Dräger Narkomed 3 Assembly instructions

NORTH
AMERICAN
DRÄGER
OPERATOR’SINSTRUCTIONMANUAL
NARKOMED 3
ANESTHESIA SYSTEM
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NARKOMED 3
OPERATOR’S INSTRUCTION MANUAL
TABLE OF CONTENTS
FOREWORD ....................................................i
GENERAL DESCRIPTION ......................................... 1
MOVING THE NARKOMED 3 ....................................... 3
GAS DELIVERY SYSTEM .......................................... 4
AV-E ANESTHESIA VENTILATOR .................................. 20
POWER SUPPLY SYSTEM ........................................ 23
MAIN SWITCH PANEL ........................................... 26
MONITORING SYSTEM .......................................... 28
NARKOMED 3 SETUP & INSTALLATION ............................. 53
PRE-USE CHECKOUT PROCEDURE ................................ 62
CLEANING AND STERILIZATION ................................... 69
PRECAUTIONS (MAINTENANCE & USE) ............................. 71
SPARE AND REPLACEMENT PARTS ................................ 74
APPENDIX 1: NARKOMED 3 SPECIFICATIONS ........................ 76
APPENDIX 2: NARKOMED 3 ALARM MESSAGES ....................... 84
APPENDIX 3: NARKOMED 3 TROUBLESHOOTING GUIDE ................ 90
APPENDIX 4: VISUAL SYMBOLS ................................... 91
INDEX ....................................................... 92
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FOREWORD
North American Dräger anesthesia products
OPERATOR’S RESPONSIBILITY FOR PATIENT SAFETY
are designed to provide the greatest degree of
patient safety that is practically and
technologically feasible. The design of the
equipment, the accompanying literature, and
the labeling on the equipment take into
consideration that the purchase and use of
the equipment are restricted to trained
professionals, and that certain inherent
characteristics of the equipment are known to
the trained operator. Instructions, warnings,
and caution statements are limited, therefore,
to the specifics of the North American Dräger
design.Thispublicationexcludesreferencesto
hazards which are obvious to a medical
professional, to the consequences of product
misuse, and to potentially adverse effects in
patients with abnormal conditions. Product
modification or misuse can be dangerous.
North American Dräger disclaims all liability
for the consequences of product alterations or
modifications, as well as for the consequences
which might result from the combination of
North American Dräger products with
products supplied by other manufacturers if
such a combination is not endorsed by North
American Dräger.
The operator of the anesthesia system must
recognize that the means of monitoring and
discovering hazardous conditions are specific
to the composition of the system and the
various components of the system. It is the
operator, and not the various manufacturers
or suppliers of components, who has control
overthefinal compositionandarrangementof
the anesthesia system used in the operating
room. Therefore, the responsibility for
choosing the appropriate safety monitoring
devices rests with the operator and user of
the equipment.
Patient safety may be achieved through a
variety of different means depending on the
institutional procedures, the preference of the
operator, and the application of the system.
These means range from electronic
surveillance of equipment performance and
patient condition to simple, direct contact
between operator and patient (direct observa-
tion of clinical signs). The responsibility for
the selection of the best level of patient
monitoring belongs solely to the equipment
operator. To this extent, the manufacturer,
North American Dräger, disclaims responsi-
bility for the adequacy of the monitoring
package selected for use with the anesthesia
system. However, North American Dräger is
available for consultation to discuss
monitoring options for different applications.
NorthAmericanDräger’sliability,whether
LIMITATION OF LIABILITY
arisingoutoforrelatedtomanufactureand
sale of the goods, their installation,
demonstration, sales representation, use,
performance, or otherwise, including any
liability based upon North American
Dräger’s Product Warranty, is subject to
and limited to the exclusive terms and
conditionsassetforth, whether basedupon
breach of warranty or any other cause of
action whatsoever, regardless of any fault
attributabletoNorthAmericanDrägerand
regardless of the form of action (including,
without limitation, breach of warranty,
negligence, strict liability, or otherwise).
THESTATED EXPRESSEDWARRANTIESARE
IN LIEU OF ALL OTHER WARRANTIES, EX-
PRESSEDORIMPLIED,INCLUDING,WITHOUT
LIMITATION, WARRANTIES OF MERCHANT-
ABILITY, FITNESS FOR ANY PARTICULAR
PURPOSE, OR NON-INFRINGEMENT.
