Nonin PalmSAT 2500A VET User manual

Operator’s Manual
PalmSAT®
Model 2500A VET
Veterinary Pulse Oximeter
with Alarms
English

Nonin®reserves the right to make changes and improvements to this manual and the products it
describes at any time, without notice or obligation.
Nonin Medical, Inc.
13700 1st Avenue North
Plymouth, Minnesota 55441, USA
[phone]
[phone] (USA and Canada)
Fax [phone]
E-mail: [email protected]
Nonin Medical B.V.
Prins Hendriklaan 26
1075 BD Amsterdam, Netherlands
+31 (0)13 - 79 99 040 (Europe)
Fax: +31 (0)13 - 79 99 042
E-mail: [email protected]
nonin.com
MPS, Medical Product Service GmbH
Borngasse 20
D-35619 Braunfels, Germany
References to “Nonin” in this manual shall imply Nonin Medical, Inc.
Nonin and PalmSAT are registered trademarks or trademarks of Nonin Medical, Inc.
Microsoft®and Windows®are registered trademarks of Microsoft Corporation.
© 2016 Nonin Medical, Inc.
7678-001-06
Follow Instructions for Use.
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i
Contents
Indications for Use ........................................................................................ 1
Warnings ................................................................................................................ 1
Cautions ................................................................................................................. 2
Guide to Symbols .......................................................................................... 4
Displays, Indicators, and Controls............................................................... 6
Displays .................................................................................................................. 6
SpO2Display ...................................................................................................... 6
Pulse Rate Display.............................................................................................. 6
Indicators ................................................................................................................ 7
Pulse Quality LED Indicator ................................................................................ 7
Low Battery LED Indicator .................................................................................. 7
Alarm Silence LED Indicator ............................................................................... 7
Alarm Bar LED Indicator ..................................................................................... 7
Audible Indicators ............................................................................................... 7
Controls .................................................................................................................. 8
On/Off Button ...................................................................................................... 8
Advance Button................................................................................................... 8
Introduction.................................................................................................... 9
Unpacking the Model 2500A VET .......................................................................... 9
Batteries ............................................................................................................... 10
Low and Critically Low Battery.......................................................................... 10
Installing Batteries............................................................................................. 11
Important Notes about Battery Use................................................................... 12
Recharging Batteries (NiMH Battery Pack Only) .............................................. 12
Using the 2500A VET Pulse Oximeter........................................................ 13
Connecting the Sensor ......................................................................................... 13
Power On/Off........................................................................................................ 13
Power On Self-Test .............................................................................................. 13
Monitoring............................................................................................................. 14
Veterinary Sensors ........................................................................................... 14
Sensor Placement............................................................................................. 15
Detailed Operation....................................................................................... 17
Setup Mode .......................................................................................................... 17
Entering Setup Mode ........................................................................................ 17
Adjusting Settings in Setup Mode ..................................................................... 17
Alarm Settings ...................................................................................................... 19
Recalling Alarm Settings................................................................................... 20
Reviewing Alarm Settings ................................................................................. 20
Silencing Audible Alarms .................................................................................. 20
Clearing the Memory ............................................................................................ 21

ii
Contents (Continued)
Calendar and Clock Settings.................................................................................21
Care and Maintenance .................................................................................22
Alarms ...........................................................................................................23
High Priority Alarms ..............................................................................................23
Medium Priority Alarms .........................................................................................23
System Fault Alarms .............................................................................................24
Memory Functions .......................................................................................25
Data Collection......................................................................................................25
Memory Playback..................................................................................................25
Communications ..........................................................................................26
Serial Output .........................................................................................................26
Connecting the Device into a Medical System......................................................27
Service, Support, and Warranty..................................................................28
Service and Support..............................................................................................28
Warranty................................................................................................................28
Accessories ..................................................................................................30
Troubleshooting ...........................................................................................32
Technical Information ..................................................................................34
Manufacturer’s Declaration ...................................................................................34
Equipment Response Time...................................................................................37
Testing Summary ..................................................................................................38
SpO2Accuracy Testing .....................................................................................38
Pulse Rate Motion Testing.................................................................................38
Low Perfusion Testing .......................................................................................38
Principles of Operation..........................................................................................39
Specifications ........................................................................................................39

