Electrode Information - LaMotte DO 6 PLUS Instructions Manual

2.7

Electrode Information

The DO 6 PLUS includes a galvanic DO electrode
which does not require warm-up. It generates
a millivolt signal proportional to the amount of
oxygen in the solution.
The probe has a dual cable; a BNC connector
for DO measurement and a phono jack plug
for temperature. The sensor utilizes a cathode,
anode, and electrolyte that are separated from
the sample by an oxygen permeable membrane.
The membrane is pre-assembled and f xed to a
detachable cap. The pre-assembled cap design
allows simple replacement and fast conditioning.
The probe is lightweight and includes a built-in
temperature sensor. The epoxy body of the probe
is 12mm in diameter while the detachable Noryl
cap is 16mm in diameter. The compact sensing
area reduces air entrapment resulting in quick,
accurate, and stable readings.
The pre-assembled cap must be completely
submersed in the solution to obtain an accurate
reading. Provide simple stirring for best results—
ideally achieve a minimum water f ow rate of 2 inch/second on the
membrane. The probe is not recommended for use in samples outside of
the range of 0 to 50 °C.
Shaking the probe will aid in removing bubbles, if needed, before taking
a reading. When calibrating in air, shake to remove water from the
membrane.
The membrane is thin and can not be repaired if it is damaged. Use care
to protect from scratches, abrasions, or contact with solids. For best
results keep the membrane clean by rinsing it after daily use. See Section
6 – Probe Maintenance.
10
12 mm
Detachable
Pre-membraned Cap
(Probe Sensing Area)
16 mm