From the manufacturer:
The Alpha Omega Instruments Series 2000 Percent Oxygen Analyzer is a microprocessor controlled instrument that can be configured with either one or three percent oxygen ranges. The instrument is powered by 115/230 VAC, 50-60Hz. Oxygen values are displayed on a 10.2 mm (0.4") high 4-1/2 digit liquid crystal display (LCD). The oxygen sensor is mounted in a PVC housing that contains 1/4" gas inlet and outlet compression fittings. The sensor housing is located on the rear panel of the electronics enclosure.
The front panel of the Series 2000 Percent Oxygen Analyzer contains five switches that provide access to the analyzer's settings. The instrument is equipped with three oxygen alarm relays and one status alarm relay.
In addition to the four alarm contacts, the Series 2000 Percent Oxygen Analyzer has a built-in audible alarm and three red LED's for visual indication of an oxygen alarm condition. The audible alarm may be manually canceled at anytime. If the audible alarm is canceled, and the alarm event continues, indications of this condition will still be available through the front panel LED's and relay contacts.
SAMPLE GAS CHARACTERISTICS:
Flow Rate: 1.0 to 2.0 SCFH (0.5 to 1.0 liter/min)
Sample Gas Temperature: 32° to 104° F (0° to 40°C)
Sample Gas Pressure Limits: 0.1 to 1.5 psig (0.007 to 0.1 kg/cm2)
The oxygen analyzer powers on and is in good cosmetic condition. The display screen is bright, clear and easy to read. We do not have the ability to test this unit further. It MAY need to be calibrated. Please see photos for details. What you see pictured is exactly what you will receive. Returns will NOT be accepted.
Please note that shipping costs calculated using the paypal "buy it now" button are for buyers in the continental US ONLY. Buyers in Alaska, Hawaii, and all other countries will be invoiced for additional shipping costs. Please contact the seller for a shipping quote and any other questions you may have. Thank you.