iii
Figures
Figure 1. Model 2500A VET - Front View................................................................... 6
Figure 2. Model 2500A VET - Rear View ................................................................. 11
Figure 3. Installing Batteries..................................................................................... 11
Figure 4. Connecting the Sensor.............................................................................. 13
Figure 5. Small Lingual Clip Placement ................................................................... 15

iv
Tables
Table 1. Symbols ....................................................................................................... 4
Table 2. Adjustable Parameters and Settings.......................................................... 17
Table 3. Alarm Limits and Volume Settings ............................................................. 19
Table 4. High Priority Alarms ................................................................................... 23
Table 5. Medium Priority Alarms.............................................................................. 24
Table 6. Pulse Oximeter Sensor Connector Pin Assignments................................. 26
Table 7. Electromagnetic Emissions........................................................................ 34
Table 8. Electromagnetic Immunity.......................................................................... 35
Table 9. Guidance and Manufacturer’s Declaration— Electromagnetic Immunity... 36
Table 10. Recommended Separation Distances ..................................................... 37

1
Indications for Use
Indications for Use
The Nonin Model 2500A VET PalmSAT®Veterinary Pulse Oximeter with Alarms is indicated for use
in measuring and displaying functional oxygen saturation of arterial hemoglobin (SpO2) and pulse
rate for animals. The device is intended for continuous monitoring and/or spot-checking of animals
during both motion and no-motion conditions, and for animals who are well or poorly perfused.
CONTRAINDICATION: Do not use in an explosive atmosphere or in the presence of flammable anesthetics or gasses.
Warnings
Do not use this device in an MR environment.
This device is not defibrillation proof per IEC 60601-1.
The Model 2500A VET is intended for VETERINARY USE ONLY.
This device is intended only as an adjunct in animal assessment. It must be used in conjunction with other methods of
assessing clinical signs and symptoms.
Inspect the sensor application site at least every 4 hours to ensure correct sensor alignment and tissue integrity. Animal
sensitivity to sensors and/or double-backed adhesive strips may vary due to medical status or skin condition.
Oximeter readings of this device may be affected by the use of an electrosurgical unit (ESU).
Do not use a damaged sensor. If the sensor is damaged in any way, discontinue use immediately and replace the
sensor.
Verify all alarm settings and limits during system startup to ensure that they are set as intended.
A hazard can exist if different presets are used on multiple 2500A VET monitors in one care area.
As with all medical equipment, carefully route cabling to reduce the possibility of animal entanglement, strangulation, or
injury.
This device should not be used adjacent to or stacked with other equipment. If adjacent or stacked use is necessary, the
device should be observed carefully to verify normal operation.
To prevent improper performance and/or injury to the animal, verify compatibility of the monitor, sensor(s), and
accessories before use.
No modifications to this device are allowed as it may affect device performance.
Discontinue use of adhesive tape strips if the animal exhibits an allergic reaction to the adhesive material.
Avoid excessive pressure to the sensor application site as this may cause damage to the skin beneath the sensor.
Because operating environments vary, use caution to ensure that all audible alarms and indicators can be heard. Users
must determine the acceptable audible distance of all alarms.
Do not place this device in an environment where its speaker opening may become blocked; alarms may become
muffled or inaudible.
Turning off the alarm volume creates a situation that is not compliant with relevant safety standards. The alarm silence
indicator is lit solid when the alarm volume is turned off or set below 45 dBA.
When a system fault occurs, the animal will no longer be monitored.
To comply with relevant product safety standards, ensure that all alarm volumes are set appropriately and are audible in
all situations. Do not cover or otherwise hinder any speaker openings.
The device turns off after approximately 10 minutes when at critically low battery capacity.

