TEAM LEADER : DANIEL FENTONKENNEDY KONGMARIE REVEKANTDAVID ENGELLERIC WELCHDEREK ZIELINSKICHRIS FREEMANMELISSA HARRISONRYAN MUCKELROBERTO CASTILLO ZAVALA

P13026: PORTABLE VENTILATOR

ENGINEERING SPECIFICATIONS

Portable Emergency Ventilator

Engineering Specifications - Revision 5 - 2/8/13

Specification Number Importance Sourc

e Function Specification (Metric) Unit of Measure Target Value Accuracy Comments / Status

S1 3 CN1 System Operation Volume Control Liters 0.2 - 1.2 10%

S2 3 CN1 System Operation Breathing Rate BPM, Breaths per Minute 4 -15

S3 3 CN1 System Operation Peak Flow Liter/Min 15 - 24 10%

S4 3 CN1 System Operation Air Assist Senitivity cm H20 0.5 - 1.5 10%

S5 3 CN1 System Safety High Pressure Alarm cm H20 10 - 70 10%

S6 3 CN1 System Operation DC Input Volts 6 - 16

S7 3 CN1 System Operation DC Internal Battery Volts 12

S8 3 CN4 System Operation Battery Operation Time Hours 1

S9 3 PRP System Safety Elasped Time Meter Hours 0 - 2000

S10 3 PRP System Longevity Pump Life Hours 2000

S11 3 PRP System Safety Secondary Pressure Relief cm H20 75

S12 3 PRP System Safety Timed Backup BPM seconds 15

S13 2 CN8 System Operation Blood Oxygen Level % 88-100 ±2

S15 2 System Robustness Operational Temperature Degrees Celsius 0 - 40

S16 2 CN2 System Portability Volume cm3 10,000

S17 3 CN2 System Portability Weight Kg <8 Importance Weight: 3 = Must Have, 2 = Nice to Have, 1 = Preference Only

PARKER T1-1HD-12-1NEAPeak Flow = 32.5* LPM12 VDCWeight = 1.5 kgPump Life = 3500 hours16.5 x 7 x 9.9 cm

(6.5 x 2.75 x 3.91 in)

PNEUMATIC SCHEMATIC

TUBING HEAD LOSS ANALYSIS(BETWEEN PUMP OUTLET AND VENTILATOR OUTLET)

Bernouli’s Equation Assumptions• Constant velocity, height and air density

Major Head Loss: • Dependent on length of tube between ventilator and pump exit

Minor Head Loss• Dependent on the expansion and contraction for two T-joints

( 𝑃1

𝜌1+𝑉 1

2

2+𝑔𝑧1)−( 𝑃1

𝜌2+𝑉 2

2

2+𝑔𝑧2)= 𝑃1− 𝑃2

𝜌 =h 𝑙𝑇

h 𝑙𝑇=h𝑙𝑚+h𝑙=( 𝑓 𝐿𝐷𝑉 2

2 )+2(𝐾 𝑐𝑉 2

2

2+𝐾𝑒

𝑉 22

2 )Δ 𝑃=𝜌 h 𝑙𝑇=𝜌 [( 𝑓 𝐿

𝐷𝑉 2

2 )+2(𝐾 𝑐𝑉 2

2

2 +𝐾 𝑒𝑉 2

2

2 )]=0.0198𝑝𝑠𝑖

MASS FLOW SENSOR ANALYSIS

Color Code

• Blue = Tubing• Black = T-Joint• Red = Mass Flow Sensor• Orange = Control Volume for Mass Flow Route• Green = Control Volume for Main Route

Cross Sectional View of Mass Flow Junction

MASS FLOW SENSOR ANALYSIS

Color Code

• Orange = Control Volume for Mass Flow Route• Green = Control Volume for Main Route

Analogy Explanation

• Current ≈ Flow Rate• Resistance ≈ Head Loss• Voltage Drop ≈ Pressure Drop → Constant through each path!

i2

i1

i

R2

R1

vi vfi

Circuit Analogy

MASS FLOW SENSOR ANALYSIS

Head Loss Through Main Tubing Path (Green)

• Minor• Expansion from first T-Joint to Tubing• Contraction from Tubing to second T-Joint

• Major• Frictional loss along length of tubing

Head Loss Through Mass Flow Path (Orange)

