Fisher Scientific accumet XL150accumet XL200accumet XL250accumet XL500accumet... User manual

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Reference Guide
Fisher Scientific
accumet®Excel (XL)
Benchtop Meters
XL150 ●XL200 ●XL250 ●XL500 ●XL600
68X623601 Rev 0 October2012

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Table of Contents
1. INTRODUCTION............................................................................................................................................. 4
2. TOUCH SCREEN & ICONS ............................................................................................................................... 5
3. CONNECTIONS .............................................................................................................................................. 8
4. ELECTRODE BRACKET & ARM ASSEMBLY....................................................................................................... 9
5. POWER ON/OFF .......................................................................................................................................... 10
6. SYSTEM SETUP ............................................................................................................................................ 11
7. ADMINISTRATION & USER ID ...................................................................................................................... 12
8. PARAMETER SETUP: SAMPLE ID .................................................................................................................. 14
9. PARAMETER SETUP: AUTO READ MODE ..................................................................................................... 15
10. PARAMETER SETUP: STABILITY CRITERIA / STABLE INDICATOR................................................................... 16
11. PARAMETER SETUP: DEFAULT TEMPERATURE ............................................................................................ 17
12. PARAMETER SETUP: ISOPOTENTIAL POINT ................................................................................................. 18
13. PARAMETER SETUP: ALARM LIMITS ............................................................................................................ 19
14. PARAMETER SETUP: PRINT CRITERIA .......................................................................................................... 20
15. PARAMETER SETUP: DATA STORAGE CRITERIA ........................................................................................... 21
16. PARAMETER SETUP: DISPLAY CRITERIA....................................................................................................... 22
17. VIEWING & EXPORTING STORED DATA (LOG VIEW) .................................................................................... 23
18. GRAPHING .................................................................................................................................................. 24
19. STANDARDIZATION..................................................................................................................................... 25
20. TEMPERATURE OPERATION ........................................................................................................................ 26
21. PH OPERATION............................................................................................................................................ 27
22. MILLIVOLT OPERATION ............................................................................................................................... 29
23. ION: SETUP & OPERATION .......................................................................................................................... 30
24. ION: DIRECT READING METHODS ................................................................................................................ 32
25. ION: INCREMENTAL METHODS.................................................................................................................... 34
26. ION: KNOWN ADDITION METHOD .............................................................................................................. 35
27. ION: KNOWN SUBTRACTION METHOD........................................................................................................ 36
28. ION: ANALATE ADDITION METHOD............................................................................................................. 37
29. ION: ANALATE SUBTRACTION METHOD ...................................................................................................... 38
30. CONDUCTIVITY / RESISTIVITY OPERATION .................................................................................................. 39
31. TDS OPERATION .......................................................................................................................................... 41
32. SALINITY OPERATION .................................................................................................................................. 42
33. DISSOLVED OXYGEN OPERATION ................................................................................................................ 43
34. BOD OPERATION......................................................................................................................................... 48

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35. OUR OPERATION......................................................................................................................................... 49
36. SOUR OPERATION ....................................................................................................................................... 50
37. FIRMWARE UPGRADE ................................................................................................................................. 51
38. SPECIFICATIONS .......................................................................................................................................... 54
39. REPLACEMENTS & ACCESSORIES ................................................................................................................. 57
40. WARRANTY ................................................................................................................................................. 59
41. RETURN OF ITEMS....................................................................................................................................... 60
42. NOTICE OF COMPLIANCE............................................................................................................................. 61
43. DECLARATION OF CONFORMITY ................................................................................................................. 62

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1. INTRODUCTION
Thank you for selecting the Fisher Scientific accumet XL benchtop meter.
All models include an electrode arm with metal bracket (13-637-671), 110/220 universal power supply
(13-636-104), RS-232, and USB cable. The electrode arm can be attached to the left, right, or center of
the meter according to your preference using a Phillips screwdriver. If the instrument will be wall
mounted - the electrode arm should be removed from the bracket.
13-637-671 13-636-104
Please note that this manual serves five models, so not all sections of the manual are relevant to each
model. The chart below lists the parameters served for the various models:
Intended Use:
Fisher Scientific accumet XL150, XL200, XL250, XL500, and XL600 models are designed for
measurement and monitoring of water-based, electrochemical parameters using replaceable sensors.
Designated use of these instruments is exclusively for measurement in indoor, laboratory environments.
Any use above and beyond this is considered non-intended use.

