings
menu.
In the instrument settings menu press the key adjacent
to the security code icon. Using the keys at the bottom
of the screen select the digit to be changed. Use the keys
adjacent to the arrow icons to increase or decrease the
selected number. Once the preferred code has been set
press the key adjacent to the tick icon to save the security
code.
4.4.2 Settings lock
The settings lock function enables the instrument and measurement mode settings to be locked to
prevent any changes to the measurement parameters or instrument settings. The only exceptions to this
are that the user ID and contrast can be changed when the settings lock is active.
The settings lock function is accessed through the
instrument settings menu by pressing the key adjacent to
the open padlock icon. One press will lock the settings
instantly. To unlock the settings press the key again. This
will open the security code menu as detailed in section
4.4.1. The previously set security code must be entered
to unlock the settings. When the settings lock is active
methods can still be opened, deleted and saved but the
method parameters cannot be changed.
To enter the security code use the keys at the bottom
of the screen to select the digit to be changed. Use the
keys adjacent to the arrow icons to increase or decrease
the selected number. Once the correct security code has
been entered press the key adjacent to the tick icon. The
settings are now unlocked.
If the settings are locked before the security code has
been set a default code of 660 will unlock the settings.
4.4.3 Method Lock
When the method lock is active the method selection
menu is disabled in all the measurement modes therefore
methods cannot be opened, deleted or saved. However
the measurement parameters of the currently loaded
method can be changed. The method lock function
is accessed through the instrument settings menu by
pressing the key adjacent to the method lock icon.
660
000

22
One press will lock the methods instantly. To unlock the methods press the key adjacent to the method
lock icon again. The methods are now unlocked. If the settings lock is active this must be disabled before
the method lock can be activated or deactivated.
In all the measurement modes if a user tries to save changes to a method when the method lock is active
the padlock icon flashes on the screen and changes cannot be saved.
4.5 MODE SELECTION
The mode selection function enables access to the various
measurement modes to be restricted. The required modes
can be selected and the settings lock activated to prevent
other users from accessing the deactivated modes. The
mode selection function can be accessed through the
instrument settings menu by pressing the key adjacent
to the mode selection icon.
The measurement mode icons which are displayed on the
main menu are identified with a mode shown icon. The
mode icons which are not displayed on the main menu
are identified with a mode not shown icon.
To change a mode from displayed to restricted or vice
versa press the key adjacent to the measurement mode
icon. Once the required modes have been selected press
the key adjacent to the tick icon to save the changes.
The selected measurement modes will be displayed on
the main menu.
4.6 DIAGNOSTICS
The diagnostic function allows simple checks to be
carried out on the instrument. The wavelength can
be changed, the lamp can be turned on and off and a
sensitivity reading can be performed.
To exit this function without performing any checks press
the back key.
4.7 GLP SETTINGS
In addition to the time and date settings this instrument also has a user ID function. This function
enables an individual three digit ID number to be set. This will be displayed on all printouts and saved
results.
7315
09:02
0.00
500.0 nm
READON
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