2
Indications for Use
In the event the sensor becomes dislodged from the animal, audible and visual alarms are activated, requiring that a
veterinary professional investigate the reason for the alarm status. The veterinary professional must investigate animal
status and sensor attachment after every sensor alarm indication. It is possible when the sensor is dislodged from the
animal (under certain conditions of light and vibration of the sensor) for the pulse oximeter to display normal
physiological values.
Verify all alarm settings and limits during system startup to ensure that they are set as intended.
Before changing the batteries, make sure the device is off and the sensor is not applied to the animal.
Cautions
Before use, carefully read the package insert provided with the sensors.
This device is not an apnea monitor.
Verify that all visible indicators illuminate and that an audible indicator sounds during the startup (initialization)
sequence. If any indicator is not lit or the audible indicator does not sound, do not use the device. Contact Nonin
Technical Service for assistance.
Review all limits to ensure they are appropriate for the animal.
Setting alarm limits to extremes can render the alarm system useless.
The presence of a defibrillator may interfere with the performance of this device.
This device may not work on all animals. If you are unable to achieve stable readings, discontinue use.
Inadequate perfusion, thick fur, foreign matter that blocks light, or an improperly applied sensor can result in erratic and
inaccurate oxygen saturation and/or pulse rate measurement. Follow the instructions outlined in “Monitoring.” If proper
operation cannot be verified, remove the sensor from the animal and DO NOT use the oximeter on the animal.
This device has motion tolerant software that minimizes the likelihood of motion artifact being misinterpreted as good
pulse quality. In some circumstances, however, the device may still interpret motion as good pulse quality. Minimize
animal motion as much as possible.
Do not place the Model 2500A VET in liquid or clean it with agents containing ammonium chloride, isopropyl alcohol, or
products that are not listed in this operator’s manual.
Do not autoclave or immerse the device or sensors in liquid. Do not expose the device or components to excessive
moisture or liquids.
Do not use caustic or abrasive cleaning agents on the device or the sensors.
The oximeter sensor might not work on cold extremities due to reduced circulation. Warm or rub the sensor site to
increase circulation, or reposition the sensor.
Sensor sites must be checked periodically to determine circulation, sensor positioning, and tissue sensitivity.
Replace the batteries as soon as possible after a low battery indication. Always replace the batteries with fully charged
batteries.
Use only Nonin-specified battery types with this device.
Do not use fully charged and partially charged batteries at the same time. This may cause the batteries to leak.
Do not remove any covers other than the battery cover when replacing batteries. There are no user-serviceable parts
inside other than the replaceable batteries.
Follow local, state, and national governing ordinances and recycling instructions regarding disposal or recycling of the
device and device components, including batteries.
Batteries may leak or explode if used or disposed of improperly.
Warnings (Continued)

3
Indications for Use
Remove the batteries if the device will be stored for more than 1 month.
This equipment complies with IEC 60601-1-2 for electromagnetic compatibility for medical electrical equipment and/or
systems. This standard is designed to provide reasonable protection against harmful interference in a typical medical
installation. However, because of the proliferation of radio-frequency transmitting equipment and other sources of electrical
noise in healthcare and other environments, it is possible that high levels of such interference due to close proximity or
strength of a source might disrupt the performance of this device. Medical electrical equipment needs special precautions
regarding EMC, and all equipment must be installed and put into service according to the EMC information specified.
In compliance with the European Directive on Waste Electrical and Electronic Equipment (WEEE) 2002/96/EC, do not
dispose of this product as unsorted municipal waste. This device contains WEEE materials; please contact your
distributor regarding take-back or recycling of the device. If you are unsure how to reach your distributor, please call
Nonin for your distributor’s contact information.
This device’s display will go blank after 10 seconds of inadequate signals. The data update period is every 1.5 seconds.
Portable and mobile RF communications equipment can affect medical electrical equipment.
This device is designed to determine the percentage of arterial oxygen saturation of functional hemoglobin. Factors that
may degrade pulse oximeter performance or affect the accuracy of the measurement include the following:
A functional tester cannot be used to assess the accuracy of a pulse oximeter monitor or sensor.
All parts and accessories connected to the serial port of this device must be certified according to at least IEC Standard
EN 60950, IEC 62368-1, or UL1950 for data-processing equipment.
This device is a precision electronic instrument and must be repaired by trained Nonin personnel only. Field repair of the
device is not possible. Do not attempt to open the case or repair the electronics. Opening the case may damage the
device and void the warranty.
Any sign or evidence of opening the system, field service by non-Nonin personnel, tampering, or any kind of misuse or
abuse of the system, shall void the warranty in its entirety.
Replace batteries within 30 seconds to avoid losing settings (date, time, and data stored in memory) or corrupting data.
Use only the Nonin-branded Model 2000SL, 2000T, or 2000SA veterinary sensors for monitoring. These sensors are
manufactured to meet the calibration requirements for the Nonin Model 2500A VET pulse oximeter. The oximeter is
calibrated for adult human hemoglobin measured at the finger tip. Although animal hemoglobin has similar optical
characteristics, other types of hemoglobin or alternate sensor locations may affect the calibration.
Certain pharmacologic agents used to sedate or anesthetize animals may have cardiovascular effects that can adversely
affect the performance of the pulse oximeter by reducing the perfusion to the sensor site. Examples of commonly used
agents that may have this type of effect on certain animal species are Detomidine HCl and Xylazine HCl.
There is a wide range of variability between animal species and their respective differences in anatomy, physiology, and
responses to veterinary pharmacological agents. Therefore, the veterinary professional will need to use discretion when
selecting sensors and/or sensor sites that are appropriate for the animal species and the monitoring conditions.
When attaching the pulse oximeter sensor, make sure to secure the sensor in a manner that will not restrict perfusion.
An improperly applied sensor could inhibit proper function of the pulse oximeter and cause discomfort or localized
ischemia to the animal.
Failure of a network data coupling (serial cable/connectors) will result in loss of data transfer.
Cautions (Continued)
- excessive ambient light
- excessive motion
- electrosurgical interference
- blood flow restrictors (arterial catheters, blood
pressure cuffs, infusion lines, etc.)
- moisture in the sensor (for non-lingual applications)
- improperly applied sensor
- incorrect sensor type
- inadequate signal
- venous pulsations
- anemia or low hemoglobin concentrations
- cardiogreen and other intravascular dyes
- carboxyhemoglobin
- methemoglobin
- dysfunctional hemoglobin
- residue (e.g., dried blood, dirt, grease, oil) in the light
path

