Zach Andrews - Eric Barr – Brandon White. Client Dr. Dan Guyer Steve Marquie.
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Transcript of Zach Andrews - Eric Barr – Brandon White. Client Dr. Dan Guyer Steve Marquie.
BackgroundThree Master-Bilt V39LX094XX commercial
walk-in refrigeration units Used to store research material for MSU
faculty, graduate, and undergraduate studiesNo way to remotely monitor if any
malfunction occursValuable research material lost in the past
due to compressor failure
Problem StatementNecessity to alert client of malfunctions and
constantly record internal environmental data
Objective is to research, design, and implement a system that does this
Research ObjectivesSystem must monitor temperature and relative humiditySystem must allow for real-time monitor, display, and alert
when system failsSystem must meet/exceed these design requirements
Temperature accuracy: Minimum +/- 0.5°F Temperature resolution: Minimum +/- 1°F Humidity accuracy: Minimum +/- 0.5% Humidity resolution: Minimum +/- 1% System must be able to log measurement data Must be able to record data in time intervals as small as 1 minute
apartResearch best-priced and most highly functional alternatives
for monitoring unitsFormulate block diagram to compare all alternatives prior to
selection
Option 1Sensatronic's Environmental Sensing
Sensors: Sensatronic’s Temperature and Relative Humidity Probe Air Temp Accuracy: ±5oC Air Temp Measurement range: -40o to +85o
RH Accuracy: ±2%RH RH Measurement Range: 10% to 90%
Data Logger: Sensatronic’s Senturion Rack- Mount Environmental Monitor User friendly Rugged Multiple inputs Remote Alarms LCD Readout Web Based operation
Option 1 Cost
Item Price Quantity Total
Sensatronic Senturion Rack-Mount Environmental Monitor $949.00 1 $949.00
External Temp/RH Probe w/ 50ft. cable $185.90 3 $557.70
Power Presence Probe w/ 50ft. cable $139.70 1 $139.70
UPS Battery Backup (Available through Client) $0.00 1 $0.00
Automated Phone Dialer $218.90 1 $218.90
Magnetic Door Sensor w/50ft. cable $68.20 0 $0.00
Total $1865.30
Option 2Campbell Scientific Sensor: Campbell Scientific HMP45C (Temp and RH Probe)
Rugged Air Temp Accuracy: ±.5oC Air Temp Measurement range: -39.2o to +60oC RH Accuracy: at 20 oC ±1%RH RH Measurement Range: 0.8 to 100%
Data Logger: Campbell Scientific CR1000 Rugged Multiple inputs Remote alarms Available through client
RTMCPRO software: Remote monitoring via internet server Email alerts
Option 2 Cost
Item Price Quantity Total
HMP45C Temp and RH Probes $600 3 $1800
CR1000 Data Logger (Available through Client) $0 1 $0
RTMCPRO Software $435 1 $435
PC (Available through client) $0 1 $0
Total $2235
Option 3Omega Engineering, Inc.
Logger/Sensor: Omega OM-CP-RHTEMP101 Air Temp Accuracy: ±.5oC Air Temp Resolution: .1oC Air Temp Measurement range: -40 to +80oC RH Accuracy: at 25 oC ±2%RH RH Resolusion: 0.5% RH RH Measurement Range: 0 to 100% RH
Software: Sends alarms through e-mails or numerically coded phone call Syncs data from several logging inputs together Icon in software allows easy exportation to Microsoft Excel
spreadsheet
Option 3 Cost
Item Price Quantity Total OM-CP-RHTEMP101 $199.00 3 $597.00 OM-CP-IFC110 $99.00 1 $99.00 PC (Available through client) $0 1 $0 Total $696.00
Option 4ACR Systems, Inc.