• Minor• Contraction from Original flow to first T-Joint• Expansion from first T-Joint to Tubing• Two curves (approximated as 90 degree angles)• Contraction from Tubing to second T-Joint• Expansion from second T-joint to original flow

• No Major Losses (length of tubing is negligible)• Mass Flow Sensor Pressure Drop

MASS FLOW SENSOR ANALYSIS

( 𝑃1

𝜌1+𝑉 1

2

2+𝑔 𝑧1)−( 𝑃1

𝜌2+𝑉 2

2

2+𝑔𝑧2)= 𝑃1− 𝑃2

𝜌 =h 𝑙𝑇⟹ ΔP=𝜌 h𝑙𝑇

h 𝑙𝑇=h𝑙𝑚+h𝑙

h 𝑙𝑚𝐶

=𝐾 𝑐𝑉 2

2h𝑙𝑚𝐸

=𝐾 𝑒𝑉 2

2

Pressure Drop

• Assuming constant height, density and velocity

Major Head Loss

Total Head Loss

=

Minor Head Losses

• Contraction and Expansion

• Curves

=

MASS FLOW SENSOR ANALYSISMass Flow Sensor Pressure Drop

• Calculated by interpolating from provided table• Assumed flow would be between 200 and 400 sccm (based on educated guess)

Δ 𝑃𝑚𝑓=31+𝑄2−200400−200

( 83−31 )

Final Calculations

• Only unknown is Q2

• Plugged all equations into an excel sheet and changed value of Q2 until the difference between the pressure drops in each path was negligible (8.49e-8)

𝑄2=278.73 𝑐𝑚3

𝑚𝑖𝑛

HONEYWELL AWM2300VFEATURES• Bidirectional sensing capability• Actual mass air flow sensing•Low differential pressure sensing

The AWM2000 Series microbridgemass airflow sensor is a passivedevice comprised of two Wheatstonebridges. Data is transmitted viaanalog.

A typical application is in medical respirators and ventilators.

HONEYWELL AWM2300V CONT.

Performance Characteristics @ 10.01 +/- 0.01 VDC, 25°C

Characteristic Value

Flow Range (Full Scale)

+/- 1000 sccm

Accuracy 2.5%

Weight 10.8g

Power Consumption

30mV – 50mV

Sensor Current Max. 0.6mA

Response Time

1msec – 3msec

Temp. Range Oper. -25°C to +85°C

Storage: -40°C to +90°CDimension 31.5mm x 54.4mm x

15.5mm

NPC-1210 LOW PRESSURE SENSOR

Applications:• Medical Equipment•Ventilation•Respirator monitoring

Features:• High Sensitivity•High accuracy•CB mountable package•DIP package•Solid-state reliability•Individual device traceability

NPC-1210 LOW PRESSURE SENSOR

Characteristic Value

Pressure Range(Full Scale)

1psi or 70.3cmH2OTo3psi or 155.1cmH20

Accuracy .5%

Weight 2.5g

Temp. Range Oper. -40°C to +125°C

Storage: -55°C to +150°C

Dimension 15.24mm x 15.24mm x 4.2mm

Output Type Analog

CONTROL SYSTEMK70 MCU Tower kitNEC 5.7” FutureTechnology TouchStoneLow-Voltage, 3-Phase Motor ControlMedial Development ModulePulse OximeterBluetooth Module

K70 TOWER SYSTEMTWR-K70F120M-KIT 32-bit ARM® Cortex™-M4

• All the ARMv7E-M architecture instructions

• Maximum core operating frequency of 120MHz

Onboard LCD graphics control module

• TouchStone• Larger screens

Tamper detection SecurityFreescale supplies code for majority of our functionality

• Reduces learning curve.

5.7” TOUCHSTONE Future TechnologyLCD: NL6448BC18-01 TWR-PIM-41WVGA Display KitTouchStone interface allows K70 to drive bigger screens

LOW-VOLTAGE3-PHASE MOTOR CONTROL

TWR-MC-LV3PHThree-phase Brushless DC (BLDC)Permanent Magnet Synchronous Motor (PMSM)Power supply voltage input 12-24VDC, extended up to 50VDCOutput current up to 8 amps

MEDIAL DEVELOPMENT MODULE

TWR-MCF51MMCan operate as a stand alone debugging toolRequired for the MED-SPO2

BLUETOOTH CONNECTIVITY

TWRPI-BLE-DEMOConnects onto the K70 BoardDiscovery

• Potential connectivity to mobile device

• Potential Bluetooth pulse oximeter

PULSE OXIMETERThis external device will allow for an EMT to monitor a patient’s Blood Oxygen level as well as their pulse. The Pulse Oximeter chosen for this prototype will be the Nellcor DS-100A Reusable Finger Clip. This device will interface with the Freescale MED-SPO2 development board via a DB9 connection. The MED-SPO2 is a MOD that can be attached to the K-70 tower to allow the data being created by the Pulse Oximeter to be displayed on the screen of the K-70.