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2. TOUCH SCREEN & ICONS
The Fisher Scientific accumet XL150 / XL200 / XL250 / XL500 / XL600 series benchtop meters operate
with a high performance TFT color touch screen. The touch screen can be controlled by a finger or an
optional USB mouse. Avoid damage to the display by preventing contact from aggressive chemicals,
solvents, hot liquids, and all sharp or pointed objects such as a screwdriver which can damage the screen.
A stylus is suitable for normal use if desirable.
The buttons on the right side of the screen control all of the functions of the meter. A light touch on the
screen is all that you need to access the various functions. If the beep function is enabled, you will get an
audible tone with each press on the touch screen. Note: the screen will not change until you lift your
finger. This design prevents rapid uncontrolled scrolling through the various function screens.
Function buttons and options change from screen to screen. Easy to understand prompts guide you
through the operation of the meter in the selected mode. For additional details on the particular screen
you are viewing, select “Help” located on the bottom right corner of the display.
Your meter was shipped with a clear protective sheet to protect the LCD display and “bubbles” may
appear on the screen. The screen will respond better and visibility will improve if it is removed.
Alternatively, you may choose to leave this on for added protection.
Maintenance And Precautions:
For routine maintenance disconnect the power cord, then dust or wipe the display using a damp cloth. If
necessary, warm water or a mild water based detergent can be used. Maintenance can be performed as
required by the environment in which the meter is operated. Immediately remove any spilled substance
from contact with the meter using the proper cleaning procedure for the type of spill.
•Do not use this equipment in potentially explosive atmospheres.
•Refer to the electrode instructions for use, storage, and cleaning.
•Ensure that no liquid enters the instrument.
•Do not use any aggressive cleaning agents (solvents or similar agents).
•The instruments do not have user serviceable parts inside.
Attempts to service internal parts may void the warranty.
Here Is A List Of Various Icons And A Summary As To The Function Of Each:
Administration:Use to create and edit user login ID profiles, Passwords, and User Groups.
System Setup:Use to configure and view system settings. These include stirrer speed, printer, touch screen
calibration, date & time and brightness settings.

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About: Provides information about the instrument such as software version and serial number.
Single Channel: Use to display one measurement mode. Note: Single Channel is required to access the
Standardization mode, Printing function, and On-screen graphing.
Multi Channel: Use to display measurement mode of multiple channels simultaneously. Not available with
XL150.
Display Setup: Use to configure the display options and select input parameters.
User: Select to view the current user profile, company name, and user group, or Log Off as the current user.
Refer to Administration icon to create or edit user login IDprofiles, passwords, and user groups.
Standardize: Use to standardize (calibrate) the desired parameter. Note: Available from single-channel
measurement display only and not used for mV / relative mV offset adjustment.
Measure: Use to resume live measurement after “Auto Read” function has been activated and the
measurement is frozen. Note: not available with mV, BOD, OUR, or SOUR display.
Mode: Use to change operation modes. Also use to gain access to Administration, System Setup, About, and
Internet Explorer icons.
Setup: Use to customize changes to measurement parameter.
Print: Use to print data manually from measurement mode. If you selected the “LOGDATA” option in the
“Print Criteria” setup, clicking on the Print icon from the measurement mode will send data to the printer:
Available from single-channel measurement display only.
Log Data: Use to save the current measurement data manually to memory. Sample ID entry is required
before data can be saved (this is available from Setup).
Log View: View saved data in memory on the display.
Standardization View: View details regarding standardization (calibration) data on the display.

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Stirrer A: Provides On/Off control of optional stirring probe (13-620-BSP) that is connected to Stirrer port A
located in rear of unit.
Stirrer B: Provides On/Off control of optional stirring probe (13-620-BSP) connected to Stirrer port B located
on the left hand side of unit.
IExplorer: Internet Explorer mobile browser for use with RJ45 port. RJ45 cable is not provided.
Note: sound and video are not enabled during browsing.
Help: Provides helpful text relevant to the display available from various screens.
Use Confirm to accept the standard value during standardization (calibration).
Use Clear to erase all of the previous standardization values for the selected parameter.
Use Cancel to abort the standardization and return to measurement without accepting the standard value.
Use to standardize (calibrate) the temperature value associated with the selected parameter.
Note: XL250, XL500,& XL600 offer multiple temperature ports that correspond to the respective BNC ports.

