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Carbon Dioxide Monitor
Features of the Guardian plus CO2 Monitor
Carbon Dioxide monitor
  • Continuous monitoring of carbon dioxide concentrations
  • Long term stablity - infrequent calibration
  • Wide selection of sensors to match the range and accuracy of your application
     - 0 to 3000 ppm ~ 0 - 100%
  • Low maintenance
  • Users settable Audible and visual alarms and relays signals.
  • East to read 4 digit LCD display
  • Built in pump
  • ISO9002
  • 110V /230V AC power
  • pdf datasheet

 

Introduction
The Guardian gas monitor uses a special non dispersive dual wavelength infra red sensor unit which has no moving parts. This ensures the long term stability of the instrument without the need for frequent recalibration. The gas is metered into the measuring system with a built in sample pump. Remote sampling can be performed by connecting a 5 mm diam sample tube to the gas inlet. This tube can be up to 90 feet long. The instrument is enclosed inside a tough plastic enclosure rated IP54 against the ingress of water and dust further increasing its long term reliability. The two independent alarm levels are set on the front panel and other options for analog output, alarm designation, buzzer and flow indication are set on on a dipswitch.


Applications of CO2 monitoring

Horticulture
Food processing
Brewing
Personnel Safety
Combustion processes
Heating and ventilation
Related
This configuration also available as a carbon monoxide detector and as a methane monitor
Other Oxygen and CO2 instruments
   
Specifications
Measuring ranges Carbon Dioxide 0 -3000 ppm, 0 - 1%, 0 - 3%, 0 - 5%, 0- 10%, 0 - 30%, 0 - 100%
Accuracy +/- 2% of the range
Stability +/- 2% of the range over 12 months
Repeatability
at zero +/- 0.3%
at span +/- 1.5 %
Response time T90 = 30 secs from sample inlet
Operating temperature 0 - 40 degs C
Warm up time operational 3 mins
Humidity unaffected 0 - 100% RH non condensing
Alarms - modes set up with a dipswitch inside the unit 2 alarms setting each with high/low
relay contacts for each alarm norm/latch
Buzzer for one or both alarms
Low flow alarm/warning
Bit Switch Parameters :
Analogue output 4 - 20 mA or 0 - 20 mA
Alarm settings 1 high/low 2 high/low
Alarm mode normal or latch output
Buzzer on both or on 2 only
Low flow warning warning or fault indicator
Display 4 digit LCD and 4 LEDs for alarms and flow
Relay contacts 8 A 24 DC
Pump 1 L/min
Power 110/220 VAC
Weight 2.5 kg
Dimensions 267 x 258 x 148
Enclosure IP54
 
Ordering Information
Model Description Part No Price view shopping cart
GuardCO2 Specify desired range for CO2 xxxx-xxxx CO2xxxx-xxxxx $1950.00 Add item to shopping cart
CO2RS232 RS232 card for above GUARDCO2RS232 $325.00

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Topac Inc 231 CJC Highway, Cohasset MA 02025 USA
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