Teledyne Mixchek - Helium / Oxygen mixture analyzer - Manual (Page 20)

Setup MIXCHEK
Teledyne Analytical Instruments 20
2.5 Battery Test
(Portable Model Only)
A battery test function is available from the front panel and should
be used prior to using the instrument. To test the batteries, turn the OFF-
ON switch to the BATT TEST position. The Oxygen display will
indicate the state of charge on the batteries. A fresh set of batteries will
show a reading of 120. If the reading is 100 or below, you must change
the batteries to maintain the accuracy of this instrument.
2.6 Battery Installation (Portable Model Only)
Before using the portable model for the first time, 4 C-cell batteries
must be installed.
Note: Do not use rechargeable batteries. This type of battery
does not provide the required voltage to power the
instrument.
To install the batteries, remove the 2 screws securing the battery
compartment lid. Lift out the compartment cover and install the batteries
noting the polarity indicated on the label molded into the battery holder.
See Figure 2-6.
When replacing batteries, for best results use only long-life alkaline
batteries. The monitor can be run for up to 150 hours on a fresh set of
batteries.