380 likes | 576 Views
Refrigeration Montitoring System. Zach Andrews - Eric Barr – Brandon White. Client. Dr. Dan Guyer Steve Marquie. Background. Three Master- Bilt V39LX094XX commercial walk-in refrigeration units Used to store research material for MSU faculty, graduate, and undergraduate studies
E N D
Refrigeration Montitoring System Zach Andrews - Eric Barr – Brandon White
Client • Dr. Dan Guyer • Steve Marquie
Background • Three Master-Bilt V39LX094XX commercial walk-in refrigeration units • Used to store research material for MSU faculty, graduate, and undergraduate studies • No way to remotely monitor if any malfunction occurs • Valuable research material lost in the past due to compressor failure
Problem Statement • Necessity to alert client of malfunctions and constantly record internal environmental data • Objective is to research, design, and implement a system that does this
Project Assumptions • Remote access • Alerts • Data Log • User friendly
Research Objectives • System must monitor temperature and relative humidity • System must allow for real-time monitor, display, and alert when system fails • System 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 apart • Research best-priced and most highly functional alternatives for monitoring units • Formulate block diagram to compare all alternatives prior to selection
Option 1 Sensatronic'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’sSenturion Rack- Mount Environmental Monitor • User friendly • Rugged • Multiple inputs • Remote Alarms • LCD Readout • Web Based operation
Option 2 Campbell 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 20oC ±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 3 Omega 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 25oC ±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 4 ACR Systems, Inc. • Logger/Sensor: ACR Smartreader 2 • Air Temp Accuracy: ±.2oC • Air Temp Resolution: 1oC • 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
Decision After careful consideration and evaluation of our four options, we concluded that the SensatronicsSenturion 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.
Software • Software 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.
Software • Sensatronics Web Interface • User Page
Software • Sensatronics Web Interface • View Page
Software • Sensatronics Web Interface • Data Log
Software • Alerting system • Individual probe high/low thresholds limits • Multiple alarm/response capabilities • User phone dialing availability • User remote access to acknowledge alerts from web.
Software • Alerting system • Alert Page
Software • Alerting system • Alert options
Additional Requirements • UPS power supply.
AD-2001 Phone Dialer Phone out 3 Probes Out Ethernet In Senturion Monitor System Connections
Unit Mount • Assembled from 2”x 4” board
Shielding Device • Consists 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/bits • Hand saw • Tape measure • Screwdriver • Silicone gun • Ladder • PVC conduit • LBs and T connectors • PVC cement • Screws • Silicone • Zip ties
Vendor List • Sensatronics • United Security Products, Inc. • The Home Depot • Lowe’s • Haslett Ace Hardware
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 Manual • Contents: • Quickstart guide for whole system • Set up in step by step fashion • Manuals from both Senturion and United Security Products • Basic system dynamics and connections • Develop troubleshooting methods and suggestions • Vendor contact list
Summary • System allows client to monitor all conditions specified • Alert functions as required • Cost was minimized while maintaining respect for functionality • User-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