Instruction Manual
PD 300
To connect the DO/ temperature probe:
1. Line up the notch and 6 pins on the probe connector with the holes in the connector
located on the top of the meter. Push down and turn the metal locking ring clockwise to
lock the probe connector into place. See Figure 4.
2. To remove probe, unscrew the metal locking ring by turning the ring counterclockwise
and slide up the probe connector. While holding onto metal sleeve, pull probe away from
the meter.
NOTE
Do not substitute other DO probes. For a replacement DO probe, see the “Accessories”
section. Follow the same directions to connect an optional separate temperature element.
CAUTION:
Do not pull on the probe cord or the probe wires may be damaged.
Figure 4: Connecting pH and DO/temperature probes
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