North American Dräger shall not be liable
for, nor shall buyer be entitled to recover
any special incidental, or consequential
damages or for any liability incurred by
buyer to any third party in any way arising
out of or relating to the goods. North
American Dräger disclaims any liability
arising from a degraded system due to an
improperly designed or malfunctioning
third party interfaced product.
i
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WARRANTY
All North American Dräger products are
guaranteed to be free of defects of
workmanshipormaterialforaperiodofone
year from date of delivery. The following
are exceptions to this warranty:
1. Defects caused by misuse,
mishandling, tampering, or by
modifications not authorized by
North American Dräger or its
representatives are not covered.
2. Rubber and plastic components and
materialsarewarrantedtobefreeof
defects at time of delivery.
3. Respiratoryvolumesensors,fuel-cell
oxygen sensors, and the MINUTE
VOLUMETER have a six-month
limited warranty. Fuel-cell oxygen
sensor capsules have an
eight-month limited warranty from
the date of delivery.
4. Warranty for Durasensors®is
limited to a period of six months
from the date of delivery.
Oxisensors™are warranted to be
free of defects at time of delivery.
Any product which proves to be defective in
workmanship or material will be replaced,
credited, or repaired with North American
Drägerholdingtheoption. North American
Dräger is not responsible for deterioration,
wear, or abuse. In any case, North
American Dräger will not be liable beyond
the original selling price.
Goodsaresubjecttothetermsofapplicable
warranty. Defective products will be
accepted for return at North American
Dräger’s discretion, and only during the
warranty period.
Application of this warranty is subject to
the following conditions:
1. North American Dräger or its
authorized representative must be
promptly notified, in writing, upon
detectionofthedefectivematerialor
equipment.
2. Defective material or equipment
mustbereturned, shippingprepaid,
to North American Dräger or its
authorized representative.
3. Examination by North American
Dräger or its authorized represen-
tative must confirm that the defect
is covered by the terms of this
warranty.
4. Notification in writing, of defective
material or equipment must be
received by North American Dräger
or its authorized representative no
later than two (2) weeks following
expiration of this warranty.
In order to assure complete protection
under this warranty, the
Warranty-Registrationcardand/orPeriodic
Manufacturer’s Service record (if
applicable) must be returned to North
American Dräger within ten (10) days of
receipt of the equipment.
The above is the sole warranty provided by
NorthAmericanDräger.Nootherwarranty
expressed or implied is intended.
Representatives of North American Dräger
are not authorized to modify the terms of
this warranty.
DURASENSOR and OXISENSOR are Trademarks of Nellcor Incorporated.
ii
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TERMS AND CONDITIONS
All merchandise to be returned must have
prior written authorization by North
American Dräger, and a valid Return
Material Authorization (RMA) Number
shall appear on the shipping label, packing
slip, purchase order and any other related
documents.
When requesting authorization to return
material, the following information should
be provided:
1. Customer purchase order and date.
2. NAD order number, shipping date,
and method of shipment (available
from packing slip).
3. Invoice date and number.
4. Quantity,NADproductnumber,and
description of merchandise to be
returned.
5. Reason for return.
The following are accepted reasons for
return of merchandise:
1. Materialfailurewithinthewarranty
period.
2. Repairs.
3. Customer order in error.
4. Sales/Service order entry error.
5. Shipping Errors.
Any shortages or errors in shipment of
goods must be reported to North American
Dräger within two (2) weeks of receipt.
Material is subject to the terms of any
applicable warranty. Premature failure of
products shall be accepted for return at
North American Dräger’s discretion, and
only during the warranty period.
Material to be returned which is not under
warranty should have been purchased
withinthirtydaysofrequestforreturn,and
returned within thirty days after request.
Material shall be returned unused, and in
NADshippingcontainers.Materialshallbe
subjecttoa20%restockingcharge,withthe
exception of material failure within the
warranty period or NAD error.
The following merchandise is not eligible
for return, unless proven defective:
1. Sterile material, unless shipped in
error by NAD.
2. Rubberandplasticcomponentsthat
have been used.
3. Speciallyorderedorproduceditems.
5. Material which has been altered or
abused.
All items to be returned should be shipped
to:
North American Dräger
Technical Service Department
24 Commerce Drive
Telford, PA 18969
Attn: Customer Service Department
(Include RMA Number)
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REPAIR AND SERVICE
Repair of this equipment must be
performed by an authorized North
American Dräger Technical Service
Representative.