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3. CONNECTIONS
Prior to attaching pH, ORP, or Ion
electrodes, the BNC shorting cap
(13-620-99) should be removed.
Do not discard the shorting cap. This cap
is useful for simulating a 0 mV signal and
also as a protective covering when the
BNC connection is not in use. A strap will
retain the cap in place when an electrode
is connected.

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4. ELECTRODE BRACKET & ARM ASSEMBLY
Connect the metal electrode bracket to
the base of the meter using a Phillips
screwdriver. The bracket may be attached
to the left, right, or center according to
your preference.
If the instrument will be wall
mounted using the wall mount holes,
the electrode arm should be removed from
the bracket.
Attach the electrode arm to the
bracket & tighten the wing nut.
Purchase an additional arm/bracket
(13-637-671) to utilize two arms in left
& right positions simultaneously.

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5. POWER ON/OFF
ON: To power on the unit, press the on/off key found on the lower right hand side of the
instrument for three seconds:
As the instrument boots up, the meter will go thru a series of self-checks and display the model and the
current software revision. After login window, the instrument will continue to measurement mode that was
used previously. (See Section 7- Administration and User ID
to create additional User ID’s).
OFF: Please power off the unit when not in use to conserve energy. To power off the unit,
press the on/off key for three seconds. A pop-up window will appear; “Are you sure you want
to shutdown”. Press “OK” to power off the instrument or “Cancel” if you do not wish to power off
the instrument.

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Tip: Check www.fishersci.com/accumet for free instrument software updates.
6. SYSTEM SETUP
Use the System Setup to customize operation of your
XL series meter.
To access System Setup, select MODE from any
measurement screen, then select the “Sys.
Setup” icon.
The following settings can be customized for each model:
•Optional 13-620-BSP Stirrer A /Stirrer B Speed
(1 = slowest to 5 = fastest).
•Brightness
•Printer Option
•RS-232 Print Format
•Beep Status: (Enable or disable a short audible
tone with each selection).
•Network Printer
•Language Selection: (Select the preferred
language that is displayed on the instrument).
•Set Date and Time
•Std. Due Setting: (Set an optional reminder to alert you if a specified period of time has elapsed since
the last standardization has been performed).
•Display Color Setting: (Change the appearance of the display).

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7. ADMINISTRATION & USER ID
Up to (10) unique User ID’s can be created. Alternatively, the factory default User ID login “Default”
with no password protection can be used. Creation of a User ID is optional but can offer several
advantages including:
•Security: Password protection for each User ID.
•Separation: Keep stored data, settings, & standardization together.
•Detailed Data: Saved and printed includes the unique User ID setting.
•Reduce Setup and Standardization: Instead of using “Default”, create a department or application
specific User ID, such as “LAB”, “QC”, “pH”, or “Test 123”. This will save significant setup time and also
eliminate the need for new standardizations with each parameter change.
The User Login dialog box automatically appears upon instrument start up. A User ID that has been
added will show up in the drop down menu. When using Default as the User ID, a password is not
required. The instrument will continue to the measurement mode upon a successful login.
Select the User icon to view the current user profile, company name, and user group, or Log
Off as the current user.
Administration Setup / Adding User Profiles:
1. From any measurement screen. Select “Mode” and
then select the “Admin” icon.
2. Select the User ID text box and the alphanumeric
keypad will appear. When entering the User Profiles
setups for the first time, enter User ID = “admin” and
Password = “Admin”. Note: the password is case
sensitive – use an uppercase Ain “Admin”.
3. Update the Password and Company Name information
by tapping in the appropriate boxes, if you are logged in
as a user.
4. After logging in under User ID "admin" the User Detail
fields will show information for "Admin". Select “Add”
to enter a new User ID. You can now begin entering
information for new users.

