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Designed to monitor and alarm for ethylene (C2H4) levels in ambient air near agricultural sites, food & fruit storage, and controlled atmosphere storage, etc. The ethylene sensor is of the disposable electrochemical type with an expected life of between 3-4 years. The sensor needs no warm up time and is ready to go as soon as the monitor is turned on.

Model 596DR2 has two remote sensors that are electrically connected to the main cabinet.

Unit of Measure


Method of Detection

N/A Disposable electrochemical cell (3-4 years)

Ranges Available

N/A 0-20 PPM standard



Accuracy & Repeatability

N/A ±1% of full scale or 2 PPM, which ever is higher


N/A Less than 1% of full scale or 2 PPM per week, whichever is greater

Response Time (T-90)

N/A Less than 15 seconds to 90% step change

Ambient Temperature Range

N/A 32 to 120°F (0 to 40°C), may be operated at lower temperature with auxiliary heater


N/A ±1% of full scale or 1 PPM, which ever is higher

Size & Weight

N/A 14" H x 12" W x 8" D (35.6 x 30.5 x 20.3 cm) @ 18 lbs. (8.2 kg)


N/A 115 VAC, 60 Hz 220 VAC, 50 Hz

Output Options

N/A 0-1 VDC 4-20 mA


N/A Optional - Audible alarm with 'Acknowledge' button Optional - Dual high alarm light and relays (SPDT - 5A@ 230 VAC)



    Designed to monitor and alarm for ethylene (C2H4) levels in ambient air near industrial sites, manufacturing facilities, combustion processes, etc.



  • Standard electrochemical cell
  • Fast response to the presence of ethylene (C2H4) in the air
  • Instant warm-up, no wait
  • Bright digital readout - no reading interpretation errors
  • Optional - Built in 'Sonalert' audible alarm
  • Optional - Two levels of alarm: 'Alert' and 'Alarm,' audible alarm can be silenced with 'Acknowledge' button
  • Easy use and calibrate
  • Easy to maintain modular layout
  • 4-20mA output signal for recording
  • NEMA 12 fiberglass enclosure is standard



  • 'Fail Safe' alarms available
  • Strobe light
  • NEMA 4 or 4X enclosures
  • Cold weather package for operation to -5°F (-20°C)

Unique Applications


    All Nova analyzers are built using proven technologies and techniques. If this product does not suit your application, please contact Nova. In many cases, we are able to build an analyzer specific to your needs.

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