North American Dräger products/material
in need of factory repair shall be sent to:
North American Dräger
Technical Service Department
24 Commerce Drive
Telford, PA 18969
(Include RMA Number)
North American Dräger recommends that
anesthesia machines be serviced at three
month intervals.
Periodic Manufacturer’s Service Contracts
are available for products manufacturedby
NorthAmericanDräger.Theseagreements
are available from the NAD Inc. Technical
Service Department or our Factory
Authorized Technical Service Centers.
Federal law restricts this device to sale by, or on the order of, a physician.
RESTRICTION
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GENERAL DESCRIPTION
The NARKOMED®3 is a continuous flow
anesthesia system. All NARKOMED 3
machines are equipped with pneumatic
circuitry, for mixing gases and liquid
agent vapor, and a comprehensive
monitoring system.
The pneumatic system is capable of
delivering up to four gases simultaneously
and one liquid anesthetic agent from a
selection of up to three. Oxygen (O2) and
nitrous oxide (N2O) are standard on all
NARKOMED 3 machines. Optional gases
are air, carbon dioxide (CO2), and Oxygen-
Helium (O2-He).
Up to three optional vaporizers may be
mounted on the vaporizer exclusion
system. The optional vaporizers are
Halothane, Enflurane and Isoflurane.
The vaporizers are mechanically
interlocked so that only one vaporizer may
be used at a time.
The anesthesia machine’s monitoring
system integrates the functions of the
electronic monitors and organizes
information from these monitors on two
screens.
DISPLAY SCREENS
SENSOR/CORD
LINE WRAPS
PATIENT
INTERFACE
PANEL
MANUAL
SPHYGMOMANOMETER
GAUGE (OPTIONAL)
VENTILATOR
BELLOWS
BREATHING SYSTEM
SENSOR INTERFACE
PANEL
MAIN SWITCH
PANEL
BOOM ARM
(OPTIONAL) SYSTEM CONTROL
KEYPAD
MONITOR
RACK
AV-E VENTILATOR
THREE-GAS OR
FOUR-GAS SELECTOR
SWITCH (OPTIONAL)
FLOWMETER
BANK
VAPORIZERS
(OPTIONAL)
FRESHGAS
COMMON
OUTLET
O
2 FLUSH
BUTTON
OP30001
AUXILIARY OXYGEN
FLOWMETER (OPTIONAL)
Figure 1 NARKOMED 3 Anesthesia System, Front View
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GENERAL DESCRIPTION (continued)
The monitoring package includes an
oxygen analyzer, breathing pressure
monitor, respiratory volume monitor,
respiratory gas analyzer, pulse oximeter,
andnoninvasivebloodpressure monitor.In
addition, the anesthesia machine monitors
all key anesthesia system functions (e.g.,
oxygen supply pressure, O2/N2O flow ratio,
backup battery status).
The monitoring system organizes alarm
messages into Warnings, Cautions, and
Advisories, presenting them on the central
alarm display.
Audible alarms are organized into three
distinct sound patterns and are delivered
by a central audio annunciator. A second
display screen can present real-time trace,
trend, bargraph and data displays.
The NARKOMED 3 can be optionally
equipped with an absorber system and/or
a Bain circuit adapter. Two different
scavenger systems are available,
permitting the best match with the
hospital’s waste gas disposal system. An
adjustable Positive End Expiratory
Pressure (PEEP) valve is available on the
ventilator or absorber assembly.
OP30002
FIVE PORT
SERIAL INTERFACE
(OPTIONAL)
AC CONVENIENCE
RECEPTACLES
(117 VAC OPTION)
VACUUM FITTINGS
FOR SUCTION
ASSEMBLY
(OPTIONAL)
AC POWER
CABLE
CIRCUIT
BREAKERS
PIPELINE
SUPPLY
FITTINGS
Figure 2 NARKOMED 3 Anesthesia System, Back View
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MOVING THE NARKOMED 3
When moving the NARKOMED 3, use only
the handles shown in Figure 3. DO NOT
push or pull the anesthesia machine using
the Absorber System, Vaporizers,
Ventilator Bellows, or Boom Arm.
Remove the Absorber System, along with
anyexternalmonitorsorequipment,before
moving the anesthesia machine.
Retract the boom arm, before moving the
anesthesia machine.
