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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.

Unit of Measure
Items
500DR1

Continuous Ethylene (C2H4) Alarm Monitor, 1 remote sensor

500 Generic

Continuous Ethylene (C2H4) Alarm Monitor, diffusion sensor

500DR2

Continuous Ethylene (C2H4) Alarm Monitor, 2 remote sensors

500 Generic

Continuous Ethylene (C2H4) Alarm Monitor, built-in pump
Method of Detection N/A Disposable electrochemical cell N/A Disposable electrochemical cell N/A Disposable electrochemical cell (3-4 years) N/A Disposable electrochemical cell (3-4 years)
Ranges Available N/A 0-20 PPM standard
Resolution N/A 1 PPM
Accuracy & Repeatability N/A ±1% of full scale or 1 PPM, whichever is higher N/A ±1% of full scale or 1 PPM, whichever is higher N/A ±1% of full scale or 2 PPM, which ever is higher N/A ±1% of full scale or 2 PPM, which ever is higher
Drift N/A Less than 1% of full scale or 2 PPM per week, whichever is greater N/A Less than 1% of full scale or 2 PPM per week, whichever is greater N/A Less than 1% of full scale or 2 PPM per week, whichever is greater N/A ±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
Linearity 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)
Power N/A 115 VAC, 60 Hz 220 VAC, 50 Hz
Output Options N/A 0-1 VDC 4-20 mA
Alarms N/A Optional - Dual high Ethylene (C2H4) alarm light and relays (SPDT - 5A@ 230 VAC) Optional: Audible alarm with 'Acknowledge' button N/A N/A Optional - Audible alarm with 'Acknowledge' button Optional - Dual high alarm light and relays (SPDT - 5A@ 230 VAC) N/A Optional - Audible alarm with 'Acknowledge' button Optional - Dual high alarm light and relays (SPDT - 5A@ 230 VAC)
Options N/A
    Cold weather package for operation to -5°F (-20°C) Fail Safe' alarms available Low flow alarm on 540P NEMA 4X enclosure (WP) Strobe light
N/A Cold weather package for operation to -5°F (-20°C) Fail Safe' alarms available Low flow alarm on 540P NEMA 4X enclosure (WP) Strobe light N/A
    Cold weather package for operation to -5°F (-20°C) Fail Safe' alarms available Low flow alarm on 540P NEMA 4X enclosure (WP) Strobe light
N/A Cold weather package for operation to -5°F (-20°C) Fail Safe' alarms available Low flow alarm NEMA 4X enclosure (WP) Strobe light
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