Headspace oxygen analyzer

• Protable, Battery operated
• Range 0.1 to 100% oxygen
• Long-life sensor
• Internal sampling pump
• Economically priced
• Inexpresive to operate & maintaiin
• Calibrates with room air

Versatile, rugged design
The Model 901 is a battery-operated, portable oxygen analyzer used for the measurement of residual oxygen in gas-flushed (CAP/MAP) food packages. This hand-held unit can be used by non-technical personnel where you need it, in the lab or at the packaging line, or it can be easily transported to other locations. The Model 901 is powered by Ni-Cad rechargeable batteries, with typically 8 hours of operation before recharging is required.

Food applications
The Model 901 design has proven itself in hundreds of installations for food applications such as meats, fresh produce, pasta, nuts, snackfoods, dairy products and coffee. The sensor is unaffected by high levels of background gases such as nitrogen or carbon dioxide. The Model 901 can also be used for applications where the oxygen level is very high (50 to 100%), without overloading the sensor. It is unaffected by trace hydrocarbons or high levels of CO2, which can poison other types of sensors.

Easy sampling & analysis
The Model 901 sample probe is tipped with a particulate filter and luer fit syringe needle with side-port holes to prevent plugging. Sample is drawn through the probe and turbing and then to oxygen sensor when the pump is turned on. The pump is electronically timed to draw in the precise amount of sample required for the analysis, and then turns itself off after the pre-set sampling time (5 to 10 seconds). Th eoxygen concentration is read on the display.

Low cost
The Model 901 is cost effective, reliable alternative to other analyzers. Not only is the initial costs are lower as well. When service is required, units are generally repaired and returned the same day as received to minimize down-time.

Principle of operation
The Model 901 uses a syringe needle sampling assembly to pierce the package and draw a sample into the analyzer sensor for oxygen measurement. The sensor signal is converted to per-cent centration and displayed on the LCD screen The oxygen sensor used in the 901 was specifically designed for gas-flushed packaging measurements. the sensor is a proprietary electrochemical design which is inexpensive, quick to respond, requires minimal power and has excellent zero and span stability. Unlike zirconia sensors which are heated to 500-600”ĘC, the 901 sensor will not crack when exposed to liquid water drolets and is unaffected by trace hydrocarbon gases.

Technical specifications

• Range: 0.1 to 100 % Oxygen
• Resolution: 0.1% Oxygen
• Sensor: Electrochemical Cell
• Sample pump: Internal, with adjustable timer
• Sampling assembly: Probe with male luer connectioon for side-port needle, coiled PTFE tubing
• Power supply: Four "AA" rechargeable batteries; auto shut-off after 45 minutes idle. Charger included
• Battery life: Eight hours before re-charging
• Size: 8 x 4 x 1.8 in. (200 x 100 x 40 mm)
• Weight: 1 lb. (450 gms)

Optional equipment
Model CS-100 Container Sampler. This assembly connects to the 901 sample tubing and is used to pierce cans or other containers with a heavy duty needle for headspace oxygen measurement with the 901.

External Battery Charger for charging spare set of batteries.

Nylon Carrying Case with extra pocket to hold accessories. Padded for extra protection.