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5. Use the alphanumeric keypad to key in the new User ID. The User ID cannot exceed 10 characters.
Press Enter to confirm.
6. Use the alphanumeric keypad to key in the Password. The password cannot exceed 12 characters.
Press Enter to confirm.
7. Use the alphanumeric keypad to key in the Confirm Password field. Press Enter to confirm.
8. Use the alphanumeric keypad to key in the Company Name. Select OK when all changes have
been made.
9. Select Add. A window will show "Are you sure, you want to add this user?" Select Yes or No.
Select Yes to add the new user. Select No to continue editing the current user.
10.Upon successful addition of a new user ID, the instrument will show “User has been added
successfully”. Select “OK”.
11.Select Exit when finished. A message “User profile saved. Meter will reboot now” will appear.
Select “OK”. The instrument will restart and the newly created User ID(s) will be available.
Function Keys From User Profiles Screen:
•Add: To add a new User ID.
•Delete: To delete the user ID.
•Modify: Modify the current user details.
•Exit: To exit User Profile Screen. Reboot is automatic after adding new User ID or making changes
to an existing user.
•Apply To Current User:To apply Default Setting or Delete User Data function buttons to current
user only.
•Apply To All User:To apply Default Setting or Delete User Data function buttons to all users.
•Default Setting:To reset current or all users to factory default setting of meter.
•Delete User Data:To delete all measurement data for current or all users.

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8. PARAMETER SETUP: SAMPLE ID
A Sample ID is required to log data or activate a timed printing. When Log Data is selected from the
measurement screen, the Sample ID will be associated with the measured value along and other
measurement details.
The Sample ID can be accessed by selecting Setup from the Measurement screen of any parameter.
Manual:
Use up to 10 alphanumeric characters for identification. When using timed printing, the identical Sample
ID will be used for all data collection.
Sequence:
Use up to 10 numbers for identification. When using timed printing or logging data manually, the Sample
ID is automatically increased by 1. Choose Sequence instead of Manual if unique Sample IDs
are desired.
None:
Select None to deactivate the sample ID assignment.

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Tip: Take caution when using AUTO; if accidentally selected, it may seem like the
electrode or meter is un-responsive when in fact the measurement is locked and
selecting “Measure” screen is the only way to get the current reading to re-appear.
9. PARAMETER SETUP: AUTO READ MODE
The Auto Read option is available from any parameter Setup. Manual is most typical and the
recommended setting. It is also the factory default setting. Auto Read mode setting is effective only in
Single Channel display.
Auto:
When the Auto Read function is set to AUTO, the meter will freeze the measurement as soon as the
STABLE indicator appears. Once locked, the reading will not change until Measure is selected.
Manual:
When the Auto Read function is set to MANUAL, the STABLE indicator will appear, however the live
measurement will continue to update on the display. The measurement does not freeze. The “Measure”
icon is not active during Manual setting.
Note: For ISE, if the Ion method is Known Addition, Known Subraction, Analate Addition, and Analate
Subtraction then the Auto Read functionality is inactive. The measure button in the measure button in the
Measurement screen will be replaced with Respective Ion method symbol-either; KA, KS, AA or AS.

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Tip: Select a lower pH resolution such as X.XX instead of
X.XXX to decrease stabilization time.
10. PARAMETER SETUP: STABILITY CRITERIA / STABLE INDICATOR
Various Stability Criteria and Stable Indicator options can be accessed from the parameter Setup:
pH: Fast / Medium / Slow
mV: None
ISE: Fast / Medium / Slow / OFF, Stable ON/OFF
Conductivity/Resistivity/TDS/Salinity: Stable ON/OFF
Adjust how quickly and frequently the STABLE indicator appears. To display STABLE more quickly and
more often, select FAST. MEDIUM or SLOW is recommended for most applications.
FAST: The STABLE indicator will appear quickest of any setting. If you find that the indicator appears
and disappears too frequently, try a slower setting. This setting is often not suitable for use with most
non-refillable (gel filled) electrodes which are generally slower to respond.
MEDIUM: This is the factory default setting. It provides a balanced response which works best for
most applications.
SLOW: The STABLE indicator will take longer to appear and will appear less frequently. Use this setting if
you require high precision and don’t mind waiting longer to achieve this.
ON:The STABLE indicator will appear.
OFF: The STABLE indicator will not appear.