The NARKOMED 3 is equipped with two
locking casters on the front of the machine.
These casters may be unlocked by stepping
on the lock mechanism on top of the caster.
DO NOT attempt to move the anesthesia
machine while the casters are locked.
Exercise caution when moving the
anesthesia machine on ramps, or over
thresholds.
It is recommended that two people be used
when moving the machine.
HANDLE
PUSH/PULL BAR
(FRAME MOUNT)
(OPTIONAL)
PUSH/PULL BAR
(VENTILATOR MOUNT)
(OPTIONAL)
OP30003
Figure 3 Acceptable Handles for Transportation
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GAS DELIVERY SYSTEM
Standard Gases
The NARKOMED 3 is equipped with
pneumatic circuitry for the delivery of
oxygen (O2) and nitrous oxide (N2O). It
has at least one oxygen and one nitrous
oxide yoke for attachment of gas cylinders.
Optional Gases
In addition to oxygen and nitrous oxide,
the NARKOMED 3 may be equipped with
up to two additional gases. The additional
gases may be air, oxygen-helium (O2-He)
mixture (25% O2, 75% He) or carbon
dioxide (CO2). The additional gas is
supplied to the anesthesia system by
means of pin-indexed cylinders and yokes,
diameter-indexed safety system (DISS)
pipeline connections, or both (if so
selected).
Color Coding
Each connection, valve, gauge, and
flowmeter is labeled and color coded for the
appropriate gas, as shown in the table
below.
Pipeline Connections
The DISS gas fittings for oxygen, nitrous
oxide, and an optional third gas are located
on the right side of the flowmeter housing.
The DISS fittings prevent improper
connection of supply hoses. The inlets
include check valves to prevent back flow
leakage into the atmosphere when supply
hoses are not connected, or into the
attached supply hoses when reserve
cylinders are in use.
Each pipeline connection is equipped with
a filter to prevent foreign material from
entering the internal gas piping of the
NARKOMED 3. Pipeline gases should be
supplied at 50-55 psi.
GAS MARKING COLOR CODE
U.S. CANADA (CSA)
Air AIR Yellow Black/White checkered
Carbon Dioxide CO2Gray Gray
Oxygen-Helium O2-He Green/Brown Diag. Stripes White/Brown Diag. Stripes
Nitrous Oxide N2O Blue Blue
Oxygen O2Green White
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GAS DELIVERY SYSTEM (continued)
Gas Cylinder Yokes
The NARKOMED 3 can be equipped with
a maximum of two oxygen and two nitrous
oxide cylinder hanger yokes (Figure 4). An
additional yoke for an optional third gas is
also available. The cylinder is the primary
supply for carbon dioxide and oxygen-
helium.
To prevent a cylinder from being
improperly connected, the yokes are
labeled, color-coded, and keyed for gas-
specific cylinders using the Pin Index
Safety System.
O 2 YOKE
O
2 YOKE
(OPTIONAL)
N
2
O YOKE
(OPTIONAL)
N
2 O YOKE
AIR ,CO 2 ,
OR O
2 -He YOKE
(OPTIONAL)
OP30004
Figure 4 Gas Cylinder Yokes (Right, Rear View)
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GAS DELIVERY SYSTEM (continued)
A sintered bronze filter within each yoke
prevents foreign material from entering
the internal gas piping of the NARKOMED
3. A check valve in each yoke prevents
back flow into the cylinder or leakage into
the atmosphere if the cylinder is not
mounted on the yoke.
When the machine is configured with two
yokes for the same gas, the check valve
prevents migration of gas from one
cylinder to another. If a cylinder is not
mounted to a yoke, the attached yoke plug
shouldbeplacedbetweentheyokehandle’s
threaded bolt and the yoke’s gas inlet.
When attaching a cylinder, ensureonly one
washer is installed between the cylinder
and the yoke gas inlet. The use of
multiple washers may compromise the Pin
Index Safety System. The integrity of both
index pins must be verified whenever a
new cylinder is installed. Cylinders
attached to the hanger yokes must contain
gasattherecommendedpressuresoutlined
in the table below.