This particular Pulse Oximeter has been chosen because there is clear documentation on how to interface it with the Freescale hardware we will be using for the control system.

PULSE OXIMETER (CONT.)

PULSE OXIMETER (CONT.)

OTHER COMPONENTSELAPSED TIME METER

Item Hour Meter

Type LCD

Time Range (Hours) 0 to 99,999

Bezel Face (In.) 2.12 x 1.25

Bezel Face Type 2-Hole Rectangular

Voltage 4.5 to 28VDC

Display Units Hours and Tenths

Depth (In.) 0.51

Length (In.) 1.22

Width (In.) 2.12

Ambient Temp. Range (F) -22 a 149

Material of Construction ABS

Reset Type Remote Signal

Fits 1.45"x0.95"

Mounting Method Flange

Terminal Type Spade

OTHER COMPONENTSTUBING MATERIAL

Item I.D. (in) O.D. (in) Wall Thickness (in)

Minimum Bend Radius (in)

Max Working Pressure (psi)

Air Tubing 1/8 3/16 1/32 1/2 30

Air Tubing 3/8 5/8 1/8 1-1/8 40

POWER SYSTEM

POWER FLOW

TEKKEON MP3450I • 12V, 5V Li-Ion

• 60 Wh

• < 1 lb.

• 3.3" x 6.8" x 0.9" (20.2 in3)

• Built in charging port, prevents overcharging

• Comes with 90-240VAC charger, can also be charged with 9-24VDC

• Low battery audible alert

• Price: $200, inc. tax & shipping

• Operating temps: -10°C to 60°C

• Charging temps: 0°C to 45°C

• Capacity reduces to 70% after 300 charge/discharge cycles

FEASIBILITY - POWER ANALYSIS

Current (A) Voltage (V) Power (W)

Pump* 3.8 12 22.8

MCU (K70P256M120SF3) 0.3 3.8 1.14

NEC 4.3" LCD (NL4827HC19-05B)

0.2764 5 1.382

Total 25.322

Battery Voltage (V) 12

Battery Capacity (Ah) 5

Battery Capacity (Wh) 60

Expected Battery Life (Hours) 2.37

*Assumes pump is running at 50% duty cycle

FEASIBILITY - BATTERY LIFETIME

Battery capacity (Wh) 60

Power draw (Wh) 25.322

Battery capacity after 300 charge cycles 70%

Number of charge cycles 550

New expected battery life (Hours) 1.07

Average number of uses per week* 5

Battery lifetime (years) 2.12*Estimated number of uses per week

THERMAL ANALYSISGoal: Ensure styrene shell won’t melt during operationPrimary Thermal Loads

• Pump Motor (20 W)• Battery (5 W)• MCU (5 W)• Total with FOS = 2 (60 W)

Assumptions• Natural Convection (5 W/m2)• Neglect Radiation • Uniform Distribution of Heat

Generation• Simplified Geometry and

Removal of Accessories• 300 K Bulk Temperature

RESULTS

TEST PLANS FOR MCU AND MODULEPhase 1: Model View Control architecture

MCUThe K70 will be the Model and View. The modules are controls.

• Create “test” inputs.• If a new mode is selected, it would poll the selected settings.• Passes instructions to the other modules, like the Motor controller to change the

motor signal.Model:

• Model should be quick to process all the information• Test Inputs should be responsible and almost instantaneous due to high risk.

View: • Create display for how all the information pass through the switches and knobs.• Change in Setting during operation:

• If change in setting, the display will reflect this action.• Change in mode:

• If different mode was selected, it would display a set of settings specifically for the setting.

SCREEN TEST PLANMajority of the View portion of the MVC architecture.

• Follow MCU tutorials to obtain basic communication with the LCD.

• Create Simple GUI• Create Buttons• Create animation.

Responsive stress test: • Send numerous redraw instructions to force screen to refresh

as quickly as possible. If user were to spam inputs.• Calculate the average response rate.