4
Guide to Symbols
Guide to Symbols
This table describes the symbols that are found on the Model 2500A VET system or packaging.
Detailed information about functional symbols can be found in “Displays, Indicators, and Controls.”
Table 1: Symbols
Symbol Description
CAUTION!
Consult Instructions for Use.
Follow Instructions for Use.
Type BF Applied Part (patient isolation from electrical shock).
UL Mark for Canada and the United States with respect to electric shock, fire, and
mechanical hazards only in accordance with:
• ANSI/AAMI ES60601-1 (2005 + C1:09 + A2:10) and CAN/CSA-C22.2 No. 60601-
1 (2008)
• ISO 80601-2-61:2011, IEC 60601-1-8: 2006+A1:2012
CE Marking indicating conformance to EC directive No. 93/42/EEC concerning medical
devices.
SN Serial Number (located under the back cover).
IP32
Protected against vertically falling water drops when enclosure is tilted up to 15
degrees and ingress of solid foreign objects greater than or equal to 2.5 mm (0.1 in.) in
diameter per IEC 60529.
Indicates separate collection for electrical and electronic equipment (WEEE).
Authorized Representative in the European Community.
Manufacturer
Catalogue Number
Quantity
Date of Manufacture
Country of Manufacture
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5
Guide to Symbols
Storage/Shipping Temperature Range
RoHS Compliant (China)
Display Symbols
%SpO2%SpO2Display
Pulse Rate Display
Pulse Quality LED
Low Battery LED
Alarm Silence LED
Front Panel Buttons
On/Off
Advance
Table 1: Symbols (Continued)
Symbol Description

6
Displays, Indicators, and Controls
Displays, Indicators, and Controls
This chapter describes the displays, indicators, and controls (figure 1) for the Model 2500A VET.
Figure 1: Model 2500A VET - Front View
Displays
%SpO2 SpO2Display
The upper 3-digit light-emitting diode (LED) display shows the current oxygen
saturation percentage. This display flashes during SpO2alarms.
This display also indicates if a pulse oximeter sensor fault or inadequate signal
condition exists. If one exists, a dash (-) appears in the leftmost position of the
SpO2display and the readings freeze. After 10 seconds, a dash appears in the
middle position of the SpO2display.
Pulse Rate Display
The lower 3-digit LED display shows the pulse rate in beats per minute. This
display flashes during pulse rate alarms.
During a pulse oximeter sensor fault or inadequate signal condition, the pulse rate
display freezes for 10 seconds and then a dash appears in the middle position of
the display.
SpO2Display
On / Off
Button
Pulse Quality LED
Indicator (Tricolor)
Pulse Rate
Display
Pulse Oximeter
Sensor
Connector
Advance Button
Low Battery
LED Indicator
Alarm Bar LED
(Bicolor)
Speaker
Alarm Silence
LED Indicator