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Tip: Using an ATC probe will override any value entered
in the default temperature screen.
The measured temperature will be used by the meter to determine the pH reading.
11. PARAMETER SETUP: DEFAULT TEMPERATURE
To eliminate temperature errors associated with the pH electrode, attach an automatic temperature
compensation (ATC) probe for best accuracy. Without temperature compensation, pH accuracy will
decrease as samples deviate from 25 ºC and pH 7. The factory default setting is 25 °C / 77 °F.
If you are not using an ATC probe or the ATC is removed from the meter, the default temperature will be
used instead. The default temperature range is -10 °C to 110 °C.
If you are measuring the pH of a solution that is not 25 °C and you are not using an Automatic
Temperature Compensation (ATC) probe, enter the temperature value of the solution for best results.
The manual temperature compensation (MTC) value will be visible on the screen. The default temperature
can be set from -5 °C to 105 °C.
To Set Default Temperature:
1. Select temperature units by touching the appropriate unit button: C(Celsius), F (Fahrenheit) or
K(Kelvin).
2. Touch the Default Temperature box and use the numeric keypad to enter the desired default
temperature (-5 °C to 105 °C).
3. Press Enter in the keypad to return to pH (pH FET) Setup screen.

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12. PARAMETER SETUP: ISOPOTENTIAL POINT
The isopotential point is the millivolt reading for an electrode at which temperature has no effect on the
measurement. Electrodes for pH measurement are constructed so that the isopotential point is
theoretically zero millivolts. Most pH electrodes do not achieve this value precisely. However they are
close enough so that it is not usually necessary to use an isopotential point other than zero. The true
isopotential point of any given electrode must be determined experimentally. The isopotential point can
be set from -100 to +100.
To Set Isopotential Point:
1. Touch the Isopotential Point box and use the numeric keypad to enter the desired mV setting for the
new isopotential point.
2. Touch Enter to accept this value and return to pH (pH FET) Setup screen.
Apply Temperature Compensation (Ion Setup Only):
Ion concentration is a temperature dependent measurement. Best results are obtained when the
standards and the samples are standardized at the same temperature. However, if you have
experimentally determined the isopotential point of your ion selective electrode, you can choose to Apply
ATC by entering the Isopotential Point.
The Default value is NO which is satisfactory for most applications.
The Isopotential point is the millivolt reading of an electrode at which temperature has no effect on the
measurement. Unlike pH electrodes, Ion selective electrodes are not designed to achieve any particular
isopotential point. If samples and standards are at different temperatures when performing ISE
experiments, it will be necessary to experimentally determine the isopotential point of your own Ion
Specific Electrode.
The Isopotential range is -100 mV to +100 mV.

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13. PARAMETER SETUP: ALARM LIMITS
The High and Low Alarm Limits are available from any parameter Setup.
Select an Alarm Limit to enable a visual and audible alarm to alert you whenever a High or Low value is
exceeded. When a measurement exceeds the Alarm limit, a corresponding “HI ALARM” or “LOW
ALARM” will blink on the display while simultaneously producing a loud, intermittent beep
. The alarm
will continue until the conditions are no longer met, and will only be active during measurement mode.
To Set An Alarm Limit:
1. Select ON to enable the Alarm Limits, or OFF to disable the
Alarm Limits.
2. Select the Low window to enter or modify the Low limit
value using the keypad.
3. Select the High window to enter or modify the High limit value using the keypad.
Tip: If you want to use High or Low Alarm only and not both, choose the minimum (Low) or maximum
(High) value. For example, if you want the alarm to notify you when the pH reading goes above 12, but
don’t want any other alarm to be active, turn Alarm Limits ON and enter -2.00 as the Low value, and 12.00
as the High value.

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14. PARAMETER SETUP: PRINT CRITERIA
The Print Criteria setting is available from any parameter Setup. Use this option to select which criteria are
printed along with the measurement when you print the data.
To Set Print Criteria:
1. Select Touch here to edit next to Print Criteria.
2. Select ON or OFF for each detail.
3. For Print Interval select Log Data or Timed. If Log Data is selected, clicking on the “Print” button
from the Measurement screen will send the data to the printer. If Timed is selected, you can print data
at a pre-determined interval. This data is buffered and sent to the printer when the page is full.
4. Select OK to accept your selections.