3 PHASE MOTOR CONTROL TEST PLANMajority of the Control portion of the MVC architecture

• Test constant Voltage output.• Send constant voltage• Measure the voltage across the motor control pins over time

• Test rising voltage out• Send raising voltage command• Measure the voltage across the motor control pins over time

• Test pulse voltage out• Send pulse voltage command• Measure the voltage across the motor control over time

• Test Sine voltage out• Send a wave of voltage command• Measure the voltage across the motor control over time

• Stress test• Send series of various output patters, then quickly cut power to zero, simulating

emergency cut off• Measure the voltage across the motor control over time.

POWER SYSTEM TESTING

Specifications Tested

Tests to be run

1. Battery life - Determine how long the battery can operate the pump for before the battery shuts down at room temperature. Repeat test with temperatures of -20° C.

2. Input voltages - Ensure the battery can be charged with both 120V AC and with a range of DC voltages.

3. Output voltages - Ensure the battery can provide both 5V to the MCU and 12V to the pump for the duration of it’s life.

Test Spec Description Critical Value Nominal Value

S6 Battery must be able to be charged with a range of voltages

12 to 24 V 6 to 24 V

S7 Battery must output a voltage of 12V to power the pump and 5V to power the MCU

11 to 13V and 5V

12V and 5V

S8 Battery must power the unit for at least 1 hour >1 hour >2 hours

S15 Battery must be able to operate in all temperature situations

<0° C <-20° C

USER INTERFACE

13 PRINCIPLES OF DISPLAY DESIGN1. Make displays legible (or audible) 2. Avoid absolute judgment limits3. Top-down processing4. Redundancy gain5. Discriminability6. Pictorial Realism 7. Moving Part (compatibility)8. Information access cost9. Proximity Compatibility10. Multiple resources11. Predictive aiding12. Knowledge in the world13. Consistency

Perceptual Principles

Principles based on Attention

Memory Principles

Mental Model Principles

PROBLEMSMake legible displays-readability of scales and settings

Avoid absolute judgment-ranges of knobs

Redundancy-usability for user

Proximity Compatibility-location of user controls

Top-down processing- Assimilating knob sizes with functionality

NEW DESIGN PRINCIPLESPrinciple of pictorial realism

• Battery charge displayed as symbol for battery• Heart rate indicated by heart symbol• Adding more symbols to redundantly display realism

Principle of moving part• Any loaded data will mimic real movement and typical

psychological movements in humans

USER CONTROLS- SPEAKER

CUI Inc.- CDMG16008-03-ND

USER CONTROLS- SETTINGS SWITCHES

TE Connectivity-SWITCH KNOB STRGHT 0.76" W/SPIN   

Kilo International- KNOB BLK GLOSS.625"DIA.125"SHAFT   

Kilo International- KNOB BLK MATTE.50"DIA 6MM SHAFT

SWITCHES

Kilo International- KNOB BLK MATTE.50"DIA .125"SHAFT

Grayhill Inc.- SWITCH PUSH SPST-NC 1A 115V

NKK Switches- SWITCH PUSHBUTTON DPDT 3A 125V

TE Connectivity- SWITCH ROCKER SPST 20A 125V

Manual Switch Mode Switch

Power Switch Reset Switch

USER INTERFACE TEST PLANSObjective: how inherent it is to use; ease of useSubjects: RIT ambulance, doctors from RIT health center, ski patrollersProcedure:1. design a mock up of user interface using actual user controls2. design a set of tasks for the subjects to complete that simulate situation encountered while utilizing ventilator3. record data: tasks performed correctly, general observations3. perform statistical analysis on data collected for percentages of subjects that complete tasks correctly

PLASTIC SHEETING

• Strong• Waterproof• Connections (screws, bolts, etc.) easily attached• Cost Effective

• Between $6-$40 for 2880 square inches.

• Adjustable / Easily Worked With• When heated, becomes extremely flexible and can be bent to

specified angles. (Vaccu-form, manual shaping)• When cooled, retains shape and strength.