RECOMMENDED RESERVE CYLINDER
MAXIMUM PRESSURES
GAS MAX PSI
Air 2200
Carbon Dioxide 830
Oxygen-Helium 2400
Nitrous Oxide 745
Oxygen 2200
Pressure Regulators
Each cylinder gas circuit incorporates a
pressure regulator that reduces the gas
pressure. These regulators are preset
below the commonly used hospital pipeline
pressure of 50-55 psi to ensure that gas
will be supplied from the pipeline and not
the cylinder if both sources of supply are
open. Pressure relief valves, integral to the
regulator, prevent excessive pressure in
case of regulator failure or excessive
pipeline pressure.
NOTE: Canadian machines are equipped
with an additional pipeline overpressure
relief valve that is set to open at 75 psi
(520 kPa).
Cylinder Pressure Gauges
Each cylinder gas circuit on the
NARKOMED 3 is provided with a cylinder
pressure gauge, located at the bottom of
the flowmeter panel on the front of the
machine (Figures 5, 6, & 7). Each gauge is
labeled and color-coded for its respective
gas.
When a cylinder’s valve is open, its
pressure gauge indicates the gas pressure
in the cylinder. The dial is marked with
concentric scales in psi and kPa.
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GAS DELIVERY SYSTEM (continued)
10
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6
5
4
3
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9
10 1000
900
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100100
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400
500
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700
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900
1000
N2O
O2CYLINDERCYLINDER
PIPELINEPIPELINE
COLOR-CODED
GAS LABEL
OP10005
CYLINDER
PRESSURE
GAUGE, O2
PIPELINE
PRESSURE
GAUGE, O2
PRECISION FLOW
CONTROL KNOB, O2
FLOWMETER KNOB
GUARD
INDICATOR
FLOATS, O2
COARSE FLOW TUBE
(l/min), O2
FINE FLOW TUBE
(ml/min), O2
N2O
O2
Figure 5 Standard Flowmeter Bank
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GAS DELIVERY SYSTEM (continued)
COARSE FLOW TUBE
FINE FLOW TUBE
INDICATOR
FLOWMETER KNOB
PRECISION FLOW
PIPELINE PRESSURE
CYLINDER PRESSURE
(l/min), N20
(ml/min), N2O
FLOATS, N2O
GUARD
CONTROL VALVE, N2O
GAUGE, N2O
GAUGE, N2O
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7
6
5
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3
2
1
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100
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300
400
500
600
700
800
900
1000
N2OAIR
AIR CYLINDERCYLINDERCYLINDER
PIPELINEPIPELINEPIPELINE
OP10006
02
N2O
02
Figure 6 Three-Gas Flowmeter Bank (Air Option)
8
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GAS DELIVERY SYSTEM (continued)
FINE FLOW TUBE
COARSE FLOW TUBE
CYLINDER
PRESSURE
PIPELINE
PRESSURE
PRECISION FLOW
FLOWMETER KNOB
GUARD
INDICATOR
(ml/min), O2
GAUGE, O2
GAUGE, O2
CONTROL KNOB, O2
FLOATS, O2
(l/min), O2
PIPELINE PIPELINE PIPELINE
CYLINDER CYLINDER CYLINDER
1000
900
800
700
600
500
400
300
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100 100
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1000 10
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1.0
.8
.6
.4
.2
AIR
OP10007
O2
AIR
10
9
8
7
6
5
4
3
2
O2-He
O2-HeN2O
N2OO2
Figure 7 Four-Gas Flowmeter Bank (Air & Oxygen-Helium Option)
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GAS DELIVERY SYSTEM (continued)
For non-liquefied gases (O2, Air, O2-He) the
indicated pressure is proportional to the
gas content of the cylinder. For liquefied
gases (N2O, CO2) the gauge indicates the
vapor pressure of the liquefied gas in the
cylinder. This pressure remains constant
until all of the liquid in the cylinder has
vaporized. When the liquid has vaporized,
the cylinder pressure decreases
proportionally with further removal of gas
from the cylinder.
NOTE: If two reserve cylinders of the same
gas are open at the same time, the cylinder
pressure gauge will indicate the pressure
in the cylinder having the higher pressure.
Pipeline Pressure Gauges
Pipeline pressure gauges for oxygen and
nitrous oxide are standard (Figures 5, 6, &
7). If the anesthesia machine is equipped
with air, a pipeline pressure gauge for air
is also included.
These gauges are located directly below
their corresponding flowmeters and flow
control valves, and are labeled and color-
coded for their respective gases. Concentric
scales in psi and kPa indicate the delivered
pipeline supply pressure. When the
machine is connected to a functioning
pipelinesupply,eachgaugeshouldindicate
50-55 psi. A deviation from within this
range indicates an improperly adjusted
pipeline gas supply system and may
adversely affect the operation of the
NARKOMED 3.