7
Displays, Indicators, and Controls
Indicators
Pulse Quality LED Indicator
Located above the On/Off button, this tricolor indicator blinks once for each
detected pulse and changes color with the pulse strength signal:
•Green indicates a good pulse strength.
•Amber indicates a marginal pulse strength. To improve signal quality,
reposition the sensor, try a different sensor type, eliminate animal movement,
or improve the site’s circulation.
•Red indicates an inadequate pulse strength. When the Pulse Quality indicator
is red, SpO2and pulse rate values are not updated. After 10 seconds, the
values are replaced with dashes, indicating that readings are not possible.
Low Battery LED Indicator
This amber indicator flashes to indicate a low or critically low battery. It is a medium
priority alarm.
When batteries are critically low, the digital displays go blank and the Pulse Quality
indicator blinks amber or red. Any SpO2or pulse rate alarms in effect when
critically low battery capacity is reached are latched, and flashing dashes appear
on the corresponding display. After 10 minutes at critically low battery capacity, the
pulse oximeter automatically shuts off.
Alarm Silence LED Indicator
Located left of the On/Off button, this amber indicator blinks when all audible
alarms are temporarily silenced. If the alarm volume is set to OFF, the Alarm
Silence indicator is solidly lit.
Alarm Bar LED Indicator
Located near the top of the device, this indicator flashes:
•Amber during medium priority alarms
•Red during high priority alarms
Audible Indicators
The pulse rate tone beeps for each detected pulse. This beep changes in pitch with
SpO2values. The default volume is OFF. During normal operation, the volume can
be changed by momentarily pressing the Advance button.
Audible alarms also sound for high and medium priority alarms. See “Alarms” for
more information.

8
Displays, Indicators, and Controls
Controls
On/Off Button
This button turns the device on and off.
During Setup mode, this button selects the value of a setting and advances to the
next setting.
Advance Button
During normal operation, this button allows the user to adjust the volume or review
settings.
During Setup mode, this button is used to scroll through the values for a setting.

9
Introduction
Introduction
The Model 2500A VET is a digital handheld pulse oximeter that displays numerical values for blood
oxygen saturation (%SpO2) and pulse rate on animals. It provides audible and visual alarms for both
medium and high priority conditions.
The pulse oximeter determines functional oxygen saturation of arterial hemoglobin (SpO2) by
measuring the absorption of red and infrared light passing through perfused tissue. Changes in
absorption caused by the pulsation of blood in the vascular bed are used to determine oxygen
saturation and pulse rate.
Oxygen saturation and pulse rate values are displayed by light-emitting diode (LED) digital displays.
On each detected pulse, the Pulse Quality indicator blinks. Pulse quality signals are graded as good
(green), marginal (amber), or inadequate (red) and are indicated as such by the Pulse Quality
indicator. This simple method gives the user a pulse-by-pulse visual indication of waveform signal
quality without requiring the user to perform complex waveform analysis.
The Model 2500A VET pulse oximeter may be used with a variety of Nonin-branded veterinary
oximeter sensors.
A sensor disconnect or malfunction is indicated by a red blinking Pulse Quality indicator and/or a
dash to the left of the SpO2value on the LED display. When adequate pulse signals are not received,
the SpO2and/or pulse rate numerical values are replaced by dashes.
The device requires no routine calibration or maintenance other than replacing batteries or
recharging the battery pack. This device typically operates for 60 hours continuously between
alkaline battery replacements, or for 40 hours with the Model 2500B Rechargeable NiMH (Nickel
Metal Hydride) Battery Pack.
Unpacking the Model 2500A VET
The Model 2500A VET complete system includes:
• 1 Model 2500A VET Pulse Oximeter
• 1 Model 2500A VET Operator’s Manual on CD
• 1 Nonin Small Lingual Clip Pulse Oximeter Sensor
• 4 AA-Size Alkaline Batteries
Confirm the items listed are packed with the system. If any item on this list is missing or damaged,
contact your distributor. Contact the carrier immediately if the shipping carton is damaged.