BOMItem Needed for? Manufacturer Quantity Price/each Lead Time Status

Li-Ion battery Powering device Tekkeon 1 $172.00 7-10 daysCar charger Charging battery in vehicle Tekkeon 1 $8.00 7- 10 daysBarrel Connector (PP3-002A) Connecting battery to outside casing CUI Inc 1 $1.36 5-7 daysBarrel Connector (PJ-006AA) Connecting battery to outside casing CUI Inc 1 $1.49 5-7 days

1/8" ID Tygon Tubing (5554K11) Air Tubing Mcmaster 1 $9.00 5-7 days3/8" ID Tygon Tubing (5554K17) Air Tubing Mcmaster 1 $20.60 5-7 daysENM Hour Meter Elasped Time Meter Grainger 1 $33.25 5-7 daysAir Pump (T1-1HD-12-1NEA) Moving Air Parker 1 $297.00 <25 days long lead time3/8" - 1/8" Tee Fitting (5116K401) Tube connections Mcmaster 1 Pack $5.57 5-7 days3/8" 90 Fitting (2974K161) Tube connections Mcmaster 1 Pack $6.05 5-7 days3/8" Straight Fitting (2974K133) Tube connections Mcmaster 1 Pack $5.53 5-7 days10-24 x 1/2" Screws (90273A242) Mounting Mcmaster 1 Pack $6.02 5-7 days not determined10-24 x 1 1/2" Screws (90273A251 ) Mounting Mcmaster 1 Pack $6.89 5-7 days not determined3/8" x 12" x 24" PVC (8747K127) Baseplate Mcmaster 1 $23.10 5-7 days mechanical1" x 2" x 12" Delrin (8662K63) Machined Adapters Mcmaster 1 $20.65 5-7 days

AWM2300V Mass Flow Senson Flow control Honeywell 1 $107.82 5-7 daysNPC-1210-005-A-1-L Pressure Monitor feedback pressure GE M&C / NovaSensor 1 $34.33 on-orderNellcor DS-100A Pulse Oximeter Measure Pulse and Blood/Oxygen Levels Nellcor 1 $60.00 5-7 days

Speaker-CDMG16008-03-ND user interface/ warning alarms CUI Inc. 1 $2.51 5-7 daysSettings KnobsSWITCH KNOB STRGHT 0.76" user interface TE Connectivity 3 $2.96 5-7 daysKNOB BLK user interface Kilo Industries 3 $6.98 5-7 daysKNOB BLK MATTE.50"DIA 6MM user interface Kilo industries 3 $6.30 5-7 daysMode Switch-KNOB BLK user interface Kilo Industries 1 $8.57 5-7 daysReset button-SWITCH PUSH SPST- user interface Grayhill Inc. 1 $3.21 5-7 daysManual Button-SWITCH user interface NKK Switches 1 $32.73 5-7 daysPower Switch- SWITCH ROCKER user interface TE Connectivity 1 $3.98 5-7 days

ELECTRICAL PARTS

MECHANICAL PARTS

SENSORS

USER INTERFACE

Item Needed for? Manufacturer Quantity Price/each Lead Time Status

LCD Screen with Touchstone GUI Future Technologies 1 $312.23 5-7 days PricingTWR-K70F120M-KIT MCU Tower kit Freescale 1 $179.00 5-7 days PricingTWR-MC-LV3PH Low-Voltage, 3-Phase Motor Control Freescale 1 $159.00 5-7 days PricingTWRPI-BLE-DEMO Bluetooth Module Freescale 1 $149.00 5-7 days PricingTWR-MCF51MM Medial Development Module Freescale 1 $59.00 5-7 days PricingMED-SPO2 Pulse Oximeter Freescale 1 $59.00 5-7 days PricingTWR-PROTO ProtoBoard Freescale 1 $14.99 5-7 days Pricing

Sheets of styrene Build Housing Curbell (RIT) 1- 4'x3' $21.60 -Resin bond assemble housing and models TAP Plastics 1- 8oz. $8.00 -blue foam models DOW 6 sheets $10.00 -yellow foam models DOW 15"x11"x7" $70.00 -zippers tote Joann Fabric 1 $10.88fabric tote Joann Fabric 2 yds $30.00velcrow tote Joann Fabric 1 $5.00strap tote Lowepro 1 $15.00 5-7 days

Sub Total $2,021.08Sponsorship -$99.71Total $1,921.37

COMPUTER PARTS

PACKAGING

BOM

RISK ASSESSMENT

Risk Item Effect Cause

Likelihood

Severity

Importance Action to Minimize Risk Owner

Date of Completion

1over heating

damaged components; total system failure

electronic components; environment; mis-use; upkeep

2 3 6 basic thermal analysis; provide safety cautions Chris week 9- MSD1

2Integration of hardware and software together

non-workable prototype

using devices from different companies that don't function together

1 2 2

plan and read specs on all technical components; test components compatability Derek week 9- MSD1

