MODEL 901 OPERATING INSTRUCTIONS
GENERAL DESCRIPTION
The Quantek Model 901 is a battery-operated, portable oxygen analyzer used for the
measurement of residual oxygen in gas-flushed (CAP/MAP) food packages. The Model 901
is powered by Ni-Cad rechargeable batteries, with typically 8 hours of operation before
recharging is required.
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 CO
2
,
which can poison other types of sensors.
Components which make up the Model 901 include the case, oxygen sensor, LCD readout,
internal sampling pump, one main circuit board, battery compartment, NiCad rechargeable
batteries, battery charger module and sampling probe. The 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 tubing and then to the 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, which is adjustable from 1 to
10 seconds. The oxygen concentration is read on the display.
The operating controls and adjustments include power switch, pump switch, span, zero and
pump time adjustments.
PRECAUTIONS
Follow these guidelines to prevent damage to the unit.
1. Do not suck liquids into the unit through the needle.
2. Do not plug the unit into the charger if alkaline batteries are installed.
3. Do not immerse in water or spray water on the unit
4. Do not drop the unit
Coffee Laboratory 589 Rappahannock Drive White Stone Va 22578 TEL (804) 435-5522
www.coffeelabequipment.com