A fluctuating pipeline supply pressure, for
example, would cause a corresponding
fluctuation of the delivered flow of that
gas. An excessively low pipeline pressure
may activate the corresponding reserve
cylinder and deplete its contents (if the
reserve cylinder valve was left in the open
position).
Carbon dioxide and oxygen-helium mixture
supplies for NARKOMED 3 machines are
provided exclusively from cylinders. Thus,
these gases do not require pipeline
pressure gauges.
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GAS DELIVERY SYSTEM (continued)
Oxygen Supply Pressure Failure
Protection Device (OFPD)
The oxygen failure protection device
(OFPD) is a pneumatically operated valve
located in the anesthesia machine’s
internal supply lines for all machine gas
circuits except oxygen. The OFPD valve is
controlled by the gas pressure in the
oxygensupplyline.Properoxygenpressure
keeps the valve open. A failure or
reduction of pressure in the oxygen supply
line will proportionally reduce and
eventually shut off the supply of all other
gases.
When the OFPD is activated, the
flowmeters indicate a reduced gas flow,
proportional to the reduction of oxygen
supply pressure. When the oxygen supply
pressure (from either pipeline or reserve
cylinders) drops below approximately 37
psi, an "LO O2SUPPLY" alarm message
appears on the central alarm display. The
red "O2SUPPLY PRESSURE" indicator
light on the main switch panel lights, and
an intermittent audible alarm sounds.
If only one source of oxygen supply
pressure (either reserve cylinders or
pipeline) fails, while the other maintains
proper supply pressure within the
machine’s oxygen supply lines, the OFPD
and "LO O2SUPPLY" alarm will not
activate.
Flow Control Valves
A needle valve is located below the fine
flowmeter tube for each specific gas. This
valve is used to adjust the flow of gas
(Figures 5, 6, & 7). Counterclockwise
rotation of the valve knob increases flow,
while clockwise rotation decreases flow.
A zero stop prevents damage to the flow
control valve seats. If necessary, an
authorized service representative of North
American Dräger can readjust the stop.
Each flow control knob is identified by its
color code and chemical symbol. Also, the
oxygen flow control valve is touch-coded
with a deeply fluted knob.
Unless the anesthesia machine has been
specifically modified to eliminate the
minimum oxygen flow feature (see
"Minimum Oxygen Flow"), the flow of
oxygen cannot be totally shut off. DO NOT
force the oxygen flow control knob over its
end stop in an effort to shut off the flow.
Forcing the knob could damage the valve
seat.
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GAS DELIVERY SYSTEM (continued)
Flowmeters
Flowmeters, located immediately above
their corresponding flow control valves
(Figures 5, 6 & 7), display the flow rate of
each gas delivered for the fresh gas
mixture. Dual (fine and coarse) flowmeter
tubes are used in tandem for oxygen,
nitrous oxide, and air (if provided). Single
flowmeter tubes are used for other gases
when supplied.
Oxygen, nitrous oxide, and air flowmeters
are certified to be within ±2.5% of full
scale at 20° C and 760 mm Hg. Single
flowtubes are certified to be within ±5% of
full scale. Flowmeter ranges and
accuracies are outlined in the table below.
Oxygen, nitrous oxide and air flowmeters
are equipped with floats, half chrome-
plated and half colored red, to indicate free
movement through rotation. Single tube
flowmeters are equipped with stainless
steel or black glass floats. Regardless of
the float type, the position of the center of
the ball along the flowmeter scale should
be used as an indication of the flow rate.
All flowmeters are labeled and color-coded
at each end of the flowtube.
FLOWTUBE RANGES & ACCURACIES
GAS TUBE RANGE (l/min) ACCURACY (%FS)
Oxygen Fine 0-1 ±2.5
Oxygen Coarse 0-10 ±2.5
Nitrous Oxide Fine 0-1 ±2.5
Nitrous Oxide Coarse 0-10 ±2.5
Air Fine 0-1 ±2.5
Air Course 0 -10 ±2.5
Air Dual Tapered 0-1 ±50 cc of range
0-10 ±5
Oxygen-Helium Single 0-10 ±5
Carbon Dioxide Single 0- 1.0 ±5
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