3inputs do not match outputs

failing to meet FDA requirements

programing and calibration errors

2 1 2quality testing of design

Chris/ Kennedy MSD2

4 oversight on PCB requirement

system not function; not fitting in desired volume

lack of knowledge into how many switches need

2 3 6schematic planning Dan MSD2-1

5 mountability of components design change

lack of space; components not coinsiding with desired layout

2 2 4layout planning Melissa MSD2- 6

6screen not compatible with MCU

downgrade screen size software failure

2 2 4using a smaller screen Kennedy MSD2- 1

7battery integration in system

underperforming; fire hazard

battery failure; not meeting engineering specs

1 2 2check with experts on how to manage battery functionality Eric MSD2

8

inaccurate readout from mass flow sensor check failure interpolation was not valid

1 2 2

calibrate during testing Ryan MSD2- 2

9 Durability failure

components breaking; failure of system

components malfunctioning during usage

2 3 6perform vibration testing; perform environmental testing Ryan MSD2

10 human computer interface failure operator confusion cuttered interface

2 3 6perform usability analysis; 13 principles of display design; iterate to next MSD group

Marie/ Dave week 2- MSD2

Tech Concerns

11

Over budget

cannot build a working prototype that looks like vision

necessary parts more expensive than budget leaving not enough money for aesthetics

3 3 9request funding from suppliers Marie week 9- MSD1

12uncoordinated team schedule

late completetion of deliverables; lack of team unity

conflicting schedules and desired meeting times 2 3 6

discussion at beginning of MSD2 of schedules Dan

MSD2- 1

13 late delivery of parts

modification to design schedule; miss deadlines

lack of planning; problems with vendors

1 2 2order parts ahead of time; expedite when necessary Melissa week 5- MSD2

14

Remaining substantially equivalent with current design

design that is not capable with FDA approval

changing the current design drastically beyond the FDA approved design

1 3 3make sure any major changes to design are validated with client Chris week 9- MSD1

15conflicts with customer

more budget needed; change design schedule

change in market; change in design plans; change in prospective

2 2 4

team members should maintain open communication with client; relevant market research Dave

16product does not match consumer needs not profitable not meeting trends

2 3 6

benchmarking research Roberto

Project Concerns

Severity Scale: 1 = Not Severe 2 = Moderately Severe 3 = Very SevereLikelihood Scale: 1 = Not Likely 2 = Conceivable 3 = Very LikelyImportance= likelihood* severity

PROJECT FUTUREFeatures Mediresp III Worst Case Nominal Best Case 2015

volume control x x xBPM x x x

peak flow x x xair assist x x x

high pressure alarm x x xDC input 6V-16V 9V-24V 9V-24V

DC internal battery x x xbattery operation time 2-hr 1-hr 2-hr +

elapsed time meter x x xpump life x x x

2nd pressure relief x x xtime to back-up x x x

blood oxygen level x xCO2 x

Operation temperature 0-30 deg. C wider rangedimensions 11inx13inx7in >current ~500 cubic in.

weight ~23lbs. >17lbs. 5-10lbs.drop height ~ 1m 1mscreen color analog b/w color color colorscreen size 1in x 2.5in. 3.5in 4.3in 6-7in >8in.

Mediresp IIII

Features Mediresp III Worst Case Nominal Best Case 2015

BPMblood oxygen level

pulsepressure level

mode of operationBPM setting

flowCPR count

charge LED no indicatordefault charge

LED's via windowdisplay on

screen

display on screen with

graphic

CPRbreaths set

with dial

monitor compressio

ns beat countCPR audio

instructionsAudio and

pictoral

CPAP x

Alarms LED and beepLED and

beep LED and beepmessage on

screenaudio/ visual

display

shape square square panel deisgn

form fitted w/ custom

mount geometricmaterial metal sheet metal styrene styrene composite

Data no storagedisplayed so can

be recorded SD or USB

internal storage w/ Bluetooth

communication

all values shown with moving displays and animations

shown with controls and incremental

displays

only values shown on

screen all values shownall on same

screen

having option to customize

values shown on screen

Hous

ing

Mediresp IIII

Disp

lays

Setti

ngs

not shown cycle screenall values

shown

MEDIRESP IIII- 2015

QUESTIONS