Logger/Sensor: ACR Smartreader 2 Air Temp Accuracy: ±.2oC Air Temp Resolution: 1 oC Air Temp Measurement range: -40 to +70oC RH Accuracy: ±4%RH RH Resolution: 0.4% RH RH Measurement Range: 0 to 95% RH
Software: Trendreader 2 USB interface Capable of exporting to Excel
Option 4 Cost
Item Price Quantity Total ACR Smartreader 2 logger $860.00 1 $860.00 Remote Temp/RH probes $239.00 2 $478.00 Trendreader 2 software $240.00 1 $240.00 PC (Available through client) $0 1 $0 Total $1578.00
Decision Matrix
Chart 5. Component option decision matrix (Scoring (1-5) 5=Best 1=Worst) 0=N/A
C
ambe
ll S
cien
tifi
c
Sen
satr
onic
s S
entu
rion
Om
ega
Inst
rum
ents
AR
C
Total 37
59
34
22
Cost 4 4 5 4
Email Alarms 5 5 5 0
Phone Alarms 3 5 4 0
Visual/Audible Alarms 0 5 0 0
Power Presence Alarm 0 5 0 0
Remote Web Access 4 5 0 0
Computer Interface 4 5 3 3
Battery Backup 5 5 5 5
Expandability 4 5 2 2
Warranty 4 5 2 3
Delivery 1 5 5 2 User Friendly 3 5 3 3
DecisionAfter careful consideration and evaluation of
our fouroptions, we concluded that the Sensatronics
Senturion Environmental Rack Monitor was the best
hardware choice for our needs, with a score of 59 out of
60 possible points in our decision matrix.
SoftwareSoftware needed to complete necessary task
already included/installed with the Sensatronics unit.
Built-in web interface
Any firmware upgrades will be automatically uploaded to the unit over the net.
SoftwareAlerting system
Individual probe high/low thresholds limits
Multiple alarm/response capabilities
User phone dialing availability
User remote access to acknowledge alerts from web.
Budget of $3000
Chart 6. Installation Supply List
Item Quantity Price Total ¾” PVC conduit 42’ $0.94/10’ $3.95 ¾” PVC T connector 2 $2.97 $5.94 ¾” PVC LB connector 3 $2.98 $8.94 Silicone tube 1 $5.97 $5.97 1 ½” wood screws (logger mounting) 1 box of 25 $4.97 $4.97 1” self tapping metal screw 1 box of 50 $4.92 $4.92 Total $34.69
Item Price Quantity Total
Sensatronic Senturion Rack-Mount Environmental Monitor $949.00 1 $949.00
External Temp/RH Probe w/ 50ft. cable $185.90 3 $557.70
Power Presence Probe w/ 50ft. cable $139.70 1 $139.70
UPS Battery Backup (Available through Client) $0 1 $58.99
Automated Phone Dialer $218.90 1 $218.90
Magnetic Door Sensor w/50ft. cable $68.20 0 $0.00
Total $1865.30
Shielding DeviceConsists of a set of three adapters that
convert the conduit from ¾ “ to 2”. Then drilled holes at an angle to allow air to enter probe sensing environment from below but reduce effect from high airflow.
Tools and Equipment
Power drill w/bitsHand sawTape measureScrewdriverSilicone gunLadder
PVC conduitLBs and T
connectorsPVC cementScrewsSiliconeZip ties
Installation Schedule November 18: Built rack mount for unit
November 20: Tested and troubleshot Senturion monitor
November 22: Cut and pieced together conduit
December 5: Drilled holes in Units and glued together conduit; hooked up unit to probes
December 8: Secured conduit and wires with straps and screws
December, 9: Run phone line to annex for dialer
December 11-13: Program and test all devices to make everything reads and works properly
December 14-18: Make final system adjustments and complete
User ManualContents:
Quickstart guide for whole system Set up in step by step fashion
Manuals from both Senturion and United Security Products
Basic system dynamics and connectionsDevelop troubleshooting methods and suggestionsVendor contact list
SummarySystem allows client to monitor all conditions
specifiedAlert functions as requiredCost was minimized while maintaining respect for
functionalityUser-friendliness was also highly considered
Construction was done appropriately to maintain integrity of structures involved with system design
Manual will allow users to change settings easily if needed