Nova-Tech DO 6+ - Manual (Page 12)

Instruction Manual DO 6+
- 6 -
2.7 Electrode Information
The DO 6+ includes a galvanic DO electrode
(93X233912) which doesn’t require warm-up. It
generates a millivolt signal proportional to the
amount of oxygen in the solution.
The electrode 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 for you and
fixed to a detachable cap. The pre-assembled
cap design allows simple replacement and fast
conditioning.
The probe is light weight and includes a built-in
temperature sensor. The epoxy body of the probe
is 12mm diameter while the detachable Noryl cap
is 16mm diameter. The compact sensing area
reduces air entrapment resulting in quick,
accurate, and stable readings.
The pre-assembled cap must be completely
submersed to obtain an accurate reading in
solutions. Provide simple stirring for best
results—ideally achieve a minimum water flow
rate of 2 inch/second on the membrane. The
probe is not recommended beyond 0 to 50 °C.
Shaking will aid to remove 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
damaged. Use care to protect from scratches,
abrasion, or contact with solids. For best results
keep membrane clean by rinsing after daily use.
See Section 6 – PROBE MAINTENANCE.
Galvanic DO probe
(93X233912)
Detachable
Pre-membraned Cap
(Probe Sensing Area)
16 mm
12 mm