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: ±5 o C Air Temp Measurement range: -40 o to +85 o 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

Option 2 Campbell Scientific Sensor: Campbell Scientific HMP45C (Temp and RH Probe) Rugged Air Temp Accuracy: ±.5 o C Air Temp Measurement range: o to +60 o C RH Accuracy: at 20 o C ±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 alerts

Option 2 Cost

Option 3 Omega Engineering, Inc. Logger/Sensor: Omega OM-CP-RHTEMP101 Air Temp Accuracy: ±.5 o C Air Temp Resolution:.1 o C Air Temp Measurement range: -40 to +80 o C RH Accuracy: at 25 o C ±2%RH RH Resolusion: 0.5% RH RH Measurement Range: 0 to 100% RH Software: Sends alarms through s 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

Option 4 ACR Systems, Inc. Logger/Sensor: ACR Smartreader 2 Air Temp Accuracy: ±.2 o C Air Temp Resolution: 1 o C Air Temp Measurement range: -40 to +70 o C 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

Decision Matrix

Decision After careful consideration and evaluation of our four options, 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.

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.

Budget of $3000

Isometric Diagram

Construction Diagram

Conduit Construction

System Connections Phone out Ethernet In 3 Probes Out AD-2001 Phone Dialer Senturion Monitor

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