• Fast response to ethylene (C2H4) presence with no warm-up time required.
• Bright digital readout for easy monitoring.
• Simple calibration and maintenance due to modular layout.
• 4-20mA output signal for recording purposes.
• Enclosed in a NEMA 12 dust-tight enclosure.

• Available in diffusion or pumped sampling configurations.
• Low flow alarm available on pumped sample models.
• Weather-proof enclosures (NEMA 4 & 4X) available.
• Alarm system includes relay contact, audible alarm with 'Acknowledge' button, and bright red strobe light for visibility.

Designed for monitoring ethylene levels in ambient air, particularly useful in agricultural sites, food and fruit storage, and controlled atmosphere storage.

• Zero calibration on N2.
• Span calibration using analyzed ethylene gas in N2.

The Nova 591 Series monitors continuously detect ethylene in ambient air using a disposable electrochemical sensor with a lifespan of 3-4 years. The sensor is operational immediately upon activation.

• Detection Method: Customer replaceable electrochemical sensor.
• Range: 0-20 PPM C2H4.
• Resolution: 1 PPM C2H4.
• Accuracy: Better than 1% of full scale.
• Drift: Less than 1% of full scale per week.
• Response Time: Less than 15 seconds to 90% step change.
• Temperature Range: 32° to 120°F (0° to 40°C), 0-90% non-condensing.
• Linearity: ± 1% of full scale.
• Size and Weight: 12" H x 10" W x 7" D @ 12lbs. (30 x 25 x 17 cm @ 5.4kg).
• Power: 115VAC 60Hz (220VAC 50Hz available).
• Output Options: 0-1VDC or 4-20mA.
• Alarms: Optional high/low alarm with SPDT contacts, audible alarm with reset button, and indicator light for each alarm level; optional low flow alarm and strobe light.

While built with proven technologies, the 596 Series is not suitable for many process or flue gas applications. Custom analyzers can be built for specific needs.

• 596D: One diffusion-type sensor in main cabinet.
• 596DR1: One remote diffusion sensor.
• 596DR2: Two remote diffusion sensors.
• 596DR3: Three remote diffusion sensors.
• 596DR4: Four remote diffusion sensors.
• 596P: Built-in sample pump for remote sampling.