10
Introduction
Batteries
The Model 2500A VET can be powered by either 4 AA-size alkaline batteries or the optional Model
2500B Rechargeable NiMH (Nickel Metal Hydride) Battery Pack.
Commercially available rechargeable AA batteries can be used in the Model 2500A VET, but are not
recommended by Nonin.
Operating Life:
• Alkaline batteries - 60 hours, continuous
• Rechargeable NiMH battery pack - 40 hours, continuous
Storage Life:
• Alkaline batteries:
• If calendar/clock is set, approximately 6 weeks.
• If calendar/clock is not set, approximately 10 -12 months.
• Rechargeable NiMH battery pack:
• If calendar/clock is set, approximately 3 weeks.
• If calendar/clock is not set, approximately 2 months.
Recharge Time Using Model 2500C Charger Stand:
• Rechargeable NiMH battery pack - 180 minutes
Low and Critically Low Battery
Low and critically low battery capacity is indicated with a flashing Low Battery indicator and a
medium priority alarm.
When the batteries are low, the Low Battery indicator flashes and battery capacity allows for less
than 30 minutes of normal operation.
When batteries are critically low, the Low Battery indicator flashes, the digital displays go blank, and
the Pulse Quality indicator blinks amber or red, but not green. Any SpO2or pulse rate alarms in effect
when critically low battery capacity is reached are latched, and flashing dashes appear on the
corresponding display. After 10 minutes at critically low battery capacity, the pulse oximeter shuts
off automatically.
CAUTION: Use only Nonin-specified battery types with this device.
CAUTION: Do not use fully charged and partially charged batteries at the same time.
This may cause the batteries to leak.
WARNING: The device turns off after approximately 10 minutes when at critically low
battery capacity.
CAUTION: Replace the batteries as soon as possible after a low-battery indication.
Always replace the batteries with fully charged batteries.
!
!
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11
Introduction
Installing Batteries
1. Press the battery cover latch (figure 2), and slide off the battery cover from the bottom of the
unit.
2. Insert 4 new AA-size alkaline batteries or a rechargeable NiMH battery pack. Be sure to insert
the batteries in the correct position, as indicated by the polarity markings (+ and -) inside the
battery compartment (figure 3).
3. Replace the battery cover and turn on the device. If the unit does not turn on, see
“Troubleshooting.”
Figure 2: Model 2500A VET - Rear View
Figure 3: Installing Batteries
WARNING: Before changing the batteries, make sure the device is off and the sensor
is not applied to the animal.
CAUTION: Replace batteries within 30 seconds to avoid losing settings (date, time,
and data stored in memory) or corrupting data.
!
5822-600-07
UL 60601-1
US PATENT # Re. 33,643
PULSE OXIMETER
MODEL 2500A VET
PLYMOUTH, MN USA
NONIN MEDICAL, INC.
4 X 1.5V AA
IEC LR6
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30EM
See Accompanying
Documents
VETERINARY
USE ONLY
Battery Cover
Latch
Battery
Cover
Battery
Orientation
AA-size Alkaline
Batteries
Battery Pack

12
Introduction
Important Notes about Battery Use
Four AA alkaline batteries provide the device with approximately 60 hours of continuous operation.
The rechargeable NiMH battery pack provides approximately 40 hours of continuous operation.
Clock/calendar settings can significantly affect battery storage life. Batteries drain during storage,
but they drain much more quickly when the clock/calendar functions are set. Refer to “Clock and
Calendar Settings” for more information.
When Using AA Batteries
• If the clock/calendar is not set when the unit is stored, alkaline batteries will require replacement
in 10-12 months if the unit has not been used.
• If the clock/calendar is set when the unit is stored and if the unit has not been used, alkaline
batteries will require replacement in about 6 weeks.
• Using the oximeter will shorten the required replacement time.
When Using the Rechargeable NiMH Battery Pack
• If the clock/calendar is not set when the unit is stored, and if the unit has not been used, the
rechargeable NiMH battery pack will need recharging at least every 2 months.
• If the clock/calendar is set when the unit is stored, and if the unit has not been used, the
rechargeable NiMH battery pack will need recharging at least every 3 weeks.
• Using the oximeter will shorten the required recharging time.
Recharging Batteries (NiMH Battery Pack Only)
• When the unit is completely discharged, it takes approximately 180 minutes to recharge the
NiMH battery pack with the Model 2500C Charger Stand.
• The expected useful life of the rechargeable NiMH battery pack is 500 charge/discharge cycles,
or approximately 2 years, whichever is first. The battery pack must be charged at least once
each year to maintain optimal battery life.
• AA alkaline batteries cannot be recharged in the charging stand.

