YOKOGAWA DO71, Инструкция по эксплуатации, Страница: 10 / 24

3. INSTALLATION OF DO71
Using the sensor adapters the DO71
optical dissolved oxygen sensor can be
assembled into the complete Yokogawa
flow and immersion fitting program:
Flow fitting FF20, FF40, PB350G/PB30 an -
gled floating ball holder, PB360G vertical
floating ball holder, or DOX8HS submer -
sion type holder. Flow and immersion
fitting program allows sensor to be
immersed or submerged to the optimum
point to obtain precise measurements.
Section 3.7 of this manual describes
adapters for mounting sensor directly in
process or existing fitting program.
3.1 Installation in sensor holder
An adaptor (optional) is necessary to as-
semble DO71 into the DOX8HS submer-
sion type holder (Fig. 2), PB350G angled
floating ball holder (Fig. 3) or PB360G
vertical floating ball holder (Fig. 4).
3.2 Preparing the sensor for use
Make sure that the Oxygen Exchange
Cap (OEC) is screwed tightly to the probe
body and did not work loose while han-
dling the probe.
3.3 Mounting the sensor
Choose a holder / fitting that suits the
liquid to be measured and the measure-
ment location. For detailed sensor instal-
lation procedure to sensor holder, please
refer to section 3.5 and 3.6.
Note: Avoid choosing a location where
the solution is unevenly distributed,
since heavy hunting may result in the
measured value. Also, avoid locations
where bubbles occur frequently.
Note that, if a measured solution run-
ning at a high flow rate contains particles
of sand, the sensor membrane may be
damaged.
Fig. 2: DOX8HS submersion type holder
Fig. 4: PB360G vertical floating ball
holder
Fig. 3: PB350G/PB30 angled floating ball
holder
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