13
Using the 2500A VET Pulse Oximeter
Using the 2500A VET Pulse Oximeter
Connecting the Sensor
Connect the pulse oximeter sensor (with the Nonin logo facing up) to the top of the device (figure 4).
Ensure the sensor is firmly plugged in.
Refer to “Sensor Placement” or to the specific sensor package insert for pulse oximeter sensor
positioning information.
Figure 4: Connecting the Sensor
Power On/Off
• To turn ON, press and release On/Off .
• To turn OFF, press and hold On/Off for approximately 2 seconds.
To conserve battery life, the device automatically powers off after 10 minutes of inactivity. Inactivity
is indicated by dashes on the displays and may result from an improperly connected or positioned
sensor, or from an inadequate animal pulse signal.
Power On Self-Test
When the Model 2500A VET is turned on for normal operation, the unit cycles through a startup/
initialization sequence before displaying valid data. During startup, always check for missing
indicators or LED display segments and ensure the audible indicator sounds. If any indicator does
not function, do not use the device. Contact Nonin Technical Service for repair or replacement.
During its normal startup sequence, the device cycles as follows:
1. 888 888 appears briefly in the SpO2and pulse rate displays.
2. Pulse Quality and Alarm Bar indicators flash red for 1 second.
3. Low Battery and Alarm Silence indicators turn on steadily for a few seconds.
4. The Pulse Quality indicator flashes green and the Alarm Bar flashes amber for 1 second.
5. Clock time in hours and minutes (as currently set in the memory) briefly appears in the SpO2
and pulse rate displays (e.g., 04 41).
6. Software revision numbers display for approximately 1 second each in the following order:
• Main revision (“A” + 3 digits)
• Memory revision (“nn” (for m) + 3 digits)
• Sound revision (“S” + 3 digits)

14
Using the 2500A VET Pulse Oximeter
7. Three beeps sound.
8. A dash ( - ) appears in the center digit of the SpO2and pulse rate displays until a valid pulse
signal is detected.
NOTES:
• The 2-minute alarm silence feature is automatically enabled immediately after the startup
sequence.
• This startup sequence varies slightly when entering Setup mode at power on.
Monitoring
Verify the pulse oximeter sensor is properly positioned on the animal. Ensure the pulse oximeter is
sensing adequate pulse quality by verifying:
1. Pulse Quality indicator blinks green.
2. Pulse rate and SpO2displays show readings.
3. Pulse Quality indicator blinks in time with the pulse rate for at least 10 seconds.
If the Pulse Quality indicator blinks red or amber or blinks erratically, reposition or replace the sensor.
If the sensor is not properly positioned, or a sensor is not attached to the pulse oximeter after startup
(a few seconds after powering on), both the SpO2 and pulse rate displays will display a single dash
until a valid pulse signal is detected.
Veterinary Sensors
The Model 2500A VET pulse oximeter features sensors ideal for a variety of veterinary applications.
Each sensor is designed for a specific site application and specific animal size. The sensors include:
• Small Lingual Clip (2000SL) – Recommended for spot checks or short-term continuous
monitoring. For most small animals, the sensor performs best when used on the tongue.
• Small Animal Flex Sensor (2000SA) – Suitable for use on the toe of a dog and on the paw or at
the base of the tail on very small animals (e.g., rats).
• Transflectance Sensor (2000T) – Suitable for placement on the underside, base of the tail (near
the anal orifice) of a dog.
Nonin’s veterinary sensors are reusable. Clean them with a mild detergent. Allow enough time for
the sensor to dry thoroughly before reusing.
CAUTION: Use only the Nonin-branded Model 2000SL, 2000T, or 2000SA veterinary
sensors for monitoring. These sensors are manufactured to meet the calibration
requirements for the Nonin Model 2500A VET pulse oximeter. The oximeter is
calibrated for adult human hemoglobin measured at the finger tip. Although animal
hemoglobin has similar optical characteristics, other types of hemoglobin or alternate
sensor locations may affect the calibration.
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